Analysis

  • max time kernel
    145s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-10-2022 16:51

General

  • Target

    50e13ac64cfe51956b5c15465796c4f645e79750cbe6f36a6e7aead598fc5b68.exe

  • Size

    744KB

  • MD5

    67b784ee5cb57165d840535fd132dac8

  • SHA1

    1c25cafbeb127ca4ca0537ec04493c1991bf8db9

  • SHA256

    50e13ac64cfe51956b5c15465796c4f645e79750cbe6f36a6e7aead598fc5b68

  • SHA512

    298ff56144abfc84ed220274f5c76bd8f0384d5052fc0dd932ac6d14dc838677d96dfcdf39c9b2ddb5d9edcc51dbe9beffb97c6e6934a85e7fc8c88523682f0b

  • SSDEEP

    12288:NTyjXW+48qWywrU4kGFezOAVuJ5PIcww7F5DO3HYffB3NItGKa:RIXW/8yw1ez54lI6F5SXYHBdxd

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 2 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
  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\system32\dwm.exe
    "dwm.exe"
    1⤵
      PID:1020
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:784
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:776
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2260
          • C:\Windows\system32\taskhostw.exe
            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
            1⤵
              PID:2364
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
              1⤵
                PID:2276
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:3432
                • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                  1⤵
                    PID:3364
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3260
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:3036
                        • C:\Users\Admin\AppData\Local\Temp\50e13ac64cfe51956b5c15465796c4f645e79750cbe6f36a6e7aead598fc5b68.exe
                          "C:\Users\Admin\AppData\Local\Temp\50e13ac64cfe51956b5c15465796c4f645e79750cbe6f36a6e7aead598fc5b68.exe"
                          2⤵
                          • Modifies firewall policy service
                          • UAC bypass
                          • Windows security bypass
                          • Disables RegEdit via registry modification
                          • 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:3344
                      • C:\Windows\system32\backgroundTaskHost.exe
                        "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                        1⤵
                          PID:1360
                        • C:\Windows\system32\backgroundTaskHost.exe
                          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                          1⤵
                            PID:100
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:4688
                            • C:\Windows\System32\RuntimeBroker.exe
                              C:\Windows\System32\RuntimeBroker.exe -Embedding
                              1⤵
                                PID:3720
                              • 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

                                Network

                                MITRE ATT&CK Enterprise v6

                                Replay Monitor

                                Loading Replay Monitor...

                                Downloads

                                • memory/3344-132-0x0000000003360000-0x00000000043EE000-memory.dmp

                                  Filesize

                                  16.6MB

                                • memory/3344-133-0x0000000000400000-0x00000000004C2000-memory.dmp

                                  Filesize

                                  776KB

                                • memory/3344-134-0x0000000000400000-0x00000000004C2000-memory.dmp

                                  Filesize

                                  776KB

                                • memory/3344-135-0x0000000003360000-0x00000000043EE000-memory.dmp

                                  Filesize

                                  16.6MB