Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    25/05/2024, 21:26

General

  • Target

    2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe

  • Size

    90KB

  • MD5

    50e4fe3073a1156b8721903c0663321f

  • SHA1

    47435cc78ca641f17687f96a13484e003836eb0f

  • SHA256

    451a95132d7da7aa3529276572a09d75af538bd21f30070d4f7dbd0a71e1f61b

  • SHA512

    a544451d7e2eaf6260a3e21164360b5e66be244d531448c9abff742680353e38fa52e0359d56257eadb31fd26651b8b5f960c81c9d95aa0fe4abf047c55ac1a2

  • SSDEEP

    1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyT:n6a+1SEOtEvwDpjYYvQd2PO

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\2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_50e4fe3073a1156b8721903c0663321f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1972
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2212

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    90KB

    MD5

    25384d6f4884a2d9548ebf70d04ad73f

    SHA1

    52364833ba6de6694a26308e5adafd8d9c2ded7c

    SHA256

    f3f727190ec4e0eb7e8fb57632c876af948da13cf72e5acac8d25d0fe4278d5e

    SHA512

    c1e9272352f0847baeadfc4f2b549f81a785c93006b178bad938f1e1590fc6f9c97a57de72b50b8cdbba01d2c89e49d47f721b9eacfdd766208be3397d2bb293

  • memory/1972-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1972-1-0x00000000001C0000-0x00000000001C6000-memory.dmp

    Filesize

    24KB

  • memory/1972-2-0x00000000001C0000-0x00000000001C6000-memory.dmp

    Filesize

    24KB

  • memory/1972-3-0x00000000003F0000-0x00000000003F6000-memory.dmp

    Filesize

    24KB

  • memory/1972-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2212-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2212-18-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/2212-19-0x0000000000380000-0x0000000000386000-memory.dmp

    Filesize

    24KB

  • memory/2212-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB