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Analysis

  • max time kernel
    42s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06/12/2022, 18:19

General

  • Target

    dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe

  • Size

    55KB

  • MD5

    d347b62257f8b88a1e6939b32cec099b

  • SHA1

    5f0563e7b4eb3291e761b61c2d18f9cd2c60db7a

  • SHA256

    dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1

  • SHA512

    d97456f9ddbf4624bc3527222de398808715b36fe62a9f416929f67f5bedf0e95ed6948b8f81ec782137219410c39cdf0c989cb0864eed741cba4294b98a7a6f

  • SSDEEP

    1536:V3cpyORJLuB4P4AJJv4Romu/xtKGR8QzG852ncgt:V3c1fP4AJJv45GfbG8kb

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Drops desktop.ini file(s) 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 9 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe
    "C:\Users\Admin\AppData\Local\Temp\dac51f2d794fa9db69d90912e620a1c827e0e53c86fad6329b0390ec7c7cc0d1.exe"
    1⤵
    • Modifies visibility of file extensions in Explorer
    • Loads dropped DLL
    • Drops desktop.ini file(s)
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1824
    • C:\Windows\SysWOW64\attrib.exe
      "C:\Windows\System32\attrib.exe" "C:\Program Files (x86)\Microsoft1\Internat Explorer" +s
      2⤵
      • Drops file in Program Files directory
      • Views/modifies file attributes
      PID:1872
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat" "
      2⤵
      • Deletes itself
      PID:636

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\temp_tmp.bat

    Filesize

    250B

    MD5

    ebe109caf9c0174fdd01eb071ca8b758

    SHA1

    66bba34ab14ce77f44115c1b9ad730bc39a156a6

    SHA256

    e4d283d0008531dcde84a748944ca7f5434560fa925b8eee639da0b7bb44acb5

    SHA512

    20a5a65823cc473bc262749368851a4bf6a1bee4eab7a9a12a54bf08f60d4fcfdb07b1906dce810d1e71b157ee15c8de8fda5d9a5938111f0e29e5eabce95e8c

  • \Users\Admin\AppData\Local\Temp\nsi560.tmp\System.dll

    Filesize

    11KB

    MD5

    00a0194c20ee912257df53bfe258ee4a

    SHA1

    d7b4e319bc5119024690dc8230b9cc919b1b86b2

    SHA256

    dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

    SHA512

    3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

  • memory/1824-54-0x0000000075571000-0x0000000075573000-memory.dmp

    Filesize

    8KB