Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01-11-2022 06:41

General

  • Target

    wynwormi (1).js

  • Size

    6KB

  • MD5

    7edcf771a2b13ab36e1e785d750d2748

  • SHA1

    f5e52a0b4e4d8ea14d63f55a15996ecc5043e3b3

  • SHA256

    0eda80c7f56ee8ebbefcaebaf92f9bd4374249076cce2db1361b8292c7537ff2

  • SHA512

    7bb655b07088512dd721221924b4055c6891c58b3e66432b6744eff773d10d73d75229bee205820393fb557aa1e92648cfc9f777f8e1eb55067484cec0132625

  • SSDEEP

    192:3sIwVBBUBALLDz4kFFZAAb02nSOBzwk2sTRvBz7v/jvBD8WqkMjLRvBzwV:8IEBBaOFXZKgpQ2V

Malware Config

Extracted

Family

vjw0rm

C2

http://45.139.105.174:6605

Extracted

Family

wshrat

C2

http://45.139.105.174:7670

Signatures

  • 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 11 IoCs
  • Drops startup file 4 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.

  • Script User-Agent 7 IoCs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\wynwormi (1).js"
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\ZX6S7BKN8U.js"
      2⤵
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:688
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\ZX6S7BKN8U.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        • Adds Run key to start application
        PID:1620

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\ZX6S7BKN8U.js

    Filesize

    25KB

    MD5

    3d8c14e2a64c3fca48e9b06ee1ae3350

    SHA1

    e5eb776289ddb44203c564cda9c2c00f1485b079

    SHA256

    ed912ccf4f283846786993b1866a0ab07d70d11c9e88c2174fd2986130dda059

    SHA512

    f2759ffcbfd99bf6921aab0afe7e2506a898e17a3c7f700e392da816556e8e74242a2355830af0e1b0851cfa2443e502db6f9221ee6f3ec28ef4d13d5e900a26

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ZX6S7BKN8U.js

    Filesize

    25KB

    MD5

    3d8c14e2a64c3fca48e9b06ee1ae3350

    SHA1

    e5eb776289ddb44203c564cda9c2c00f1485b079

    SHA256

    ed912ccf4f283846786993b1866a0ab07d70d11c9e88c2174fd2986130dda059

    SHA512

    f2759ffcbfd99bf6921aab0afe7e2506a898e17a3c7f700e392da816556e8e74242a2355830af0e1b0851cfa2443e502db6f9221ee6f3ec28ef4d13d5e900a26

  • C:\Users\Admin\AppData\Roaming\ZX6S7BKN8U.js

    Filesize

    25KB

    MD5

    3d8c14e2a64c3fca48e9b06ee1ae3350

    SHA1

    e5eb776289ddb44203c564cda9c2c00f1485b079

    SHA256

    ed912ccf4f283846786993b1866a0ab07d70d11c9e88c2174fd2986130dda059

    SHA512

    f2759ffcbfd99bf6921aab0afe7e2506a898e17a3c7f700e392da816556e8e74242a2355830af0e1b0851cfa2443e502db6f9221ee6f3ec28ef4d13d5e900a26

  • memory/1980-54-0x000007FEFB831000-0x000007FEFB833000-memory.dmp

    Filesize

    8KB