Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    05-01-2024 12:01

General

  • Target

    38a3b3b4a06fe3d8e43d0d4348dff9e7.dll

  • Size

    166KB

  • MD5

    38a3b3b4a06fe3d8e43d0d4348dff9e7

  • SHA1

    ee0eb512b443c84f5dd69c8b2ed0066815bcc9c4

  • SHA256

    279dc6f915f7513aa1cd00910f1a2c7541021d9bb9f2f5f67592a8ca1f002bc3

  • SHA512

    d5a97ef4e54e4924bdef7a40a1f35ee59b9b8dd946317a168874398f775bca7a2a1aa70ff45049028ea16cac50a7daed1507e74ad5d15135d60be4a702720ae8

  • SSDEEP

    1536:05lTUKCYmCgV5bT/2d1QYesG+sxFm2mEgW+YBOYYtV/rerTK:KTU56gVxj27NeUuFm1byOYUNq6

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 11 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 36 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\winlogon.exe
    winlogon.exe
    1⤵
      PID:420
    • 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:384
      • C:\Windows\system32\wininit.exe
        wininit.exe
        1⤵
          PID:372
          • C:\Windows\system32\services.exe
            C:\Windows\system32\services.exe
            2⤵
              PID:464
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k netsvcs
                3⤵
                  PID:852
                  • C:\Windows\system32\wbem\WMIADAP.EXE
                    wmiadap.exe /F /T /R
                    4⤵
                      PID:320
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k NetworkService
                    3⤵
                      PID:272
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork
                      3⤵
                        PID:1048
                      • C:\Windows\system32\taskhost.exe
                        "taskhost.exe"
                        3⤵
                          PID:1132
                        • C:\Windows\system32\sppsvc.exe
                          C:\Windows\system32\sppsvc.exe
                          3⤵
                            PID:1500
                          • C:\Windows\system32\svchost.exe
                            C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation
                            3⤵
                              PID:2408
                            • C:\Windows\System32\spoolsv.exe
                              C:\Windows\System32\spoolsv.exe
                              3⤵
                                PID:388
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k LocalService
                                3⤵
                                  PID:976
                                • C:\Windows\System32\svchost.exe
                                  C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
                                  3⤵
                                    PID:824
                                  • C:\Windows\System32\svchost.exe
                                    C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
                                    3⤵
                                      PID:760
                                    • C:\Windows\system32\svchost.exe
                                      C:\Windows\system32\svchost.exe -k RPCSS
                                      3⤵
                                        PID:680
                                      • C:\Windows\system32\svchost.exe
                                        C:\Windows\system32\svchost.exe -k DcomLaunch
                                        3⤵
                                          PID:604
                                          • C:\Windows\system32\wbem\wmiprvse.exe
                                            C:\Windows\system32\wbem\wmiprvse.exe -Embedding
                                            4⤵
                                              PID:2760
                                        • C:\Windows\system32\lsass.exe
                                          C:\Windows\system32\lsass.exe
                                          2⤵
                                            PID:480
                                          • C:\Windows\system32\lsm.exe
                                            C:\Windows\system32\lsm.exe
                                            2⤵
                                              PID:488
                                          • 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:336
                                            • C:\Windows\System32\smss.exe
                                              \SystemRoot\System32\smss.exe
                                              1⤵
                                                PID:260
                                              • C:\Windows\system32\DllHost.exe
                                                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                                                1⤵
                                                  PID:2480
                                                • C:\Windows\Explorer.EXE
                                                  C:\Windows\Explorer.EXE
                                                  1⤵
                                                    PID:1248
                                                    • C:\Windows\system32\regsvr32.exe
                                                      regsvr32 /s C:\Users\Admin\AppData\Local\Temp\38a3b3b4a06fe3d8e43d0d4348dff9e7.dll
                                                      2⤵
                                                      • Suspicious use of WriteProcessMemory
                                                      PID:2628
                                                      • C:\Windows\SysWOW64\regsvr32.exe
                                                        /s C:\Users\Admin\AppData\Local\Temp\38a3b3b4a06fe3d8e43d0d4348dff9e7.dll
                                                        3⤵
                                                        • Loads dropped DLL
                                                        • Drops file in System32 directory
                                                        • Suspicious use of WriteProcessMemory
                                                        PID:1736
                                                        • C:\Windows\SysWOW64\regsvr32mgr.exe
                                                          C:\Windows\SysWOW64\regsvr32mgr.exe
                                                          4⤵
                                                          • Executes dropped EXE
                                                          • Loads dropped DLL
                                                          • Suspicious use of UnmapMainImage
                                                          • Suspicious use of WriteProcessMemory
                                                          PID:1972
                                                          • C:\Program Files (x86)\Microsoft\WaterMark.exe
                                                            "C:\Program Files (x86)\Microsoft\WaterMark.exe"
                                                            5⤵
                                                            • Executes dropped EXE
                                                            • Suspicious behavior: EnumeratesProcesses
                                                            • Suspicious use of AdjustPrivilegeToken
                                                            • Suspicious use of UnmapMainImage
                                                            • Suspicious use of WriteProcessMemory
                                                            PID:2856
                                                            • C:\Windows\SysWOW64\svchost.exe
                                                              C:\Windows\system32\svchost.exe
                                                              6⤵
                                                              • Suspicious behavior: EnumeratesProcesses
                                                              • Suspicious use of AdjustPrivilegeToken
                                                              • Suspicious use of WriteProcessMemory
                                                              PID:1540
                                                  • C:\Windows\system32\Dwm.exe
                                                    "C:\Windows\system32\Dwm.exe"
                                                    1⤵
                                                      PID:1228
                                                    • 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:2848

