Analysis

  • max time kernel
    143s
  • 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
    06/03/2024, 00:33

General

  • Target

    2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe

  • Size

    102KB

  • MD5

    61038d922c70729ccdef0d8a65e5b0c0

  • SHA1

    66d2ca3a749ab88256146f8ffa81f64e95525795

  • SHA256

    07a948d3d8e4c2a18b69f8972ccaa4c829c094e37c2aae7654bd4a636bf47381

  • SHA512

    90db9124f3ec99b820c6d9c5e91ea3a6ad63bb8b24c7eff8d0e70fa7d3ac3089c40d3bc6d3c3607632c3a81527e83719d5d99582eabaca6ed54784984be9adfe

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2mwVek:xj+VGMOtEvwDpjubwQEIiVmkxv/yk

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_61038d922c70729ccdef0d8a65e5b0c0_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4440
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2936
  • 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=4204 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2116

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      102KB

      MD5

      b8e238c75f520098cd0e89b63ffcead7

      SHA1

      d781c7cb663a875695442a7a2bb44a396e47077a

      SHA256

      3c42fb86d01bd3e3f4f747778fdf10f57f3f1a31e8c6cb271f1595eb13dc5d4b

      SHA512

      745480a181ee2f2d8781a71be87b2095b147bf878b26aa292fa3c9509fcdd8051a7bf5abc37176278ee97d24e23b1173a71ed466b9529fe8c7ff1cf8229bea4a

    • memory/2936-18-0x00000000005E0000-0x00000000005E6000-memory.dmp

      Filesize

      24KB

    • memory/2936-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/2936-26-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4440-0-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB

    • memory/4440-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4440-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4440-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4440-22-0x0000000000500000-0x0000000000510000-memory.dmp

      Filesize

      64KB