Analysis

  • max time kernel
    139s
  • max time network
    145s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240802-en
  • resource tags

    arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15/09/2024, 22:03

General

  • Target
    4c26dd1754f1bd8da1c39bc2c7721d5bccbd6403d56f0370c53ee4d518167874.exe
  • Size 1.2MB
  • Sample240915-1yccnavgrp
  • SHA256 4c26dd1754f1bd8da1c39bc2c7721d5bccbd6403d56f0370c53ee4d518167874
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects ZharkBot payload 2 IoCs

    ZharkBot is a botnet written C++.

  • Suspicious use of NtCreateUserProcessOtherParentProcess 2 IoCs
  • ZharkBot

    ZharkBot is a botnet written C++.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:3376
      • C:\Users\Admin\AppData\Local\Temp\4c26dd1754f1bd8da1c39bc2c7721d5bccbd6403d56f0370c53ee4d518167874.exe
        "C:\Users\Admin\AppData\Local\Temp\4c26dd1754f1bd8da1c39bc2c7721d5bccbd6403d56f0370c53ee4d518167874.exe"
        2⤵
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4944
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c move Exceed Exceed.bat & Exceed.bat
          3⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1196
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:4068
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "wrsa opssvc"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:2756
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            4⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:1660
          • C:\Windows\SysWOW64\findstr.exe
            findstr /I "avastui avgui bdservicehost nswscsvc sophoshealth"
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3548
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c md 758927
            4⤵
            • System Location Discovery: System Language Discovery
            PID:3484
          • C:\Windows\SysWOW64\findstr.exe
            findstr /V "NonCostsDialogueAngels" Oe
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1988
          • C:\Windows\SysWOW64\cmd.exe
            cmd /c copy /b ..\Algorithm + ..\Dept + ..\Containers + ..\Cal + ..\Filled + ..\Plymouth + ..\Checks + ..\Grounds p
            4⤵
            • System Location Discovery: System Language Discovery
            PID:1764
          • C:\Users\Admin\AppData\Local\Temp\758927\Playboy.pif
            Playboy.pif p
            4⤵
            • Suspicious use of NtCreateUserProcessOtherParentProcess
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:2868
          • C:\Windows\SysWOW64\choice.exe
            choice /d y /t 5
            4⤵
            • System Location Discovery: System Language Discovery
            PID:896
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c schtasks.exe /create /tn "Solving" /tr "wscript //B 'C:\Users\Admin\AppData\Local\MindCalm Technologies LLC\ZenFlow.js'" /sc minute /mo 5 /F
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:476
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /create /tn "Solving" /tr "wscript //B 'C:\Users\Admin\AppData\Local\MindCalm Technologies LLC\ZenFlow.js'" /sc minute /mo 5 /F
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:4832
      • C:\Windows\SysWOW64\cmd.exe
        cmd /k echo [InternetShortcut] > "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ZenFlow.url" & echo URL="C:\Users\Admin\AppData\Local\MindCalm Technologies LLC\ZenFlow.js" >> "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ZenFlow.url" & exit
        2⤵
        • Drops startup file
        • System Location Discovery: System Language Discovery
        PID:2184

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Playboy.pif

          • Path C:\Users\Admin\AppData\Local\Temp\758927\Playboy.pif
          • Size 872KB
          • SHA256 d8b7c7178fbadbf169294e4f29dce582f89a5cf372e9da9215aa082330dc12fd
          • MD5 SHA1 SHA512 SSDEEP

          p

          • Path C:\Users\Admin\AppData\Local\Temp\758927\p
          • Size 569KB
          • SHA256 6d9736e0d27580cf23ca2dde04e7ad37e81f3784ab62055ec9e99111dea31dc4
          • MD5 SHA1 SHA512 SSDEEP

          Algorithm

          • Path C:\Users\Admin\AppData\Local\Temp\Algorithm
          • Size 84KB
          • SHA256 db07c2a20a33ac2fb5db98528bf254fe27de25cb57886183b945e687757c5fdf
          • MD5 SHA1 SHA512 SSDEEP

          Cal

          • Path C:\Users\Admin\AppData\Local\Temp\Cal
          • Size 51KB
          • SHA256 437694e2a7677cfd3bb7b58bcc3c9953da52422faf7aeae1c124403c9fe40d0f
          • MD5 SHA1 SHA512 SSDEEP

          Checks

          • Path C:\Users\Admin\AppData\Local\Temp\Checks
          • Size 85KB
          • SHA256 fbdcdcee83ace5e22451eba67f33daf3c996e254363f6e675b9b2ce19c43fb33
          • MD5 SHA1 SHA512 SSDEEP

          Containers

          • Path C:\Users\Admin\AppData\Local\Temp\Containers
          • Size 66KB
          • SHA256 97d902027afb78a80eda022c942f7810fcfbe69e2107873c4a68cc3ecfef03d9
          • MD5 SHA1 SHA512 SSDEEP

          Dept

          • Path C:\Users\Admin\AppData\Local\Temp\Dept
          • Size 97KB
          • SHA256 8add0b38828c1d98c42edc11ff90de9897f6d5bf336418bff10101ba85d65f87
          • MD5 SHA1 SHA512 SSDEEP

          Exceed

          • Path C:\Users\Admin\AppData\Local\Temp\Exceed
          • Size 21KB
          • SHA256 6d67335c5beedeb1e53bc414f76ca3c2a811af1f920e2145d3f2ed04a892cedf
          • MD5 SHA1 SHA512 SSDEEP

          Filled

          • Path C:\Users\Admin\AppData\Local\Temp\Filled
          • Size 76KB
          • SHA256 6d3e4f61e4bb756ef58c8d87628339c44f7b1ee667397ce2212bde29c434bcae
          • MD5 SHA1 SHA512 SSDEEP

          Grounds

          • Path C:\Users\Admin\AppData\Local\Temp\Grounds
          • Size 54KB
          • SHA256 1486b6bf45f4c7d178c3d15dff7654be7bc56dc873754790bc33a40741f4980d
          • MD5 SHA1 SHA512 SSDEEP

          Leu

          • Path C:\Users\Admin\AppData\Local\Temp\Leu
          • Size 869KB
          • SHA256 b5452a3ec7cd068fc89f74f39180c6f60177a7aaab21d80c2d749cd787f29ca3
          • MD5 SHA1 SHA512 SSDEEP

          Oe

          • Path C:\Users\Admin\AppData\Local\Temp\Oe
          • Size 2KB
          • SHA256 a50ad1d8d7dea9fe80b3cfa1788af14570ea4488d4f142f5131e8d49f54db811
          • MD5 SHA1 SHA512

          Plymouth

          • Path C:\Users\Admin\AppData\Local\Temp\Plymouth
          • Size 56KB
          • SHA256 f69928281be28923e2052bac547c37a8986286386bc10dc2143e58617ef2920b
          • MD5 SHA1 SHA512 SSDEEP

          memory/2868-35-0x0000000004A20000-0x0000000004A65000-memory.dmp

          memory/2868-36-0x0000000004A20000-0x0000000004A65000-memory.dmp

          memory/2868-37-0x0000000004A20000-0x0000000004A65000-memory.dmp

          memory/2868-38-0x0000000004A20000-0x0000000004A65000-memory.dmp

          memory/2868-39-0x0000000004A20000-0x0000000004A65000-memory.dmp