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Analysis

  • max time kernel
    155s
  • max time network
    165s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    06/03/2024, 13:44

General

  • Target

    2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe

  • Size

    80KB

  • MD5

    be781e47ba551a56e25f87c1859f0345

  • SHA1

    5edae0dda6a199e2f35c6325b8d87f778c3ee04f

  • SHA256

    60e286a686857db4406a9b4ff356fefe6a074942b7ca4a670bda7e7cd92f70d5

  • SHA512

    cbdbd2f57663fd1aa4c1976c84730c2a91e4da9f92043c100300368d30ec77581d874a590b4b54ef7bb6a538fbfc6289724b79ff55d831d62cf97a239fdd2f5c

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyTghK:zCsanOtEvwDpjc

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\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-06_be781e47ba551a56e25f87c1859f0345_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:392
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2640

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    80KB

    MD5

    88f9b45324dedbcef5ccb066760e72bf

    SHA1

    0c7d18e66ea4c726a8394d050c8632592c5659dc

    SHA256

    ec38e49db749d13261425daa10b01761761528f4bcf67340eac62a0b43ddc7d1

    SHA512

    361ae0caafbdb63e1b6d4b0b154e5af090498e6fa5edb56feb53379a7819155e8263c9c64687cc9d81a1b7c55a610d3819c773e43bf0c3560362a2047ec3c598

  • memory/392-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/392-1-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/392-3-0x0000000000330000-0x0000000000336000-memory.dmp

    Filesize

    24KB

  • memory/392-2-0x0000000000300000-0x0000000000306000-memory.dmp

    Filesize

    24KB

  • memory/392-15-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/392-13-0x0000000000680000-0x0000000000690000-memory.dmp

    Filesize

    64KB

  • memory/2640-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/2640-19-0x00000000002F0000-0x00000000002F6000-memory.dmp

    Filesize

    24KB

  • memory/2640-23-0x0000000000240000-0x0000000000246000-memory.dmp

    Filesize

    24KB

  • memory/2640-27-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB