Openhunting Threat Library

CHAIRSMACK

CHAIRSMACK
(Type: Backdoor)

(Mandiant) CHAIRSMACK is a backdoor written in C++ that communicates using HTTP. CHAIRSMACK's core functionality involves expanding its capabilities by retrieving plugins from a C2 server. Downloaded plugins are cached on disk for future use. Capabilities added via plugins are inferred based on supported backdoor command names. These capabilities include shell command execution, screenshot capture, audio capture, keylogging, file transfer, and file execution.

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[TTP Analysis] Mitre Attack Matrix:

TA0043 TA0042 TA0001 TA0002 TA0003 TA0004 TA0005 TA0006 TA0007 TA0008 TA0009 TA0011 TA0010 TA0040
Reconnaissance Resource Development Initial Access Execution Persistence Privilege Escalation Defense Evasion Credential Access Discovery Lateral Movement Collection Command and Control Exfiltration Impact


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[Target Analysis] Region/Sector:

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References:

News Basic Information Indicator of Compromise Mitre Attack

Basic Information (Credit @etda.or.th)

Tool: CHAIRSMACK

Names: CHAIRSMACK

Description: (Mandiant) CHAIRSMACK is a backdoor written in C++ that communicates using HTTP. CHAIRSMACK's core functionality involves expanding its capabilities by retrieving plugins from a C2 server. Downloaded plugins are cached on disk for future use. Capabilities added via plugins are inferred based on supported backdoor command names. These capabilities include shell command execution, screenshot capture, audio capture, keylogging, file transfer, and file execution.

Category: Malware

Type: Backdoor

Information: https://www.mandiant.com/media/17826

Malpedia: https://malpedia.caad.fkie.fraunhofer.de/details/win.chairsmack

Last-card-change: 2022-12-27

Source: https://apt.etda.or.th/cgi-bin/listtools.cgi

TA0043 TA0042 TA0001 TA0002 TA0003 TA0004 TA0005 TA0006 TA0007 TA0008 TA0009 TA0011 TA0010 TA0040
Reconnaissance Resource Development Initial Access Execution Persistence Privilege Escalation Defense Evasion Credential Access Discovery Lateral Movement Collection Command and Control Exfiltration Impact