Analysis
- max time kernel
150s - max time network
150s - platform
windows7_x64 - resource
win7-20220812-en - resource tags
- submitted
23/10/2022, 04:48
General
- Target Transaccions DOC-REF DX739475.exe
- Size 335KB
- Sample221023-fe4ycagegn
- SHA256 b689885667b1f8a29bafedff5fc69526534732ebb7731d98bbc06f7005b245d5
Malware Config
Extracted
-
formbook
-
gbww
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3/x2lPrf1boaiESNc8cAiW4=
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iA0s1PbjLk6uKw==
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H6nPscabhknUj0OPN5C8
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AlpnEq+CD2Cim8s=
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TpSVKwidiI2Zlco=
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Cr06SJBpQarOh6neid1N0Ygf
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PDTHM+xwYDtfRfwI
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+PGiABBjqPkrm0CPN5C8
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+yvM5DhWy4/EMrmgDoyqiQ==
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yP+Hld6rfz/Mi0GPN5C8
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ph8ao77HLk6uKw==
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aZ1GKLPFOC6zeLJJ9TF+lWY=
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6h0lsVqtMwRvM2/GcMpHn2E=
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HBGt/kYL8aPsJOfk7g==
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s24NMXZPUlaTIQ==
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lYkCUs8DhGPytnSAcd6ZzpFbQhPpeadODQ==
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DPuc/IGpsgxQNf4EuvI7I/+XL++yxA==
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tSEu6roflVrLdCiJKWVIpGY=
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VWAhxYRGWxJ8
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1BIITlL357Ih0V+DTys=
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 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 4 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 8 IoCs
- Suspicious behavior: MapViewOfSection 7 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Transaccions DOC-REF DX739475.exe"C:\Users\Admin\AppData\Local\Temp\Transaccions DOC-REF DX739475.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\Transaccions DOC-REF DX739475.exe"C:\Users\Admin\AppData\Local\Temp\Transaccions DOC-REF DX739475.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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C:\Windows\SysWOW64\systray.exe"C:\Windows\SysWOW64\systray.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
System.dll
memory/1248-77-0x0000000004CE0000-0x0000000004E80000-memory.dmp
memory/1248-91-0x000000000A290000-0x000000000A40C000-memory.dmp
memory/1248-89-0x0000000004CE0000-0x0000000004E80000-memory.dmp
memory/1248-81-0x0000000006410000-0x00000000064E9000-memory.dmp
memory/1344-74-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1344-85-0x00000000001C0000-0x00000000002C0000-memory.dmp
memory/1344-84-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1344-64-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1344-65-0x00000000001C0000-0x00000000002C0000-memory.dmp
memory/1344-83-0x0000000077CF0000-0x0000000077E70000-memory.dmp
memory/1344-67-0x00000000001C0000-0x00000000002C0000-memory.dmp
memory/1344-69-0x0000000077B10000-0x0000000077CB9000-memory.dmp
memory/1344-71-0x0000000000400000-0x0000000001462000-memory.dmp
memory/1344-72-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1344-73-0x0000000000401000-0x0000000001462000-memory.dmp
memory/1344-75-0x000000001D570000-0x000000001D873000-memory.dmp
memory/1344-76-0x000000001D460000-0x000000001D470000-memory.dmp
memory/1344-80-0x0000000000150000-0x0000000000160000-memory.dmp
memory/1344-79-0x0000000000401000-0x0000000001462000-memory.dmp
memory/1384-57-0x0000000002690000-0x00000000032DA000-memory.dmp
memory/1384-61-0x0000000077B10000-0x0000000077CB9000-memory.dmp
memory/1384-54-0x0000000076701000-0x0000000076703000-memory.dmp
memory/1384-78-0x0000000077CF0000-0x0000000077E70000-memory.dmp
memory/1384-66-0x0000000077CF0000-0x0000000077E70000-memory.dmp
memory/1384-63-0x0000000077CF0000-0x0000000077E70000-memory.dmp
memory/1384-62-0x0000000077CF0000-0x0000000077E70000-memory.dmp
memory/1384-56-0x0000000002690000-0x00000000032DA000-memory.dmp
memory/1664-88-0x00000000000C0000-0x00000000000ED000-memory.dmp
memory/1664-87-0x0000000001EE0000-0x00000000021E3000-memory.dmp
memory/1664-90-0x0000000001CF0000-0x0000000001D7F000-memory.dmp
memory/1664-86-0x00000000003F0000-0x00000000003F5000-memory.dmp
memory/1664-92-0x00000000000C0000-0x00000000000ED000-memory.dmp