Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    10/06/2024, 04:39

General

  • Target

    2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe

  • Size

    39KB

  • MD5

    19c3eb939ebe5587e12f5429b99fd4b8

  • SHA1

    f1b099aa45769c7cdb3d6fc24e6170a6638f22b0

  • SHA256

    7a46913b08a642afb020f454221cc373ec69e2d01bf0277f4741a785b3f7748f

  • SHA512

    c1703d9186f4d2bb35fc717f4880ca15c19d85cfb0a3d9d713c934c5dbecb45a42b212fc40c975beb08bc1ac1e579d2040cc1b9d038b99dae946491539e04559

  • SSDEEP

    384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSzn1KkZCb9q8IujdxNX6vL:b/yC4GyNM01GuQMNXw2PSj1Pqq8BC

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1340
    • C:\Users\Admin\AppData\Local\Temp\retln.exe
      "C:\Users\Admin\AppData\Local\Temp\retln.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of UnmapMainImage
      PID:2552

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          39KB

          MD5

          f98a52514e9b516189538c7c20d99e18

          SHA1

          8b0c89bade776f64c05845e917bc911ab316514c

          SHA256

          6712790403b2981a9b66f0e9fbad8903ef90d18c8e27d3a1a0eb3ff6fac020d1

          SHA512

          616fef4fe7118d7b0e529e4cc3ec4b24ae0e3372aa224576171d5a4641a7f5fabf4a8165bd6b58b99320d551f277a22cfb3c3581452128483d31b510480c2448

        • memory/1340-8-0x0000000000370000-0x0000000000376000-memory.dmp

          Filesize

          24KB

        • memory/1340-1-0x0000000000400000-0x0000000000406000-memory.dmp

          Filesize

          24KB

        • memory/1340-0-0x0000000000370000-0x0000000000376000-memory.dmp

          Filesize

          24KB

        • memory/2552-23-0x0000000000280000-0x0000000000286000-memory.dmp

          Filesize

          24KB