Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240221-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-02-2024 13:45

General

  • Target

    2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe

  • Size

    46KB

  • MD5

    5fa791410973dc5a959b69f48c12ea82

  • SHA1

    524539bcc4383d5c62191f3957973eef70ea8ae0

  • SHA256

    a77b88afcca0ba94a8c1d24c00c95c849e4d675134e82bfdd10af98bb613abe3

  • SHA512

    e195ce279d946254e8a9193474d9b07dd9234b7b8e60e0f9e3f448ed1e7a97da6dc75c53904e8556616c9c8e9f759aef5683215b6ef73dcf0180f359f5654c7b

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLtldedQ:xj+VGMOtEvwDpjk/eu

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\2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2884
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:4688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    47KB

    MD5

    d8c4b33edb3821fa68a59b5d548af879

    SHA1

    8a1ab8d3f5a97c905273ddb301e8a6444a3af6dd

    SHA256

    2e6e87ff3b06e208b92cde1f7f2c8f2f9a8ca3981dd5b251f3ed7510bc7eaacf

    SHA512

    db19c317879642037fa696b634b2b8c8705761290fa29e562f5a5418e246ca98e0e64e7e32883814eec0756457b69e2f09f5aa0dbbdb7ff5583d2836ddbf55a5

  • memory/2884-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2884-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2884-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2884-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2884-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4688-19-0x0000000002100000-0x0000000002106000-memory.dmp

    Filesize

    24KB

  • memory/4688-22-0x00000000020D0000-0x00000000020D6000-memory.dmp

    Filesize

    24KB

  • memory/4688-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB