General
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Target
Patch_MB 4.6.x.exe
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Size
65.2MB
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Sample
231105-tjxaysad83
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MD5
5a164eb5acf9ec12834296ac42ae7c49
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SHA1
5f48369f8089f545585f62c1fa2ffea4cf5ac291
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SHA256
2da76f18a902b16d7cdfcaea29208ba58e682c9e2b84a6912ba1011fe6603162
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SHA512
ad1e8a47c0aa0d909900876c0dcf76760ba098381c2d2caee1bf8cacaab60cfb79a4968aaca1e3894fca8d90224704602f4259a358e330c6136f41125e1c2760
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SSDEEP
1572864:OOUOMLEmI4Z8TDCNU63i/BNJNRaGUwDfSzE3FjBdJ14A8/IuNbDdwNVyL:OOUOCEmzfWBNJN4iSzE3FjBCIuNbu+L
Static task
static1
Malware Config
Targets
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Target
Patch_MB 4.6.x.exe
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Size
65.2MB
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MD5
5a164eb5acf9ec12834296ac42ae7c49
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SHA1
5f48369f8089f545585f62c1fa2ffea4cf5ac291
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SHA256
2da76f18a902b16d7cdfcaea29208ba58e682c9e2b84a6912ba1011fe6603162
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SHA512
ad1e8a47c0aa0d909900876c0dcf76760ba098381c2d2caee1bf8cacaab60cfb79a4968aaca1e3894fca8d90224704602f4259a358e330c6136f41125e1c2760
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SSDEEP
1572864:OOUOMLEmI4Z8TDCNU63i/BNJNRaGUwDfSzE3FjBdJ14A8/IuNbDdwNVyL:OOUOCEmzfWBNJN4iSzE3FjBCIuNbu+L
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Modifies WinLogon for persistence
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Blocklisted process makes network request
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Drops file in Drivers directory
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Modifies Windows Firewall
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Sets service image path in registry
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Checks BIOS information in registry
BIOS information is often read in order to detect sandboxing environments.
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Registers COM server for autorun
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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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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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Checks system information in the registry
System information is often read in order to detect sandboxing environments.
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Drops file in System32 directory
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
4Registry Run Keys / Startup Folder
3Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Defense Evasion
Hide Artifacts
1Hidden Files and Directories
1Modify Registry
4