Analysis

  • max time kernel
    138s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2024 11:33

General

  • Target

    2024-01-25_c32a6aab38794db58b44748a87822a6f_cryptolocker.exe

  • Size

    62KB

  • MD5

    c32a6aab38794db58b44748a87822a6f

  • SHA1

    573fbb0f2ebdff838d72116c5fcdcfa7ac987e0b

  • SHA256

    e8117962a8feaa094bd9783ec6618c76b4483e8032af750894beba6e903f66e5

  • SHA512

    359839fc97476d093100cfae3e3f132febc217576e82efb0657ee337ebd94fcca8af31e2a69d533647483540445dd0706ef3ed77cb902a9d9177d9b61edbb6f7

  • SSDEEP

    768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEM5:6j+1NMOtEvwDpjr8ox8UDEw

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • Detects executables built or packed with MPress PE compressor 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\2024-01-25_c32a6aab38794db58b44748a87822a6f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_c32a6aab38794db58b44748a87822a6f_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3324
    • 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:800

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    62KB

    MD5

    1a9301b47250285312e18401302be999

    SHA1

    83f82b53c477b4ca07ee81663029de3e024f0787

    SHA256

    6dd8d9b632a48d60d2cd24f755fbfd76ec68b7c6b6b98e4f8d6e8126bde16488

    SHA512

    0669af4148e84d275507152d5c05c54143af726c9f7808c54bce952a0e0c836681ad87bdfd731bd677cbb8747f2428cebcb275c1415322fdf4e01f08459cc492

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

    Filesize

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/800-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/800-20-0x0000000000510000-0x0000000000516000-memory.dmp

    Filesize

    24KB

  • memory/800-26-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/800-49-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3324-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3324-2-0x0000000000570000-0x0000000000576000-memory.dmp

    Filesize

    24KB

  • memory/3324-1-0x0000000000570000-0x0000000000576000-memory.dmp

    Filesize

    24KB

  • memory/3324-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

    Filesize

    24KB

  • memory/3324-19-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB