Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14-06-2024 01:42

General

  • Target

    2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe

  • Size

    41KB

  • MD5

    def904c13f6dd02ce4898ac7ec51b55a

  • SHA1

    07cd5cbfebd7c56c3e19756cfe73c6f1c5277b01

  • SHA256

    dacfb4603c583d34cc75b3edc8b37f038d4d80c137797b27a87a6d58c0c0103e

  • SHA512

    3d64a1fa12110baccc18c8ebea693aaf3f3a4ae0d4c14764e46ed5678fae79a17aedac044c717c38569f2302b72467438e14a0842fbff6840f6b54751f2593d3

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYj:qDdFJy3QMOtEvwDpjjWMl7TC

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\2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-14_def904c13f6dd02ce4898ac7ec51b55a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1848

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    80447e08c396579494a2439f90f29c1c

    SHA1

    3c7279e4352c906f01a4b423b0c1155504cae164

    SHA256

    22315ceb40f00ccca0bfb35b59665fd61a65858cfa45ddd5d43db8e503fc21b8

    SHA512

    e733b98530bdee869613a6b4e31ece859b2b2e57f77cadcb413e5f24fd6c43fc24025a5b44666a6d0199c8afa7ff4295ab530d98c12386bec9ff955b79b19075

  • memory/1696-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1696-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1696-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1696-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1696-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1848-27-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/1848-21-0x0000000000640000-0x0000000000646000-memory.dmp

    Filesize

    24KB

  • memory/1848-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1848-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB