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Analysis

  • max time kernel
    147s
  • max time network
    44s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    06/11/2022, 18:53

General

  • Target

    890bba4bd5423d85f820113af05ddd6f7f7cd7d7a648af4b642a91721613ea13.exe

  • Size

    100KB

  • MD5

    07a35c9cc3b1a5ee362b8af6e8fd27a6

  • SHA1

    13ffb83d880b50893653e4e89c51ff5d2842679b

  • SHA256

    890bba4bd5423d85f820113af05ddd6f7f7cd7d7a648af4b642a91721613ea13

  • SHA512

    c1861231704c0b46f975ca3c94eb59704efd78fc39bb93c122354bb85e0d4529eb80ae797cd4de60303dd637918442b2f769979dff7bbd744965f1f40f5236c9

  • SSDEEP

    3072:P5XbZMlNQZsYoUNj+nGtwCgfJ49rHhOhs:9QQiYDanGlgfuOhs

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 2 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 19 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1272
      • C:\Users\Admin\AppData\Local\Temp\890bba4bd5423d85f820113af05ddd6f7f7cd7d7a648af4b642a91721613ea13.exe
        "C:\Users\Admin\AppData\Local\Temp\890bba4bd5423d85f820113af05ddd6f7f7cd7d7a648af4b642a91721613ea13.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:1348
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1220
      • C:\Windows\system32\taskhost.exe
        "taskhost.exe"
        1⤵
          PID:1128

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1348-54-0x00000000750A1000-0x00000000750A3000-memory.dmp

          Filesize

          8KB

        • memory/1348-56-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB

        • memory/1348-55-0x0000000001C90000-0x0000000002D1E000-memory.dmp

          Filesize

          16.6MB

        • memory/1348-57-0x0000000000240000-0x0000000000242000-memory.dmp

          Filesize

          8KB

        • memory/1348-58-0x00000000744E1000-0x00000000744E3000-memory.dmp

          Filesize

          8KB

        • memory/1348-59-0x0000000004010000-0x0000000004012000-memory.dmp

          Filesize

          8KB

        • memory/1348-60-0x0000000001C90000-0x0000000002D1E000-memory.dmp

          Filesize

          16.6MB

        • memory/1348-61-0x0000000000240000-0x0000000000242000-memory.dmp

          Filesize

          8KB

        • memory/1348-62-0x0000000004010000-0x0000000004012000-memory.dmp

          Filesize

          8KB

        • memory/1348-63-0x0000000000400000-0x0000000000414000-memory.dmp

          Filesize

          80KB