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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/04/2024, 05:14

General

  • Target

    2024-04-27_cedd4166f731ba98f69e48cf14477fa1_cryptolocker.exe

  • Size

    60KB

  • MD5

    cedd4166f731ba98f69e48cf14477fa1

  • SHA1

    331fd4d37296dd86ce502b4cd50cd04d275b4f7e

  • SHA256

    9c0e2f17469c885c99d41ce5cad875133f439e8605b6595fe2a4ed2c4442c98f

  • SHA512

    0f3c16b00e12ea9e1f484747d3d635348388ecb8df25e4b77e7c7d21055e7f75d1507aea7e7eacc5c2097425c10ffc2000648e2b0da3d4ff925bc86418c6ed2f

  • SSDEEP

    1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbtCK:V6a+pOtEvwDpjv0

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-27_cedd4166f731ba98f69e48cf14477fa1_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-27_cedd4166f731ba98f69e48cf14477fa1_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4548
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2288

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    60KB

    MD5

    01be41e9fce7837440cf5432b6a0ccac

    SHA1

    76a1ecfe4ad19de527276e1b201443427361ce35

    SHA256

    d0e6bc553e1357b3d94614aa1615ebcdbbd9cf182a0acf45a8ca12a6c6c6a31f

    SHA512

    d6b6a70d7773ce0b764a9f7069e94e8b2a035c8b4ad64b04551ce0c8ccefc802cd6f9d6ee5a690123d4f8f9616d98966bb3aa3d669c980a7e6ab20cf8e9704f2

  • memory/2288-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

    Filesize

    24KB

  • memory/2288-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

    Filesize

    24KB

  • memory/4548-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB

  • memory/4548-1-0x00000000007E0000-0x00000000007E6000-memory.dmp

    Filesize

    24KB

  • memory/4548-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

    Filesize

    24KB