Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
- submitted
15/03/2023, 22:43
General
- Target cf05a6c9248904af6ebb0a728f582c2ca34e11fe7cd9a2e4ebf876ea253256ad.exe
- Size 275KB
- Sample230315-2m8gdsff86
- SHA256 cf05a6c9248904af6ebb0a728f582c2ca34e11fe7cd9a2e4ebf876ea253256ad
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 1 IoCs
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 8 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\cf05a6c9248904af6ebb0a728f582c2ca34e11fe7cd9a2e4ebf876ea253256ad.exe"C:\Users\Admin\AppData\Local\Temp\cf05a6c9248904af6ebb0a728f582c2ca34e11fe7cd9a2e4ebf876ea253256ad.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ylrwvf.exe"C:\Users\Admin\AppData\Local\Temp\ylrwvf.exe" C:\Users\Admin\AppData\Local\Temp\qodqesler.r3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ylrwvf.exe"C:\Users\Admin\AppData\Local\Temp\ylrwvf.exe"4⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\control.exe"C:\Windows\SysWOW64\control.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 4008 -s 1484⤵
- Program crash
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 476 -p 4008 -ip 40081⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
kohcspshh.q
qodqesler.r
ylrwvf.exe
ylrwvf.exe
ylrwvf.exe
memory/3168-160-0x00000000081C0000-0x000000000825A000-memory.dmp
memory/3168-156-0x00000000081C0000-0x000000000825A000-memory.dmp
memory/3168-157-0x00000000081C0000-0x000000000825A000-memory.dmp
memory/3168-149-0x0000000008080000-0x0000000008134000-memory.dmp
memory/4228-153-0x0000000002B90000-0x0000000002EDA000-memory.dmp
memory/4228-155-0x0000000002930000-0x00000000029BF000-memory.dmp
memory/4228-150-0x0000000000D00000-0x0000000000D27000-memory.dmp
memory/4228-151-0x0000000000D00000-0x0000000000D27000-memory.dmp
memory/4228-152-0x00000000009C0000-0x00000000009ED000-memory.dmp
memory/4316-142-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4316-148-0x00000000007F0000-0x0000000000800000-memory.dmp
memory/4316-147-0x0000000001390000-0x00000000016DA000-memory.dmp
memory/4316-146-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4316-145-0x0000000000400000-0x000000000042F000-memory.dmp