Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    09-05-2024 15:03

General

  • Target

    2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe

  • Size

    40KB

  • MD5

    d9f741b7e058fdb36f39b4cd916b7844

  • SHA1

    4c8bca248f6e133fe418cf13981b64298f471030

  • SHA256

    a6c0ac8eb97cb3dc1d97653736d754b81e0b3e11346ec492c7a9022820c2f1ce

  • SHA512

    61668c6f611ff2487812660a7bce12ebc708d4553d86b15614d97d6577a79c091c27b1196b63c282ee07f20e7a475c1d95cfa791082f270d142a64a0e125343c

  • SSDEEP

    768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKc/j:ba6YcA/Xk3wXFXSqAJcr

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 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\2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-09_d9f741b7e058fdb36f39b4cd916b7844_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Users\Admin\AppData\Local\Temp\hasfj.exe
      "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
      2⤵
      • Executes dropped EXE
      PID:3020

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    41KB

    MD5

    22c056a9c5a0918eb89e2bcae1431b9d

    SHA1

    89a0ea1d891a02ef6de42d2a8207a381513f156e

    SHA256

    5b6a8bac456cd564d6163ca88c06267c8a38e975026981c83a704c44cd4e5f4b

    SHA512

    97a98e8942831c16a7ae86428b159100edc174906ec75492859c46694b2f6f54cb9d494dae9ecab536b21386945118d3bd1ad7d77b900ba7527c647763604972

  • memory/2100-0-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/2100-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/2100-9-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/2100-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/2100-15-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/3020-16-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB

  • memory/3020-25-0x0000000008000000-0x000000000800F000-memory.dmp

    Filesize

    60KB