Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/11/2024, 05:29

General

  • Target

    2024-11-20_fa10106133d53bd2e43f0afc44ecd329_cryptolocker.exe

  • Size

    72KB

  • MD5

    fa10106133d53bd2e43f0afc44ecd329

  • SHA1

    122c6d5dcf2913ce264c9f70fce8f41455d0d90e

  • SHA256

    a34a7a47071c6148f4b4c86696df05760ca10f7c6423798d4d60c69a7c578e49

  • SHA512

    1586e485fe6369acf02e3c6cc7f66f01f386777b29fefecaed4d4d0178c53989c79ab6ad20895a61ae50d8d86f067d986eda89f42b8f1791390c9e811f152084

  • SSDEEP

    1536:nj+4zs2cPVhlMOtEvwDpj4H8u8rZVTs9N:C4Q2c94OtEvwDpj4H8z8

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-20_fa10106133d53bd2e43f0afc44ecd329_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-20_fa10106133d53bd2e43f0afc44ecd329_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3760
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Modifies system certificate store
      PID:2076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    72KB

    MD5

    2f0ea0f2874d80a2c0dee08a0801ef4c

    SHA1

    f98bcdf60d222408fbbef7802fd9161d55638bbf

    SHA256

    05c9af57cd46812ad6c085dedd672672d7878278d25c6bdda814348c9f5af5a3

    SHA512

    04d6eae441199140721b68931700cce1873e33d009f094abe5403465dfea42ea7d62850e704464af6c88b5c680c482ee7d6be7d2f71144fa42a91587e66e0fcc

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2076-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2076-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2076-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2076-51-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3760-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3760-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3760-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/3760-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/3760-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB