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Analysis

  • max time kernel
    141s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/03/2024, 02:39

General

  • Target

    2024-03-29_2ab576b9b03cca762a9b8ccee2b29e9c_cryptolocker.exe

  • Size

    70KB

  • MD5

    2ab576b9b03cca762a9b8ccee2b29e9c

  • SHA1

    410794f3d7d80ef85ca4843106b8ed1c7cbf37cf

  • SHA256

    9fcbf62a1923bf992fd4e0faba0e81945fa8bfd0ff30b060a10c46be9a69dfe0

  • SHA512

    24c2cd9a40d9d61ff52d5b17f686dad634953c612da40ae0bdc289cbe3d7917e7ac42a60461d099bbcd99ace3a4b0f9700d64125f4a0cb8c375a8d42a1b5a664

  • SSDEEP

    1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZO7:DW60sllyWOtEvwDpjwF85c

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\2024-03-29_2ab576b9b03cca762a9b8ccee2b29e9c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_2ab576b9b03cca762a9b8ccee2b29e9c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4940
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4620
  • 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=4004 --field-trial-handle=2280,i,716736634476467098,11449718822158202904,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:2256

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      71KB

      MD5

      5a845c4bf1e7efcc09a280d342a9db44

      SHA1

      42eb214080a52ea30c095dee7c215c1a5f1cf29e

      SHA256

      599291f1d8997a9f8758b4343dd21f91c30f04248a36efbb68658c5dcb66d165

      SHA512

      30f34723ad71c0cdcf0309c646de6682811d9fc2495c2eb6c058bde9af0ffaa99c52c5d7b0a12fd613a0035add7607112a886bffc1267bea5bc9f1580708ade4

    • memory/4620-18-0x00000000004E0000-0x00000000004E6000-memory.dmp

      Filesize

      24KB

    • memory/4620-19-0x0000000002090000-0x0000000002096000-memory.dmp

      Filesize

      24KB

    • memory/4940-0-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB

    • memory/4940-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4940-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

      Filesize

      24KB

    • memory/4940-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

      Filesize

      24KB

    • memory/4940-25-0x0000000000500000-0x000000000050B000-memory.dmp

      Filesize

      44KB