Analysis

  • max time kernel
    175s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25-06-2022 06:08

General

  • Target

    3a3ae20f3768b5c488841c1244f5433d033e0786fcecdc150c72a22b798e8948.exe

  • Size

    100KB

  • MD5

    dc40a0bfc4c64550ea1e5d71fced78c2

  • SHA1

    88dce2f6132ae2ca5eef97ce520e47ddc776dfc9

  • SHA256

    3a3ae20f3768b5c488841c1244f5433d033e0786fcecdc150c72a22b798e8948

  • SHA512

    d07c344770a25d9d8c99b66099d3d84c1a232d4ebd2b9121de36f0fd67ec3e776498e9b112e4f54a582576117067f8d92afff3b94c2e85dc90db75800e216ec5

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 2 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\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1220
      • C:\Users\Admin\AppData\Local\Temp\3a3ae20f3768b5c488841c1244f5433d033e0786fcecdc150c72a22b798e8948.exe
        "C:\Users\Admin\AppData\Local\Temp\3a3ae20f3768b5c488841c1244f5433d033e0786fcecdc150c72a22b798e8948.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:1956
    • C:\Windows\system32\Dwm.exe
      "C:\Windows\system32\Dwm.exe"
      1⤵
        PID:1184
      • C:\Windows\system32\taskhost.exe
        "taskhost.exe"
        1⤵
          PID:1124

        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/1956-54-0x00000000761F1000-0x00000000761F3000-memory.dmp
          Filesize

          8KB

        • memory/1956-55-0x0000000001E20000-0x0000000002EAE000-memory.dmp
          Filesize

          16.6MB

        • memory/1956-56-0x0000000074D81000-0x0000000074D83000-memory.dmp
          Filesize

          8KB

        • memory/1956-57-0x0000000000400000-0x0000000000414000-memory.dmp
          Filesize

          80KB

        • memory/1956-58-0x0000000001E20000-0x0000000002EAE000-memory.dmp
          Filesize

          16.6MB

        • memory/1956-59-0x0000000000250000-0x0000000000252000-memory.dmp
          Filesize

          8KB

        • memory/1956-60-0x0000000004110000-0x0000000004112000-memory.dmp
          Filesize

          8KB

        • memory/1956-61-0x0000000001E20000-0x0000000002EAE000-memory.dmp
          Filesize

          16.6MB

        • memory/1956-62-0x0000000000250000-0x0000000000252000-memory.dmp
          Filesize

          8KB

        • memory/1956-63-0x0000000004110000-0x0000000004112000-memory.dmp
          Filesize

          8KB