Analysis
- max time kernel
150s - max time network
12s - platform
windows7_x64 - resource
win7v20201028 - submitted
18/12/2020, 07:46
General
- Target svchost.exe
- Size 992KB
- Sample201218-1e2pc6b6dx
- SHA256 df8f7e81b9ccea1324a19fd1356c8fb79ea5623ba4095195f86c29f3816b5f7f
Malware Config
Extracted
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formbook
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http://www.thesiromiel.com/kgw/
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valentinakasu.com
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soyelmatador.com
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collaborativeprosperity.com
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power8brokers.com
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nexus-ink.com
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manpasandmeatmarket.com
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the-ethical-forums.today
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maryannpark.com
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bikininbodymommy.com
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pxwuo.com
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bigbangmerch.com
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okaysinger.com
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shopcarpe.com
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rainbowhillsswimclub.com
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crifinmarket.com
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ebl-play.net
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forceandsonsequipment.com
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viagraytqwi.com
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latashashop.com
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suffocatinglymundanepodcast.com
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 3 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Deletes itself 1 IoCs
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates system info in registry 2 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 20 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 4 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of WriteProcessMemory 15 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\svchost.exe"C:\Users\Admin\AppData\Local\Temp\svchost.exe"2⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\svchost.exe"C:\Users\Admin\AppData\Local\Temp\svchost.exe"3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\chkdsk.exe"C:\Windows\SysWOW64\chkdsk.exe"2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- 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\svchost.exe"3⤵
- Deletes itself
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/540-10-0x0000000000400000-0x000000000042E000-memory.dmp
memory/748-2-0x0000000074090000-0x000000007477E000-memory.dmp
memory/748-3-0x0000000000DE0000-0x0000000000DE1000-memory.dmp
memory/748-5-0x0000000000320000-0x0000000000332000-memory.dmp
memory/748-6-0x0000000005090000-0x0000000005108000-memory.dmp
memory/748-7-0x0000000000450000-0x0000000000458000-memory.dmp
memory/748-9-0x0000000000560000-0x00000000005BB000-memory.dmp
memory/844-13-0x00000000003D0000-0x00000000003D7000-memory.dmp
memory/844-15-0x0000000001E50000-0x0000000001EF3000-memory.dmp