Analysis

  • max time kernel
    133s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28-04-2024 14:23

General

  • Target

    2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe

  • Size

    76KB

  • MD5

    059593ed6dc6d1f598d6391f47fb327b

  • SHA1

    a24204f4039311ab81d7efac05cc6d81c3170a40

  • SHA256

    06dea97ed9e1711c1745b2191e9f6ee0b651441cc82110aafd32bd60736af6fa

  • SHA512

    ee99ac9bd907cade624b616dfea1921170c81c6c954611366fca57b1ba8e9164098f83a71087b04a6761cf05d6dd481e24d5b1f1bddc250f1fb479944a1dbe44

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUx5:T6a+rdOOtEvwDpjNtHP6

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\2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-28_059593ed6dc6d1f598d6391f47fb327b_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2344

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    77KB

    MD5

    711a79931d4f2ef3b23a8c8b4e5f3c91

    SHA1

    cb07e9e218d7247f9ba624d88116211a0649aa61

    SHA256

    efce3a3c967d59285b9c1f5d99fd802414173db6805b27191e9c71dcb917bed9

    SHA512

    9cc648453041eb71587bb4b5da3a3edcaf0bf27065a2294d189438a06a62e458427377a849d4e8e1966c476800a21e21f7438ba5445597ac1e6b668d68018ff0

  • memory/2240-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2240-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2240-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2240-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2240-14-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2344-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2344-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

    Filesize

    24KB

  • memory/2344-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB