Analysis
- max time kernel
147s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
21/11/2022, 15:32
General
- Target file.exe
- Size 1.5MB
- Sample221121-symjmaff45
- SHA256 ee4cbbb8c6646ee093819a0e7d7f95f52e9f4951bdaa6d4fbe59f80ed4fdd3af
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 14 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- 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.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9C93.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\ProgramData\winrar\OWT.exe"C:\ProgramData\winrar\OWT.exe"3⤵
- Executes dropped EXE
- Checks computer location settings
- 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'4⤵
- 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 "OWT" /tr "C:\ProgramData\winrar\OWT.exe"4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc MINUTE /mo 5 /RL HIGHEST /tn "OWT" /tr "C:\ProgramData\winrar\OWT.exe"5⤵
- Creates scheduled task(s)
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
OWT.exe
OWT.exe
powershell.exe.log
StartupProfileData-NonInteractive
tmp9C93.tmp.bat
memory/1192-156-0x00007FFA06970000-0x00007FFA07431000-memory.dmp
memory/1192-155-0x00007FFA06970000-0x00007FFA07431000-memory.dmp
memory/1192-152-0x000001D5FC060000-0x000001D5FC082000-memory.dmp
memory/3324-172-0x00007FFA06A20000-0x00007FFA074E1000-memory.dmp
memory/3324-165-0x00007FFA22660000-0x00007FFA22801000-memory.dmp
memory/3324-186-0x00007FFA06A20000-0x00007FFA074E1000-memory.dmp
memory/3324-185-0x00000000001B0000-0x00000000001F1000-memory.dmp
memory/3324-184-0x00000000002A0000-0x00000000004A8000-memory.dmp
memory/3324-183-0x00007FFA20980000-0x00007FFA209BB000-memory.dmp
memory/3324-182-0x00007FFA22A10000-0x00007FFA22A7B000-memory.dmp
memory/3324-181-0x00007FFA050A0000-0x00007FFA051A2000-memory.dmp
memory/3324-180-0x00007FFA0D350000-0x00007FFA0D385000-memory.dmp
memory/3324-179-0x00007FFA219A0000-0x00007FFA219C7000-memory.dmp
memory/3324-171-0x00000000001B0000-0x00000000001F1000-memory.dmp
memory/3324-169-0x00000000002A0000-0x00000000004A8000-memory.dmp
memory/3324-170-0x00007FFA05210000-0x00007FFA0535E000-memory.dmp
memory/3324-168-0x00000000002A0000-0x00000000004A8000-memory.dmp
memory/3324-166-0x00007FFA06A20000-0x00007FFA074E1000-memory.dmp
memory/3324-167-0x00007FFA22A80000-0x00007FFA22AAB000-memory.dmp
memory/3324-161-0x00007FFA15CB0000-0x00007FFA15D5A000-memory.dmp
memory/3324-162-0x00007FFA23410000-0x00007FFA234AE000-memory.dmp
memory/3324-163-0x00007FFA1F4D0000-0x00007FFA1F4E2000-memory.dmp
memory/3324-164-0x00007FFA06960000-0x00007FFA06A1D000-memory.dmp
memory/3860-178-0x00007FFA06A20000-0x00007FFA074E1000-memory.dmp
memory/4364-150-0x00007FFA06970000-0x00007FFA07431000-memory.dmp
memory/4364-136-0x00007FFA068B0000-0x00007FFA0696D000-memory.dmp
memory/4364-144-0x00007FFA05160000-0x00007FFA052AE000-memory.dmp
memory/4364-139-0x0000000000EE0000-0x00000000010E8000-memory.dmp
memory/4364-133-0x00007FFA07440000-0x00007FFA074EA000-memory.dmp
memory/4364-138-0x00007FFA06970000-0x00007FFA07431000-memory.dmp
memory/4364-135-0x00007FFA1F4D0000-0x00007FFA1F4E2000-memory.dmp
memory/4364-134-0x00007FFA23410000-0x00007FFA234AE000-memory.dmp
memory/4364-145-0x00007FFA06970000-0x00007FFA07431000-memory.dmp
memory/4364-146-0x000000001D3D0000-0x000000001D8F8000-memory.dmp
memory/4364-137-0x00007FFA22660000-0x00007FFA22801000-memory.dmp
memory/4364-141-0x00007FFA22A80000-0x00007FFA22AAB000-memory.dmp
memory/4364-151-0x0000000000E90000-0x0000000000ED1000-memory.dmp
memory/4364-140-0x0000000000E90000-0x0000000000ED1000-memory.dmp
memory/4364-149-0x0000000000EE0000-0x00000000010E8000-memory.dmp
memory/4364-142-0x0000000000EE0000-0x00000000010E8000-memory.dmp
memory/4364-143-0x0000000000EE0000-0x00000000010E8000-memory.dmp