Analysis

  • max time kernel
    146s
  • max time network
    42s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    30-10-2022 21:46

General

  • Target

    c3a87bb23d15d81f5b1a1289af825197ba7de9cdded55dc7379ba3f8ae76523d.exe

  • Size

    100KB

  • MD5

    91c63bd8a2d846e72f4d0b51ef41c553

  • SHA1

    79ce5ee1e13f89dbec918fc2029aa937e651434e

  • SHA256

    c3a87bb23d15d81f5b1a1289af825197ba7de9cdded55dc7379ba3f8ae76523d

  • SHA512

    7e54001ba7d33e1842764405799ddfa47303e8f57b029dbe1635b60862fd6c81d26a3218fcac0d91bda2130db570aa52d09b6861dc3f2bad9bdedfc3f185411a

  • SSDEEP

    3072:uRXKkI69JTbUO1uS2TQu1CFrLbbUn9uDj:uR6kIudQuKQu1CFrvecj

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:1260
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1396
      • C:\Windows\Explorer.EXE
        C:\Windows\Explorer.EXE
        1⤵
          PID:1424
          • C:\Users\Admin\AppData\Local\Temp\c3a87bb23d15d81f5b1a1289af825197ba7de9cdded55dc7379ba3f8ae76523d.exe
            "C:\Users\Admin\AppData\Local\Temp\c3a87bb23d15d81f5b1a1289af825197ba7de9cdded55dc7379ba3f8ae76523d.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:1368

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1368-54-0x0000000076071000-0x0000000076073000-memory.dmp

          Filesize

          8KB

        • memory/1368-55-0x0000000001DD0000-0x0000000002E5E000-memory.dmp

          Filesize

          16.6MB

        • memory/1368-56-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB

        • memory/1368-57-0x0000000001DD0000-0x0000000002E5E000-memory.dmp

          Filesize

          16.6MB

        • memory/1368-58-0x0000000000280000-0x0000000000282000-memory.dmp

          Filesize

          8KB

        • memory/1368-59-0x00000000748B1000-0x00000000748B3000-memory.dmp

          Filesize

          8KB

        • memory/1368-60-0x00000000041D0000-0x00000000041D2000-memory.dmp

          Filesize

          8KB

        • memory/1368-61-0x0000000001DD0000-0x0000000002E5E000-memory.dmp

          Filesize

          16.6MB

        • memory/1368-62-0x0000000000280000-0x0000000000282000-memory.dmp

          Filesize

          8KB

        • memory/1368-63-0x00000000041D0000-0x00000000041D2000-memory.dmp

          Filesize

          8KB

        • memory/1368-64-0x0000000000400000-0x0000000000413000-memory.dmp

          Filesize

          76KB