Analysis

  • max time kernel
    154s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 18:58

General

  • Target

    85dd5f123e48e7332f662acf1aad74513b359ae95c021b99127121a2d2fc9a4b.exe

  • Size

    460KB

  • MD5

    42ca7c07506ef576fb4132d96fbbd738

  • SHA1

    4ae52958e3942e7e43e72e4d4bc3c4b724ad0055

  • SHA256

    85dd5f123e48e7332f662acf1aad74513b359ae95c021b99127121a2d2fc9a4b

  • SHA512

    a35b1837dc546869701da13c29b5722a3312ae89fa1fda23b87e1cf826f7cd53c132f00812944741806f6edf603146b0f66b1bfc7cbb7a05d0584d9f8beeb182

  • SSDEEP

    12288:Ha2AW4g1y8JB4IJwHfO1Kho8r13L5g1z0myS43XNt2oSgBwr0hP:6dWL4IJr2hb5g1z2S43XNt9iWP

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 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • 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 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:760
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:1020
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:768
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2820
          • C:\Windows\system32\taskhostw.exe
            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
            1⤵
              PID:2896
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
              1⤵
                PID:2856
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:4752
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3704
                  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                    1⤵
                      PID:3504
                    • C:\Windows\System32\RuntimeBroker.exe
                      C:\Windows\System32\RuntimeBroker.exe -Embedding
                      1⤵
                        PID:3408
                      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                        1⤵
                          PID:3340
                        • C:\Windows\system32\DllHost.exe
                          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                          1⤵
                            PID:3240
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                            1⤵
                              PID:2880
                            • C:\Windows\Explorer.EXE
                              C:\Windows\Explorer.EXE
                              1⤵
                                PID:380
                                • C:\Users\Admin\AppData\Local\Temp\85dd5f123e48e7332f662acf1aad74513b359ae95c021b99127121a2d2fc9a4b.exe
                                  "C:\Users\Admin\AppData\Local\Temp\85dd5f123e48e7332f662acf1aad74513b359ae95c021b99127121a2d2fc9a4b.exe"
                                  2⤵
                                  • Modifies firewall policy service
                                  • UAC bypass
                                  • Windows security bypass
                                  • Disables RegEdit via registry modification
                                  • Identifies Wine through registry keys
                                  • 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:4976

                              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

                              Virtualization/Sandbox Evasion

                              1
                              T1497

                              Discovery

                              Query Registry

                              2
                              T1012

                              Virtualization/Sandbox Evasion

                              1
                              T1497

                              System Information Discovery

                              2
                              T1082

                              Peripheral Device Discovery

                              1
                              T1120

                              Lateral Movement

                              Replication Through Removable Media

                              1
                              T1091

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • memory/4976-132-0x0000000000400000-0x0000000000518000-memory.dmp
                                Filesize

                                1.1MB

                              • memory/4976-135-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-134-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-133-0x0000000002DC0000-0x0000000003E4E000-memory.dmp
                                Filesize

                                16.6MB

                              • memory/4976-136-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-137-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-138-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-139-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-140-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-141-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-143-0x0000000002DC0000-0x0000000003E4E000-memory.dmp
                                Filesize

                                16.6MB

                              • memory/4976-142-0x0000000000860000-0x0000000000864000-memory.dmp
                                Filesize

                                16KB

                              • memory/4976-144-0x0000000000400000-0x0000000000518000-memory.dmp
                                Filesize

                                1.1MB

                              • memory/4976-145-0x0000000002DC0000-0x0000000003E4E000-memory.dmp
                                Filesize

                                16.6MB