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Analysis

  • max time kernel
    141s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/03/2024, 02:47

General

  • Target

    2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe

  • Size

    37KB

  • MD5

    ae7013fde62085839ed83f921accf8f7

  • SHA1

    42a3f5c75a47f58ba8c128141a37e2d30f4cc1ce

  • SHA256

    b124122a7f19b0a4ded2d57e335543e2463f002467884ceb4d0e721bce1c73c6

  • SHA512

    91753561d355c71dce8620737631d041de2731770896294b23e67be1c3a9b67495710ffb9c7d50683a8f4c0f3c74d87dc98cef26bd0c83660cc72fbac1c13ce0

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLCn:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLY

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 3 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-09_ae7013fde62085839ed83f921accf8f7_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1968
  • 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=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:1860

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      37KB

      MD5

      343366a96cb26616d8d2bca7314efdc7

      SHA1

      724b3b22edc4a9bb1b2689d4aacf15ce18aeb978

      SHA256

      334ba0af67ee5b90a40952f518d7f48c457d76051bcfbc1dccb1668f1fadd1cf

      SHA512

      04bbcbdd34b323cafa900a05115f2fceddc7fd8fc2a2a5959d8c2992c8a238467c76ff5b4e4210ad4c4f1e3d83ed0cd7234a055dd5d1d961f4ab8ec223559611

    • memory/1964-0-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/1964-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

      Filesize

      24KB

    • memory/1964-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

      Filesize

      24KB

    • memory/1964-3-0x0000000000810000-0x0000000000816000-memory.dmp

      Filesize

      24KB

    • memory/1964-17-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/1968-20-0x0000000000660000-0x0000000000666000-memory.dmp

      Filesize

      24KB

    • memory/1968-19-0x00000000007D0000-0x00000000007D6000-memory.dmp

      Filesize

      24KB