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Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    25/03/2024, 12:26

General

  • Target

    2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe

  • Size

    118KB

  • MD5

    1433989e8e4e108ec4c181c4c679ed59

  • SHA1

    b4a58629b709eca71dc3595be526df919951a1ca

  • SHA256

    489cad4cc47271135162208780dcf68391af102c27aded24bdd4de5ac3c334a4

  • SHA512

    bbe1bf0be36d4d717f347a9fede9baa79fba2f6d87bc1b5f0d740ed43cb6dc9787209a31a57b80a3af2476f7fe59a3be470e7797139a52c3cfc344cb057e9421

  • SSDEEP

    1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01Qatb:z6a+CdOOtEvwDpjczT

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\2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-25_1433989e8e4e108ec4c181c4c679ed59_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2744
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:2904

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    118KB

    MD5

    de68ec66669008f459d979daa1b12745

    SHA1

    c375c3873b365cc03d364f395d278c9ac1987981

    SHA256

    131c0f37de246269084057cd71fd2c4954cbe62f95a06d61b3222f573501b79a

    SHA512

    2e100d809db3ba3f2c160e93f7d118fe03135d507c9ce5670ad22c1882a4c66382c447f3ab80846fdd4eb9a7992a219252d71bbed533e127809ce39b2b0ee554

  • memory/2744-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2744-1-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2744-3-0x0000000000450000-0x0000000000456000-memory.dmp

    Filesize

    24KB

  • memory/2744-2-0x0000000000420000-0x0000000000426000-memory.dmp

    Filesize

    24KB

  • memory/2744-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2904-16-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2904-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

    Filesize

    24KB

  • memory/2904-19-0x00000000003C0000-0x00000000003C6000-memory.dmp

    Filesize

    24KB

  • memory/2904-26-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB