Analysis

  • max time kernel
    148s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11/06/2024, 01:15

General

  • Target

    2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe

  • Size

    37KB

  • MD5

    b408293ae4f662d45be20e4c9b16a66c

  • SHA1

    9241d8c10cddb2f196c05475b230730ecc6ddb50

  • SHA256

    325d5d71d46e770dc4a7f29385707e8639899ec2c141165f2bc2a92f948e0b6e

  • SHA512

    3cfc73efae48022fc71250d4c302c45e62bc2e807a7f15f79f94b6125d0ada62e4805a135c0daa78a59ad513041ffbfa1e516c54a64dae12df1bcf7cf6ad394d

  • SSDEEP

    768:qU6yu4M3Eu2smnbcuyD7U9dtOOtEvwDpjeMLa5zZyR/Ad10:qUZbMb2pnouy8TMOtEvwDpjja7yRr

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 3 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\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-11_b408293ae4f662d45be20e4c9b16a66c_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4576
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:400

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

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

          Filesize

          38KB

          MD5

          b71e30ee47624a6b12bf395af03d480c

          SHA1

          3b5ff85d6dcb6e9a09d05ceda68561477693677c

          SHA256

          45eabb473c1dfd56b8c02bd60177d475cd403d5d63e8dff9dd2794abc9bb94ad

          SHA512

          a91a2d088e308fa538c27d764f7b2cabf8389912ac468b31bd7c1025c99dec3d01b5362f29a167dbf637740badc7b60b05d81b444977b4f3277367a771cde4d8

        • memory/400-18-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/400-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

          Filesize

          24KB

        • memory/400-26-0x00000000005B0000-0x00000000005B6000-memory.dmp

          Filesize

          24KB

        • memory/400-27-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4576-0-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB

        • memory/4576-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4576-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

          Filesize

          24KB

        • memory/4576-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

          Filesize

          24KB

        • memory/4576-17-0x0000000000500000-0x000000000050F000-memory.dmp

          Filesize

          60KB