Analysis
- max time kernel
149s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
29/11/2022, 14:11
General
- Target shedfam.exe
- Size 880KB
- Sample221129-rhaz8aff82
- SHA256 c9cf9f0fa6980019aa3a93b9b25ca2cf14cfad4b4afef12d43a20ece34d2093b
Malware Config
Extracted
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formbook
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4.1
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sk19
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21diasdegratitud.com
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kx1993.com
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chasergt.com
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837news.com
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naturagent.co.uk
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gatorinsurtech.com
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iyaboolashilesblog.africa
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jamtanganmurah.online
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gguminsa.com
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lilliesdrop.com
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lenvera.com
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link48.co.uk
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azinos777.fun
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lgcdct.cfd
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bg-gobtc.com
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livecarrer.uk
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cbq4u.com
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imalreadygone.com
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wabeng.africa
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jxmheiyouyuetot.tokyo
Signatures
- Formbook
Formbook is a data stealing malware which is capable of stealing data.
- Formbook payload 4 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.
- Enumerates system info in registry 2 TTPs 1 IoCs
- Suspicious behavior: EnumeratesProcesses 60 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 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 WriteProcessMemory 13 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\shedfam.exe"C:\Users\Admin\AppData\Local\Temp\shedfam.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kmhbvf.exe"C:\Users\Admin\AppData\Local\Temp\kmhbvf.exe" "C:\Users\Admin\AppData\Local\Temp\wenvaisrl.au3"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\kmhbvf.exe"C:\Users\Admin\AppData\Local\Temp\kmhbvf.exe" "C:\Users\Admin\AppData\Local\Temp\wenvaisrl.au3"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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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\kmhbvf.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
hocjhpxqy.mm
kmhbvf.exe
kmhbvf.exe
kmhbvf.exe
piqsiyngg.yfg
wenvaisrl.au3
memory/1316-140-0x0000000001BA0000-0x0000000001EEA000-memory.dmp
memory/1316-141-0x0000000001540000-0x0000000001554000-memory.dmp
memory/1316-144-0x0000000000400000-0x000000000042F000-memory.dmp
memory/1316-139-0x0000000000400000-0x000000000042F000-memory.dmp
memory/3048-142-0x0000000003010000-0x0000000003184000-memory.dmp
memory/3048-153-0x0000000003540000-0x000000000363D000-memory.dmp
memory/3048-151-0x0000000003540000-0x000000000363D000-memory.dmp
memory/4860-146-0x0000000000E70000-0x0000000000E9F000-memory.dmp
memory/4860-149-0x00000000017D0000-0x0000000001B1A000-memory.dmp
memory/4860-150-0x0000000001600000-0x0000000001693000-memory.dmp
memory/4860-145-0x0000000000FD0000-0x0000000000FDA000-memory.dmp
memory/4860-152-0x0000000000E70000-0x0000000000E9F000-memory.dmp