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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/04/2024, 04:35

General

  • Target

    2024-04-09_f128db1ad367c7b53121790f817751f2_cryptolocker.exe

  • Size

    105KB

  • MD5

    f128db1ad367c7b53121790f817751f2

  • SHA1

    72303c3005b850f70d3af45921d4d10c9cb083ee

  • SHA256

    4ef136de3e163df7c74fd15ae813bdd4921ad37a2a828736a181143445ca0f0a

  • SHA512

    7ec69dd24ad13c998891cdc74a14bb43fc1ffe5afb61c25a22569c069a97e4f13977e02859d0cd7861fba051c264271f568a0ba1cd569324ae81bd6e6d290b9d

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GksurJ:1nK6a+qdOOtEvwDpjI

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
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 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 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-04-09_f128db1ad367c7b53121790f817751f2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-09_f128db1ad367c7b53121790f817751f2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4032
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:1824

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    105KB

    MD5

    d237ed102756f6c3bd98a9b6bbdbc952

    SHA1

    9055b2765be582401767c025a93891d673349a5c

    SHA256

    1baf9e2f764cb43c360f2c0b46f84ec19fe175c449bf33ea9db95f49dccbde92

    SHA512

    e9106d1553c2efb3f8364ae47a99429849537b4b84cb0dd28cfd113a964aa6b651f86918422c30d599065408a1d179b079b39fb3b86c03096184fd1af2cf332e

  • memory/1824-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/1824-20-0x0000000000740000-0x0000000000746000-memory.dmp

    Filesize

    24KB

  • memory/1824-21-0x0000000000610000-0x0000000000616000-memory.dmp

    Filesize

    24KB

  • memory/1824-27-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4032-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/4032-1-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/4032-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

    Filesize

    24KB

  • memory/4032-3-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/4032-18-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB