Analysis
- max time kernel
150s - max time network
139s - platform
windows10_x64 - resource
win10v20201028 - submitted
08/04/2021, 08:51
General
- Target PO.exe
- Size 222KB
- Sample210408-cs76s8zdfe
- SHA256 ce27bdaa30fc5a712b41888b529f52c87f90b9d196b975d47ec9b5236b48cebc
Malware Config
Extracted
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formbook
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4.1
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http://www.riceandginger.com/fcn/
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bellee-select.com
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unlock-motorola.com
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courtneyrunyon.com
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hnzywjz.com
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retrievingbest.net
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ayescarrental.com
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beyoutifulblessings.com
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heritagediscovery.net
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fasoum.com
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wbz.xyz
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lownak.com
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alinkarmay.com
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coffeyquiltco.com
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validdreamers.com
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yuksukcu.club
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buildnextfrc.com
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avantfarme.com
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xyfs360.com
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holisticpacific.com
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banejia.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 2 IoCs
- Loads dropped DLL 1 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.
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 60 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO.exe"C:\Users\Admin\AppData\Local\Temp\PO.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO.exe"C:\Users\Admin\AppData\Local\Temp\PO.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\wlanext.exe"C:\Windows\SysWOW64\wlanext.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Users\Admin\AppData\Local\Temp\PO.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1204-116-0x00000000025D0000-0x00000000025D2000-memory.dmp
memory/2416-117-0x0000000000400000-0x000000000042E000-memory.dmp
memory/2416-118-0x00000000009D0000-0x0000000000CF0000-memory.dmp
memory/2416-119-0x0000000000D10000-0x0000000000D24000-memory.dmp
memory/3044-120-0x0000000005EA0000-0x000000000603E000-memory.dmp
memory/3044-127-0x0000000006290000-0x0000000006406000-memory.dmp
memory/3676-124-0x0000000000DB0000-0x0000000000DDE000-memory.dmp
memory/3676-123-0x0000000000F10000-0x0000000000F27000-memory.dmp
memory/3676-125-0x00000000037B0000-0x0000000003AD0000-memory.dmp
memory/3676-126-0x0000000003470000-0x0000000003503000-memory.dmp