Analysis

  • max time kernel
    62s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-10-2022 23:27

General

  • Target

    d3dd997f46ba7acd2303eb0be6245248666c3a04cd512a7104455a3c582435c2.exe

  • Size

    410KB

  • MD5

    6243d48bf2131a3b0761a926efe84b70

  • SHA1

    29da1feafa558fc20074e91e9bec88bdcfa54386

  • SHA256

    d3dd997f46ba7acd2303eb0be6245248666c3a04cd512a7104455a3c582435c2

  • SHA512

    bcd5a1c787dbe82ffb8650dcf63064d4792e84777da9ea9b3b9be812c7926ffa53038d7a779239f566e507c98978009123dc2e07b2267ff3baef28a4252499d6

  • SSDEEP

    6144:72EGyyn8t8qgCJsNIrELgoNPrpO7LIyPLldmbvuXMjR1y9lZpY+HFDNA2rbTd:7YqgNNIrEkoNk7L6zSZpY+HF5A2Z

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/

http://klkjwre77638dfqwieuoi888.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 3 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Windows security modification 2 TTPs 7 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:780
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3436
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
          PID:3368
        • C:\Windows\system32\DllHost.exe
          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
          1⤵
            PID:3280
          • C:\Windows\system32\backgroundTaskHost.exe
            "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
            1⤵
              PID:3248
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:4676
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:3732
                • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                  1⤵
                    PID:3520
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:3076
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:2560
                        • C:\Users\Admin\AppData\Local\Temp\d3dd997f46ba7acd2303eb0be6245248666c3a04cd512a7104455a3c582435c2.exe
                          "C:\Users\Admin\AppData\Local\Temp\d3dd997f46ba7acd2303eb0be6245248666c3a04cd512a7104455a3c582435c2.exe"
                          2⤵
                          • Modifies firewall policy service
                          • UAC bypass
                          • Windows security bypass
                          • Disables RegEdit via registry modification
                          • Checks computer location settings
                          • Windows security modification
                          • Checks whether UAC is enabled
                          • Drops file in Windows directory
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of AdjustPrivilegeToken
                          • Suspicious use of WriteProcessMemory
                          • System policy modification
                          PID:1792
                          • C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe
                            "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe"
                            3⤵
                            • Suspicious use of SetWindowsHookEx
                            PID:4960
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2744
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2448
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2408
                            • C:\Windows\system32\dwm.exe
                              "dwm.exe"
                              1⤵
                                PID:312
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:792
                                • C:\Windows\System32\RuntimeBroker.exe
                                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                                  1⤵
                                    PID:3216

                                  Network

                                  MITRE ATT&CK Enterprise v6

                                  Replay Monitor

                                  Loading Replay Monitor...

                                  Downloads

                                  • C:\Users\Admin\AppData\Local\Temp\AdobeARM.log

                                    Filesize

                                    358B

                                    MD5

                                    2fc0fa16ec6f8dba6316d1190016e189

                                    SHA1

                                    503a7db9ce9b5582a56170dcff636a55927893f4

                                    SHA256

                                    878f74f0f6070f8f513f7b8939c63491562c6089a450742257a4ed89ab3a253a

                                    SHA512

                                    f35eaa2946f12ae9d43111c28d09528508085f42b1a4e076ddb2dc035597e7af223d970e154c8eef504de0d89d0b165703da777e3544d448b7ed902ceaf91d1f

                                  • memory/1792-132-0x00000000030B0000-0x000000000413E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/1792-133-0x0000000000070000-0x00000000000DB000-memory.dmp

                                    Filesize

                                    428KB

                                  • memory/1792-134-0x00000000030B0000-0x000000000413E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/1792-136-0x0000000000070000-0x00000000000DB000-memory.dmp

                                    Filesize

                                    428KB

                                  • memory/1792-138-0x00000000030B0000-0x000000000413E000-memory.dmp

                                    Filesize

                                    16.6MB

                                  • memory/4960-135-0x0000000000000000-mapping.dmp