Analysis

  • max time kernel
    145s
  • max time network
    162s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/04/2024, 08:29

General

  • Target

    2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe

  • Size

    41KB

  • MD5

    5f79b904f3c933ba01f0942611170409

  • SHA1

    52ddf3b9df48fabdc01ccffd1b1b2061af895afe

  • SHA256

    ad5d88f084f6d9406706dc63843355f72f23db44c5198b1226256846a747abef

  • SHA512

    56ce8e137752166dd02257faa4fc8ab6cc208b25218a3c5388db46c02571c7e4be5cef85f9a9277662ae45d23d1c7e78f849331649e04e2384ca93fac3c0bb2c

  • SSDEEP

    768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcU:X6QFElP6n+gJQMOtEvwDpjBmzDkWU

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-18_5f79b904f3c933ba01f0942611170409_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3976
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4124 --field-trial-handle=1928,i,13242902252791919845,10377620236057253993,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2204

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\asih.exe

      Filesize

      41KB

      MD5

      8ba74f19e2f1f64a899edd5449ec2b35

      SHA1

      3353a3526cf5ffa7f427a3c6fb74f7d7586bb69f

      SHA256

      8bd754b653bd8f8d9e9401d885b4e5f4fe6a21e98078714fb676d8a4fe62c9ee

      SHA512

      53bd074ac98cf21469b9db1db610d53983a48c60e60c5baf1f1507026d33018fb4eeb721a18452a6fd43be8ad17a2f81f48896d0d796b96bb4566593c69313ac

    • memory/648-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/648-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB

    • memory/648-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

      Filesize

      24KB

    • memory/3976-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

      Filesize

      24KB

    • memory/3976-18-0x0000000002000000-0x0000000002006000-memory.dmp

      Filesize

      24KB