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Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/04/2024, 12:31

General

  • Target

    2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe

  • Size

    40KB

  • MD5

    32e9b8cbc7e3d9d25b573e011f434daa

  • SHA1

    b230309db674dd5aaed691c97fba00cb20bcb140

  • SHA256

    48a31191d917171e07aa35055462c4f1efa318843f557192ecf7ed19aa6f2aa1

  • SHA512

    abd7fe5eaa6a4c8d866384de53b66f7d87e954ac532f3478e0b73b8be9ee47d0d5e7ff2b2bb40acf2549aecbd537df0c3f8d2d86c9f94e560848006e78cfdfd7

  • SSDEEP

    768:XS5nQJ24LR1bytOOtEvwDpj66BLbjG9Rva/yYsZp:i5nkFGMOtEvwDpjR+viHs3

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 2 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\2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-19_32e9b8cbc7e3d9d25b573e011f434daa_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3404
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:4476
  • 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=4440 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2112

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      40KB

      MD5

      386a351674d40fe98a284dd08b824295

      SHA1

      f6db18e04f09f008b36388f16d48832630b39acf

      SHA256

      c41fd9fad50e5f0d6f7d1f44a69e787b6a2bbc45fc499a4b52320d32affe3787

      SHA512

      f00716bec8bee1a9ee91c9421ea958bb42142ca17f95c71eb868be4b1907ed747826b1607cafc151227327b70f1bc9a04e2ebae1494e9fccda636c6586338c73

    • memory/3404-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/3404-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/3404-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

      Filesize

      24KB

    • memory/3404-3-0x0000000000790000-0x0000000000796000-memory.dmp

      Filesize

      24KB

    • memory/3404-11-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/4476-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4476-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4476-27-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB