Analysis

  • max time kernel
    156s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/12/2022, 10:29

General

  • Target

    cff77c18e5dd0cfe49be2a540ce0136941f44444b333825551e65f370e09b3ab.exe

  • Size

    413KB

  • MD5

    5f5b7b5c9242e24f3ab1556503ee22a0

  • SHA1

    62481d618f82e682aa5820893e02afdaaf8d94b0

  • SHA256

    cff77c18e5dd0cfe49be2a540ce0136941f44444b333825551e65f370e09b3ab

  • SHA512

    82697ad31d398485129bf750d3ca2589b21a12ea68f50d994deef99f1355581f53e89159596a3dddae4268d1711be30b74db231f48c6eb4359627839e84a9832

  • SSDEEP

    12288:CP6ys+NgzZhkDjhamrRxoF50fee8cr/SuEmZiQdt5NkRu4:WBNUfknt+noefOEKiEXNj4

Score
10/10

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Drops file in Drivers directory 2 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 53 IoCs
  • Runs .reg file with regedit 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cff77c18e5dd0cfe49be2a540ce0136941f44444b333825551e65f370e09b3ab.exe
    "C:\Users\Admin\AppData\Local\Temp\cff77c18e5dd0cfe49be2a540ce0136941f44444b333825551e65f370e09b3ab.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Drops file in Drivers directory
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4536
    • C:\Windows\SysWOW64\regedit.exe
      C:\Windows\regedit.exe /S C:\Windows\system32\msscp.reg
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Runs .reg file with regedit
      PID:1412
    • C:\Users\Admin\AppData\Local\Temp\cff77c18e5dd0cfe49be2a540ce0136941f44444b333825551e65f370e09b3ab.exe
      C:\Users\Admin\AppData\Local\Temp\cff77c18e5dd0cfe49be2a540ce0136941f44444b333825551e65f370e09b3ab.exe
      2⤵
      • Drops file in Drivers directory
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies Internet Explorer start page
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3280
      • C:\Windows\SysWOW64\regedit.exe
        C:\Windows\regedit.exe /S C:\Windows\system32\msscp.reg
        3⤵
        • Modifies visibility of file extensions in Explorer
        • Runs .reg file with regedit
        PID:4104

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Program Files\Common Files\System\taobao.ico

          Filesize

          14KB

          MD5

          468fada123f5548ac87e57bae81f6782

          SHA1

          edb8f012c25906e6afd8bf335b495e16c440243d

          SHA256

          091c882bb307d57f2c7c42309e7ba8740130fef8c3ed772b0bc5e5505e37034d

          SHA512

          635ec26c88c2394dd4f2a81b9aea8f429a91adfeb37ae34e51b03f3cf8e503c123c3685938f40cea07d6146e0c7113aadbe62fa528f1f6d8b995e617fd68a4aa

        • C:\WINDOWS\system32\drivers\etc\hosts

          Filesize

          3KB

          MD5

          c098ad7d8199764f7de229c325865c6d

          SHA1

          3a667a77be11aa5127f73d559220e89d6f88a427

          SHA256

          e07bd2b9bd8fdabb55285244fc4efecf296e0ae12cc7e4b29de949674b40b2c8

          SHA512

          15016cc9001759fb1398de91df14659d68e39b415b02182f62362533fb6c0f8c96a714fda5fbbba73fe21116bffa9d9095d44d93fce6541d522ec59e5929e5dd

        • C:\Windows\SysWOW64\msscp.reg

          Filesize

          339B

          MD5

          f95095dc3217ddbddf21c7284ba10f8b

          SHA1

          fd5201cf9aa7859b9d93ba8ffd6ba80db16eacae

          SHA256

          caa4e4cc7de0f55adade9132ed724c32197cdfb9df6021ff061a94ae57755ad3

          SHA512

          2eeb0e510f837dcd78fe72d0196dda581ab464bb10ba507348078ca00e10a51cb25ab40d29c8288ee2e0fbd61fa324b65200be1ced9ea7a565267ac73db967f6

        • C:\Windows\SysWOW64\msscp.reg

          Filesize

          339B

          MD5

          f95095dc3217ddbddf21c7284ba10f8b

          SHA1

          fd5201cf9aa7859b9d93ba8ffd6ba80db16eacae

          SHA256

          caa4e4cc7de0f55adade9132ed724c32197cdfb9df6021ff061a94ae57755ad3

          SHA512

          2eeb0e510f837dcd78fe72d0196dda581ab464bb10ba507348078ca00e10a51cb25ab40d29c8288ee2e0fbd61fa324b65200be1ced9ea7a565267ac73db967f6

        • memory/3280-140-0x0000000000400000-0x00000000004DD000-memory.dmp

          Filesize

          884KB

        • memory/4536-132-0x0000000000400000-0x00000000004DD000-memory.dmp

          Filesize

          884KB

        • memory/4536-141-0x0000000000400000-0x00000000004DD000-memory.dmp

          Filesize

          884KB