Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/10/2022, 22:09

General

  • Target

    e651613dae47442f22c83e35c1ff73d9c84762c9e1b995f598c243ca632ac55e.exe

  • Size

    211KB

  • MD5

    5afd092116be71db537b71b7a5d8f7e0

  • SHA1

    6c05f318377302278cda2639559bcc3ce3c91db6

  • SHA256

    e651613dae47442f22c83e35c1ff73d9c84762c9e1b995f598c243ca632ac55e

  • SHA512

    a9062f733e3cc2603ef09f2354231402ff6d248d0b25591001747417e3693a6ed70af70d257686798fab56131dca1b47f5f27ea597cffcb69eb3718acabc3ba2

  • SSDEEP

    3072:dm3K+WkUPb1WpXVxAaGBvbNvNbNJkvmhyPQbaDTUXGIDbwKDqCtrwdAxaVTtVHLa:cxWjoIDbByGPMsMP74Akb6tSBk0

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 visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Sality

    Sality is backdoor written in C++, first discovered in 2003.

  • UAC bypass 3 TTPs 2 IoCs
  • Windows security bypass 2 TTPs 12 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • Disables Task Manager via registry modification
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 2 IoCs
  • UPX packed file 7 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 14 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in Program Files directory 15 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.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:776
    • C:\Windows\system32\dwm.exe
      "dwm.exe"
      1⤵
        PID:64
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
          PID:2268
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
          1⤵
            PID:2300
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:1208
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
              1⤵
                PID:4952
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:4776
                • C:\Windows\System32\RuntimeBroker.exe
                  C:\Windows\System32\RuntimeBroker.exe -Embedding
                  1⤵
                    PID:3840
                  • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                    "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                    1⤵
                      PID:3580
                    • 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:3376
                        • C:\Windows\system32\DllHost.exe
                          C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                          1⤵
                            PID:3276
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                            1⤵
                              PID:2796
                            • C:\Windows\Explorer.EXE
                              C:\Windows\Explorer.EXE
                              1⤵
                                PID:3056
                                • C:\Users\Admin\AppData\Local\Temp\e651613dae47442f22c83e35c1ff73d9c84762c9e1b995f598c243ca632ac55e.exe
                                  "C:\Users\Admin\AppData\Local\Temp\e651613dae47442f22c83e35c1ff73d9c84762c9e1b995f598c243ca632ac55e.exe"
                                  2⤵
                                  • 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 Program Files directory
                                  • Drops file in Windows directory
                                  • Suspicious behavior: EnumeratesProcesses
                                  • Suspicious use of AdjustPrivilegeToken
                                  • Suspicious use of SetWindowsHookEx
                                  • Suspicious use of WriteProcessMemory
                                  • System policy modification
                                  PID:2316
                                  • C:\Windows\SysWOW64\netsh.exe
                                    netsh firewall set opmode disable
                                    3⤵
                                    • Modifies Windows Firewall
                                    PID:4220
                                    • C:\Windows\System32\Conhost.exe
                                      \??\C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
                                      4⤵
                                        PID:2388
                                    • C:\Users\Admin\weoxii.exe
                                      "C:\Users\Admin\weoxii.exe"
                                      3⤵
                                      • Modifies visiblity of hidden/system files in Explorer
                                      • UAC bypass
                                      • Windows security bypass
                                      • Disables RegEdit via registry modification
                                      • Executes dropped EXE
                                      • Windows security modification
                                      • Adds Run key to start application
                                      • Checks whether UAC is enabled
                                      • Drops file in Program Files directory
                                      • Suspicious behavior: EnumeratesProcesses
                                      • Suspicious use of SetWindowsHookEx
                                      • Suspicious use of WriteProcessMemory
                                      • System policy modification
                                      PID:5068
                                      • C:\Windows\SysWOW64\netsh.exe
                                        netsh firewall set opmode disable
                                        4⤵
                                        • Modifies Windows Firewall
                                        PID:1540
                                    • C:\Windows\SysWOW64\NOTEPAD.EXE
                                      "C:\Windows\system32\NOTEPAD.EXE"
                                      3⤵
                                        PID:804
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -u -p 2316 -s 2092
                                        3⤵
                                        • Program crash
                                        PID:388
                                  • C:\Windows\system32\taskhostw.exe
                                    taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                                    1⤵
                                      PID:2440
                                    • C:\Windows\system32\fontdrvhost.exe
                                      "fontdrvhost.exe"
                                      1⤵
                                        PID:784
                                      • C:\Windows\SysWOW64\WerFault.exe
                                        C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2316 -ip 2316
                                        1⤵
                                          PID:376

                                        Network

                                        MITRE ATT&CK Enterprise v6

                                        Replay Monitor

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                                        Downloads

                                        • C:\Users\Admin\weoxii.exe

                                          Filesize

                                          211KB

                                          MD5

                                          e4441895acf00144d9ed7c649a062264

                                          SHA1

                                          1921978c3223d7dde4b300bba630a5b00cd82a69

                                          SHA256

                                          23b50b9f103ac37e6652a434ca7e099a575bc3724e790ccdee506219d7f7732c

                                          SHA512

                                          ef27a4723ef69b49049ad1a02b8fa194cb9cf2668392d96ef614c6a62ee52069976a05288215d036fbf91a3d0241f39ae54e306237c35bb4a0a6f8bae76fdb24

                                        • C:\Users\Admin\weoxii.exe

                                          Filesize

                                          211KB

                                          MD5

                                          e4441895acf00144d9ed7c649a062264

                                          SHA1

                                          1921978c3223d7dde4b300bba630a5b00cd82a69

                                          SHA256

                                          23b50b9f103ac37e6652a434ca7e099a575bc3724e790ccdee506219d7f7732c

                                          SHA512

                                          ef27a4723ef69b49049ad1a02b8fa194cb9cf2668392d96ef614c6a62ee52069976a05288215d036fbf91a3d0241f39ae54e306237c35bb4a0a6f8bae76fdb24

                                        • C:\Windows\SYSTEM.INI

                                          Filesize

                                          258B

                                          MD5

                                          27898c2b0583d046752dda2e674c3c8b

                                          SHA1

                                          b1dfdde483b3cbed921e88b619259667c13a63a9

                                          SHA256

                                          f7f0b13c798f67c9a8cccae4bc30ea2bf959b277b998c80e08780f1a1a801271

                                          SHA512

                                          f45c6323c42b9aad2b8add96c64e79534f553d5c951fc7cb3dca24612b5e9e2aef1493cd6f7b1e647af2be0a3802db86bd54bfa990bf108fbbb49cfab3ad3383

                                        • memory/2316-133-0x0000000002B80000-0x0000000003BB2000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/2316-137-0x0000000002B80000-0x0000000003BB2000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/2316-132-0x0000000000400000-0x0000000000438000-memory.dmp

                                          Filesize

                                          224KB

                                        • memory/2316-144-0x0000000002B80000-0x0000000003BB2000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/2316-146-0x0000000000400000-0x0000000000438000-memory.dmp

                                          Filesize

                                          224KB

                                        • memory/2316-147-0x0000000002B80000-0x0000000003BB2000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/5068-148-0x0000000003250000-0x0000000004282000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/5068-143-0x0000000000400000-0x0000000000438000-memory.dmp

                                          Filesize

                                          224KB

                                        • memory/5068-151-0x0000000003250000-0x0000000004282000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/5068-152-0x0000000003250000-0x0000000004282000-memory.dmp

                                          Filesize

                                          16.2MB

                                        • memory/5068-153-0x0000000000400000-0x0000000000438000-memory.dmp

                                          Filesize

                                          224KB