Overview

overview

8

Static

static

4

832cafb6e8...9d.exe

windows7_x64

8

832cafb6e8...9d.exe

windows10_x64

8

Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    30-01-2022 04:39

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General

  • Target

    832cafb6e88dd4723002d8b0e2221b3d357c22aaf3cfda3de2017b6378b22d9d.exe

  • Size

    1.3MB

  • MD5

    3c9aa6dc8c4501ffa2798f044df53438

  • SHA1

    0076a7342908f675c1d7bf630ec6912cd75060dd

  • SHA256

    832cafb6e88dd4723002d8b0e2221b3d357c22aaf3cfda3de2017b6378b22d9d

  • SHA512

    0406541e3a89abfefaca7834a3d5cae07d2ce876ef0fa47a51915e464cb80fcad2cd4bb45b81ba026cf15616eafcb6cd97fac73037a1c0635835f376ae398fca

Score
8/10
linkpdfpersistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • HTTP links in PDF interactive object 1 IoCs

    Detects HTTP links in interactive objects within PDF files.

    pdflink
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\832cafb6e88dd4723002d8b0e2221b3d357c22aaf3cfda3de2017b6378b22d9d.exe
    "C:\Users\Admin\AppData\Local\Temp\832cafb6e88dd4723002d8b0e2221b3d357c22aaf3cfda3de2017b6378b22d9d.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:604
    • C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\九州の温泉紹介-九州観光旅館連絡会-平成25年.pdf"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:936
    • C:\Users\Admin\AppData\Local\Temp\winword.exe
      "C:\Users\Admin\AppData\Local\Temp\winword.exe"
      2⤵
      • Executes dropped EXE
      PID:564
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\832CAF~1.EXE > nul
      2⤵
      • Deletes itself
      PID:560

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\winword.exe
    MD5

    6dc5d006eafa5e135ec89fa456060b58

    SHA1

    e7cd3a1e6a1017401ade9bf55456553313e3a8c1

    SHA256

    ff13f9b00580f19e389d8852144ecb6ae7876e1091861aad796ab619fea33398

    SHA512

    a7f40c7226134d811c8d8035fbbe47220a480356be83d86b28518402c04156f4f905f81d00f2e342001c788209e26e7a6f4b7e74798b17d176a4a23800b6c66b

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\九州の温泉紹介-九州観光旅館連絡会-平成25年.pdf
    MD5

    8778792f2917620f454f8e1d13670f60

    SHA1

    8c6a3802df06d89b5d325491d9720e3f2ee67e04

    SHA256

    44aacc0bf620886c1ed51f6b19f0c63229b10114db4ee322daede67dc7953bf6

    SHA512

    5f01867193f58149565c6d4f14f34c0f1e8ff2872e33f5a09c28ed0165200c3383943f76cbe2c8f30a5ee8cafb92b24fbb4b2709835e0b03a08bd80d96042829

    Download Submit

  • \Users\Admin\AppData\Local\Temp\winword.exe
    MD5

    6dc5d006eafa5e135ec89fa456060b58

    SHA1

    e7cd3a1e6a1017401ade9bf55456553313e3a8c1

    SHA256

    ff13f9b00580f19e389d8852144ecb6ae7876e1091861aad796ab619fea33398

    SHA512

    a7f40c7226134d811c8d8035fbbe47220a480356be83d86b28518402c04156f4f905f81d00f2e342001c788209e26e7a6f4b7e74798b17d176a4a23800b6c66b

    Download Submit

  • memory/604-54-0x0000000075191000-0x0000000075193000-memory.dmp

    Filesize

    8KB

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