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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/03/2024, 05:43

General

  • Target

    2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe

  • Size

    39KB

  • MD5

    3a22ffd192efe0cb5e9a604057354d92

  • SHA1

    57e76774aec6a9b135e0962af20d05d6f8153361

  • SHA256

    05ddfe9cf686a3b55f39a16c16c59a61dc129b5e7ac1fe51fe80483bf9493110

  • SHA512

    9f46b3119ad74037848efe510a765623b991633768f1df89b22101bdfd1307db0f5ca87a184c4aa2ecc140e72b1cf109edb75f4bf0766af2705bdd20cf074e39

  • SSDEEP

    768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkL7vH:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLL

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 4 IoCs
  • Checks computer location settings 2 TTPs 1 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).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_3a22ffd192efe0cb5e9a604057354d92_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2112
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3500

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    39KB

    MD5

    f4989384ce667e99d2ed3c081118cfe1

    SHA1

    ef9f5c3d86f92fac7ef6adc0656573bb911d59ad

    SHA256

    9bd39ee9d3626ee612579d93b5c40de8ca6c469519a7041d592021afafb83a28

    SHA512

    2af5d9f805ac7cda0dafe76c8aaea44883b62f6ce4c72c93496b8a747b6aaa9cb590ce492e41582ed02b3eebcfd665f2445b8cb13c118ea642dd13cc9dfdf9ab

  • memory/2112-0-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/2112-1-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/2112-3-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/2112-2-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/2112-18-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/3500-17-0x0000000000500000-0x000000000050B000-memory.dmp

    Filesize

    44KB

  • memory/3500-22-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/3500-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB