Analysis
- max time kernel
141s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20230915-en - resource tags
- submitted
09/10/2023, 22:49
General
- Target 20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe
- Size 65KB
- Sample231009-2rt5kagh8t
- SHA256 20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7
Malware Config
Signatures
- Jigsaw Ransomware
Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe"C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe"C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\20a637cd6394c41636133b24d78d52a0e091c8012cee9dbf6c4060656f6c7cb7.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
drpbx.exe
drpbx.exe
drpbx.exe
memory/2232-0-0x0000000074CE0000-0x0000000075291000-memory.dmp
memory/2232-1-0x0000000074CE0000-0x0000000075291000-memory.dmp
memory/2232-2-0x0000000001290000-0x00000000012A0000-memory.dmp
memory/2232-16-0x0000000074CE0000-0x0000000075291000-memory.dmp
memory/3796-17-0x0000000074CE0000-0x0000000075291000-memory.dmp
memory/3796-18-0x0000000000A30000-0x0000000000A40000-memory.dmp
memory/3796-19-0x0000000074CE0000-0x0000000075291000-memory.dmp
memory/3796-21-0x0000000074CE0000-0x0000000075291000-memory.dmp