Analysis
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max time kernel
15s -
max time network
20s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
18/03/2024, 17:45
Static task
static1
General
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Target
strcomputer.vbs
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Size
2KB
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MD5
26b6d2fcf318aecf9df98d0f4705a671
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SHA1
1751305572fc3e87bdcf8f5a46fd45fee3a3830d
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SHA256
da372170c6fa0828db5e4fb5cf15749d09391b6f6b998dc6a27ecc68e26ff30a
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SHA512
46622857c48e01b8222eb0613b77d88155d17b8694e13b6edc3c8d88d6278104496680381d595a37ace5a18f71fe85c7405a866b3092d09618da4832da925784
Malware Config
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" reg.exe -
Disables Task Manager via registry modification
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation WScript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Kills process with taskkill 1 IoCs
pid Process 2212 taskkill.exe -
Modifies registry key 1 TTPs 1 IoCs
pid Process 4960 reg.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3260 NOTEPAD.EXE -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2212 taskkill.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3376 wrote to memory of 4720 3376 WScript.exe 89 PID 3376 wrote to memory of 4720 3376 WScript.exe 89 PID 4720 wrote to memory of 4960 4720 cmd.exe 92 PID 4720 wrote to memory of 4960 4720 cmd.exe 92 PID 3376 wrote to memory of 2212 3376 WScript.exe 93 PID 3376 wrote to memory of 2212 3376 WScript.exe 93
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\strcomputer.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3376 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /k C:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f2⤵
- Suspicious use of WriteProcessMemory
PID:4720 -
C:\Windows\System32\reg.exeC:\Windows\System32\reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /t REG_DWORD /d 0 /f3⤵
- UAC bypass
- Modifies registry key
PID:4960
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C:\Windows\System32\taskkill.exe"C:\Windows\System32\taskkill.exe" /im cmd.exe2⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:2212
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\README.txt1⤵
- Opens file in notepad (likely ransom note)
PID:3260