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Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/05/2024, 15:44

General

  • Target

    2024-05-28_e8f449e58be3b56429fb7aa80a56a2a2_cryptolocker.exe

  • Size

    38KB

  • MD5

    e8f449e58be3b56429fb7aa80a56a2a2

  • SHA1

    07cd1acbeecd2f109cd8c86a5d03258db7b865d0

  • SHA256

    33b5af081e460ef2f61b810dc7eab8dd716d414a4b7916ec30d02b11cdf13860

  • SHA512

    c4cc29471aa60579da6065c2799537d3a4e40d46756bff1d7e8cc838c97e63a2f5d3648eb1168a59a60f680e8730754b4a407c135c9e9dc0b8df41c89a85d255

  • SSDEEP

    768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mrD:bc/y2lLRU6zA6q/

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-28_e8f449e58be3b56429fb7aa80a56a2a2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-28_e8f449e58be3b56429fb7aa80a56a2a2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Users\Admin\AppData\Local\Temp\rewok.exe
      "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2524

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    38KB

    MD5

    99bee5667f853b3e165c519ae62d07e5

    SHA1

    eb5a4b45c67f41743f00b4b8e50f74288ebfcf32

    SHA256

    162bd83750d10eee3d92f3acf0c297c81ef26c48bc97c5447df80f31834b4ff4

    SHA512

    873154a5a4be4e37b104d435e1b466f910241e53508b926fdb3103ec7ccb1161bac4ac3dcf39ca425a960e1dfa02e50c171ad0e2177d3b3546a3a57a9c5de36f

  • memory/1908-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/1908-1-0x0000000000400000-0x0000000000406000-memory.dmp

    Filesize

    24KB

  • memory/1908-8-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2524-23-0x0000000000410000-0x0000000000416000-memory.dmp

    Filesize

    24KB