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Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    27/04/2024, 21:27

General

  • Target

    2024-04-27_b1b9fa34deca2f0918c07e8988df8675_cryptolocker.exe

  • Size

    79KB

  • MD5

    b1b9fa34deca2f0918c07e8988df8675

  • SHA1

    1b230dc2ae8f531e95f76797f72a2680cb5d80f6

  • SHA256

    354c7883c36c383933863ea7d7e5cc1042e4674ea40d9b9f38b993623d044fcc

  • SHA512

    b66bb28ed3d3d493e6911f86002ec3559775f755b498aeaeed0cb6ffd55890df0086f089fe059756aacbc0602900af12aba8f989fb1cbdbae92e7ddb787e9d87

  • SSDEEP

    1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOA+YSafiPuqd8:T6a+rdOOtEvwDpjNcF

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\2024-04-27_b1b9fa34deca2f0918c07e8988df8675_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-04-27_b1b9fa34deca2f0918c07e8988df8675_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1656
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    79KB

    MD5

    4ea20028393120ad0e2632b0d7400ac7

    SHA1

    8c45cd2eaa74590c91a8cf76a08f90cbcf66e210

    SHA256

    59226448fee9c9f3b5be8608c1bf0daf25eea68f86a1686ce0aa7f2fbb20aefa

    SHA512

    737e07ad2f0f31cb9c4f777ca5a04997c7d9c5f2403c6d19d6c632f734c237618bddea512d52a335162971fbe28c20cf99c341b338a1a5a2f1bc77ed3b756783

  • memory/1656-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1656-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1656-9-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/1656-2-0x0000000000270000-0x0000000000276000-memory.dmp

    Filesize

    24KB

  • memory/1656-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2548-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2548-18-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/2548-25-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB