Analysis

  • max time kernel
    152s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/10/2022, 17:08

General

  • Target

    5e403c2592bdfa4ea13b5a1090366738c7f3677b3aaf1ff4d3d93fafe3cdb1b1.exe

  • Size

    564KB

  • MD5

    83b7fc147c5afee43d1aa077a7a34fb0

  • SHA1

    935d876fae41b1500cf190f1d67626d82c4a3140

  • SHA256

    5e403c2592bdfa4ea13b5a1090366738c7f3677b3aaf1ff4d3d93fafe3cdb1b1

  • SHA512

    253dcb8c7e10d722e4612cb7cec6c8970481663544f3e8ccd8f1e3479f3fd699fccb448a167e12725314ecf8bc7ce6d7283ddafaa602cb34a14f59ed9aa2ed99

  • SSDEEP

    12288:eG1bVi4XLf83ZMrf+srOvzqF5+j+6QmZTP1j9Lwy45Gj:D1bViAjQZM7+srQg+j+jSL1j9jj

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 3 IoCs

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

  • Loads dropped DLL 1 IoCs
  • 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 System32 directory 1 IoCs
  • 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 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\dwm.exe
    "dwm.exe"
    1⤵
      PID:1020
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3420
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:2076
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
          1⤵
            PID:4512
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3740
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:3512
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:3352
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3252
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:764
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:2556
                        • C:\Users\Admin\AppData\Local\Temp\5e403c2592bdfa4ea13b5a1090366738c7f3677b3aaf1ff4d3d93fafe3cdb1b1.exe
                          "C:\Users\Admin\AppData\Local\Temp\5e403c2592bdfa4ea13b5a1090366738c7f3677b3aaf1ff4d3d93fafe3cdb1b1.exe"
                          2⤵
                          • Modifies firewall policy service
                          • UAC bypass
                          • Windows security bypass
                          • Disables RegEdit via registry modification
                          • Loads dropped DLL
                          • Windows security modification
                          • Checks whether UAC is enabled
                          • Enumerates connected drives
                          • Drops autorun.inf file
                          • Drops file in System32 directory
                          • 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:4360
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2604
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2512
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2484
                            • C:\Windows\system32\fontdrvhost.exe
                              "fontdrvhost.exe"
                              1⤵
                                PID:792
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:788

                                Network

                                      MITRE ATT&CK Enterprise v6

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      • C:\Users\Admin\AppData\Local\Temp\GLC4853.tmp

                                        Filesize

                                        144KB

                                        MD5

                                        acfcab119456b15bb70baceb81bd7e5f

                                        SHA1

                                        5db05f57795d1718d78d168aa6de07e252b8706e

                                        SHA256

                                        76c0a0aa1a6a2e050a24795d772ba598cf074a1bb4c8c62658b9e55dbf3a89bd

                                        SHA512

                                        f3203f665177d340a5494f5e59206b8f3a37bdef5ac457b06a144b1db9d8671764ed3536a1093799a8e5a37f4c0b829f75b9d5301f2018b534f9d72be8db1782

                                      • memory/4360-132-0x0000000000400000-0x0000000000419000-memory.dmp

                                        Filesize

                                        100KB

                                      • memory/4360-133-0x00000000023A0000-0x000000000342E000-memory.dmp

                                        Filesize

                                        16.6MB

                                      • memory/4360-134-0x00000000023A0000-0x000000000342E000-memory.dmp

                                        Filesize

                                        16.6MB

                                      • memory/4360-136-0x00000000023A0000-0x000000000342E000-memory.dmp

                                        Filesize

                                        16.6MB

                                      • memory/4360-137-0x0000000000400000-0x0000000000419000-memory.dmp

                                        Filesize

                                        100KB