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
    13-06-2024 02:52

General

  • Target

    2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker.exe

  • Size

    39KB

  • MD5

    66eba98bbcb56bb7b5ca84bf44768da8

  • SHA1

    27ecf956d75561aef3ad83435c10913801d0bdb0

  • SHA256

    4c5992f4dd6efd13a97340ba09cc04d5443c8ab6f47f5d3f7f1ddd62c7f4709d

  • SHA512

    b2a9abbe2da045806e18cda0c25f2ad2a5470305d6c7b135ad0add33799edc23e8cfd02136edc23dfcc344457f432e9a443c08016ef3d47909515ddc242d4cf2

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYan/Mk:qDdFJy3QMOtEvwDpjjWMl7Tdn/t

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\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-13_66eba98bbcb56bb7b5ca84bf44768da8_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4156

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    7fd1c8e0b135ef4fa6a2a2004715af9c

    SHA1

    f629bafd640fd8c56dce10eaa3b5266c021f857a

    SHA256

    0385c43de34c02df12e4c8b10489ac61a3877b7c1e4f317499df674a2bdf8ae4

    SHA512

    7d5ae13febb618d41a093ac03c2d4e18a21e464d0d541fd8c75ae0c33c8e3ed7276c3085c26eaa07f0deb63edd255846a30778afbcbaacc37167f090023edc0a

  • memory/1180-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1180-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1180-4-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/1180-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/1180-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4156-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4156-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/4156-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4156-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB