Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    10/10/2022, 08:03

General

  • Target

    eReceipt.js

  • Size

    29KB

  • MD5

    0968b3aa878bf1d8b9b785d76651178e

  • SHA1

    1bec2812a133e8af946847045f4ef22cb8c0b444

  • SHA256

    90e88a55046ff7bc2ea11a44bcbda591639c29de30f5274a44f951b0359b2f2e

  • SHA512

    4f27e335ca640bd06d581dbb827d91d3e6e401078d10dfc6e4852ae2e8a622b5c7c549206520b3e43a1ca116e9c9309d8c26e9d1e28310793e71825a56c43394

  • SSDEEP

    768:d+GpRxXOewzfBp94XUK0ITIW4NXY2lfgcPk0JK:n5UBnNo2lfg8XK

Malware Config

Extracted

Family

vjw0rm

C2

http://zeegod.duckdns.org:9004

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 6 IoCs
  • Drops startup file 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\eReceipt.js
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\IjKIytFPkg.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:1616
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\eReceipt.js
      2⤵
      • Creates scheduled task(s)
      PID:988

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\IjKIytFPkg.js

    Filesize

    10KB

    MD5

    ef0483773297fed332856b0c51c77ec5

    SHA1

    0215fef393a219df1a8263cfd89b3de50328327c

    SHA256

    26742501b9958757e1003e4b8b43a3df7e698cbb30c0339e59b62edeea24f231

    SHA512

    1aee96ac181e5246c74d0a11e4a248617388c70de0c62302a853f9a11f2a5f1480a7898d7a6b7f8ca4dfbe0afde80129edafc39dfb64e48686a5be0f824f7998

  • memory/956-54-0x000007FEFBF81000-0x000007FEFBF83000-memory.dmp

    Filesize

    8KB