Analysis
- max time kernel
74s - max time network
78s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
06/02/2022, 08:51
General
- Target boleto de pagamento.exe
- Size 405KB
- Sample220206-kr6d6ahbap
- SHA256 2099d310f5fc3d161fad8db45a1e8d555006869871d52e063c0760284955b75e
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Drops file in Windows directory 6 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 7 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\boleto de pagamento.exe"C:\Users\Admin\AppData\Local\Temp\boleto de pagamento.exe"1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\LGBKaHx.exe"2⤵
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LGBKaHx" /XML "C:\Users\Admin\AppData\Local\Temp\tmp69CE.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1536-130-0x0000000000980000-0x00000000009EC000-memory.dmp
memory/1536-131-0x0000000005920000-0x0000000005EC4000-memory.dmp
memory/1536-132-0x0000000005410000-0x00000000054A2000-memory.dmp
memory/1536-133-0x0000000005370000-0x0000000005914000-memory.dmp
memory/1536-134-0x0000000005390000-0x000000000539A000-memory.dmp
memory/1536-143-0x0000000005F70000-0x000000000600C000-memory.dmp
memory/2140-135-0x000002150DFA0000-0x000002150DFB0000-memory.dmp
memory/2140-142-0x0000021511380000-0x0000021511384000-memory.dmp