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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/05/2024, 06:38

General

  • Target

    2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe

  • Size

    66KB

  • MD5

    7a0a67346a3145b756e1248ce39722c6

  • SHA1

    70ce2b0a6ca51b135581ad79e9b53323b61b22d3

  • SHA256

    e4d26b2ab01b98e470f0c07694e6ff034980b0f5b63844e240b773aaca3d0110

  • SHA512

    b2b556e54f94472573eb7e22ed7d99de8d7730f259da0507a842d12f6da42e94e0d6ca6fcf419a91ecf36158f1e974b02da1e1887a20acf621edb1979617f848

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDyfz:1nK6a+qdOOtEvwDpjg

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_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-25_7a0a67346a3145b756e1248ce39722c6_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3016
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1612

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    67KB

    MD5

    d3d42068dbe3245b0f62faadefc7da85

    SHA1

    1784e751c67363b8030a84c6f9708b18d33001f1

    SHA256

    ffd3cf0c332b4ff940306a3f2953672c582b8fdf1d0a4c50b6b51e7574deb1c2

    SHA512

    c7c9c4d12798c328cba54bee1baba3ee53af025a76ade96d8b9399f4c7b01179c7f38a437375fd82b6efce2fc03ef6ad3047ed7c18f0cb3b9fbf0dc53d5988be

  • memory/1612-18-0x0000000000340000-0x0000000000346000-memory.dmp

    Filesize

    24KB

  • memory/1612-25-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/1612-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1612-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/3016-1-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/3016-0-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/3016-9-0x0000000000230000-0x0000000000236000-memory.dmp

    Filesize

    24KB

  • memory/3016-2-0x0000000000260000-0x0000000000266000-memory.dmp

    Filesize

    24KB

  • memory/3016-14-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB