Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-04-2024 11:45

General

  • Target

    202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe

  • Size

    64KB

  • MD5

    8d0d8d3e9bb5402ca915873fb47f5fdd

  • SHA1

    0f83e11c43fba407979e5e0cb9d27be59a8a8b8c

  • SHA256

    3259dfcb92307e10e0a55631a6977468e494686ab262e94b1409ca7becfbb9db

  • SHA512

    a458f125bde91ee372f1dcbe17bb754be4b9f6022e6d02a9473d5e4b755b8b0d41b0dd3915a8b4d027a550d66d5fa1ab273b83286556ada1e14d44239df71804

  • SSDEEP

    1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Cis:aq7tdgI2MyzNORQtOflIwoHNV2XBFV76

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 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\202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\202404308d0d8d3e9bb5402ca915873fb47f5fddcryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1904
    • C:\Users\Admin\AppData\Local\Temp\hurok.exe
      "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:3900
  • 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=3896 --field-trial-handle=2304,i,6987730730348465820,3913273227385401271,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3448

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      64KB

      MD5

      208b55f695e452eb3218ce2d4a0b9cc0

      SHA1

      00fe896be78a4094a69d5de0d00bdf68091d49ff

      SHA256

      8e4c1bf144deff8236037076111f85ce7c4fbe6c70c366a050088b3e8d17f85d

      SHA512

      6851a39fdc1bdaab72532257fe8ba5327c20ccbe13d47c3766d12ca0c88935c842eba5b6852e1bd8701c6c92f7b97c47ef9b56c1c0a06bc594bbd2ea0e618c98

    • memory/1904-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/1904-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/1904-2-0x0000000000400000-0x0000000000406000-memory.dmp

      Filesize

      24KB

    • memory/3900-24-0x00000000005A0000-0x00000000005A6000-memory.dmp

      Filesize

      24KB