Analysis

  • max time kernel
    145s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    21-04-2021 06:02

General

  • Target

    KR033172A562700243.PDF.exe

  • Size

    789KB

  • MD5

    5ca9ea11f89e982fc93ad12e656648a8

  • SHA1

    0d0bd9cb9549638218db8c3442a3047e25ffc9a9

  • SHA256

    9a0550bcf1c770a3febe17adb59aa91717654e4d660fca29bd7ccff14da6256f

  • SHA512

    cd4f2d1ba153dea1d28a12d9566fdf5bb183ba795584b7e6dc049cb5e4fb1c007fa6581c1cec77f0c0917b9050300dc54213fdc877ab5c69905237dd8dff8262

Malware Config

Extracted

Family

netwire

C2

194.156.90.31:5008

Attributes
  • activex_autorun

    false

  • activex_key

  • copy_executable

    false

  • delete_original

    false

  • host_id

    APRL-WORK

  • install_path

  • keylogger_dir

    %AppData%\Logs\

  • lock_executable

    false

  • mutex

  • offline_keylogger

    true

  • password

    Password

  • registry_autorun

    false

  • startup_name

  • use_mutex

    false

Signatures

  • NetWire RAT payload 3 IoCs
  • Netwire

    Netwire is a RAT with main functionalities focused password stealing and keylogging, but also includes remote control capabilities as well.

  • Suspicious use of SetThreadContext 1 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 behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\KR033172A562700243.PDF.exe
    "C:\Users\Admin\AppData\Local\Temp\KR033172A562700243.PDF.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:512
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qZYahesl" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7EEA.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:4016
    • C:\Users\Admin\AppData\Local\Temp\KR033172A562700243.PDF.exe
      "{path}"
      2⤵
        PID:2728
      • C:\Users\Admin\AppData\Local\Temp\KR033172A562700243.PDF.exe
        "{path}"
        2⤵
          PID:2772

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp7EEA.tmp

        MD5

        0e6bc0c8be74ddebc8e30c44e7cac2fc

        SHA1

        0f5b45070bd18ad2fc87183a3f685e8937a6f753

        SHA256

        a86f67266049224a7a5c1eb4be6489543db2848038df683c38e686f7002b13df

        SHA512

        66282a7d2e39d74c0950e68f12286e249452378e3f5af30f15db519bb2d5bdc479ec59ead12c5c3f276eaaddd3285adf5a15081030f8de33c7fa5c7671c613bd

      • memory/512-121-0x0000000006A60000-0x0000000006A61000-memory.dmp

        Filesize

        4KB

      • memory/512-117-0x0000000004FC0000-0x0000000004FC1000-memory.dmp

        Filesize

        4KB

      • memory/512-118-0x0000000005120000-0x0000000005121000-memory.dmp

        Filesize

        4KB

      • memory/512-119-0x0000000004EF0000-0x0000000004F82000-memory.dmp

        Filesize

        584KB

      • memory/512-120-0x00000000054A0000-0x00000000054AE000-memory.dmp

        Filesize

        56KB

      • memory/512-114-0x00000000006A0000-0x00000000006A1000-memory.dmp

        Filesize

        4KB

      • memory/512-122-0x00000000086F0000-0x00000000087AD000-memory.dmp

        Filesize

        756KB

      • memory/512-123-0x000000000AEA0000-0x000000000AF19000-memory.dmp

        Filesize

        484KB

      • memory/512-116-0x00000000054C0000-0x00000000054C1000-memory.dmp

        Filesize

        4KB

      • memory/2772-126-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/2772-127-0x000000000040242D-mapping.dmp

      • memory/2772-128-0x0000000000400000-0x0000000000433000-memory.dmp

        Filesize

        204KB

      • memory/4016-124-0x0000000000000000-mapping.dmp