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Analysis

  • max time kernel
    148s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 22:33

General

  • Target

    2024-04-10_c2ecd339d6dfdfebce9117cf2ccb76b4_cryptolocker.exe

  • Size

    99KB

  • MD5

    c2ecd339d6dfdfebce9117cf2ccb76b4

  • SHA1

    08c88307ecc5c82a8b6bb0b1d21aa7f72f7b26f7

  • SHA256

    43fff992c887b335fa45223ea47aa37d58acb0314ff1ffa2586c21989cbbdfe8

  • SHA512

    8d6b77a4225532afeec60e467be14605b5586eba54d18fed227bf7484da0a7021c071bf5ebb2b7e328ebf5a6a6f5b62eee549746c6f0486fe125560b5b07f491

  • SSDEEP

    1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwh:26a+2OtEvwDpjtzm

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 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\2024-04-10_c2ecd339d6dfdfebce9117cf2ccb76b4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-10_c2ecd339d6dfdfebce9117cf2ccb76b4_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3788
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:636

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    100KB

    MD5

    63e90af4a8dca401fa876eb88dc6271a

    SHA1

    e02079130cd6e52b535ca3c7d0414e2675666ca5

    SHA256

    4a85b4e1fa2a7a82ce4ed0bab1dce512bd723d66234cde7320c5383ab13f24c1

    SHA512

    724f8e34ad1bdcf2dcf941d00257869affbf5ad3d5f2b0cfd9e69e23ebf63b65469f8024c564abb5403c0ea046d56d2a52723d1a5d75c1b67fcff6fcd5446e4b

  • memory/636-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

    Filesize

    24KB

  • memory/636-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

    Filesize

    24KB

  • memory/3788-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3788-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/3788-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB