Analysis

  • max time kernel
    148s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    13-02-2024 00:37

General

  • Target

    2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe

  • Size

    116KB

  • MD5

    97c565f5b0b952f8ee18b025c22b033f

  • SHA1

    87dba8147ceff7dbfc761c245f01fabf0b4d0bad

  • SHA256

    4ef5d8b2a3cbbca0371784f6597302d60953941ff454c96d2b2f569234e014d0

  • SHA512

    fecb69c1a7e3a2f0d0a677c36fbe4afe44f019e7456049b13dc5d5ef116d12f0ce709e362ab16490e7ab77600a7a58cf037a19841faf2f840f678de50fa61c7a

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01pr:z6a+CdOOtEvwDpjczX

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 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\2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:944
    • 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

    116KB

    MD5

    ec44ad785bfd4952dd824ec1f9a5f9c1

    SHA1

    bbd3369531728b1734fec863692ac07841323a5a

    SHA256

    3a8c84e3dcf6dcaeaeeca538f00cdcf8b8bc36ea06f1d2b783c4323eddd2677d

    SHA512

    38b80c771bd1944a9216f70e7f837f4aabaf96ed1557d5ceaa6a72fd9d030616f1cdf2a006cb0e152d04510e4fa15278c0831ed3868d8b5c4f432fe630fe44fa

  • memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/944-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/944-3-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/944-2-0x0000000000520000-0x0000000000526000-memory.dmp

    Filesize

    24KB

  • memory/944-12-0x00000000008B0000-0x00000000008C0000-memory.dmp

    Filesize

    64KB

  • memory/944-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1836-19-0x0000000000600000-0x0000000000606000-memory.dmp

    Filesize

    24KB

  • memory/1836-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1836-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB