Analysis

  • max time kernel
    142s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01-11-2022 19:31

General

  • Target

    proof of payment.js

  • Size

    51KB

  • MD5

    0d0b5b04e14fcc092409742a84532f26

  • SHA1

    7d978a6f7f07629eb04a126d7a94a19662d0951f

  • SHA256

    63ada20c4214f2995f841de3cffabfc465d5bff1b4bee0cf4ebac7be643fb67e

  • SHA512

    b8cdb6164ccd45ad4ca94a3a5491e8d9a0b6a3e3aed56439994a59293141ae9ff3e80cecb4507373bb0ead9e796a83a381e2873f269bc3a100be365ef3c20c4f

  • SSDEEP

    768:5Kk5HT1xsHylPCTBp0Jv8BD3DQ7vGOAX1OsIWgCX56nu1CPL2lssQ:ZPzwBSvcTQ7+OAX1O3CX56n4GL2lssQ

Malware Config

Extracted

Family

wshrat

C2

http://harold.jetos.com:1604

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 25 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops startup file 5 IoCs
  • Adds Run key to start application 2 TTPs 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Script User-Agent 10 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\proof of payment.js"
    1⤵
    • Checks computer location settings
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4968
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EsgAyEJrOf.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      PID:448
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\proof of payment.js"
      2⤵
      • Blocklisted process makes network request
      • Checks computer location settings
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1584
      • C:\Windows\System32\wscript.exe
        "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EsgAyEJrOf.js"
        3⤵
        • Blocklisted process makes network request
        • Drops startup file
        PID:4752

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    10KB

    MD5

    69231c3446c45e0863b0f2ce4ca548ee

    SHA1

    aa1b5083657f41f604bb5682e52f5016b434f929

    SHA256

    2d587addbe7f7cbe295ed2364fac0ed6d4d95cc4528672d46067ae0f5cf64535

    SHA512

    a1626d532d85d703e2e7aca73f51f1bca448e985a060d7c419bf56235fc69cbc007d4e0c2606e2d951a799d8de3f51c8c0c3333da3edc2f00f31dd5beb3c515b

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

    Filesize

    10KB

    MD5

    69231c3446c45e0863b0f2ce4ca548ee

    SHA1

    aa1b5083657f41f604bb5682e52f5016b434f929

    SHA256

    2d587addbe7f7cbe295ed2364fac0ed6d4d95cc4528672d46067ae0f5cf64535

    SHA512

    a1626d532d85d703e2e7aca73f51f1bca448e985a060d7c419bf56235fc69cbc007d4e0c2606e2d951a799d8de3f51c8c0c3333da3edc2f00f31dd5beb3c515b

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

    Filesize

    10KB

    MD5

    69231c3446c45e0863b0f2ce4ca548ee

    SHA1

    aa1b5083657f41f604bb5682e52f5016b434f929

    SHA256

    2d587addbe7f7cbe295ed2364fac0ed6d4d95cc4528672d46067ae0f5cf64535

    SHA512

    a1626d532d85d703e2e7aca73f51f1bca448e985a060d7c419bf56235fc69cbc007d4e0c2606e2d951a799d8de3f51c8c0c3333da3edc2f00f31dd5beb3c515b

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

    Filesize

    51KB

    MD5

    0d0b5b04e14fcc092409742a84532f26

    SHA1

    7d978a6f7f07629eb04a126d7a94a19662d0951f

    SHA256

    63ada20c4214f2995f841de3cffabfc465d5bff1b4bee0cf4ebac7be643fb67e

    SHA512

    b8cdb6164ccd45ad4ca94a3a5491e8d9a0b6a3e3aed56439994a59293141ae9ff3e80cecb4507373bb0ead9e796a83a381e2873f269bc3a100be365ef3c20c4f

  • C:\Users\Admin\AppData\Roaming\proof of payment.js

    Filesize

    51KB

    MD5

    0d0b5b04e14fcc092409742a84532f26

    SHA1

    7d978a6f7f07629eb04a126d7a94a19662d0951f

    SHA256

    63ada20c4214f2995f841de3cffabfc465d5bff1b4bee0cf4ebac7be643fb67e

    SHA512

    b8cdb6164ccd45ad4ca94a3a5491e8d9a0b6a3e3aed56439994a59293141ae9ff3e80cecb4507373bb0ead9e796a83a381e2873f269bc3a100be365ef3c20c4f