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Analysis

  • max time kernel
    147s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    24/04/2024, 05:47

General

  • Target

    2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe

  • Size

    62KB

  • MD5

    a29b4e73afa09890850d2cb52346e29a

  • SHA1

    f35216fd12e496b5f62fecb5c6e90530acaf43c7

  • SHA256

    69e55199015bbab8bfc5b3e496526fff6dc05767d8dbad88dafc784ee437444a

  • SHA512

    8d1709bca370629755b654eea0a0f83b39d2975a88c43729fd62508364e163f655b9bb495a0ef679650e46803a2d4a7915c8c30f69b1fedd5a5434c8bf809e78

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiZ:BbdDmjr+OtEvwDpjM8Y

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 IoCs
  • UPX dump on OEP (original entry point) 4 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\2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-24_a29b4e73afa09890850d2cb52346e29a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4344
  • 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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3744

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      62KB

      MD5

      f2cb432c5c1b7230d82d1de7e8194381

      SHA1

      9fd554f35512ce6fe2bb965675c16ec3e5f5f57a

      SHA256

      7e5f53d139e855717b967f482f09b88e465f6ed1dddeceeb1090c87fd16bb39e

      SHA512

      0fb21fb984d9f917a656b138464ed39866d3c5f3ddff366bcb84735d1215c78a081737b1287a71579d0cca97e52603fadc35ae8b41921520a456876740a35a7e

    • memory/956-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/956-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/956-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/956-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/956-17-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4344-19-0x0000000002100000-0x0000000002106000-memory.dmp

      Filesize

      24KB

    • memory/4344-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

      Filesize

      24KB

    • memory/4344-26-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB