Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-05-2024 17:24

General

  • Target

    2024-05-20_2075330ce1ab5a42bfbe98d25452c373_cryptolocker.exe

  • Size

    64KB

  • MD5

    2075330ce1ab5a42bfbe98d25452c373

  • SHA1

    357e8ef9e67b0e56006f6a5e523cce0b4038fa5e

  • SHA256

    435b4c4b55696e78cb4d18538c17d5845b5ea3e209160219cbfd68a2a4a53bf2

  • SHA512

    9958ab734ebd9e9d20eb994a66726d1184679aaa34a48c0171e10075b0e8c71786b8696c8a8b61fdf591cada10cd098e4a97297c29d99b72718d8f3910ee4c9c

  • SSDEEP

    1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiq:BbdDmjr+OtEvwDpjM8X

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 4 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
  • 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\2024-05-20_2075330ce1ab5a42bfbe98d25452c373_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-20_2075330ce1ab5a42bfbe98d25452c373_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2968
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4192

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    64KB

    MD5

    be395ab5acfcb2b126d9cba80258c513

    SHA1

    d6771f7bbeeb50b66f288a67e00d2cf8b8674e86

    SHA256

    651c3e43407056c980f346d5681fbcebc9a3a3d225858b9df7526900c3f2777b

    SHA512

    f7a43b7dc1b674bd66fcb8337fd49bde0ffcfcba59cc9d393d0c605f7cf14ce4f85c4fbd4921776c779f12fc87883525d544e8e3a030f3c1e4f940b5b1a1edfe

  • memory/2968-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2968-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2968-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

    Filesize

    24KB

  • memory/2968-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

    Filesize

    24KB

  • memory/2968-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4192-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4192-21-0x0000000000660000-0x0000000000666000-memory.dmp

    Filesize

    24KB

  • memory/4192-22-0x00000000006D0000-0x00000000006D6000-memory.dmp

    Filesize

    24KB

  • memory/4192-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB