Analysis
- max time kernel
310s - max time network
342s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
- submitted
31/03/2023, 15:55
General
- Target 工作报表.exe
- Size 802KB
- Sample230331-tctaqabc65
- SHA256 a1ee855e975db8957456fc60c33eb040b7bdc2ff79dbd9799f379a4dcade71bf
Malware Config
Signatures
- Downloads MZ/PE file
- ASPack v2.12-2.42 3 IoCs
Detects executables packed with ASPack v2.12-2.42
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\工作报表.exe"C:\Users\Admin\AppData\Local\Temp\工作报表.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\RarSFX0\Project.exe"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Project.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
Project.exe
Project.exe
Project.exe
VMProtectSDK32.dll
vmprotectsdk32.dll
memory/3200-151-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3200-147-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3200-152-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3200-153-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3200-150-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3200-154-0x0000000000400000-0x0000000000719000-memory.dmp
memory/3200-155-0x0000000000B20000-0x0000000000B21000-memory.dmp
memory/3200-156-0x0000000000400000-0x0000000000719000-memory.dmp