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Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240419-en
  • resource tags

    arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
  • submitted
    30/04/2024, 19:23

General

  • Target

    2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe

  • Size

    65KB

  • MD5

    2ca11d635f336f4867e155023096a05b

  • SHA1

    549c4ee6caf2c012894e14dc3f6f0d28b46eda5f

  • SHA256

    a120b2b4757a6659cfd17d9eae9dced911ab1fc92a7f94a72e48adbe81ba0582

  • SHA512

    ee934074ff2761816d308ddd6fae7d82ad43986376fa2048bf7fe6bc8d512743953e5ae51738b2960f3ce61e8e422f200f990ac66772c0ff82d0aa786ea795c6

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDy6:1nK6a+qdOOtEvwDpj1

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 4 IoCs
  • Detection of Cryptolocker Samples 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\2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-30_2ca11d635f336f4867e155023096a05b_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1180
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1836

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    508591193aa2246902dafc1c4a2f0e5d

    SHA1

    675204b510a5b49d17abc99b11dc38e96e3fcc76

    SHA256

    5aed5cc1744db6a97c79f37e8d5b75dbaaa190d8e13e67ef078c017a2d8b5c09

    SHA512

    674c69388448c7be4c75e28150ffeea26363283e7c4c1f6eb19c6af9fa9d8d2b9b4258bda741869f546e12bb69f3c1d33b1d6bc49533564cb6cd77308af86ba2

  • memory/1180-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1180-3-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1180-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1180-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1180-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1180-15-0x00000000023A0000-0x00000000023B0000-memory.dmp

    Filesize

    64KB

  • memory/1836-25-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1836-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/1836-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB