Analysis
- max time kernel
150s - max time network
150s - platform
windows10_x64 - resource
win10v20201028 - submitted
10/02/2021, 14:16
General
- Target Purchase Order _pdf.exe
- Size 875KB
- Sample210210-66vg9bl9ej
- SHA256 2dce266f65b63c927ddf95e71bb0d226eb1c8b260ba8a6965ba1352e9fa837af
Malware Config
Extracted
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formbook
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http://www.brasilseo.com/bft/
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edenicities.com
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buntingfordhomeservices.com
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nuanceproducoes.com
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divasinspire.com
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capiturn.com
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zbjsn.com
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thegioicaytrongnha.com
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featherventure.com
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onbrandtrading.com
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sanguoban.com
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doorman.pro
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ourhomie.net
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iwassickonholiday.com
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mrcskin.com
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reallycoolmask.com
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tkrbeautyinstitut.com
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keytomiami.com
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sesliduybeni.com
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asherwebber.com
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starkweatherwindows.net
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious use of SetThreadContext 3 IoCs
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.
- Suspicious behavior: EnumeratesProcesses 37 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Purchase Order _pdf.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order _pdf.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\VGKutrct" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7754.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\Purchase Order _pdf.exe"C:\Users\Admin\AppData\Local\Temp\Purchase Order _pdf.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\NETSTAT.EXE"C:\Windows\SysWOW64\NETSTAT.EXE"2⤵
- Suspicious use of SetThreadContext
- Gathers network information
- 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\Purchase Order _pdf.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2772-19-0x0000000001860000-0x0000000001874000-memory.dmp
memory/2772-18-0x0000000001880000-0x0000000001BA0000-memory.dmp
memory/2772-15-0x0000000000400000-0x000000000042E000-memory.dmp
memory/3000-27-0x00000000031E0000-0x00000000032B2000-memory.dmp
memory/3000-20-0x0000000006660000-0x00000000067BD000-memory.dmp
memory/3548-22-0x0000000000350000-0x000000000035B000-memory.dmp
memory/3548-26-0x0000000002D90000-0x0000000002E23000-memory.dmp
memory/3548-25-0x0000000003030000-0x0000000003350000-memory.dmp
memory/3548-23-0x0000000002720000-0x000000000274E000-memory.dmp
memory/3584-9-0x0000000005410000-0x0000000005411000-memory.dmp
memory/3584-7-0x0000000005480000-0x0000000005481000-memory.dmp
memory/3584-6-0x00000000058E0000-0x00000000058E1000-memory.dmp
memory/3584-8-0x00000000056B0000-0x00000000056B1000-memory.dmp
memory/3584-2-0x0000000073900000-0x0000000073FEE000-memory.dmp
memory/3584-12-0x0000000001260000-0x00000000012BE000-memory.dmp
memory/3584-5-0x0000000005330000-0x0000000005331000-memory.dmp
memory/3584-10-0x00000000055E0000-0x00000000055E1000-memory.dmp
memory/3584-11-0x0000000005450000-0x0000000005454000-memory.dmp
memory/3584-3-0x0000000000A60000-0x0000000000A61000-memory.dmp