Analysis

  • max time kernel
    150s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    26-06-2022 22:40

General

  • Target

    35e9796d0491b4c89bab1d56d4b06b0b3f48cf7a794f76224716ba55d1c982e9.exe

  • Size

    100KB

  • MD5

    c558940d6da42f139168173d6ff46d81

  • SHA1

    c74a4e6689564d8bd485f50f13db42482b1c12e6

  • SHA256

    35e9796d0491b4c89bab1d56d4b06b0b3f48cf7a794f76224716ba55d1c982e9

  • SHA512

    75bda2b6c9ee1007e07ed93ac83294004fa4774325309b78696d37a3edfd82ea0320a0ea05f8db937a430d4399c6a1cd865d1e8bb0bc05b876320f3678178024

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

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1196
    • C:\Windows\Explorer.EXE
      C:\Windows\Explorer.EXE
      1⤵
        PID:1256
        • C:\Users\Admin\AppData\Local\Temp\35e9796d0491b4c89bab1d56d4b06b0b3f48cf7a794f76224716ba55d1c982e9.exe
          "C:\Users\Admin\AppData\Local\Temp\35e9796d0491b4c89bab1d56d4b06b0b3f48cf7a794f76224716ba55d1c982e9.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:1376
      • C:\Windows\system32\taskhost.exe
        "taskhost.exe"
        1⤵
          PID:1128

        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/1376-54-0x0000000075AE1000-0x0000000075AE3000-memory.dmp
          Filesize

          8KB

        • memory/1376-55-0x0000000001EC0000-0x0000000002F4E000-memory.dmp
          Filesize

          16.6MB

        • memory/1376-56-0x0000000000400000-0x0000000000414000-memory.dmp
          Filesize

          80KB

        • memory/1376-57-0x0000000001EC0000-0x0000000002F4E000-memory.dmp
          Filesize

          16.6MB

        • memory/1376-58-0x00000000003D0000-0x00000000003D2000-memory.dmp
          Filesize

          8KB

        • memory/1376-59-0x0000000074BE1000-0x0000000074BE3000-memory.dmp
          Filesize

          8KB

        • memory/1376-60-0x00000000041F0000-0x00000000041F2000-memory.dmp
          Filesize

          8KB

        • memory/1376-61-0x0000000001EC0000-0x0000000002F4E000-memory.dmp
          Filesize

          16.6MB

        • memory/1376-62-0x00000000003D0000-0x00000000003D2000-memory.dmp
          Filesize

          8KB

        • memory/1376-63-0x00000000041F0000-0x00000000041F2000-memory.dmp
          Filesize

          8KB