Analysis

  • max time kernel
    169s
  • max time network
    164s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    25-06-2022 01:33

General

  • Target

    65f488a5578d9f63394afae589a47f91319480d01403f4ac953e909f85d7f83d.exe

  • Size

    374KB

  • MD5

    49494f9afc67ffc0921da667106ad647

  • SHA1

    be03bfa21772f1610dbd99c35a370eb4a642b909

  • SHA256

    65f488a5578d9f63394afae589a47f91319480d01403f4ac953e909f85d7f83d

  • SHA512

    8be5af264696e1c786777cc1d7581f6465915f6a21e90caab7d229149a495843482d90bb728a8e54459f7805e74b460db17dd9af7d291d9afa4c9e5e19d7b369

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 11 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 28 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:776
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:332
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3608
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3860
          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
            1⤵
              PID:3700
            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
              1⤵
                PID:3544
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                1⤵
                  PID:3432
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                  1⤵
                    PID:3232
                  • C:\Windows\Explorer.EXE
                    C:\Windows\Explorer.EXE
                    1⤵
                      PID:3120
                      • C:\Users\Admin\AppData\Local\Temp\65f488a5578d9f63394afae589a47f91319480d01403f4ac953e909f85d7f83d.exe
                        "C:\Users\Admin\AppData\Local\Temp\65f488a5578d9f63394afae589a47f91319480d01403f4ac953e909f85d7f83d.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 SetWindowsHookEx
                        • Suspicious use of WriteProcessMemory
                        • System policy modification
                        PID:1384
                    • C:\Windows\system32\taskhostw.exe
                      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                      1⤵
                        PID:2908
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                        1⤵
                          PID:2572
                        • C:\Windows\system32\sihost.exe
                          sihost.exe
                          1⤵
                            PID:2536
                          • C:\Windows\system32\fontdrvhost.exe
                            "fontdrvhost.exe"
                            1⤵
                              PID:784

                            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/1384-130-0x0000000000400000-0x000000000047E000-memory.dmp
                              Filesize

                              504KB

                            • memory/1384-131-0x0000000002210000-0x000000000329E000-memory.dmp
                              Filesize

                              16.6MB

                            • memory/1384-132-0x0000000002210000-0x000000000329E000-memory.dmp
                              Filesize

                              16.6MB

                            • memory/1384-133-0x0000000002210000-0x000000000329E000-memory.dmp
                              Filesize

                              16.6MB

                            • memory/1384-134-0x0000000000400000-0x000000000047E000-memory.dmp
                              Filesize

                              504KB