                                                    Network

                                                    MITRE ATT&CK Enterprise v15

                                                    Replay Monitor

                                                    Loading Replay Monitor...

                                                    Downloads

                                                    • C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.core.ssl.feature_1.0.0.v20140827-1444\epl-v10.html

                                                      Filesize

                                                      206KB

                                                      MD5

                                                      a60857f8ec3026bbe082368fffd701de

                                                      SHA1

                                                      a5a005b8116c0a6e4a764d03e06163637eb96202

                                                      SHA256

                                                      23da9d8debbd01f01a14801c1eea170573374c146194dff48985ea5ec0b2ed19

                                                      SHA512

                                                      a8ff1bc4b4a438efee75d457fd2dcd018c0251fd05fe285713b5f052a1dddea149a79b07372cb81ac9e80039712b446b3a026bef783718e4fceef79b575a2c40

                                                    • C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.core.ssl.feature_1.0.0.v20140827-1444\license.html

                                                      Filesize

                                                      202KB

                                                      MD5

                                                      3ee298e467e24dd93c20c2e31187b263

                                                      SHA1

                                                      d1610bf7ee1b574f569f9525f6b9eeb5ccad7ef0

                                                      SHA256

                                                      bfcfa8e04e02b8da92e05bbdfc5e5b3f5d2a053feeab5730cd743ce10eff1b0a

                                                      SHA512

                                                      2d9c19e5350db1571c9f78d955fbbe35e11f2b9c2b99ec32b67205c0befb6ca5a8e2da0fb021a474370bb95f3fb9aee8f7507561cedb400b8113099f53a61e7e

                                                    • C:\Windows\SysWOW64\regsvr32mgr.exe

                                                      Filesize

                                                      96KB

                                                      MD5

                                                      8c51fd9d6daa7b6137634de19a49452c

                                                      SHA1

                                                      db2a11cca434bacad2bf42adeecae38e99cf64f8

                                                      SHA256

                                                      528d190fc376cff62a83391a5ba10ae4ef0c02bedabd0360274ddc2784e11da3

                                                      SHA512

                                                      b93dd6c86d0618798a11dbaa2ded7dac659f6516ca4a87da7297601c27f340fffa4126a852c257654d562529273d8a3f639ec020ab54b879c68226deae549837

                                                    • \Windows\SysWOW64\regsvr32mgr.exe

                                                      Filesize

                                                      45KB

                                                      MD5

                                                      4dbfb7d7801b52e4750cba8400b611ad

                                                      SHA1

                                                      01e1e56149cff08116b1c52a5185ffd1f6d81bf8

                                                      SHA256

                                                      485fa62be8876f568df419b7ed40e0a855f4d29bbd9245fa5f3afd14c9c652fb

                                                      SHA512

                                                      382aca2ee5b923f108e607ff45bcbf749292cdb1786d12751e80042eaf846038acbf88c8783fa91fb00b938ace0df640b642ce4bd78dc31463eb9610f310ac4c

                                                    • \Windows\SysWOW64\regsvr32mgr.exe

                                                      Filesize

                                                      12KB

                                                      MD5

                                                      4b7508d0f75b440220f537739f9f04e8

                                                      SHA1

                                                      4446fea4bcbc2c61554735e0294c8fa66268e056

                                                      SHA256

                                                      a3c1bb8968b4ff8fad2d6e367497cbb008aeeec8af52804fe7b950fbe53417eb

                                                      SHA512

                                                      a8faa8a573e8b5b6b79f65cccbe2059fa19eec01cc0be6c410a0cbbc239100852d04e87e6d05ed33bc5c373907ca932a4ed09e6df5a780fe8528eef8fb7eb8da

                                                    • memory/1540-92-0x0000000020010000-0x000000002001B000-memory.dmp

                                                      Filesize

                                                      44KB

                                                    • memory/1540-86-0x0000000020010000-0x000000002001B000-memory.dmp

                                                      Filesize

                                                      44KB

                                                    • memory/1540-87-0x0000000000150000-0x0000000000151000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/1540-91-0x0000000000160000-0x0000000000161000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/1540-90-0x00000000771B0000-0x00000000771B1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/1540-89-0x0000000020010000-0x000000002001B000-memory.dmp

                                                      Filesize

                                                      44KB

                                                    • memory/1540-88-0x0000000020010000-0x000000002001B000-memory.dmp

                                                      Filesize

                                                      44KB

                                                    • memory/1540-82-0x0000000020010000-0x000000002001B000-memory.dmp

                                                      Filesize

                                                      44KB

                                                    • memory/1540-73-0x0000000020010000-0x000000002001B000-memory.dmp

                                                      Filesize

                                                      44KB

                                                    • memory/1736-3-0x0000000000400000-0x0000000000435000-memory.dmp

                                                      Filesize

                                                      212KB

                                                    • memory/1736-1-0x00000000743E0000-0x000000007440C000-memory.dmp

                                                      Filesize

                                                      176KB

                                                    • memory/1736-10-0x0000000000400000-0x0000000000435000-memory.dmp

                                                      Filesize

                                                      212KB

                                                    • memory/1972-17-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-30-0x0000000000050000-0x0000000000085000-memory.dmp

                                                      Filesize

                                                      212KB

                                                    • memory/1972-12-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-11-0x0000000000400000-0x0000000000435000-memory.dmp

                                                      Filesize

                                                      212KB

                                                    • memory/1972-22-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-18-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-16-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-15-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-14-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/1972-13-0x00000000001C0000-0x00000000001C1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2848-47-0x0000000000080000-0x0000000000081000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2848-60-0x0000000000090000-0x0000000000091000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2848-62-0x0000000020010000-0x0000000020022000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/2848-67-0x0000000020010000-0x0000000020022000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/2848-56-0x0000000020010000-0x0000000020022000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/2848-54-0x00000000000A0000-0x00000000000A1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2848-45-0x0000000020010000-0x0000000020022000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/2848-594-0x0000000020010000-0x0000000020022000-memory.dmp

                                                      Filesize

                                                      72KB

                                                    • memory/2848-55-0x0000000000080000-0x0000000000081000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-71-0x00000000001B0000-0x00000000001B1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-33-0x0000000000400000-0x0000000000435000-memory.dmp

                                                      Filesize

                                                      212KB

                                                    • memory/2856-264-0x0000000000360000-0x0000000000361000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-267-0x00000000001B0000-0x00000000001B1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-269-0x00000000771B0000-0x00000000771B1000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-272-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/2856-420-0x00000000771AF000-0x00000000771B0000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-423-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/2856-41-0x0000000000400000-0x0000000000421000-memory.dmp

                                                      Filesize

                                                      132KB

                                                    • memory/2856-43-0x00000000771AF000-0x00000000771B0000-memory.dmp

                                                      Filesize

                                                      4KB

                                                    • memory/2856-42-0x00000000001A0000-0x00000000001A1000-memory.dmp

                                                      Filesize

                                                      4KB