Analysis
- max time kernel
150s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20220331-en - submitted
05/04/2022, 06:32
General
- Target Proforma Invoice#2796_xlsx.exe
- Size 241KB
- Sample220405-halx3safd2
- SHA256 add90f420c37b1391d4e3c22020c664c36a0dc0e0b6c43bfcc2a5f092fa18f0c
Malware Config
Extracted
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formbook
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4.1
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r75h
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rethinkmycountrylife.com
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hs5ae.xyz
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boylesports.xyz
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totalenergiesistasyonlari.com
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supportukraine-pic.com
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koi-ch.net
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lakemurrayhomes.net
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betvoxel.com
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fullstarscoin.com
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efablueprint.net
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astrogeop.com
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tiyu372.net
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autoeco.pro
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cleanupnet.com
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mybooktimes.online
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annnabeysurvey.com
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termscaseplaces.biz
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varildolum.com
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javideejay.com
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jszfcgbx.press
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook Payload 3 IoCs
- Executes dropped EXE 2 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 62 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 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 WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Proforma Invoice#2796_xlsx.exe"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice#2796_xlsx.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tcwyjacgu.exeC:\Users\Admin\AppData\Local\Temp\tcwyjacgu.exe C:\Users\Admin\AppData\Local\Temp\rqfuvckx3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\tcwyjacgu.exeC:\Users\Admin\AppData\Local\Temp\tcwyjacgu.exe C:\Users\Admin\AppData\Local\Temp\rqfuvckx4⤵
- Executes dropped EXE
- 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\tcwyjacgu.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
5se7gz2juta8peffqr5
rqfuvckx
tcwyjacgu.exe
tcwyjacgu.exe
tcwyjacgu.exe
memory/2624-143-0x0000000002BB0000-0x0000000002C7D000-memory.dmp
memory/2624-136-0x00000000029C0000-0x0000000002B0C000-memory.dmp
memory/4240-133-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4240-135-0x00000000005C0000-0x00000000005D5000-memory.dmp
memory/4240-130-0x0000000000400000-0x000000000042F000-memory.dmp
memory/4240-134-0x0000000000AC0000-0x0000000000E0A000-memory.dmp
memory/4692-139-0x0000000000190000-0x00000000001BF000-memory.dmp
memory/4692-138-0x00000000004F0000-0x00000000004FE000-memory.dmp
memory/4692-140-0x0000000000E00000-0x000000000114A000-memory.dmp
memory/4692-142-0x0000000000CD0000-0x0000000000D64000-memory.dmp