Overview

overview

10

Static

static

3

2024-05-22...re.exe

windows7-x64

10

2024-05-22...re.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    140s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/05/2024, 22:53

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General

  • Target
    2024-05-22_c1a6d8bcd536cf7de00bc146a111715f_bkransomware.exe
  • Size 529KB
  • Sample240522-2tzstscb36
  • SHA256 08e4466e0ee7b93fd4a7aa406070539d64fdac951fd6c73aa8ff0d09318b4021
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
salitybackdoorevasiontrojanupx

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
    evasion
  • Sality

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

    backdoorsality
  • UAC bypass 3 TTPs 1 IoCs
    evasiontrojan
  • Windows security bypass 2 TTPs 6 IoCs
    evasiontrojan
  • Detects executables packed with Sality Polymorphic Code Generator or Simple Poly Engine or Sality 11 IoCs
  • UPX dump on OEP (original entry point) 12 IoCs
  • UPX packed file 11 IoCs

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

    upx
  • Windows security modification 2 TTPs 7 IoCs
    evasiontrojan
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • System policy modification 1 TTPs 1 IoCs
    evasion

Processes

  • C:\Windows\system32\fontdrvhost.exe
    "fontdrvhost.exe"
    1⤵
      PID:796
    • C:\Windows\system32\fontdrvhost.exe
      "fontdrvhost.exe"
      1⤵
        PID:804
      • C:\Windows\system32\dwm.exe
        "dwm.exe"
        1⤵
          PID:380
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
            PID:2620
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
            1⤵
              PID:2632
            • C:\Windows\system32\taskhostw.exe
              taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
              1⤵
                PID:2868
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                  PID:3516
                  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_c1a6d8bcd536cf7de00bc146a111715f_bkransomware.exe
                    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_c1a6d8bcd536cf7de00bc146a111715f_bkransomware.exe"
                    2⤵
                    • Modifies firewall policy service
                    • UAC bypass
                    • Windows security bypass
                    • Windows security modification
                    • Checks whether UAC is enabled
                    • Drops file in Windows directory
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of SetWindowsHookEx
                    • Suspicious use of WriteProcessMemory
                    • System policy modification
                    PID:2672
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                  1⤵
                    PID:3656
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                    1⤵
                      PID:3840
                    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                      1⤵
                        PID:3928
                      • C:\Windows\System32\RuntimeBroker.exe
                        C:\Windows\System32\RuntimeBroker.exe -Embedding
                        1⤵
                          PID:4028
                        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
                          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
                          1⤵
                            PID:748
                          • C:\Windows\System32\RuntimeBroker.exe
                            C:\Windows\System32\RuntimeBroker.exe -Embedding
                            1⤵
                              PID:3872
                            • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe
                              "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\InputApp\TextInputHost.exe" -ServerName:InputApp.AppX9jnwykgrccxc8by3hsrsh07r423xzvav.mca
                              1⤵
                                PID:3108
                              • C:\Windows\System32\RuntimeBroker.exe
                                C:\Windows\System32\RuntimeBroker.exe -Embedding
                                1⤵
                                  PID:4964
                                • C:\Windows\system32\backgroundTaskHost.exe
                                  "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
                                  1⤵
                                    PID:2560
                                  • C:\Windows\system32\backgroundTaskHost.exe
                                    "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
                                    1⤵
                                      PID:4584

                                    Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

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                                          Downloads

                                          memory/2672-0-0x0000000000400000-0x000000000048A000-memory.dmp
                                          Download

                                          memory/2672-1-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-3-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-5-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-7-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-15-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-20-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-16-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-23-0x0000000000C10000-0x0000000000C12000-memory.dmp
                                          Download

                                          memory/2672-19-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-18-0x0000000000C10000-0x0000000000C12000-memory.dmp
                                          Download

                                          memory/2672-17-0x0000000000C10000-0x0000000000C12000-memory.dmp
                                          Download

                                          memory/2672-4-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-6-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download

                                          memory/2672-9-0x00000000041D0000-0x00000000041D1000-memory.dmp
                                          Download

                                          memory/2672-8-0x0000000000C10000-0x0000000000C12000-memory.dmp
                                          Download

                                          memory/2672-33-0x0000000000400000-0x000000000048A000-memory.dmp
                                          Download

                                          memory/2672-21-0x0000000002380000-0x000000000343A000-memory.dmp
                                          Download