Analysis
- max time kernel
1173s - max time network
1178s - platform
windows7_x64 - resource
win7-20240903-en - resource tags
- submitted
27/11/2024, 09:27
General
- Target 7b931d48eafa703a99ca7f104daf9a7343b6f1161d49073b86f5a4700864d3f0.exe
- Size 82KB
- Sample241127-le54astrfj
- SHA256 7b931d48eafa703a99ca7f104daf9a7343b6f1161d49073b86f5a4700864d3f0
Malware Config
Extracted
-
crimsonrat
-
172.245.247.112
Signatures
- CrimsonRAT main payload 1 IoCs
- CrimsonRat
Crimson RAT is a malware linked to a Pakistani-linked threat actor.
- Crimsonrat family
- Executes dropped EXE 1 IoCs
- Drops file in Program Files directory 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
- Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
- Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
-
C:\Users\Admin\AppData\Local\Temp\7b931d48eafa703a99ca7f104daf9a7343b6f1161d49073b86f5a4700864d3f0.exe"C:\Users\Admin\AppData\Local\Temp\7b931d48eafa703a99ca7f104daf9a7343b6f1161d49073b86f5a4700864d3f0.exe"1⤵
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
-
C:\ProgramData\Phinvdir\nwrtharmas.exe"C:\ProgramData\Phinvdir\nwrtharmas.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
nwrtharmas.exe
aihdram.zip
memory/1424-33-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/1424-32-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/1424-31-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/1424-34-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/2404-0-0x000007FEF577E000-0x000007FEF577F000-memory.dmp
memory/2404-1-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/2404-2-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/2404-3-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp
memory/2404-30-0x000007FEF54C0000-0x000007FEF5E5D000-memory.dmp