Analysis

  • max time kernel
    148s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    28/01/2024, 19:30

General

  • Target

    2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe

  • Size

    63KB

  • MD5

    8cb96f18b27e598ac570cfcb0f9c53f4

  • SHA1

    efd1676f37195cf21702a9e0720324ea4901c67b

  • SHA256

    447b5085cd021434f14a0792f9cbfe3332feaf941a0f7b8c5faaded97f165d10

  • SHA512

    dd20bb448348737dc005b1027647c3b179ce44693b4d96c0362efc6d15eb308eb36a464c4c481032ada34e138967656b49b5f947261deb2d9536072ad8492e09

  • SSDEEP

    1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoe:1nK6a+qdOOtEvwDpjM

Score
9/10
upx

Malware Config

Signatures

  • Detection of CryptoLocker Variants 6 IoCs
  • Detection of Cryptolocker Samples 6 IoCs
  • UPX dump on OEP (original entry point) 6 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • UPX packed file 6 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\2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-28_8cb96f18b27e598ac570cfcb0f9c53f4_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2372
    • C:\Users\Admin\AppData\Local\Temp\asih.exe
      "C:\Users\Admin\AppData\Local\Temp\asih.exe"
      2⤵
      • Executes dropped EXE
      PID:3052

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    63KB

    MD5

    f23d439987759c10a200e68898722b4b

    SHA1

    95b01bbb3849b5af51108f464312b434b0ec9926

    SHA256

    295b16fe8718893c27cedef4cdf6c1b0ea8f482176832739d9633a030d05a882

    SHA512

    c085d8ad243f6f1fde823aefa77bce5627f126c18b5b3d7864585a278d68b9d5996ad348d94d39c3c6afc26f5e4404cacb10c744350d4bbd7e33f5302f82f8b4

  • memory/2372-0-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2372-1-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2372-2-0x0000000000280000-0x0000000000286000-memory.dmp

    Filesize

    24KB

  • memory/2372-8-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2372-15-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/2372-13-0x0000000002270000-0x0000000002280000-memory.dmp

    Filesize

    64KB

  • memory/3052-17-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB

  • memory/3052-19-0x0000000000370000-0x0000000000376000-memory.dmp

    Filesize

    24KB

  • memory/3052-26-0x0000000000500000-0x000000000050F311-memory.dmp

    Filesize

    60KB