Analysis

  • max time kernel
    150s
  • 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
    16-06-2024 14:32

General

  • Target

    2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe

  • Size

    41KB

  • MD5

    8d092c6c9946b687db09ec894813eed3

  • SHA1

    ebeeaa4e4216535d7ab9cf06f238824057f6bf02

  • SHA256

    8f7e8810121b11948c5a2ec578907c78329aa95a7967bdf43604e283522bc4a7

  • SHA512

    d7fa1688f32d977f93cf0ac033afffb918d2b3d68c379714277004388dccb7aaec64e1f41c922466805fb37d958c94561ac8522f44fb8cee5bab07026967aaad

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYL:qDdFJy3QMOtEvwDpjjWMl7TS

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3720
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3384

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    f2d6ee42635d8741c99e8a1f5e7d62bb

    SHA1

    d398bf6d917e8588ac68b0d8a9815a38018da1b8

    SHA256

    dd53f991ce3c32f2cdfe6cdd3dcb97d0d637858e927ce07913023b51df091c84

    SHA512

    516cd531d74a3c5a818a6b88111be2368c468606b27cf0692879d906fe00c8acb7805b4f89a7729406b09fea89f2309e97f2fc243d9951ff53302b0e6cd49ad5

  • memory/3384-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3384-21-0x0000000002000000-0x0000000002006000-memory.dmp

    Filesize

    24KB

  • memory/3384-27-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

    Filesize

    24KB

  • memory/3384-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3720-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3720-1-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/3720-2-0x0000000001F70000-0x0000000001F76000-memory.dmp

    Filesize

    24KB

  • memory/3720-9-0x0000000000670000-0x0000000000676000-memory.dmp

    Filesize

    24KB

  • memory/3720-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB