Analysis

  • max time kernel
    19s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2023, 04:07

General

  • Target

    277b80877fc2effdede80a15a0a43db1.exe

  • Size

    167KB

  • MD5

    277b80877fc2effdede80a15a0a43db1

  • SHA1

    08abab37c0371f718cb5b6fde5402cf9e5d9eabc

  • SHA256

    4f8168dce8d3e492a35717c1550ccb86dbeab0e1a4e32963f5f8eb73bfdbeb1c

  • SHA512

    3336561ea5afea5b099a7fbc27808fc13052ea0b2694423b5be1fb05101321cd471a1da241626b8b915842d42f8d83e1152e07b7d12ed76bbc7736ba6a046e90

  • SSDEEP

    3072:63JBjl+LRzx8Sj3yTI9Uo66i2UmmCBl8PMFsaDSxKChgtCrWJ7Y:0JESSj7966dBLfDSxKCA7

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 2 IoCs
  • Loads dropped DLL 4 IoCs
  • UPX packed file 6 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\lsass.exe
    C:\Windows\system32\lsass.exe
    1⤵
      PID:492
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
      1⤵
        PID:764
      • C:\Windows\system32\sppsvc.exe
        C:\Windows\system32\sppsvc.exe
        1⤵
          PID:2088
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
          1⤵
            PID:2988
          • C:\Windows\system32\DllHost.exe
            C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
            1⤵
              PID:640
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
              1⤵
                PID:1184
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                  PID:1168
                  • C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1.exe
                    "C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1.exe"
                    2⤵
                    • Loads dropped DLL
                    • Suspicious use of WriteProcessMemory
                    PID:1636
                • C:\Windows\system32\taskhost.exe
                  "taskhost.exe"
                  1⤵
                    PID:1100
                  • C:\Windows\system32\Dwm.exe
                    "C:\Windows\system32\Dwm.exe"
                    1⤵
                      PID:1092
                    • C:\Windows\System32\spoolsv.exe
                      C:\Windows\System32\spoolsv.exe
                      1⤵
                        PID:1084
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k NetworkService
                        1⤵
                          PID:296
                        • C:\Windows\system32\svchost.exe
                          C:\Windows\system32\svchost.exe -k LocalService
                          1⤵
                            PID:988
                          • C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1Srv.exe
                            C:\Users\Admin\AppData\Local\Temp\277b80877fc2effdede80a15a0a43db1Srv.exe
                            1⤵
                            • Executes dropped EXE
                            • Loads dropped DLL
                            • Drops file in Program Files directory
                            • Suspicious use of WriteProcessMemory
                            PID:2388
                            • C:\Program Files (x86)\Microsoft\WaterMark.exe
                              "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                              2⤵
                              • Executes dropped EXE
                              • Suspicious behavior: EnumeratesProcesses
                              • Suspicious use of AdjustPrivilegeToken
                              • Suspicious use of WriteProcessMemory
                              PID:3000
                              • C:\Windows\SysWOW64\svchost.exe
                                C:\Windows\system32\svchost.exe
                                3⤵
                                • Modifies WinLogon for persistence
                                • Drops file in System32 directory
                                • Drops file in Program Files directory
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2992
                              • C:\Windows\SysWOW64\svchost.exe
                                C:\Windows\system32\svchost.exe
                                3⤵
                                • Suspicious behavior: EnumeratesProcesses
                                • Suspicious use of AdjustPrivilegeToken
                                • Suspicious use of WriteProcessMemory
                                PID:1940
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k netsvcs
                            1⤵
                              PID:872
                            • C:\Windows\System32\svchost.exe
                              C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                              1⤵
                                PID:832
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k RPCSS
                                1⤵
                                  PID:692
                                • C:\Windows\system32\svchost.exe
                                  C:\Windows\system32\svchost.exe -k DcomLaunch
                                  1⤵
                                    PID:608
                                  • C:\Windows\system32\lsm.exe
                                    C:\Windows\system32\lsm.exe
                                    1⤵
                                      PID:500
                                    • C:\Windows\system32\services.exe
                                      C:\Windows\system32\services.exe
                                      1⤵
                                        PID:484
                                      • C:\Windows\system32\winlogon.exe
                                        winlogon.exe
                                        1⤵
                                          PID:436
                                        • 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:396
                                          • C:\Windows\system32\wininit.exe
                                            wininit.exe
                                            1⤵
                                              PID:388
                                            • 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/1636-4-0x0000000000230000-0x0000000000271000-memory.dmp

                                                  Filesize

                                                  260KB

                                                • memory/1636-12-0x0000000000230000-0x0000000000271000-memory.dmp

                                                  Filesize

                                                  260KB

                                                • memory/1636-13-0x0000000000400000-0x000000000042F000-memory.dmp

                                                  Filesize

                                                  188KB

                                                • memory/1636-1-0x0000000000400000-0x000000000042F000-memory.dmp

                                                  Filesize

                                                  188KB

                                                • memory/1940-67-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1940-69-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1940-68-0x00000000001B0000-0x00000000001B1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/1940-66-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1940-65-0x00000000001A0000-0x00000000001A1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/1940-64-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1940-102-0x0000000077710000-0x0000000077711000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/1940-53-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/1940-60-0x0000000020010000-0x000000002001B000-memory.dmp

                                                  Filesize

                                                  44KB

                                                • memory/2388-16-0x0000000000400000-0x0000000000441000-memory.dmp

                                                  Filesize

                                                  260KB

                                                • memory/2388-10-0x0000000000400000-0x0000000000441000-memory.dmp

                                                  Filesize

                                                  260KB

                                                • memory/2388-11-0x0000000000220000-0x0000000000221000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-40-0x00000000000A0000-0x00000000000A1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-30-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/2992-32-0x0000000000080000-0x0000000000081000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-36-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/2992-428-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/2992-43-0x0000000000080000-0x0000000000081000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-44-0x0000000000090000-0x0000000000091000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-284-0x0000000077710000-0x0000000077711000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-283-0x0000000000240000-0x0000000000241000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/2992-49-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/2992-42-0x0000000020010000-0x0000000020021000-memory.dmp

                                                  Filesize

                                                  68KB

                                                • memory/3000-28-0x000000007770F000-0x0000000077710000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-252-0x0000000077710000-0x0000000077711000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-250-0x00000000003C0000-0x00000000003C1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-248-0x00000000003F0000-0x00000000003F1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-26-0x00000000003B0000-0x00000000003B1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-59-0x000000007770F000-0x0000000077710000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-51-0x00000000003C0000-0x00000000003C1000-memory.dmp

                                                  Filesize

                                                  4KB

                                                • memory/3000-285-0x0000000000400000-0x0000000000441000-memory.dmp

                                                  Filesize

                                                  260KB

                                                • memory/3000-27-0x0000000000400000-0x0000000000441000-memory.dmp

                                                  Filesize

                                                  260KB

                                                • memory/3000-431-0x0000000000400000-0x0000000000441000-memory.dmp

                                                  Filesize

                                                  260KB