Analysis
- max time kernel
135s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
16/05/2023, 18:11
General
- Target compress.dll.exe
- Size 590KB
- Sample230516-wsk1dsbb2v
- SHA256 71172d06ca49c591c79aa2c3b2dfeb705914a958b6d83b0d655c48e7e8e1cb2a
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Uses the VBS compiler for execution 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 18 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 21 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\compress.dll.exe"C:\Users\Admin\AppData\Local\Temp\compress.dll.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\CpvwXfUdhV.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CpvwXfUdhV" /XML "C:\Users\Admin\AppData\Local\Temp\tmp41EB.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
__PSScriptPolicyTest_ck4h32xl.3fv.ps1
tmp41EB.tmp
memory/3112-144-0x0000000002EC0000-0x0000000002EF6000-memory.dmp
memory/3112-181-0x0000000007D40000-0x0000000007D4E000-memory.dmp
memory/3112-183-0x0000000007E30000-0x0000000007E38000-memory.dmp
memory/3112-182-0x0000000007E50000-0x0000000007E6A000-memory.dmp
memory/3112-150-0x0000000005990000-0x00000000059F6000-memory.dmp
memory/3112-180-0x0000000007D90000-0x0000000007E26000-memory.dmp
memory/3112-179-0x0000000007B80000-0x0000000007B8A000-memory.dmp
memory/3112-146-0x0000000005AE0000-0x0000000006108000-memory.dmp
memory/3112-148-0x0000000005870000-0x0000000005892000-memory.dmp
memory/3112-149-0x0000000002F20000-0x0000000002F30000-memory.dmp
memory/3112-157-0x0000000006210000-0x0000000006276000-memory.dmp
memory/3112-162-0x0000000006810000-0x000000000682E000-memory.dmp
memory/3112-178-0x000000007F820000-0x000000007F830000-memory.dmp
memory/3112-177-0x0000000007B10000-0x0000000007B2A000-memory.dmp
memory/3112-156-0x0000000002F20000-0x0000000002F30000-memory.dmp
memory/3112-163-0x0000000002F20000-0x0000000002F30000-memory.dmp
memory/3112-164-0x0000000006DD0000-0x0000000006E02000-memory.dmp
memory/3112-165-0x0000000070A40000-0x0000000070A8C000-memory.dmp
memory/3112-175-0x0000000006DB0000-0x0000000006DCE000-memory.dmp
memory/3112-176-0x0000000008160000-0x00000000087DA000-memory.dmp
memory/3956-134-0x0000000005810000-0x0000000005DB4000-memory.dmp
memory/3956-136-0x0000000005350000-0x0000000005360000-memory.dmp
memory/3956-135-0x0000000005180000-0x0000000005212000-memory.dmp
memory/3956-133-0x0000000000760000-0x00000000007FA000-memory.dmp
memory/3956-139-0x0000000006B70000-0x0000000006C0C000-memory.dmp
memory/3956-138-0x0000000005350000-0x0000000005360000-memory.dmp
memory/3956-137-0x0000000005240000-0x000000000524A000-memory.dmp