Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20220414-en - submitted
26/04/2022, 18:12
General
- Target documents.exe
- Size 433KB
- Sample220426-ws6bbsheap
- SHA256 c9ae0452a8991f36ffa96fc5feb054fd33c04cc77c58113eb8bd69adc50fb539
Malware Config
Extracted
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xloader
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2.5
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3e9r
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143411.com
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300dh.xyz
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win-chance.info
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essentialsofbeauty.com
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skategrindingwheels.com
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jyqtgg.com
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exodijuis.com
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goodwinpuppies.com
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doitlive.online
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hello-orchid.com
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shangjibbs.com
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innovarecic.com
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fococomunicacaovisuales.com
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completemarine.care
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parodistluxuryroll.com
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anda568.com
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unicorm.digital
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weaveapp.xyz
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artractions.com
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app-ads-network.com
Signatures
- Xloader
Xloader is a rebranded version of Formbook malware.
- suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
- Xloader Payload 3 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Enumerates system info in registry 2 TTPs 1 IoCs
- Modifies registry class 3 IoCs
- Suspicious behavior: EnumeratesProcesses 51 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 13 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of WriteProcessMemory 15 IoCs
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\documents.exe"C:\Users\Admin\AppData\Local\Temp\documents.exe"2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SWxEnlaBsT" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD4F8.tmp"3⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"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:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"3⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k appmodel -p -s camsvc1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
tmpD4F8.tmp
memory/1584-150-0x00000000014A0000-0x0000000001530000-memory.dmp
memory/1584-148-0x0000000000ED0000-0x0000000000EF9000-memory.dmp
memory/1584-149-0x0000000001650000-0x000000000199A000-memory.dmp
memory/1584-147-0x0000000000740000-0x000000000074A000-memory.dmp
memory/2768-135-0x0000000005520000-0x0000000005576000-memory.dmp
memory/2768-130-0x0000000000900000-0x0000000000972000-memory.dmp
memory/2768-134-0x0000000005290000-0x000000000529A000-memory.dmp
memory/2768-133-0x0000000005330000-0x00000000053C2000-memory.dmp
memory/2768-132-0x0000000005840000-0x0000000005DE4000-memory.dmp
memory/2768-131-0x00000000051F0000-0x000000000528C000-memory.dmp
memory/3168-144-0x0000000003110000-0x0000000003235000-memory.dmp
memory/3168-151-0x0000000003240000-0x000000000330C000-memory.dmp
memory/3956-139-0x0000000000400000-0x0000000000429000-memory.dmp
memory/3956-141-0x0000000000400000-0x0000000000429000-memory.dmp
memory/3956-142-0x00000000012B0000-0x00000000015FA000-memory.dmp
memory/3956-143-0x0000000001170000-0x0000000001181000-memory.dmp