Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    12-02-2024 04:37

General

  • Target

    2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe

  • Size

    67KB

  • MD5

    5bb96b1b1c8d29c995dd94e1753a07f2

  • SHA1

    b2e444131b5baab1e5a26176b6ffa6a2568d1375

  • SHA256

    c695885c00ab96157f76e8b4a4a4a36cf03e0e1e53e93e75d431c2e0422fb749

  • SHA512

    5f7b699e4dfd3abadcbdddc2c92a79f9ecbeb065a8a78b5c427eaf4abd9e365ee71175c090f95d3df694e041382aabcfdc9db52cc6b4d748c3727e0da2935728

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj9aYaFAeBt:z6a+CdOOtEvwDpjQ/

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\2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-12_5bb96b1b1c8d29c995dd94e1753a07f2_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2404
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3016

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    95207419ec32478d51622496bbc5c3cc

    SHA1

    f51e0780f187648673618339bd49a768964ce259

    SHA256

    71773b8583245e006588c3dc4d13de64bbb0c023b55afd233d234d681251087c

    SHA512

    437fb5b436912155cdba071e049dc2011963fb9402a8c2a50ac712c8303bbdd68eb8b5810332465f053356fd36a9a911cd1d989d421096408ca6792169472cb5

  • memory/2404-8-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2404-1-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2404-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2404-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2404-13-0x0000000001C80000-0x0000000001C90000-memory.dmp

    Filesize

    64KB

  • memory/2404-26-0x0000000001C80000-0x0000000001C90000-memory.dmp

    Filesize

    64KB

  • memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3016-18-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/3016-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/3016-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB