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Analysis

  • max time kernel
    145s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 11:49

General

  • Target

    2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe

  • Size

    47KB

  • MD5

    f191ad552423b6cb66793ff22dd37bef

  • SHA1

    ecf6aa74d33dc507a5d347e246268dffd11b0e6f

  • SHA256

    6bb01522743924f7b11a5592a4938945eaa3201625e1255bd6f01cefceeabc31

  • SHA512

    497b19d498706042dba396db7b0b901351a73e62fe3533ba89f235a724eee04070e69b74fb57c1311502769afd94d436800e6da574e25d2b607b55e51edcce0f

  • SSDEEP

    768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpUv:79mqyNhQMOtEvwDpjBzckqS+

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\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_f191ad552423b6cb66793ff22dd37bef_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:536
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1356
  • 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=4136 --field-trial-handle=2744,i,16362475727591565961,3676688664819797550,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:5012

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      47KB

      MD5

      02e81b68675d7b917eff805569960d31

      SHA1

      925abe87fd7546a3d28e598ce156dcd0c00922b1

      SHA256

      ce7bcc5be88aa7d535b8ed12c326e277f948d3a127caef7f306887122d76a7d4

      SHA512

      510cd9028abedf3c534fcfd119b75211cbef746cf8c11699dc81e1d2e8447b3fd1b5f3fda046361be32a41611aed65a0af1f9b9e07a94bc4f513154883d9f0d4

    • memory/536-0-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/536-1-0x0000000002190000-0x0000000002196000-memory.dmp

      Filesize

      24KB

    • memory/536-2-0x0000000002190000-0x0000000002196000-memory.dmp

      Filesize

      24KB

    • memory/536-3-0x00000000021B0000-0x00000000021B6000-memory.dmp

      Filesize

      24KB

    • memory/536-25-0x0000000000500000-0x000000000050F000-memory.dmp

      Filesize

      60KB

    • memory/1356-18-0x0000000000730000-0x0000000000736000-memory.dmp

      Filesize

      24KB

    • memory/1356-19-0x00000000020F0000-0x00000000020F6000-memory.dmp

      Filesize

      24KB