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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
    20/03/2024, 00:42

General

  • Target

    2024-03-20_72007eec410507248db359d818a6929a_cryptolocker.exe

  • Size

    57KB

  • MD5

    72007eec410507248db359d818a6929a

  • SHA1

    aa934f15bc6298cbc34d79761e1be9918e20cb10

  • SHA256

    f0c00d222d8add24eb4e65f7da97f6326ca7df1a17e93a291d182c0344cee41c

  • SHA512

    7fc0fd2d48c8fb8553912fe7c136f76ad70fd6abedd6349c09aaf1437c5bbcaa54c25678cc008d14258bbdc8e8aa3f66a06bcd30bf0fee629233cf746bbe8744

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5axcE9Gz:z6QFElP6n+gKmddpMOtEvwDpj9aYa59a

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\2024-03-20_72007eec410507248db359d818a6929a_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-20_72007eec410507248db359d818a6929a_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2840

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    57KB

    MD5

    97b45cfbf3349c0e47cfe55d920eb90e

    SHA1

    0b25bc98275979503cd92dbfd47e0d6b64b35cc7

    SHA256

    53e61ecb375790f8acfdff9f61497184b34ae832b9a693fc8f0caea8155edce3

    SHA512

    510426ba79a3e81762c6b37490f442f2fe8289df7979027ddfb9c8b75ef77434d337a7ebac967d319882a69446b8552920aa0e3c8447759f48afb6e0154a0405

  • memory/1660-1-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1660-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1660-2-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/1660-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/1660-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2840-18-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2840-19-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2840-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2840-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB