Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240426-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-05-2024 23:36

General

  • Target

    2024-05-29_f0ed71de75ee953dd596a7a84e058d12_cryptolocker.exe

  • Size

    40KB

  • MD5

    f0ed71de75ee953dd596a7a84e058d12

  • SHA1

    1ec212cfeb51155da5e12bf9c814e3c025e6e511

  • SHA256

    f2089b753f74a262c5f6ba508524c75e06433e14f40f1694b3ad8a1ab2ce2965

  • SHA512

    7b86e59ee4a5d0f79a0ce2af224a81ba9cb9ed747706148703ac06a8a215d374edf1ffebd3833c737280aaf5f31daef650603ce71a35030226506a8f8296e456

  • SSDEEP

    768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITY/0o:qDdFJy3QMOtEvwDpjjWMl7TE

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\2024-05-29_f0ed71de75ee953dd596a7a84e058d12_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-29_f0ed71de75ee953dd596a7a84e058d12_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3504
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:4724

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    40KB

    MD5

    7f16c4538f5ff64db3548e3719954577

    SHA1

    e43480f33b9343508de6bae1d925644328d0f592

    SHA256

    c6b4610bc168ec993de3b6d030b5c87a798966a54515b2e54b3c06d6742859ad

    SHA512

    fcc8b312efb8e7ecaa8017f7845ea0ec73a144bd5cb9bb93cc02c4bdb4e5c35c71e02968c1e2105d688a90f95ae83deddc5bbedd7098f7b835089830a0150b7a

  • memory/3504-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/3504-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3504-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

    Filesize

    24KB

  • memory/3504-3-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/3504-19-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4724-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/4724-27-0x00000000005A0000-0x00000000005A6000-memory.dmp

    Filesize

    24KB

  • memory/4724-21-0x00000000005D0000-0x00000000005D6000-memory.dmp

    Filesize

    24KB

  • memory/4724-28-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB