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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    26/01/2024, 19:31

General

  • Target

    2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe

  • Size

    79KB

  • MD5

    6b6c9134af429a39a209cea1135cbd5d

  • SHA1

    7c7299a622d898e7cf760a7a1e6d65c34796b32a

  • SHA256

    7ff492cdfec5f0f9d945e5da32cc1a670b3d8ffcc19c8ab0c20c5e426b0911f0

  • SHA512

    b184b9fceb52b32f7046f5adb58cfc6cece56eae2041497310813d02b69feb0a0dd72343bef25a629bd58ffa99723cc68706dd95a198b4c92f7865e8ea34d11b

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdC:T6a+rdOOtEvwDpjNtA

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 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 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2964
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    79KB

    MD5

    0f09231d0868a1102443e91fe3e8e86f

    SHA1

    53989f906415e00fc615ebe2a94085727f32f103

    SHA256

    c431e9b0c75fc6781d406397def32ee703f685562c725b94f315dfb90823dbd3

    SHA512

    da36a0aca0685041948d5e9085c290cd0270e537452b83166d6c0207cdd1055c12bbb131206ee236fe41e14caeb61cbbdfa625b62f1d3d57480587ceff4fe997

  • memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2964-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2964-3-0x0000000000480000-0x0000000000486000-memory.dmp

    Filesize

    24KB

  • memory/2964-2-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3020-18-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/3020-21-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB