Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    29-12-2021 17:15

General

  • Target

    receipt_ups.js

  • Size

    208KB

  • MD5

    07e92aeca1fc47c58589ba6ea8d0bbb8

  • SHA1

    4f133e5a32a04d2b815bbca2eb27790cf5b1e167

  • SHA256

    e83d9228e3dbcc078c9b8ffc9dde4ae2d20c75500bb99262050ad5ac773986c1

  • SHA512

    0d248627b1e14d8730155c3355e5d901ffac1fb9b381c39c77a9442c0996c812f51f5812101b7e331d7057350d53c23706a1c06ec6a1aece67fda3d1942cc498

Malware Config

Signatures

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 35 IoCs
  • Drops startup file 3 IoCs
  • Adds Run key to start application 2 TTPs 4 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 4 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\receipt_ups.js
    1⤵
    • Blocklisted process makes network request
    • Drops startup file
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:3860
    • C:\Windows\System32\wscript.exe
      "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\DleOzlJNgp.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:648
    • C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\receipt_ups.js
      2⤵
      • Creates scheduled task(s)
      PID:3560

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    MD5

    ae6a4d4146c2016f53de160cca6ae2c4

    SHA1

    aaad5e3b71828ea96849210735a351c910778ea4

    SHA256

    dfe7f0966bc2293afe0c32184879e1611cd3841b1f45390e4c186f63b4422f98

    SHA512

    ccfca2638927d39f561463e9c615f0de6f3499523165e0338a5ce660a79a23e4993adc65713e4246e7939267b3abfbfd6b73b4172d34dd5719f01a0a44c18e9d

  • memory/648-115-0x0000000000000000-mapping.dmp

  • memory/3560-117-0x0000000000000000-mapping.dmp