Analysis
- max time kernel
116s - max time network
142s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
01/10/2022, 10:06
General
- Target ce33ab7f846c1916c1f780cfefbe97dc.exe
- Size 423KB
- Sample221001-l43pgafgg2
- SHA256 00ea1024d5bbfbbb5898ffcd8ba53b3a5010c79cf0551010d77976509a60bce2
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- Sets file execution options in registry 2 TTPs 2 IoCs
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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 4 IoCs
- Checks for any installed AV software in registry 1 TTPs 2 IoCs
- Drops desktop.ini file(s) 1 IoCs
- AutoIT Executable 2 IoCs
AutoIT scripts compiled to PE executables.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 4 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Modifies registry class 6 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious behavior: MapViewOfSection 2 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ce33ab7f846c1916c1f780cfefbe97dc.exe"C:\Users\Admin\AppData\Local\Temp\ce33ab7f846c1916c1f780cfefbe97dc.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ce33ab7f846c1916c1f780cfefbe97dc.exe"C:\Users\Admin\AppData\Local\Temp\ce33ab7f846c1916c1f780cfefbe97dc.exe"2⤵
- Executes dropped EXE
- Sets file execution options in registry
- Checks computer location settings
- Checks for any installed AV software in registry
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies registry class
- Suspicious behavior: MapViewOfSection
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /CREATE /SC ONLOGON /TN "Windows Update Check - 0x59FD0765" /TR "C:\ProgramData\WinSecurityControl\guknhhsum.exe" /RL HIGHEST3⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\WerFault.exe"C:\Windows\SysWOW64\WerFault.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
ce33ab7f846c1916c1f780cfefbe97dc.exe
memory/1548-142-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/1548-137-0x00000000000D0000-0x00000000000F6000-memory.dmp
memory/1548-143-0x0000000000A70000-0x0000000000ABB000-memory.dmp
memory/1548-140-0x0000000000A70000-0x0000000000ABB000-memory.dmp
memory/1548-134-0x00000000000D0000-0x00000000000F6000-memory.dmp
memory/1548-141-0x00000000000D0000-0x00000000000F6000-memory.dmp
memory/1548-144-0x0000000002500000-0x000000000250B000-memory.dmp
memory/1732-148-0x0000000000C80000-0x0000000000D38000-memory.dmp
memory/1732-149-0x0000000000C80000-0x0000000000D38000-memory.dmp
memory/1732-147-0x0000000000E40000-0x0000000000EBB000-memory.dmp
memory/4980-139-0x0000000000400000-0x00000000004B5000-memory.dmp
memory/4980-132-0x0000000000400000-0x00000000004B5000-memory.dmp