General
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Target
Sigma Serial Changer (Temp).exe
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Size
7.0MB
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Sample
240603-b13vysef7y
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MD5
5e686c1b99bda6e9f751b15f1ada8738
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SHA1
ea96386a588d9fe3665f200da7d8f5c5763bb9d4
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SHA256
8cfa5d067e6ea8774f8ca3ddbfe86c17e3f06a76753910cefb04409af6099368
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SHA512
638e8920bb702743be8f0d66d386bfaad187cb8fe431c2c31b0c9bd542bc5d9eedeafd42ec117e14bb62376a506e0cbf8c1170767af7323144d5ac1eb76328bd
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SSDEEP
196608:Nr5wiFAzvHgJEeN/FJMIDJf0gsAGK4R8un/TA:o7vg5/Fqyf0gst8u/8
Behavioral task
behavioral1
Sample
Sigma Serial Changer (Temp).exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
Sigma Serial Changer (Temp).exe
Resource
win10v2004-20240226-en
Malware Config
Targets
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Target
Sigma Serial Changer (Temp).exe
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Size
7.0MB
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MD5
5e686c1b99bda6e9f751b15f1ada8738
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SHA1
ea96386a588d9fe3665f200da7d8f5c5763bb9d4
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SHA256
8cfa5d067e6ea8774f8ca3ddbfe86c17e3f06a76753910cefb04409af6099368
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SHA512
638e8920bb702743be8f0d66d386bfaad187cb8fe431c2c31b0c9bd542bc5d9eedeafd42ec117e14bb62376a506e0cbf8c1170767af7323144d5ac1eb76328bd
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SSDEEP
196608:Nr5wiFAzvHgJEeN/FJMIDJf0gsAGK4R8un/TA:o7vg5/Fqyf0gst8u/8
Score8/10-
Command and Scripting Interpreter: PowerShell
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
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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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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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Writes to the Master Boot Record (MBR)
Bootkits write to the MBR to gain persistence at a level below the operating system.
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MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Pre-OS Boot
1Bootkit
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1