Analysis
- max time kernel
164s - max time network
164s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
20/03/2023, 11:30
General
- Target 7de990046a20e6666627273589b014a5.exe
- Size 292KB
- Sample230320-nl6phsdc36
- SHA256 ebce15ad53b98d7aba7f7544ee947e88f58d696e22ca4bc5d15b2ded37b577ac
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\7de990046a20e6666627273589b014a5.exe"C:\Users\Admin\AppData\Local\Temp\7de990046a20e6666627273589b014a5.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\mcwfy.exe"C:\Users\Admin\AppData\Local\Temp\mcwfy.exe" C:\Users\Admin\AppData\Local\Temp\ytljtt.f3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\mcwfy.exe"C:\Users\Admin\AppData\Local\Temp\mcwfy.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\raserver.exe"C:\Windows\SysWOW64\raserver.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 1664 -s 1404⤵
- Program crash
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 472 -p 1664 -ip 16641⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
mcwfy.exe
mcwfy.exe
mcwfy.exe
ortnkgsjk.g
ytljtt.f
memory/3212-149-0x0000000007860000-0x0000000007916000-memory.dmp
memory/3212-161-0x0000000003000000-0x00000000030B6000-memory.dmp
memory/3212-157-0x0000000003000000-0x00000000030B6000-memory.dmp
memory/3632-150-0x00000000001D0000-0x00000000001EF000-memory.dmp
memory/3632-154-0x00000000001D0000-0x00000000001EF000-memory.dmp
memory/3632-155-0x0000000000880000-0x00000000008AD000-memory.dmp
memory/3632-156-0x00000000028C0000-0x0000000002C0A000-memory.dmp
memory/3632-158-0x0000000002660000-0x00000000026EF000-memory.dmp
memory/4280-147-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4280-148-0x00000000005A0000-0x00000000005B0000-memory.dmp
memory/4280-146-0x0000000000A90000-0x0000000000DDA000-memory.dmp
memory/4280-145-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4280-142-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4884-140-0x0000000000590000-0x0000000000592000-memory.dmp