Analysis

  • max time kernel
    151s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 17:21

General

  • Target

    b943386f2b262ad58ffbaefa93d52668a64d0483526c4ac5e21a0bdd57247b1d.exe

  • Size

    78KB

  • MD5

    160d64d20a48d93d5f249eaf94885238

  • SHA1

    7db3446364d8f88e2c92cf4d2088382ea60b8c33

  • SHA256

    b943386f2b262ad58ffbaefa93d52668a64d0483526c4ac5e21a0bdd57247b1d

  • SHA512

    20f0b0b186e641fad63eded78c6f38735cd57ed9a95d5661e957c6c74cc5af0e49999a4d8d29410ab498e3174cfbcd6072f482c05043e0949fbc341596fa5c01

  • SSDEEP

    1536:zUbfeFtM4ScbZUVn2wDKawjL5o9YIa7bEuBgripq0saIXfrKscc8VQTzm2D:AjeFt7bZBwDnqlB7ouKrLtKscc8GS2D

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 4 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
  • Suspicious behavior: EnumeratesProcesses 20 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:784
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:1012
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:792
        • C:\Windows\Explorer.EXE
          C:\Windows\Explorer.EXE
          1⤵
            PID:2696
            • C:\Users\Admin\AppData\Local\Temp\b943386f2b262ad58ffbaefa93d52668a64d0483526c4ac5e21a0bdd57247b1d.exe
              "C:\Users\Admin\AppData\Local\Temp\b943386f2b262ad58ffbaefa93d52668a64d0483526c4ac5e21a0bdd57247b1d.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:3424
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3444
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3680
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3536
                • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                  1⤵
                    PID:3376
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3276
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                      1⤵
                        PID:2504
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2904
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2656
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2544
                            • C:\Windows\System32\RuntimeBroker.exe
                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                              1⤵
                                PID:3984
                              • C:\Windows\system32\backgroundTaskHost.exe
                                "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                                1⤵
                                  PID:3184
                                • C:\Windows\system32\backgroundTaskHost.exe
                                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                  1⤵
                                    PID:4956
                                  • C:\Windows\system32\BackgroundTransferHost.exe
                                    "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
                                    1⤵
                                      PID:1176
                                    • C:\Windows\system32\backgroundTaskHost.exe
                                      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                      1⤵
                                        PID:3516
                                      • C:\Windows\system32\BackgroundTransferHost.exe
                                        "BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.1
                                        1⤵
                                          PID:1252
                                        • C:\Windows\system32\backgroundTaskHost.exe
                                          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                          1⤵
                                            PID:2084

                                          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

                                          2
                                          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/3424-132-0x0000000000400000-0x000000000041B000-memory.dmp
                                            Filesize

                                            108KB

                                          • memory/3424-133-0x00000000023E0000-0x000000000346E000-memory.dmp
                                            Filesize

                                            16.6MB

                                          • memory/3424-134-0x00000000023E0000-0x000000000346E000-memory.dmp
                                            Filesize

                                            16.6MB

                                          • memory/3424-135-0x00000000023E0000-0x000000000346E000-memory.dmp
                                            Filesize

                                            16.6MB