Analysis
- max time kernel
92s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
28/02/2023, 01:06
General
- Target 167bbd9058620cf4884372e3f322eeb0783c644ece600f0eee356b29a1d0925c.exe
- Size 764KB
- Sample230228-bgh2fage8y
- SHA256 167bbd9058620cf4884372e3f322eeb0783c644ece600f0eee356b29a1d0925c
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 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.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 21 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\167bbd9058620cf4884372e3f322eeb0783c644ece600f0eee356b29a1d0925c.exe"C:\Users\Admin\AppData\Local\Temp\167bbd9058620cf4884372e3f322eeb0783c644ece600f0eee356b29a1d0925c.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 167bbd9058620cf4884372e3f322eeb0783c644ece600f0eee356b29a1d0925c /tr '"C:\Users\Admin\AppData\Roaming\taskmengar.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /ru system /rl highest /tn 167bbd9058620cf4884372e3f322eeb0783c644ece600f0eee356b29a1d0925c /tr '"C:\Users\Admin\AppData\Roaming\taskmengar.exe"'3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA6D4.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\taskmengar.exe"C:\Users\Admin\AppData\Roaming\taskmengar.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpA6D4.tmp.bat
taskmengar.exe
taskmengar.exe
memory/3836-152-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3836-151-0x0000000007720000-0x0000000007786000-memory.dmp
memory/3836-150-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/3836-149-0x0000000004A30000-0x0000000004A40000-memory.dmp
memory/4156-136-0x0000000005B00000-0x0000000005B92000-memory.dmp
memory/4156-140-0x0000000005AF0000-0x0000000005B00000-memory.dmp
memory/4156-139-0x0000000005AF0000-0x0000000005B00000-memory.dmp
memory/4156-138-0x0000000005D10000-0x0000000005D66000-memory.dmp
memory/4156-137-0x00000000059F0000-0x00000000059FA000-memory.dmp
memory/4156-133-0x0000000000F70000-0x0000000001034000-memory.dmp
memory/4156-135-0x00000000060B0000-0x0000000006654000-memory.dmp
memory/4156-134-0x0000000005A10000-0x0000000005AAC000-memory.dmp