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Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20240215-en
  • resource tags

    arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
  • submitted
    21/04/2024, 03:59

General

  • Target

    2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe

  • Size

    101KB

  • MD5

    6d99728fdf2b082fba0c1fed976440d7

  • SHA1

    e08f8d5d79cc95b01dbad191a61f9f7835df54aa

  • SHA256

    a1b309982b6963ef940cba438ea9edb936659ff9c380e70682fd9dd4b1707729

  • SHA512

    bebf93f0c130adb8bbefc6e9aebc5a6734c057a7ba80b9a5e3f90b8be277aa9c5896f2beecabbcc85c224021b30cf501a781127d30d5c6f184572b3a7ab1b6d2

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviPeBcP:AnBdOOtEvwDpj6zJ

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\2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-21_6d99728fdf2b082fba0c1fed976440d7_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3020
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3060

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    102KB

    MD5

    3e5082967329d6341c7ae4451170c78c

    SHA1

    24ee1ee5f017c9b5726ab1b5e8dffe72cbde6a43

    SHA256

    e9e5ee142d98ebeb9decd8bdddc3ee781c525cbe130f88e786470a487e2a7fc1

    SHA512

    5ec0ae7f092497833dbfc40cb794b1c9c674d139c8104e65888e5d3342d19024ee25dd30ad2e686daec949cd4d10e9240797b5e0dceaea800d358b49fec55b35

  • memory/3020-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3020-1-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/3020-2-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/3020-3-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/3020-14-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3020-16-0x00000000005B0000-0x00000000005BF000-memory.dmp

    Filesize

    60KB

  • memory/3020-29-0x00000000005B0000-0x00000000005BF000-memory.dmp

    Filesize

    60KB

  • memory/3060-18-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/3060-20-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/3060-19-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/3060-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB