Analysis

  • max time kernel
    155s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/12/2022, 13:01

General

  • Target

    93b36e8af12835f73fdc8ac52557ab5a396b20448d5b8abcff0685f32244a344.exe

  • Size

    332KB

  • MD5

    68f2bf52e80852dc4acc7a9b71379c70

  • SHA1

    a7c5227e9d9ee61966102e852c0f5ece6c89a5a0

  • SHA256

    93b36e8af12835f73fdc8ac52557ab5a396b20448d5b8abcff0685f32244a344

  • SHA512

    d6ff839718e26dca7616e925704b125035fb04f4491d74dc10dad3e4fdeb0f9c541093a344dac9f1299161575a67b12efc75b7e8e25863e6ad526dd4c293c4b7

  • SSDEEP

    6144:9WlMqTJdeTkav8kfQR3lg+zoTHXWlMpTJW7RXAGy7OOVObay7OOjjq7RXA:IMmdgpNfm3lYLWM/WNXAVOXVOgmNXA

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
  • Executes dropped EXE 1 IoCs
  • 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
  • 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
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:796
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:392
      • C:\Windows\system32\fontdrvhost.exe
        "fontdrvhost.exe"
        1⤵
          PID:804
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3576
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:4756
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:3832
              • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                1⤵
                  PID:3652
                • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                  "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                  1⤵
                    PID:3512
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3412
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                      1⤵
                        PID:3200
                      • C:\Windows\Explorer.EXE
                        C:\Windows\Explorer.EXE
                        1⤵
                          PID:3092
                          • C:\Users\Admin\AppData\Local\Temp\93b36e8af12835f73fdc8ac52557ab5a396b20448d5b8abcff0685f32244a344.exe
                            "C:\Users\Admin\AppData\Local\Temp\93b36e8af12835f73fdc8ac52557ab5a396b20448d5b8abcff0685f32244a344.exe"
                            2⤵
                            • Modifies firewall policy service
                            • UAC bypass
                            • Windows security bypass
                            • Checks computer location settings
                            • 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:640
                            • C:\Users\Admin\AppData\Local\Temp\~sfx00473D4D4D\MODUS B-Boy.exe
                              "C:\Users\Admin\AppData\Local\Temp\~sfx00473D4D4D\MODUS B-Boy.exe"
                              3⤵
                              • Executes dropped EXE
                              • Suspicious behavior: EnumeratesProcesses
                              PID:5044
                        • C:\Windows\system32\taskhostw.exe
                          taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                          1⤵
                            PID:2944
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                            1⤵
                              PID:2848
                            • C:\Windows\system32\sihost.exe
                              sihost.exe
                              1⤵
                                PID:2816

                              Network

                              MITRE ATT&CK Enterprise v6

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              • C:\Users\Admin\AppData\Local\Temp\~sfx00473D4D4D\MODUS B-Boy.exe

                                Filesize

                                113KB

                                MD5

                                4cd110833561239e68c63aafeca49489

                                SHA1

                                18a74252693b486ee5743cdd9e16b57589a9baa8

                                SHA256

                                22b270b1249c44ca7512d5c5c2ef30c51eb938da6b7f433dc3d38f179328dc03

                                SHA512

                                4e7744983171d000bb5b60fa3c37c23bf51b868564bad32c5b3749bad656bc79e68d3bc29dadacb4948a1b9f96a5a8686ea1d7c1e4deee8d33fd16fc60f6cfe6

                              • C:\Users\Admin\AppData\Local\Temp\~sfx00473D4D4D\MODUS B-Boy.exe

                                Filesize

                                113KB

                                MD5

                                4cd110833561239e68c63aafeca49489

                                SHA1

                                18a74252693b486ee5743cdd9e16b57589a9baa8

                                SHA256

                                22b270b1249c44ca7512d5c5c2ef30c51eb938da6b7f433dc3d38f179328dc03

                                SHA512

                                4e7744983171d000bb5b60fa3c37c23bf51b868564bad32c5b3749bad656bc79e68d3bc29dadacb4948a1b9f96a5a8686ea1d7c1e4deee8d33fd16fc60f6cfe6

                              • memory/640-132-0x0000000002420000-0x00000000034DA000-memory.dmp

                                Filesize

                                16.7MB

                              • memory/640-133-0x0000000000400000-0x0000000000527000-memory.dmp

                                Filesize

                                1.2MB

                              • memory/640-134-0x0000000002420000-0x00000000034DA000-memory.dmp

                                Filesize

                                16.7MB

                              • memory/640-139-0x0000000000400000-0x0000000000527000-memory.dmp

                                Filesize

                                1.2MB

                              • memory/640-140-0x0000000002420000-0x00000000034DA000-memory.dmp

                                Filesize

                                16.7MB

                              • memory/5044-138-0x00007FFC99B40000-0x00007FFC9A576000-memory.dmp

                                Filesize

                                10.2MB