Analysis
- max time kernel
146s - max time network
125s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
04/10/2021, 15:17
General
- Target bnvver12345.exe
- Size 258KB
- Sample211004-sn34magee8
- SHA256 d16da4e6a63f26601dd3c961f31708db79be1aead7cf3834fafa47095b1a45a6
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.
- Formbook Payload 3 IoCs
- Deletes itself 1 IoCs
- Loads dropped DLL 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.
- Suspicious behavior: EnumeratesProcesses 30 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 6 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 6 IoCs
- Suspicious use of SendNotifyMessage 6 IoCs
- Suspicious use of WriteProcessMemory 18 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\bnvver12345.exe"C:\Users\Admin\AppData\Local\Temp\bnvver12345.exe"2⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bnvver12345.exe"C:\Users\Admin\AppData\Local\Temp\bnvver12345.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\autochk.exe"C:\Windows\SysWOW64\autochk.exe"2⤵
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C:\Windows\SysWOW64\cmstp.exe"C:\Windows\SysWOW64\cmstp.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\bnvver12345.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1356-59-0x0000000004900000-0x0000000004A06000-memory.dmp
memory/1356-69-0x00000000064C0000-0x0000000006566000-memory.dmp
memory/1356-61-0x0000000006FA0000-0x000000000710A000-memory.dmp
memory/1504-67-0x00000000022C0000-0x00000000025C3000-memory.dmp
memory/1504-66-0x0000000000090000-0x00000000000BF000-memory.dmp
memory/1504-65-0x0000000000EA0000-0x0000000000EB8000-memory.dmp
memory/1504-68-0x0000000000960000-0x00000000009F3000-memory.dmp
memory/2004-57-0x0000000000770000-0x0000000000A73000-memory.dmp
memory/2004-58-0x00000000006B0000-0x00000000006C4000-memory.dmp
memory/2004-60-0x00000000006F0000-0x0000000000704000-memory.dmp
memory/2004-55-0x0000000000400000-0x000000000042F000-memory.dmp
memory/2032-53-0x00000000759B1000-0x00000000759B3000-memory.dmp