Analysis
- max time kernel
154s - max time network
158s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
20/10/2022, 13:02
General
- Target RMTT Documentation-REF GZARX019-10-22.exe
- Size 338KB
- Sample221020-p9r2psegh2
- SHA256 bb596a4d943381a7c56efa450df660f6707d317b806d715eac72a62100ea9832
Malware Config
Extracted
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formbook
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pfgc
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hBGNx7LOg1/1V9He6Lr1odiL8A==
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JUtMWPUI+jYE3h2D0VXJrkViyWlklw==
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9Onb+iNxE//TbnVsww==
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+zlULMoiC8l+8Tev2wK6Xpt3qkQ2
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vv/ckxYzTsV3W3KwMKjDf1rK+A==
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fiNtn8AUmEDcSGooP0OzpNX0
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Vo+DIT5uE/PEbnVsww==
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JzMzXJDojoBk5EcxFTKznOD+
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hxRyvNTzW6eTCQ==
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/CcTv23E93dcQXf9RUb+
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n6ODTfEg31QE9F0=
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V9k3j8Pew4FJqasspfOBQNk=
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mq+vfSOVMzCmhwN1wUeUUME41Pw=
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1frRhiXBVRSqDTLo46vXXNc=
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WP9xcxRKdPLGtCeZ8VMcCsA=
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dIBJ53JHoTO5
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tlakzPSKiYl02hJYqJQdC8I=
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EiPtnEnwhz/bMaJp+a0cj8g=
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s7mOSbbN8GbPM3von61MR8E41Pw=
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HFhN1/bX7Umz
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Checks QEMU agent file 2 TTPs 2 IoCs
Checks presence of QEMU agent, possibly to detect virtualization.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Suspicious use of NtCreateThreadExHideFromDebugger 2 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 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.
- Modifies Internet Explorer settings 1 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 18 IoCs
- Suspicious behavior: MapViewOfSection 8 IoCs
- Suspicious use of AdjustPrivilegeToken 6 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RMTT Documentation-REF GZARX019-10-22.exe"C:\Users\Admin\AppData\Local\Temp\RMTT Documentation-REF GZARX019-10-22.exe"2⤵
- Checks QEMU agent file
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\RMTT Documentation-REF GZARX019-10-22.exe"C:\Users\Admin\AppData\Local\Temp\RMTT Documentation-REF GZARX019-10-22.exe"3⤵
- Checks QEMU agent file
- Checks computer location settings
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- 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\msiexec.exe"C:\Windows\SysWOW64\msiexec.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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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
System.dll
memory/2612-160-0x00000000009C0000-0x00000000009ED000-memory.dmp
memory/2612-158-0x00000000028C0000-0x000000000294F000-memory.dmp
memory/2612-157-0x0000000002A70000-0x0000000002DBA000-memory.dmp
memory/2612-156-0x00000000009C0000-0x00000000009ED000-memory.dmp
memory/2612-155-0x00000000001D0000-0x00000000001E2000-memory.dmp
memory/3092-161-0x0000000007DE0000-0x0000000007F31000-memory.dmp
memory/3092-159-0x0000000007DE0000-0x0000000007F31000-memory.dmp
memory/3092-149-0x0000000008250000-0x00000000083B3000-memory.dmp
memory/4944-146-0x000000001D7A0000-0x000000001DAEA000-memory.dmp
memory/4944-139-0x0000000001660000-0x0000000001760000-memory.dmp
memory/4944-144-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4944-145-0x0000000000401000-0x0000000001654000-memory.dmp
memory/4944-142-0x0000000077370000-0x0000000077513000-memory.dmp
memory/4944-141-0x00007FFAD6610000-0x00007FFAD6805000-memory.dmp
memory/4944-147-0x000000001D5D0000-0x000000001D5E0000-memory.dmp
memory/4944-140-0x0000000001660000-0x0000000001760000-memory.dmp
memory/4944-151-0x00007FFAD6610000-0x00007FFAD6805000-memory.dmp
memory/4944-152-0x0000000077370000-0x0000000077513000-memory.dmp
memory/4944-153-0x0000000001660000-0x0000000001760000-memory.dmp
memory/4944-154-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4944-143-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4944-138-0x0000000000400000-0x0000000001654000-memory.dmp
memory/4956-137-0x0000000077370000-0x0000000077513000-memory.dmp
memory/4956-148-0x0000000002970000-0x0000000002A71000-memory.dmp
memory/4956-135-0x00007FFAD6610000-0x00007FFAD6805000-memory.dmp
memory/4956-134-0x0000000002970000-0x0000000002A71000-memory.dmp
memory/4956-133-0x0000000002970000-0x0000000002A71000-memory.dmp