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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
    02/02/2024, 02:40

General

  • Target

    2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe

  • Size

    55KB

  • MD5

    db38518b258229325782b2050162ab76

  • SHA1

    a2eef1e98fca6139a059c5bf3c865aff47601ea3

  • SHA256

    3a0808cc4350d94bf2f8be14ec4639ea64635af171ec650e6839fceb44780085

  • SHA512

    8cf20066d390c493c10d30b65924c31ae090991ee0d47bb7cca29257db5800e9af8b8f5baa03513b766a6b0f8f834ed389db51204d1db5f4ed8ca6d203d84c49

  • SSDEEP

    768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax84uf:z6QFElP6n+gKmddpMOtEvwDpj9aYaO

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\2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-02_db38518b258229325782b2050162ab76_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2184
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1852

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    55KB

    MD5

    2852ba609d42df29d5601f9071dd13fe

    SHA1

    4c9490e28f2f7201b4e10996d6008071fe9a1ee5

    SHA256

    42d2a9d3c1463ae1f7ac21b7b2124ab370a904b487dc9d9e872de73f867d6733

    SHA512

    bb6e5adfd85632209591bd79bd2f066db4bbaca58e9ab38cb6970cf665d34b661afd359436a76f8633921f0fded381fa9a021994ba2ed16c0866c4b7644e8b11

  • memory/1852-18-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/1852-20-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/1852-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1852-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2184-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2184-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2184-3-0x00000000002B0000-0x00000000002B6000-memory.dmp

    Filesize

    24KB

  • memory/2184-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2184-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB