Analysis

  • max time kernel
    1793s
  • max time network
    1786s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    08/12/2021, 15:49

General

  • Target

    SHIPMENT_DOCUMENTS PDF.js

  • Size

    531KB

  • MD5

    cf4ec0d22c787775c9f46dd0fe19da33

  • SHA1

    f0379f9363c0c9955d9b71064a2879fd6b1cff5c

  • SHA256

    c399dbe473150a5d2a9d3676d81971de66f2daf5360d2be26e62b5533c4fcbad

  • SHA512

    7248e804832f6eb2fb13e73af73a41a695fa131d239ce2b5aa3495858bd387053569e1d1a0e530a1e4f1a949a7c87e0995ad9443b9e2ec49d9a09889e8ccbb1f

Malware Config

Signatures

  • STRRAT

    STRRAT is a remote access tool than can steal credentials and log keystrokes.

  • Vjw0rm

    Vjw0rm is a remote access trojan written in JavaScript.

  • Blocklisted process makes network request 64 IoCs
  • Drops startup file 3 IoCs
  • Loads dropped DLL 2 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 18 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe "C:\Users\Admin\AppData\Local\Temp\SHIPMENT_DOCUMENTS PDF.js"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:952
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\IwhBHZSsWd.js"
      2⤵
      • Blocklisted process makes network request
      • Drops startup file
      • Adds Run key to start application
      PID:268
    • C:\Program Files\Java\jre7\bin\javaw.exe
      "C:\Program Files\Java\jre7\bin\javaw.exe" -jar "C:\Users\Admin\AppData\Roaming\ypvcsiztsk.txt"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\Program Files\Java\jre7\bin\java.exe
        "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\ypvcsiztsk.txt"
        3⤵
        • Drops startup file
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious use of WriteProcessMemory
        PID:1916
        • C:\Program Files\Java\jre7\bin\java.exe
          "C:\Program Files\Java\jre7\bin\java.exe" -jar "C:\Users\Admin\AppData\Roaming\ypvcsiztsk.txt"
          4⤵
          • Loads dropped DLL
          PID:2012
        • C:\Windows\system32\cmd.exe
          cmd /c schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ypvcsiztsk.txt"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1192
          • C:\Windows\system32\schtasks.exe
            schtasks /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\ypvcsiztsk.txt"
            5⤵
            • Creates scheduled task(s)
            PID:1028

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/952-55-0x000007FEFBEB1000-0x000007FEFBEB3000-memory.dmp

          Filesize

          8KB

        • memory/1484-64-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-108-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-106-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-105-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-104-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-101-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-100-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-99-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-98-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-92-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-63-0x0000000000120000-0x0000000000121000-memory.dmp

          Filesize

          4KB

        • memory/1484-62-0x0000000002210000-0x0000000002480000-memory.dmp

          Filesize

          2.4MB

        • memory/1484-61-0x0000000002210000-0x0000000002480000-memory.dmp

          Filesize

          2.4MB

        • memory/1916-113-0x0000000002290000-0x0000000002500000-memory.dmp

          Filesize

          2.4MB

        • memory/1916-122-0x0000000000420000-0x0000000000421000-memory.dmp

          Filesize

          4KB

        • memory/1916-123-0x0000000000420000-0x0000000000421000-memory.dmp

          Filesize

          4KB

        • memory/1916-112-0x0000000000420000-0x0000000000421000-memory.dmp

          Filesize

          4KB

        • memory/2012-133-0x0000000000320000-0x0000000000321000-memory.dmp

          Filesize

          4KB

        • memory/2012-134-0x00000000020A0000-0x0000000002310000-memory.dmp

          Filesize

          2.4MB

        • memory/2012-140-0x0000000000320000-0x0000000000321000-memory.dmp

          Filesize

          4KB