Analysis

  • max time kernel
    150s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/06/2024, 00:52

General

  • Target

    2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe

  • Size

    43KB

  • MD5

    d5e694be19a9867676f26bf6a91c9385

  • SHA1

    d51f83208da881a3e83930af0c9e5c1d1b745d6b

  • SHA256

    38b6fd3c07d124506524e2a885baf8cbd8f625e0e37267a7e4fa30b132d38cda

  • SHA512

    14f0bfca93da249d7886d59a272029be12b33e38e9fd75bae6bacf13821a3a584f661b38d2d14b2994defb2d5058c1c51bed3bf069ed2679b604313936676c2c

  • SSDEEP

    768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAI:bCDOw9aMDooc+vAI

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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
  • 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\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_d5e694be19a9867676f26bf6a91c9385_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3076
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:860

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          43KB

          MD5

          b928327676574ade9802e08310744208

          SHA1

          c51bf7259d5f7a1fe25f22acdd40af8554b668af

          SHA256

          6ba95cc793c681a4ef51f5e2d2ab101031dd896ef9f3065f8e8c2b203846fb30

          SHA512

          82b82a6ec4205f72813e24482bb724f8a56bea5e84452eb0b33569203f5c113741f647f86226704dd205dbe7c7a881934cc309f2048094dfe2a581469b142fdc

        • memory/860-17-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB

        • memory/860-20-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/860-26-0x0000000000590000-0x0000000000596000-memory.dmp

          Filesize

          24KB

        • memory/860-27-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB

        • memory/3076-0-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB

        • memory/3076-1-0x0000000002040000-0x0000000002046000-memory.dmp

          Filesize

          24KB

        • memory/3076-2-0x0000000002070000-0x0000000002076000-memory.dmp

          Filesize

          24KB

        • memory/3076-9-0x0000000002040000-0x0000000002046000-memory.dmp

          Filesize

          24KB

        • memory/3076-18-0x0000000008000000-0x000000000800A000-memory.dmp

          Filesize

          40KB