Analysis

  • max time kernel
    150s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 08:57

General

  • Target

    3df2d6761b47615a253df19d06bf7757333d02098f3afedc9e46437e7f2eb83c.exe

  • Size

    100KB

  • MD5

    135ca29152b267ef1fdcef52b169fdca

  • SHA1

    a6228b2c82de158a86aa0e58799f96b6c4f96f4a

  • SHA256

    3df2d6761b47615a253df19d06bf7757333d02098f3afedc9e46437e7f2eb83c

  • SHA512

    ce910c91c8a54b7c48f3d0cc8c67661398206cfe7e54ae7b2dd943a3dbbba2223795d6af2c64b6f95acd556da3997dfe976a4016690bd744e921111ed60db760

  • SSDEEP

    1536:FJM39NnXWZN1JlLiij0qf72DgFhKnnf2oKRBKmdtqegueVXO8Hi8cUO953YV0Z:3oX+Xj0qf72sFs2VBKYtnb8k95R

Malware Config

Extracted

Family

sality

C2

http://89.119.67.154/testo5/

http://kukutrustnet777.info/home.gif

http://kukutrustnet888.info/home.gif

http://kukutrustnet987.info/home.gif

http://www.klkjwre9fqwieluoi.info/

http://kukutrustnet777888.info/

Signatures

  • Modifies firewall policy service 2 TTPs 3 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 6 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 22 IoCs

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

  • Drops autorun.inf file 1 TTPs 1 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Drops file in Program Files directory 5 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 14 IoCs
  • Suspicious use of AdjustPrivilegeToken 20 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
      PID:1228
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1380
        • C:\Users\Admin\AppData\Local\Temp\3df2d6761b47615a253df19d06bf7757333d02098f3afedc9e46437e7f2eb83c.exe
          "C:\Users\Admin\AppData\Local\Temp\3df2d6761b47615a253df19d06bf7757333d02098f3afedc9e46437e7f2eb83c.exe"
          2⤵
          • Modifies firewall policy service
          • UAC bypass
          • Windows security bypass
          • Disables RegEdit via registry modification
          • Windows security modification
          • Checks whether UAC is enabled
          • Enumerates connected drives
          • Drops autorun.inf file
          • Drops file in Program Files directory
          • Drops file in Windows directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:112
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1320

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/112-54-0x0000000074C11000-0x0000000074C13000-memory.dmp

          Filesize

          8KB

        • memory/112-55-0x0000000001D50000-0x0000000002DDE000-memory.dmp

          Filesize

          16.6MB

        • memory/112-56-0x0000000073FE1000-0x0000000073FE3000-memory.dmp

          Filesize

          8KB

        • memory/112-57-0x0000000000400000-0x0000000000416000-memory.dmp

          Filesize

          88KB

        • memory/112-58-0x0000000001D50000-0x0000000002DDE000-memory.dmp

          Filesize

          16.6MB

        • memory/112-59-0x0000000000320000-0x0000000000322000-memory.dmp

          Filesize

          8KB

        • memory/112-60-0x0000000002FC0000-0x0000000002FC2000-memory.dmp

          Filesize

          8KB

        • memory/112-61-0x0000000001D50000-0x0000000002DDE000-memory.dmp

          Filesize

          16.6MB

        • memory/112-62-0x0000000000320000-0x0000000000322000-memory.dmp

          Filesize

          8KB

        • memory/112-63-0x0000000002FC0000-0x0000000002FC2000-memory.dmp

          Filesize

          8KB