Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/11/2024, 18:39

General

  • Target

    2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe

  • Size

    37KB

  • MD5

    856b40d3570b6e5c732eeb5e85e70f0a

  • SHA1

    2d4ec5c1674f0c96fa7bde039589e33750e421a8

  • SHA256

    5d98071135227b0f1cee8e1ffafbbc70148ec2ce67b97ea08000f3b9b0289b7a

  • SHA512

    5dff3b7dcd38e0471e01e818a484d1bea9529cf7f40428f2d159799debf2c86b3846cfce9210a6da50421ca98c8a22854dae136fbc08bad8603a3a7b1e99e792

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkIT6r:qDdFJy3QMOtEvwDpjjWMl7T6r

Score
7/10

Malware Config

Signatures

  • 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 4 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.

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-11-09_856b40d3570b6e5c732eeb5e85e70f0a_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:956
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2964

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    37KB

    MD5

    7791cb0245dd7033123f4b9257171957

    SHA1

    69b083e578638afcfb41a8368cba464dcbf3f870

    SHA256

    096dadec574232f58a2814ca019ebe34599fde3801601aab44eade4c26c30c34

    SHA512

    b5a87bc9db4679603a60b2e691f64f2f0250a8ee175c0ee28745b48d29c396f1b3c91422731b2f04e48a472eb44af9f6ca8d0d3cbba5f3f65c316082e82658c3

  • memory/956-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/956-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/956-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/956-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/956-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2964-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB