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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • 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, 00:46

General

  • Target

    2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe

  • Size

    45KB

  • MD5

    c8392fd7f9747048b775e029fc651255

  • SHA1

    e3181adab7fa58f9b7878b5545585948db6bad88

  • SHA256

    249263186d9132ef1708aff564ec7d28ca17aad099555f12a8b427e2265381dd

  • SHA512

    6bda3a5d28795ca60778fa53900fef5b65e53228bbab76943a76631bd4ad786b7068523fc792603b741002205f6f81d1ff9dd9b45499217cc877b97e128f2058

  • SSDEEP

    768:79inqyNR/QtOOtEvwDpjBKccJVODvyLUVmV4:79mqyNhQMOtEvwDpjBzckp3

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_c8392fd7f9747048b775e029fc651255_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-29_c8392fd7f9747048b775e029fc651255_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1444
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2084

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    45KB

    MD5

    5cefdae41641d115c403eb210f319b3b

    SHA1

    38baf0806c2529ac1febe4478d2069e68d79e9c1

    SHA256

    7fc703e6cf76c7719db902a6e751ddff51d38800d211c44c0cb425a59321aa7c

    SHA512

    e5b04cac045f0a9aa78f771a7b7f2d08f46d3c75a24d494e967c39a80f0fe46032867d9caf3a2e460cc7ae1e76de3e0fa4a1e5079f653c084619ac70085f66a3

  • memory/1444-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1444-1-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/1444-2-0x0000000002280000-0x0000000002286000-memory.dmp

    Filesize

    24KB

  • memory/1444-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

    Filesize

    24KB

  • memory/1444-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2084-19-0x0000000000750000-0x0000000000756000-memory.dmp

    Filesize

    24KB

  • memory/2084-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB