Analysis
- max time kernel
151s - max time network
151s - platform
windows7_x64 - resource
win7-en-20211014 - submitted
19/10/2021, 08:55
General
- Target YP20210925.exe
- Size 441KB
- Sample211019-kvg6qsfea2
- SHA256 f358d592a02990a899bc4ca7c35804529237cbffac5dcabb3e7e3916a79afbb4
Malware Config
Extracted
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formbook
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4.1
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cb2k
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http://www.freegovphoneservice.com/cb2k/
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prets-personnels-faciles-1.com
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lavandica.com
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855goldenpark.com
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ebrandschool.com
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annielaineinspirations.com
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tuscumbiadivorceattorney.com
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lovarebanwgt74.xyz
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car-plus.info
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fireloops.net
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psychtechsolutions.com
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didubreak.com
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cursodesigndesobrancelhas.com
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berrymyrick.com
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visit-croatia-now.com
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chamonix-cars.club
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1679tnpnd01uzznpvfu8795.com
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noisedelayrecovery.com
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sergiotimoteo.com
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lplc.cloud
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ppezjo.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 4 IoCs
- Deletes itself 1 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.
- 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 21 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 2 IoCs
- Suspicious use of SetWindowsHookEx 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\YP20210925.exe"C:\Users\Admin\AppData\Local\Temp\YP20210925.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UncQQycXJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA7D3.tmp"3⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\YP20210925.exe"C:\Users\Admin\AppData\Local\Temp\YP20210925.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\svchost.exe"C:\Windows\SysWOW64\svchost.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\YP20210925.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/432-79-0x00000000005C0000-0x0000000000653000-memory.dmp
memory/432-77-0x0000000000790000-0x0000000000A93000-memory.dmp
memory/432-76-0x00000000000C0000-0x00000000000EF000-memory.dmp
memory/432-75-0x00000000003E0000-0x00000000003E8000-memory.dmp
memory/1352-69-0x0000000000190000-0x00000000001A4000-memory.dmp
memory/1352-71-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1352-63-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1352-64-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1352-65-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1352-72-0x00000000001D0000-0x00000000001E4000-memory.dmp
memory/1352-68-0x0000000000B60000-0x0000000000E63000-memory.dmp
memory/1392-70-0x0000000007160000-0x000000000729B000-memory.dmp
memory/1392-73-0x00000000072A0000-0x0000000007438000-memory.dmp
memory/1392-80-0x0000000007E10000-0x0000000007F55000-memory.dmp
memory/1752-61-0x0000000004FC0000-0x0000000005010000-memory.dmp
memory/1752-54-0x0000000000950000-0x0000000000951000-memory.dmp
memory/1752-60-0x0000000001FF0000-0x0000000001FF8000-memory.dmp
memory/1752-59-0x0000000004942000-0x0000000004943000-memory.dmp
memory/1752-58-0x0000000004941000-0x0000000004942000-memory.dmp
memory/1752-57-0x0000000004940000-0x0000000004941000-memory.dmp
memory/1752-56-0x0000000076241000-0x0000000076243000-memory.dmp