Analysis

  • max time kernel
    135s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2024, 13:34

General

  • Target

    2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe

  • Size

    94KB

  • MD5

    c88cbe41bdb13d323f4de766e6960583

  • SHA1

    0ce178f63fd50a9a9b6785774d5b1162cce6a67f

  • SHA256

    28de5650e01c9d13d2e346141daec022dd9ba4302b59318ffaf84b7437b5678c

  • SHA512

    c4dc2c49d5cfb6687df89ef0bffdf404d01cddfc09e07e66550bb1575859ef1960204f5c892b6d705cb25da42e5acc15500c35717276f39fc248e60e584c55cd

  • SSDEEP

    768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/R:xj+VGMOtEvwDpjubwQEIiVmkxv/R

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 2 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\2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-01_c88cbe41bdb13d323f4de766e6960583_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4852
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:4536

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    94KB

    MD5

    125cc2d2323ca7958c79cd51938db94c

    SHA1

    223bee1ed18586900f91b5edc7e3279cdd50b636

    SHA256

    2ff1318da7555f9650b3b5c26b2c61adc17c3a4b81df398a01bd22fac2fd4345

    SHA512

    94f4e295a6ba5ed07c613729205213b6001e63291faefe9d09a61def0d2b99b32a58a1e4235ceca99a70fee683ac3d64496f0096c37aca4b5fd5660a5231327e

  • memory/4536-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4536-21-0x00000000021D0000-0x00000000021D6000-memory.dmp

    Filesize

    24KB

  • memory/4536-54-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4852-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4852-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4852-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4852-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4852-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB