Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
24/02/2022, 08:20
General
- Target vbc.exe
- Size 313KB
- Sample220224-j8e3vsdfel
- SHA256 79e8144ee4e2e97695849928e162288fc282de48ff4caea48314f9cb56477917
Malware Config
Extracted
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xloader
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2.5
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ciaz
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jobgeist.com
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pxwss.com
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nathanaeljeffrey.xyz
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rhoypl.biz
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avachaturbate.com
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xvideopornfilm.com
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heser.net
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olphschoolcrabfeed.com
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ballygallycastle.com
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attunetouchandglow.com
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wwwswanciitaphotography.com
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inspinevision.com
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ebabadofood.com
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glenngreerforlyman.com
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stickojfni.online
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cursophpbr.xyz
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thefindommistress.com
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8c9myn92dzep.biz
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alexamedia.art
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rarerp.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
- Executes dropped EXE 2 IoCs
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies registry class 2 IoCs
- Suspicious behavior: EnumeratesProcesses 60 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 5 IoCs
- Suspicious use of AdjustPrivilegeToken 10 IoCs
- Suspicious use of UnmapMainImage 1 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 UnmapMainImage
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\yjpsyjwo.exeC:\Users\Admin\AppData\Local\Temp\yjpsyjwo.exe C:\Users\Admin\AppData\Local\Temp\vhdpeghnoh3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\yjpsyjwo.exeC:\Users\Admin\AppData\Local\Temp\yjpsyjwo.exe C:\Users\Admin\AppData\Local\Temp\vhdpeghnoh4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\raserver.exe"C:\Windows\SysWOW64\raserver.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\yjpsyjwo.exe"3⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2456-138-0x0000000000400000-0x0000000000429000-memory.dmp
memory/2456-137-0x0000000000AC0000-0x0000000000E0A000-memory.dmp
memory/2456-139-0x000000000041D000-0x000000000041E000-memory.dmp
memory/2456-134-0x0000000000400000-0x0000000000429000-memory.dmp
memory/2456-140-0x00000000005E0000-0x00000000005F1000-memory.dmp
memory/2712-141-0x0000000007C30000-0x0000000007DD2000-memory.dmp
memory/2712-146-0x0000000008D30000-0x0000000008E6D000-memory.dmp
memory/4372-142-0x0000000000300000-0x000000000031F000-memory.dmp
memory/4372-143-0x0000000001020000-0x0000000001049000-memory.dmp
memory/4372-144-0x0000000002F40000-0x000000000328A000-memory.dmp
memory/4372-145-0x0000000002DA0000-0x0000000002E30000-memory.dmp