Analysis

  • max time kernel
    149s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10/06/2024, 21:43

General

  • Target

    2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe

  • Size

    91KB

  • MD5

    f23d3106fdd4e6193c79d4b333731016

  • SHA1

    c4ab05f9b832711597a0cc54c91f851705372ee1

  • SHA256

    8b457ca6057494896c71260c426a73e4413867c0d63c11cb68d38b2da649698a

  • SHA512

    0b0fe4457dd922ef3ce199e334856b7bba84f7326bf98ff07b550061c3bd86a9408dcd12c82607ae5a5e8b6c03ff3ff6dc0f21dcf744a8af3924032842220ef1

  • SSDEEP

    1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAyuF8:n6a+1SEOtEvwDpjYYvQd2PW

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\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_f23d3106fdd4e6193c79d4b333731016_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3020

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          91KB

          MD5

          9e884791485b563d4e5d2c7a9050e57f

          SHA1

          67cc987d9b0f16503d94f0c5ed61457df793bb90

          SHA256

          4db7708147ee9692141e86bd09d21f946ff1e28fec57f35545bbf8cb0e702b09

          SHA512

          3a5e781af38af3ef5da1444990ff18188604a887c457b49402eaece459bb02343e1142159635fb233e9348b63c3ad6c5cb72ba03da551dddad03dd6c54ddac65

        • memory/2244-0-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2244-1-0x0000000000420000-0x0000000000426000-memory.dmp

          Filesize

          24KB

        • memory/2244-8-0x0000000000420000-0x0000000000426000-memory.dmp

          Filesize

          24KB

        • memory/2244-2-0x0000000000450000-0x0000000000456000-memory.dmp

          Filesize

          24KB

        • memory/2244-16-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2244-14-0x00000000009A0000-0x00000000009B0000-memory.dmp

          Filesize

          64KB

        • memory/3020-17-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/3020-19-0x0000000000330000-0x0000000000336000-memory.dmp

          Filesize

          24KB

        • memory/3020-20-0x0000000000360000-0x0000000000366000-memory.dmp

          Filesize

          24KB

        • memory/3020-27-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB