Analysis

  • max time kernel
    148s
  • max time network
    40s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    04-06-2022 10:29

General

  • Target

    1102228102b5986b22f7c4b1db92abdb43a370d23a2f2a8dcb51ff9fd1f2a068.exe

  • Size

    120KB

  • MD5

    7149a4b77b9ecb0087ab252a816e4e97

  • SHA1

    b0f75342889504702d23ab12a8aaa443100cb22d

  • SHA256

    1102228102b5986b22f7c4b1db92abdb43a370d23a2f2a8dcb51ff9fd1f2a068

  • SHA512

    55b77af1c5891ed3de8d93ff83e7afbdd0111fc8289ed93287521e1001722271eb808c6b59ef17a83facf015790b8a71bad4d815a346f3da09794634ee2d1920

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:1184
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1364
        • C:\Users\Admin\AppData\Local\Temp\1102228102b5986b22f7c4b1db92abdb43a370d23a2f2a8dcb51ff9fd1f2a068.exe
          "C:\Users\Admin\AppData\Local\Temp\1102228102b5986b22f7c4b1db92abdb43a370d23a2f2a8dcb51ff9fd1f2a068.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:1000
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1292

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Initial Access

        Replication Through Removable Media

        1
        T1091

        Persistence

        Modify Existing Service

        1
        T1031

        Privilege Escalation

        Bypass User Account Control

        1
        T1088

        Defense Evasion

        Modify Registry

        5
        T1112

        Bypass User Account Control

        1
        T1088

        Disabling Security Tools

        3
        T1089

        Discovery

        System Information Discovery

        3
        T1082

        Query Registry

        1
        T1012

        Peripheral Device Discovery

        1
        T1120

        Lateral Movement

        Replication Through Removable Media

        1
        T1091

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1000-54-0x0000000075F21000-0x0000000075F23000-memory.dmp
          Filesize

          8KB

        • memory/1000-55-0x0000000001CE0000-0x0000000002D6E000-memory.dmp
          Filesize

          16.6MB

        • memory/1000-56-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB

        • memory/1000-57-0x0000000001CE0000-0x0000000002D6E000-memory.dmp
          Filesize

          16.6MB

        • memory/1000-58-0x00000000003E0000-0x00000000003E2000-memory.dmp
          Filesize

          8KB

        • memory/1000-59-0x0000000074FB1000-0x0000000074FB3000-memory.dmp
          Filesize

          8KB

        • memory/1000-60-0x0000000005290000-0x0000000005292000-memory.dmp
          Filesize

          8KB

        • memory/1000-61-0x0000000001CE0000-0x0000000002D6E000-memory.dmp
          Filesize

          16.6MB

        • memory/1000-62-0x00000000003E0000-0x00000000003E2000-memory.dmp
          Filesize

          8KB

        • memory/1000-63-0x0000000005290000-0x0000000005292000-memory.dmp
          Filesize

          8KB

        • memory/1000-64-0x0000000000400000-0x000000000041B000-memory.dmp
          Filesize

          108KB