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
    23-04-2024 03:31

General

  • Target

    2024-04-23_36453e8cab90219e8427953e3f594452_cryptolocker.exe

  • Size

    128KB

  • MD5

    36453e8cab90219e8427953e3f594452

  • SHA1

    640f18e2a133dd0e1eaa4cff24ee7e87330a64f1

  • SHA256

    dab41a09e41d9526787bb56910ffcff3cbd8d2cef64ba000914fd4f244a66617

  • SHA512

    fb58ad36df738a68c1ef661da59951f086861563fc546df7bf111a6a04cb9da8de8cb7236ddb74da022d2e06c2dc67fa740ec94a5d46d2dcc1911678c19c828d

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgp699GNtL1ebHkw:AnBdOOtEvwDpj6zt

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 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\2024-04-23_36453e8cab90219e8427953e3f594452_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-23_36453e8cab90219e8427953e3f594452_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2772
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2932

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    129KB

    MD5

    e057bec1e43efdc0e21724b19fd3a4da

    SHA1

    cd5c2b60b69150eac51c55300b490249418b0a90

    SHA256

    e2a7205afd67b1eed57f90b1fe68739334038c79f3a86e2cc97b43ff20c624ee

    SHA512

    b3cd270d7d369d3f393f2a9a685dde2c6e0546720d90fc4c524b83813bd5907d38108d1369f349ce6a06d6294df9c026249a8e2d4bc70ab42b608714907d9ded

  • memory/2772-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2772-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2772-2-0x0000000000290000-0x0000000000296000-memory.dmp

    Filesize

    24KB

  • memory/2772-4-0x00000000001D0000-0x00000000001D6000-memory.dmp

    Filesize

    24KB

  • memory/2772-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2772-13-0x0000000001EA0000-0x0000000001EAF000-memory.dmp

    Filesize

    60KB

  • memory/2932-17-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2932-19-0x0000000000460000-0x0000000000466000-memory.dmp

    Filesize

    24KB

  • memory/2932-21-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2932-27-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB