General
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Target
GSB.exe
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Size
17.8MB
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Sample
240926-syeh1svbrk
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MD5
b6a32e9bed61d137f4da4631fa2bf28b
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SHA1
2bcae476a5075a3c2f3c8784fbb9b7423d47ef20
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SHA256
20951c64e76fe47ba0eb9b14428cc12f41914d671127079446b79bc142d1b782
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SHA512
fb71311eb4b019fd397313d42e834086b783dae6d2d3b8902bd2bb50c1ffd7f30527ac2e31af7619d688670e78864c1fba701dc943db0302c4bcfd6616562777
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SSDEEP
393216:mqPnLFXlreQ+DOETgsvfG6gSsvE0c/5i7veq:LPLFXNeQ/EnPFr54
Behavioral task
behavioral1
Sample
GSB.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
GSB.exe
Resource
win10v2004-20240802-en
Malware Config
Targets
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Target
GSB.exe
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Size
17.8MB
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MD5
b6a32e9bed61d137f4da4631fa2bf28b
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SHA1
2bcae476a5075a3c2f3c8784fbb9b7423d47ef20
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SHA256
20951c64e76fe47ba0eb9b14428cc12f41914d671127079446b79bc142d1b782
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SHA512
fb71311eb4b019fd397313d42e834086b783dae6d2d3b8902bd2bb50c1ffd7f30527ac2e31af7619d688670e78864c1fba701dc943db0302c4bcfd6616562777
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SSDEEP
393216:mqPnLFXlreQ+DOETgsvfG6gSsvE0c/5i7veq:LPLFXNeQ/EnPFr54
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Downloads MZ/PE file
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Event Triggered Execution: Component Object Model Hijacking
Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.
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Executes dropped EXE
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Loads dropped DLL
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Adds Run key to start application
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Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates connected drives
Attempts to read the root path of hard drives other than the default C: drive.
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Component Object Model Hijacking
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Event Triggered Execution
2Component Object Model Hijacking
1Netsh Helper DLL
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1