Analysis

  • max time kernel
    15s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2023, 23:11

General

  • Target

    42666e61f8c187a3e1881f9fcf99c508.dll

  • Size

    392KB

  • MD5

    42666e61f8c187a3e1881f9fcf99c508

  • SHA1

    5d92eacf49b4a501190caaa2b62be404bcc56983

  • SHA256

    5c2c5645b8423fefc02c2fc73a0d24a0a18d3258c64a7ba39cbee1691c8f1708

  • SHA512

    c478c719e2d93eea72e462a899e4b7252e554742f563a3845da5725543789870572e72306eb9df345e4596d1a139dc7abd0e84b321edba11ece4eba8e194f9a5

  • SSDEEP

    6144:BdSOvikWQ4/nL4+sEBC6mywRw/YgnX+I9ABFe:fikWbj5sEBCTywiKIiBFe

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 12 IoCs
  • UPX packed file 23 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Suspicious behavior: EnumeratesProcesses 25 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of UnmapMainImage 6 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalService
    1⤵
      PID:976
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k netsvcs
      1⤵
        PID:844
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
        1⤵
          PID:820
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32.exe C:\Users\Admin\AppData\Local\Temp\42666e61f8c187a3e1881f9fcf99c508.dll,#1
          1⤵
          • Loads dropped DLL
          • Drops file in System32 directory
          • Suspicious use of WriteProcessMemory
          PID:2156
          • C:\Windows\SysWOW64\rundll32mgr.exe
            C:\Windows\SysWOW64\rundll32mgr.exe
            2⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Drops file in System32 directory
            • Drops file in Program Files directory
            • Suspicious use of UnmapMainImage
            • Suspicious use of WriteProcessMemory
            PID:2672
        • C:\Windows\system32\rundll32.exe
          rundll32.exe C:\Users\Admin\AppData\Local\Temp\42666e61f8c187a3e1881f9fcf99c508.dll,#1
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:2512
        • C:\Windows\System32\svchost.exe
          C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
          1⤵
            PID:756
          • C:\Windows\system32\svchost.exe
            C:\Windows\system32\svchost.exe -k RPCSS
            1⤵
              PID:680
            • C:\Windows\SysWOW64\svchost.exe
              C:\Windows\system32\svchost.exe
              1⤵
                PID:2920
              • C:\Windows\SysWOW64\svchost.exe
                C:\Windows\system32\svchost.exe
                1⤵
                • Modifies WinLogon for persistence
                • Drops file in System32 directory
                • Drops file in Program Files directory
                PID:1760
              • C:\Windows\SysWOW64\svchost.exe
                C:\Windows\system32\svchost.exe
                1⤵
                  PID:1644
                • C:\Program Files (x86)\Microsoft\WaterMark.exe
                  "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                  1⤵
                  • Executes dropped EXE
                  • Drops file in Program Files directory
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of UnmapMainImage
                  • Suspicious use of WriteProcessMemory
                  PID:1948
                  • C:\Windows\SysWOW64\svchost.exe
                    C:\Windows\system32\svchost.exe
                    2⤵
                      PID:1032
                  • C:\Program Files (x86)\Microsoft\WaterMarkmgr.exe
                    "C:\Program Files (x86)\Microsoft\WaterMarkmgr.exe"
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Drops file in Program Files directory
                    • Suspicious use of UnmapMainImage
                    • Suspicious use of WriteProcessMemory
                    PID:2868
                  • C:\Program Files (x86)\Microsoft\WaterMark.exe
                    "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                    1⤵
                    • Executes dropped EXE
                    • Drops file in Program Files directory
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of UnmapMainImage
                    • Suspicious use of WriteProcessMemory
                    PID:2952
                    • C:\Windows\SysWOW64\svchost.exe
                      C:\Windows\system32\svchost.exe
                      2⤵
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2368
                  • C:\Program Files (x86)\Microsoft\WaterMark.exe
                    "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Drops file in Program Files directory
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    • Suspicious use of UnmapMainImage
                    • Suspicious use of WriteProcessMemory
                    PID:2956
                    • C:\Windows\SysWOW64\svchost.exe
                      C:\Windows\system32\svchost.exe
                      2⤵
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      PID:2452
                  • C:\Windows\SysWOW64\rundll32mgrmgr.exe
                    C:\Windows\SysWOW64\rundll32mgrmgr.exe
                    1⤵
                    • Executes dropped EXE
                    • Loads dropped DLL
                    • Drops file in Program Files directory
                    • Suspicious use of UnmapMainImage
                    • Suspicious use of WriteProcessMemory
                    PID:2844
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k DcomLaunch
                    1⤵
                      PID:604
                    • C:\Windows\system32\lsm.exe
                      C:\Windows\system32\lsm.exe
                      1⤵
                        PID:492
                      • C:\Windows\system32\lsass.exe
                        C:\Windows\system32\lsass.exe
                        1⤵
                          PID:484
                        • C:\Windows\system32\services.exe
                          C:\Windows\system32\services.exe
                          1⤵
                            PID:468
                          • C:\Windows\system32\winlogon.exe
                            winlogon.exe
                            1⤵
                              PID:424
                            • C:\Windows\system32\csrss.exe
                              %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                              1⤵
                                PID:388
                              • C:\Windows\system32\wininit.exe
                                wininit.exe
                                1⤵
                                  PID:376
                                • C:\Windows\system32\csrss.exe
                                  %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
                                  1⤵
                                    PID:340
                                  • C:\Windows\System32\smss.exe
                                    \SystemRoot\System32\smss.exe
                                    1⤵
                                      PID:260

                                    Network

                                          MITRE ATT&CK Enterprise v15

                                          Replay Monitor

                                          Loading Replay Monitor...

                                          Downloads

                                          • memory/1644-492-0x00000000001B0000-0x00000000001B1000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/1760-129-0x00000000000A0000-0x00000000000A1000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/1760-223-0x0000000020010000-0x0000000020022000-memory.dmp

                                            Filesize

                                            72KB

                                          • memory/1760-150-0x0000000020010000-0x0000000020022000-memory.dmp

                                            Filesize

                                            72KB

                                          • memory/1760-137-0x0000000000090000-0x0000000000091000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/1760-133-0x0000000000080000-0x0000000000081000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/1948-156-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/1948-102-0x0000000000160000-0x0000000000161000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/1948-421-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/1948-90-0x0000000000400000-0x0000000000464000-memory.dmp

                                            Filesize

                                            400KB

                                          • memory/1948-99-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2156-1-0x000000006D180000-0x000000006D1E2000-memory.dmp

                                            Filesize

                                            392KB

                                          • memory/2156-2-0x000000006D180000-0x000000006D1E2000-memory.dmp

                                            Filesize

                                            392KB

                                          • memory/2156-4-0x0000000000160000-0x00000000001C4000-memory.dmp

                                            Filesize

                                            400KB

                                          • memory/2452-199-0x0000000077C00000-0x0000000077C01000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2672-51-0x0000000000230000-0x0000000000294000-memory.dmp

                                            Filesize

                                            400KB

                                          • memory/2672-26-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2672-4973-0x0000000000230000-0x0000000000294000-memory.dmp

                                            Filesize

                                            400KB

                                          • memory/2672-20-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2672-24-0x0000000000140000-0x0000000000141000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2672-11-0x0000000000400000-0x0000000000464000-memory.dmp

                                            Filesize

                                            400KB

                                          • memory/2672-14-0x0000000000120000-0x0000000000157000-memory.dmp

                                            Filesize

                                            220KB

                                          • memory/2672-29-0x0000000000120000-0x0000000000157000-memory.dmp

                                            Filesize

                                            220KB

                                          • memory/2672-30-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2672-23-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2672-41-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2844-27-0x0000000000400000-0x0000000000437000-memory.dmp

                                            Filesize

                                            220KB

                                          • memory/2844-32-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2844-37-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2844-34-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2868-87-0x0000000000401000-0x0000000000416000-memory.dmp

                                            Filesize

                                            84KB

                                          • memory/2868-71-0x0000000000400000-0x0000000000437000-memory.dmp

                                            Filesize

                                            220KB

                                          • memory/2868-88-0x0000000000700000-0x0000000000764000-memory.dmp

                                            Filesize

                                            400KB

                                          • memory/2868-82-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2920-103-0x0000000000080000-0x0000000000081000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2920-153-0x0000000020010000-0x0000000020022000-memory.dmp

                                            Filesize

                                            72KB

                                          • memory/2920-984-0x0000000000200000-0x0000000000201000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2920-97-0x0000000020010000-0x0000000020022000-memory.dmp

                                            Filesize

                                            72KB

                                          • memory/2920-463-0x0000000077C00000-0x0000000077C01000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2952-443-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2952-115-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2952-164-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2956-67-0x0000000000120000-0x0000000000157000-memory.dmp

                                            Filesize

                                            220KB

                                          • memory/2956-403-0x0000000000360000-0x0000000000361000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2956-405-0x00000000001B0000-0x00000000001B1000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2956-411-0x0000000077C00000-0x0000000077C01000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2956-63-0x0000000000120000-0x0000000000157000-memory.dmp

                                            Filesize

                                            220KB

                                          • memory/2956-423-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2956-84-0x00000000001A0000-0x00000000001A1000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2956-91-0x0000000077BFF000-0x0000000077C00000-memory.dmp

                                            Filesize

                                            4KB

                                          • memory/2956-145-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2956-86-0x0000000000400000-0x0000000000421000-memory.dmp

                                            Filesize

                                            132KB

                                          • memory/2956-54-0x0000000000400000-0x0000000000464000-memory.dmp

                                            Filesize

                                            400KB