Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-05-2024 04:08

General

  • Target

    2024-05-25_c96f0ce69b92a64a417cee13352db579_cryptolocker.exe

  • Size

    67KB

  • MD5

    c96f0ce69b92a64a417cee13352db579

  • SHA1

    a2bc17f5dcc2ed89e26997a36391ebdc7f18a9d1

  • SHA256

    27d1521b481a697c2c48557f887a78d73304655833b8f2e9931ed17fdd5cb466

  • SHA512

    96c5f0fadaf72bb5da46dc34d959709f2835463ed27dd0677b92a507514e4b47f24da6631be0ca5a9edf42d3db8634162ae032a683630239c860ef27c2ad1093

  • SSDEEP

    1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdfGyB:TCjsIOtEvwDpj5HE/OUHnSMYG

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 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).

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-25_c96f0ce69b92a64a417cee13352db579_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_c96f0ce69b92a64a417cee13352db579_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4880
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:1508

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    bfdac6e8bd7c5838e6468a672d2440db

    SHA1

    0597c722b39925dfeea8a8278d981fea8be23744

    SHA256

    3f9a5e2a2d5b4f0de1e9e4614529f761e454cdd79ecf61b8426363a0bec99c7c

    SHA512

    8dd9d7017c80abeb0068184b2b4784a73083826d0b7572afb12bd10f0aa18ae01e150b67b571be27cb5f2d67e6431b1cbdac7c6f52f99aa03e96045b15fdf284

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/1508-18-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/1508-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1508-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1508-49-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4880-0-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB

  • memory/4880-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4880-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4880-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4880-17-0x0000000000500000-0x000000000050E000-memory.dmp

    Filesize

    56KB