Analysis

  • max time kernel
    185s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2022 11:50

General

  • Target

    8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144.exe

  • Size

    96KB

  • MD5

    8bd71af5728f60cb629d9348dc0201c7

  • SHA1

    42e4d8e9cdfb088b4396ec63c6f881619d0501bf

  • SHA256

    8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144

  • SHA512

    4598c74b872a08e50dfb216c4c29aacfd2409dbe9dc33bca9f8cfe2fd26f9b2874267a977c5a21135094f19b7f0137932317f33416521573b5a8736edcb41064

  • SSDEEP

    3072:t1q3uFi0f9d2/A64gtmH3l3UpqJAdBgTGOq:fdiLYQ8V3BlT

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
  • 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:1120
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1236
        • C:\Users\Admin\AppData\Local\Temp\8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144.exe
          "C:\Users\Admin\AppData\Local\Temp\8f9c3fcb8c8c4a1d9708c60cc54fd394b5a5ef005445ec186c8236a163485144.exe"
          2⤵
          • Modifies firewall policy service
          • UAC bypass
          • Windows security bypass
          • 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:1872
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1172

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1872-54-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

          Filesize

          8KB

        • memory/1872-55-0x0000000001EE0000-0x0000000002F6E000-memory.dmp

          Filesize

          16.6MB

        • memory/1872-56-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB

        • memory/1872-57-0x0000000001EE0000-0x0000000002F6E000-memory.dmp

          Filesize

          16.6MB

        • memory/1872-58-0x00000000002D0000-0x00000000002D2000-memory.dmp

          Filesize

          8KB

        • memory/1872-59-0x0000000074061000-0x0000000074063000-memory.dmp

          Filesize

          8KB

        • memory/1872-60-0x00000000040D0000-0x00000000040D2000-memory.dmp

          Filesize

          8KB

        • memory/1872-61-0x0000000001EE0000-0x0000000002F6E000-memory.dmp

          Filesize

          16.6MB

        • memory/1872-62-0x00000000002D0000-0x00000000002D2000-memory.dmp

          Filesize

          8KB

        • memory/1872-63-0x00000000040D0000-0x00000000040D2000-memory.dmp

          Filesize

          8KB

        • memory/1872-64-0x0000000000400000-0x0000000000412000-memory.dmp

          Filesize

          72KB