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Analysis

  • max time kernel
    147s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11/05/2024, 16:44

General

  • Target

    2024-05-11_0ee3258f1a686bbe6aebafaccaa72fbd_cryptolocker.exe

  • Size

    65KB

  • MD5

    0ee3258f1a686bbe6aebafaccaa72fbd

  • SHA1

    5b77bdbc47b539cf70f84295b0ab83152adc6c77

  • SHA256

    e74f2e1169ff970739ab96b2e22b5a5fb1422a94cee07cdea19ce96486a26ad8

  • SHA512

    0fb1dc90b252cfca2fd67990f6bbb0adfafd0968bc38567552e74568a22080e2e1b59a07820eb1c2c17516c6eb49d2cbe0c103435fc555c047329d1232666bdf

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjY6UAXXC:1nK6a+qdOOtEvwDpjS

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\2024-05-11_0ee3258f1a686bbe6aebafaccaa72fbd_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-11_0ee3258f1a686bbe6aebafaccaa72fbd_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2852
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2380

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    65KB

    MD5

    0a1f82d9d0a856c82395664b3327491f

    SHA1

    541600891a6d9d5fac3eee2c73f6f3169db808be

    SHA256

    9c57a09b33d4f7d2765d1900dc957f68b8fbf327ed96087aa53e4f52a1fe7029

    SHA512

    88e70ddd0350996874267a15ebc931d790466aa7d3d5dce07ce2e2951c3086735566c1c2d53e075dff91d6901a4192f4dbb0329cf9297da358b9b5dbacb8647a

  • memory/2380-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2380-25-0x0000000077820000-0x00000000779C9000-memory.dmp

    Filesize

    1.7MB

  • memory/2380-18-0x00000000002D0000-0x00000000002D6000-memory.dmp

    Filesize

    24KB

  • memory/2852-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2852-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2852-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/2852-9-0x0000000077820000-0x00000000779C9000-memory.dmp

    Filesize

    1.7MB

  • memory/2852-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

    Filesize

    64KB

  • memory/2852-16-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB