General
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Target
https://github.com/NotReal96/Malware/blob/master/MrsMajor.md
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Sample
240229-azgewshc6z
Static task
static1
URLScan task
urlscan1
Behavioral task
behavioral1
Sample
https://github.com/NotReal96/Malware/blob/master/MrsMajor.md
Resource
win11-20240221-en
Behavioral task
behavioral2
Sample
https://github.com/NotReal96/Malware/blob/master/MrsMajor.md
Resource
macos-20240214-en
Malware Config
Targets
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Target
https://github.com/NotReal96/Malware/blob/master/MrsMajor.md
Score10/10-
Modifies WinLogon for persistence
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Disables RegEdit via registry modification
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Disables Task Manager via registry modification
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Modifies Installed Components in the registry
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Executes dropped EXE
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Loads dropped DLL
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Modifies system executable filetype association
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Obfuscated with Agile.Net obfuscator
Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
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Drops desktop.ini file(s)
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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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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Event Triggered Execution
1Change Default File Association
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Hide Artifacts
1Resource Forking
1Impair Defenses
1Disable or Modify Tools
1Modify Registry
5