Analysis
- max time kernel
152s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
05/05/2022, 10:33
General
- Target PO 240046647.exe
- Size 391KB
- Sample220505-mlhf9aaeer
- SHA256 ff4e7b32b4c4ac0f5fbdd12b9c2ffd894fe647d1d22fe009035cc307a540322d
Malware Config
Extracted
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formbook
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4.1
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amdf
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xadazheng.com
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bremorgan.com
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keilaniclothing.com
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du9a20ofolvhfr.xyz
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santamariacourt.com
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wcagls.com
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visionuptechnology.com
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sddysrq.com
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pencetslot.site
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wpcoisas.com
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caomei08.xyz
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infinitepotential.xyz
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anotherchanceranch.net
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ymterp.com
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zhuyunming.com
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elementarymodel.com
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edmondsonfinancial.com
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adsnethosting.com
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obohsan-souzokusindan.tech
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helicopterart.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- Formbook Payload 3 IoCs
- 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.
- Suspicious behavior: EnumeratesProcesses 60 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\PO 240046647.exe"C:\Users\Admin\AppData\Local\Temp\PO 240046647.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ttumeawr.exeC:\Users\Admin\AppData\Local\Temp\ttumeawr.exe C:\Users\Admin\AppData\Local\Temp\kstjfelnn3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ttumeawr.exeC:\Users\Admin\AppData\Local\Temp\ttumeawr.exe C:\Users\Admin\AppData\Local\Temp\kstjfelnn4⤵
- 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
- 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\ttumeawr.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
kstjfelnn
qlyk252wt2
ttumeawr.exe
ttumeawr.exe
ttumeawr.exe
memory/448-144-0x00000000002E0000-0x00000000002FF000-memory.dmp
memory/448-148-0x0000000002CC0000-0x0000000002D54000-memory.dmp
memory/448-146-0x0000000002F90000-0x00000000032DA000-memory.dmp
memory/448-145-0x0000000000D20000-0x0000000000D4F000-memory.dmp
memory/1052-149-0x0000000008300000-0x0000000008452000-memory.dmp
memory/1052-142-0x00000000086B0000-0x00000000087B1000-memory.dmp
memory/3576-136-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3576-141-0x00000000009F0000-0x0000000000A05000-memory.dmp
memory/3576-140-0x0000000000AD0000-0x0000000000E1A000-memory.dmp
memory/3576-139-0x0000000000400000-0x000000000042F000-memory.dmp