Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 21:55

General

  • Target

    2024-06-10_3ab14c8b12595cb67cbeaae80b7ce350_cryptolocker.exe

  • Size

    39KB

  • MD5

    3ab14c8b12595cb67cbeaae80b7ce350

  • SHA1

    271e3cde129f2895889ad45ca4ae2daf6eec707f

  • SHA256

    aef91f1353bad4668398240f834efaf398f78470aae457cf40652a95e2492c72

  • SHA512

    8d9cbec59a4c83d4dbe4942ff65035b6b74605ced77194f0bcb7e6c77f2930be7e1fccce95d6521bf53c3036f7945bc0a7695b7d5aea289ef62edded21c206f4

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYabDj:qDdFJy3QMOtEvwDpjjWMl7Tdr

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 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
  • UPX packed file 5 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-10_3ab14c8b12595cb67cbeaae80b7ce350_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_3ab14c8b12595cb67cbeaae80b7ce350_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3160
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:716

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          40KB

          MD5

          8cb4c6c8902222c1902c8ddf9df2bc93

          SHA1

          8aa57fab00ddeab257fa206ede6ff4225c5e7960

          SHA256

          2e327eef4bef26d3cca80153f719e788c2e7fbfd644f7c48cc4355be2b3539ca

          SHA512

          26b7cf54d255a67d58ce58e88d1840f5ea7a00939589ce2ac933985e84cf554353ffaa52c5b06e0ed4aae9783da291502e52d9d6e13d2f9adaaccf000f379a68

        • memory/716-19-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/716-22-0x00000000006C0000-0x00000000006C6000-memory.dmp

          Filesize

          24KB

        • memory/716-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

          Filesize

          24KB

        • memory/716-28-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3160-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3160-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB

        • memory/3160-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

          Filesize

          24KB

        • memory/3160-9-0x00000000020D0000-0x00000000020D6000-memory.dmp

          Filesize

          24KB

        • memory/3160-18-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB