Analysis
- max time kernel
150s - max time network
138s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
18/10/2021, 12:20
General
- Target rrwq200123.exe
- Size 253KB
- Sample211018-phstxseebp
- SHA256 e5ebc473e259ec57e2a831477b449dd07c13198c0db74ce67732a8fce59e25ac
Malware Config
Extracted
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formbook
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4.1
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rv9n
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http://www.cjspizza.net/rv9n/
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olivia-grace.show
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zhuwww.com
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keiretsu.xyz
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olidnh.space
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searuleansec.com
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2fastrepair.com
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brooklynmetalroof.com
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scodol.com
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novaprint.pro
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the-loaner.com
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nextroundscap.com
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zbwlggs.com
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internetautodealer.com
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xn--tornrealestate-ekb.com
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yunjiuhuo.com
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skandinaviskakryptobanken.com
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coxivarag.rest
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ophthalmologylab.com
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zzzzgjcdbqnn98.net
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doeful.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
- Deletes itself 1 IoCs
- Loads dropped DLL 1 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 31 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\rrwq200123.exe"C:\Users\Admin\AppData\Local\Temp\rrwq200123.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\rrwq200123.exe"C:\Users\Admin\AppData\Local\Temp\rrwq200123.exe"3⤵
- 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
- 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\rrwq200123.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/376-66-0x0000000000850000-0x00000000008E3000-memory.dmp
memory/376-65-0x0000000000990000-0x0000000000C93000-memory.dmp
memory/376-63-0x00000000000C0000-0x00000000000EF000-memory.dmp
memory/376-62-0x0000000000EF0000-0x0000000000EF5000-memory.dmp
memory/1288-60-0x0000000004F90000-0x0000000005054000-memory.dmp
memory/1288-67-0x0000000004BA0000-0x0000000004C3D000-memory.dmp
memory/1608-59-0x00000000002C0000-0x00000000002D4000-memory.dmp
memory/1608-58-0x0000000000970000-0x0000000000C73000-memory.dmp
memory/1608-55-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1696-53-0x00000000767F1000-0x00000000767F3000-memory.dmp