# Incident I00126: Charming Kitten Updates POWERSTAR with an InterPlanetary Twist
* **Summary:** Volexity often uncovers spear-phishing campaigns from Charming Kitten against its own customers. These observed spear-phishing attacks are typically aimed at credential harvesting rather than deploying malware. However, in a recently detected spear-phishing campaign, Volexity discovered that Charming Kitten was attempting to distribute an updated version of one of their backdoors, which Volexity calls POWERSTAR (also known as CharmPower).
This new version of POWERSTAR was analyzed by the Volexity team and led the to the discovery that Charming Kitten has been evolving their malware alongside their spear-phishing techniques. Notably, there have been improved operational security measures placed in the malware to make it more difficult to analyze and collect intelligence. Fortunately, Volexity had all the necessary pieces and was able to fully analyze this new POWERSTAR variant.
Volexity found the latest POWERSTAR variant to be more complex and assesses that it is likely supported by a custom server-side component, which automates simple actions for the malware operator. It is also notable that this latest version of the malware has a variety of interesting features, including the use of the InterPlanetary File System (IPFS), as well as remotely hosting its decryption function and configuration details on publicly accessible cloud hosting.
This blog post discusses Charming Kitten’s spear-phishing activity, but it largely focuses on detection and analysis of the new variant of the POWERSTAR backdoor.
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| Reference | Pub Date | Authors | Org | Archive |
| --------- | -------- | ------- | --- | ------- |
| [https://www.volexity.com/blog/2023/06/28/charming-kitten-updates-powerstar-with-an-interplanetary-twist/](https://www.volexity.com/blog/2023/06/28/charming-kitten-updates-powerstar-with-an-interplanetary-twist/) | 2023/06/28 | Ankur Saini, Charlie Gardner | Volexity | [https://web.archive.org/web/20241009175500/https://www.volexity.com/blog/2023/06/28/charming-kitten-updates-powerstar-with-an-interplanetary-twist/](https://web.archive.org/web/20241009175500/https://www.volexity.com/blog/2023/06/28/charming-kitten-updates-powerstar-with-an-interplanetary-twist/) |
| Technique | Description given for this incident |
| --------- | ------------------------- |
| [T0085.004 Develop Document](../../generated_pages/techniques/T0085.004.md) | IT00000530 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
| [T0097.102 Journalist Persona](../../generated_pages/techniques/T0097.102.md) | IT00000525 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
| [T0097.202 News Outlet Persona](../../generated_pages/techniques/T0097.202.md) | IT00000526 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
| [T0143.003 Impersonated Persona](../../generated_pages/techniques/T0143.003.md) | IT00000527 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
| [T0147.003 Malware Asset](../../generated_pages/techniques/T0147.003.md) | IT00000531 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
| [T0149.002 Email Domain Asset](../../generated_pages/techniques/T0149.002.md) | IT00000529 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
| [T0149.003 Lookalike Domain](../../generated_pages/techniques/T0149.003.md) | IT00000528 The target of the recently observed [highly targeted spearphishing attack by “Charming Kitten”, a hacker group attributed to Iran] had published an article related to Iran. The publicity appears to have garnered the attention of Charming Kitten, who subsequently created an email address to impersonate a reporter of an Israeli media organization in order to send the target an email. Prior to sending malware to the target, the attacker simply asked if the target would be open to reviewing a document they had written related to US foreign policy. The target agreed to do so, since this was not an unusual request; they are frequently asked by journalists to review opinion pieces relating to their field of work.
In an effort to further gain the target’s confidence, Charming Kitten continued the interaction with another benign email containing a list of questions, to which the target then responded with answers. After multiple days of benign and seemingly legitimate interaction, Charming Kitten finally sent a “draft report”; this was the first time anything opaquely malicious occurred. The “draft report” was, in fact, a password-protected RAR file containing a malicious LNK file. The password for the RAR file was provided in a subsequent email.
In this example, threat actors created an email address on a domain which impersonated an existing Israeli news organisation impersonating a reporter who worked there (T0097.102: Journalist Persona, T0097.202: News Outlet Persona, T0143.003: Impersonated Persona, T0149.003: Lookalike Domain, T0149.002: Email Domain Asset) in order to convince the target to download a document containing malware (T0085.004: Develop Document, T0147.003: Malware Asset). |
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