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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    28/02/2024, 06:39

General

  • Target

    2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe

  • Size

    102KB

  • MD5

    a86b58c09be4602ef473448e023bc14f

  • SHA1

    b6252bcca789422e827b8afa735d23d3ad8b7def

  • SHA256

    6178ddb132f7c7962304a445969dad28d74f2e11ac166133e4206343fd7fcb9e

  • SHA512

    1068b3dc3515d7808db1af940ff2f25652651f9423299e2df20f83c1f5163e80916560680b5655dbb0db652e5266cd9fd9778e7871aeefd7f56ea870c8a1ef2a

  • SSDEEP

    1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviy6r:AnBdOOtEvwDpj6z3

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
  • 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\2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-02-28_a86b58c09be4602ef473448e023bc14f_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1204
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2960

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    102KB

    MD5

    3fe42544b2427884e6e427be20cb2b5a

    SHA1

    58ceea1a25a42b1fd9466999bef10207b51e043c

    SHA256

    92a59496d627c158c4b4c0bdae9355611c165e95c5f9b5a28b084372cda6c5d0

    SHA512

    3ec795cebc80a959c43cb5af178abedf439619179aa981f2944005dc2d21bfb4aedb7bf989dc6eabd66201d54eb279ec50430a275705b03505e228b806a50d35

  • memory/1204-0-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/1204-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1204-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/1204-4-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1204-15-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2960-16-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB

  • memory/2960-19-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/2960-18-0x0000000000360000-0x0000000000366000-memory.dmp

    Filesize

    24KB

  • memory/2960-26-0x0000000000500000-0x000000000050F000-memory.dmp

    Filesize

    60KB