Analysis

  • max time kernel
    274s
  • max time network
    303s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/11/2022, 12:31

General

  • Target
    9b0b93c3f2b8fee5d774436447b4990f.js
  • Size 37KB
  • Sample221129-pp777ace2v
  • SHA256 75c5452fe55b5b42e88f7e22cf3d54665f639f721b55dbafa78b43c644f1b598
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • agenttesla

C2
  • https://api.telegram.org/bot5196374398:AAFia6uLKkD-Wc5-qWTKCU_kRGlxKrfZgpE/

Extracted

Family
  • wshrat

C2
  • http://45.139.105.174:7670

Extracted

Family
  • vjw0rm

C2
  • http://45.139.105.174:7575

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • WSHRAT

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

  • Blocklisted process makes network request 32 IoCs
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Drops startup file 9 IoCs
  • Adds Run key to start application 2 TTPs 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Script User-Agent 17 IoCs

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

  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\9b0b93c3f2b8fee5d774436447b4990f.js
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4172
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\uLXRQKOPod.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:3540
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\9b0b93c3f2b8fee5d774436447b4990f.js"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:4564
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\uLXRQKOPod.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:4732
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\LZURDX~1.JS"
        3⤵
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:3012
        • C:\Windows\System32\wscript.exe
          "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\ABjiMOejwE.js"
          4⤵
          • Blocklisted process makes network request
          • Drops startup file
          PID:3452
        • C:\Users\Admin\AppData\Local\Temp\originn.exe
          "C:\Users\Admin\AppData\Local\Temp\originn.exe"
          4⤵
          • Executes dropped EXE
          PID:3164
      • C:\Windows\System32\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\wamafa.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Adds Run key to start application
        PID:4540

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        originn.exe

        • Path C:\Users\Admin\AppData\Local\Temp\originn.exe
        • Size 218KB
        • SHA256 46daff98e524432863b025426a9271f5e9a7f2df0e0b7e9246bb407e3521f5a2
        • MD5 SHA1 SHA512 SSDEEP

        originn.exe

        • Path C:\Users\Admin\AppData\Local\Temp\originn.exe
        • Size 218KB
        • SHA256 46daff98e524432863b025426a9271f5e9a7f2df0e0b7e9246bb407e3521f5a2
        • MD5 SHA1 SHA512 SSDEEP

        9b0b93c3f2b8fee5d774436447b4990f.js

        • Path C:\Users\Admin\AppData\Roaming\9b0b93c3f2b8fee5d774436447b4990f.js
        • Size 37KB
        • SHA256 75c5452fe55b5b42e88f7e22cf3d54665f639f721b55dbafa78b43c644f1b598
        • MD5 SHA1 SHA512 SSDEEP

        ABjiMOejwE.js

        • Path C:\Users\Admin\AppData\Roaming\ABjiMOejwE.js
        • Size 5KB
        • SHA256 df961e75c9905fffc226bcabf4fbca090660680710610f4696d102d352078992
        • MD5 SHA1 SHA512 SSDEEP

        LZURDX~1.JS

        • Path C:\Users\Admin\AppData\Roaming\LZURDX~1.JS
        • Size 399KB
        • SHA256 8ea7e9a5eb1baf49cc22c45b82bdec95186ad7c37d58eb71d5bccaba737e00ca
        • MD5 SHA1 SHA512 SSDEEP

        9b0b93c3f2b8fee5d774436447b4990f.js

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9b0b93c3f2b8fee5d774436447b4990f.js
        • Size 37KB
        • SHA256 75c5452fe55b5b42e88f7e22cf3d54665f639f721b55dbafa78b43c644f1b598
        • MD5 SHA1 SHA512 SSDEEP

        uLXRQKOPod.js

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uLXRQKOPod.js
        • Size 5KB
        • SHA256 51143eeaa698bb5361d1b6759df8fd884f874d2058ee8da0b71e37231fe99b84
        • MD5 SHA1 SHA512 SSDEEP

        uLXRQKOPod.js

        • Path C:\Users\Admin\AppData\Roaming\uLXRQKOPod.js
        • Size 5KB
        • SHA256 51143eeaa698bb5361d1b6759df8fd884f874d2058ee8da0b71e37231fe99b84
        • MD5 SHA1 SHA512 SSDEEP

        uLXRQKOPod.js

        • Path C:\Users\Admin\AppData\Roaming\uLXRQKOPod.js
        • Size 5KB
        • SHA256 51143eeaa698bb5361d1b6759df8fd884f874d2058ee8da0b71e37231fe99b84
        • MD5 SHA1 SHA512 SSDEEP

        wamafa.js

        • Path C:\Users\Admin\AppData\Roaming\wamafa.js
        • Size 5KB
        • SHA256 1f2ccddc4d9634a8faf78f3c0df6e926cd8f145e21738f35f07b67abfc4c8eb8
        • MD5 SHA1 SHA512 SSDEEP

        memory/3164-149-0x0000000000B80000-0x0000000000BBC000-memory.dmp

        memory/3164-150-0x0000000005A60000-0x0000000006004000-memory.dmp