Analysis
- max time kernel
148s - max time network
144s - platform
windows7_x64 - resource
win7-en-20211014 - submitted
18/10/2021, 02:19
General
- Target Invoice 3284 sales invoice.exe
- Size 416KB
- Sample211018-crvcwsdac4
- SHA256 e827c29f504045d8e6d8a2eb622a571f83e1bf9afaa8f1b839af76f457b45135
Malware Config
Extracted
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formbook
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4.1
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r4gk
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http://www.aprilsaak.quest/r4gk/
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quantalix.com
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animalblog-eggs.com
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039skz.xyz
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guttas.net
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lasantadayparty.com
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protegerfinanceservices.com
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vixtest.xyz
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digitaleconomy.global
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0xpax.xyz
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mobilehome1688.com
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themotionpartners.com
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valueney.com
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hattuafhv.quest
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js0061gj.net
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360metaverse.biz
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seculardata.com
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346727688.xyz
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smartmapom.com
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moksel.com
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exoduswatchco.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 3 IoCs
- Deletes itself 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.
- 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 25 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of WriteProcessMemory 19 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Invoice 3284 sales invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice 3284 sales invoice.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kHyhrJVfXUoPwc" /XML "C:\Users\Admin\AppData\Local\Temp\tmp94FF.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Invoice 3284 sales invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice 3284 sales invoice.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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-
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C:\Windows\SysWOW64\systray.exe"C:\Windows\SysWOW64\systray.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\Invoice 3284 sales invoice.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/340-74-0x00000000002A0000-0x0000000000333000-memory.dmp
memory/340-73-0x0000000001F10000-0x0000000002213000-memory.dmp
memory/340-72-0x00000000000C0000-0x00000000000EF000-memory.dmp
memory/340-71-0x0000000000530000-0x0000000000535000-memory.dmp
memory/696-66-0x0000000000920000-0x0000000000C23000-memory.dmp
memory/696-61-0x0000000000400000-0x000000000042F000-memory.dmp
memory/696-62-0x0000000000400000-0x000000000042F000-memory.dmp
memory/696-63-0x0000000000400000-0x000000000042F000-memory.dmp
memory/696-67-0x0000000000140000-0x0000000000154000-memory.dmp
memory/1396-68-0x0000000006AF0000-0x0000000006C76000-memory.dmp
memory/1396-75-0x0000000003D40000-0x0000000003E21000-memory.dmp
memory/1516-54-0x0000000000FC0000-0x0000000000FC1000-memory.dmp
memory/1516-59-0x0000000004D60000-0x0000000004DB1000-memory.dmp
memory/1516-58-0x0000000000440000-0x0000000000448000-memory.dmp
memory/1516-57-0x0000000000A70000-0x0000000000A71000-memory.dmp
memory/1516-56-0x0000000074A31000-0x0000000074A33000-memory.dmp