Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02/06/2024, 00:52

General

  • Target

    2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe

  • Size

    53KB

  • MD5

    cdcd4fd2a1334baaf591246721695dfd

  • SHA1

    ae5e840b9e2244a36d1d55ee01a589b9d8079c4a

  • SHA256

    b35cf07f9383c1c405d9a9644d15c304284bd5933d028e2b8f47be9db69d79a0

  • SHA512

    4572f7630a4138b84279d7a9d0e460db688d0b5bc7f4504134cf301e18ba793378fa8fb63d9b6a28c94957c462e1bb999a6ea7fe776f98ffc428244244aec0af

  • SSDEEP

    768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOXFVI:bODOw9acifAoc+vD

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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).

  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2696
    • C:\Users\Admin\AppData\Local\Temp\lossy.exe
      "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
      2⤵
      • Executes dropped EXE
      PID:2828

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          53KB

          MD5

          650d41a6d4f0f62a71b0787f91721071

          SHA1

          80ec2bcea5848e880e615250eb6d072c014171d5

          SHA256

          40de92f1e3a68fec56b2f38694ca1c7543628b8099d7e3878164e7cf75c42d2a

          SHA512

          1980f0f8c25559dafde106d16f44c2729bb930fcd2695f50a2a219e4a7201ef1a75f4b0d2acaa2d79665838a993cda7503123f0ed0971950df5ad3b329e4773f

        • memory/2696-0-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/2696-1-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2696-2-0x00000000003C0000-0x00000000003C6000-memory.dmp

          Filesize

          24KB

        • memory/2696-9-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2696-15-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/2828-17-0x0000000001C10000-0x0000000001C16000-memory.dmp

          Filesize

          24KB

        • memory/2828-25-0x0000000008000000-0x000000000800F000-memory.dmp

          Filesize

          60KB

        • memory/2828-24-0x0000000000260000-0x0000000000266000-memory.dmp

          Filesize

          24KB