Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-08-2022 09:32

General

  • Target

    232f83fad3deda8644c603c068c057d8a163698efedc2c13651eebb46215375a.exe

  • Size

    131KB

  • MD5

    b0b0b8c1e356acced8ae97b9fd448932

  • SHA1

    b6b9c6f0bb858e5899e7cea98f7f43940b0235df

  • SHA256

    232f83fad3deda8644c603c068c057d8a163698efedc2c13651eebb46215375a

  • SHA512

    8914e78ea7ccb0ebff3367e69345a496e14637e54c436885559d2f7cd6a26e608202161aadfb69317f764bb00a6b6f14391935e1450f818edfcd0152509d9f6b

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

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 3 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 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 1 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3412
    • C:\Windows\system32\backgroundTaskHost.exe
      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
      1⤵
        PID:2848
      • C:\Windows\system32\backgroundTaskHost.exe
        "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
        1⤵
          PID:2428
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3908
          • 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:3492
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:3344
                • 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:2920
                    • C:\Windows\Explorer.EXE
                      C:\Windows\Explorer.EXE
                      1⤵
                        PID:2640
                        • C:\Users\Admin\AppData\Local\Temp\232f83fad3deda8644c603c068c057d8a163698efedc2c13651eebb46215375a.exe
                          "C:\Users\Admin\AppData\Local\Temp\232f83fad3deda8644c603c068c057d8a163698efedc2c13651eebb46215375a.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 WriteProcessMemory
                          • System policy modification
                          PID:560
                      • C:\Windows\system32\taskhostw.exe
                        taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                        1⤵
                          PID:2824
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                          1⤵
                            PID:2780
                          • C:\Windows\system32\sihost.exe
                            sihost.exe
                            1⤵
                              PID:2740
                            • C:\Windows\system32\dwm.exe
                              "dwm.exe"
                              1⤵
                                PID:312
                              • C:\Windows\system32\fontdrvhost.exe
                                "fontdrvhost.exe"
                                1⤵
                                  PID:804
                                • C:\Windows\system32\fontdrvhost.exe
                                  "fontdrvhost.exe"
                                  1⤵
                                    PID:800
                                  • C:\Windows\System32\RuntimeBroker.exe
                                    C:\Windows\System32\RuntimeBroker.exe -Embedding
                                    1⤵
                                      PID:4152

                                    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/560-130-0x0000000000400000-0x0000000000424000-memory.dmp
                                      Filesize

                                      144KB

                                    • memory/560-131-0x0000000000BF0000-0x0000000001CAA000-memory.dmp
                                      Filesize

                                      16.7MB

                                    • memory/560-132-0x0000000000BF0000-0x0000000001CAA000-memory.dmp
                                      Filesize

                                      16.7MB

                                    • memory/560-133-0x0000000000BF0000-0x0000000001CAA000-memory.dmp
                                      Filesize

                                      16.7MB

                                    • memory/560-134-0x0000000000400000-0x0000000000424000-memory.dmp
                                      Filesize

                                      144KB