Analysis

  • max time kernel
    175s
  • max time network
    193s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/01/2024, 15:14

General

  • Target

    2024-01-03_4c338ee257669bf8483b08fdc1218fb0_cryptolocker.exe

  • Size

    87KB

  • MD5

    4c338ee257669bf8483b08fdc1218fb0

  • SHA1

    2f1c7410f85dfc1bee015b8e40637a6c9bd8c442

  • SHA256

    748a4fbe8eaad61e35cccd6389e20bbe7503c78231b4473415db239876bd28d6

  • SHA512

    658f572fb47ef50f3e883726e9c0493d4b7dc96b7e35d1bbd224a6dcb8f69981206a948916a41e98436984e9fe775b5a3bf8c9af3cd112c6a0259a02aed656b6

  • SSDEEP

    1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjB:zCsanOtEvwDpjM

Score
7/10
upx

Malware Config

Signatures

  • 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\2024-01-03_4c338ee257669bf8483b08fdc1218fb0_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-03_4c338ee257669bf8483b08fdc1218fb0_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2600
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Executes dropped EXE
      PID:2608

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          87KB

          MD5

          f9b0183584608d852ee4d1210e5d48df

          SHA1

          b124e057b75e2892947b5a2acdd58967829dbe33

          SHA256

          ca9f19615f1e8c4f2d4b5dbb0678f4ab6cb5c2349ea6416032f71694a608813c

          SHA512

          5e65daa32133432903e8d5f13524d92edc635775aa483f8ba8f68f2a8e374d8e9b026752c1b868c500e1e2d1c11b9e3d73c720489b9c6326a93ac55e3f4c2746

        • memory/2600-0-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2600-1-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2600-3-0x0000000000240000-0x0000000000246000-memory.dmp

          Filesize

          24KB

        • memory/2600-2-0x0000000000270000-0x0000000000276000-memory.dmp

          Filesize

          24KB

        • memory/2600-15-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2608-16-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB

        • memory/2608-18-0x0000000000460000-0x0000000000466000-memory.dmp

          Filesize

          24KB

        • memory/2608-20-0x0000000000320000-0x0000000000326000-memory.dmp

          Filesize

          24KB

        • memory/2608-26-0x0000000000500000-0x0000000000510000-memory.dmp

          Filesize

          64KB