Analysis

  • max time kernel
    114s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21-11-2022 10:45

General

  • Target

    828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b.dll

  • Size

    111KB

  • MD5

    31aa3bc23c2cdb7ef511108cc593ee70

  • SHA1

    29f2a9485edd516665c5dfc811c3e63af56b8b6c

  • SHA256

    828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b

  • SHA512

    9ed2ddf1d9b17eba646cc69480b9bb609aeaf9ad0af0a7b122ba4f9a4cab84e45fe9b9c19d9f0a12e37fcdfe3427c75289d4bc1132a2bc2b4031fcf44163d91c

  • SSDEEP

    3072:oySFI8LZyHMpj7iefLFaHEYWv4GES6WM1Q:rv8LZyHGDLUHEYOh1cQ

Malware Config

Signatures

  • Ramnit

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

  • Executes dropped EXE 4 IoCs
  • UPX packed file 4 IoCs

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

  • Drops file in System32 directory 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Program crash 2 IoCs
  • Modifies Internet Explorer settings 1 TTPs 41 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 10 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:400
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\828599c57d7111892451deedf5b4be8ccd91a505fb60f2402f4a1f1c49e4609b.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:2508
      • C:\Windows\SysWOW64\rundll32mgr.exe
        C:\Windows\SysWOW64\rundll32mgr.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:1468
        • C:\Program Files (x86)\Microsoft\WaterMark.exe
          "C:\Program Files (x86)\Microsoft\WaterMark.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:672
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\system32\svchost.exe
            5⤵
              PID:2760
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2760 -s 204
                6⤵
                • Program crash
                PID:1536
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:2188
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2188 CREDAT:17410 /prefetch:2
                6⤵
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:424
            • C:\Program Files\Internet Explorer\iexplore.exe
              "C:\Program Files\Internet Explorer\iexplore.exe"
              5⤵
              • Modifies Internet Explorer settings
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:4512
              • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4512 CREDAT:17410 /prefetch:2
                6⤵
                • Modifies Internet Explorer settings
                • Suspicious use of SetWindowsHookEx
                PID:4372
        • C:\Users\Admin\AppData\Local\Temp\hrl79D8.tmp
          C:\Users\Admin\AppData\Local\Temp\hrl79D8.tmp
          3⤵
          • Executes dropped EXE
          • Drops file in System32 directory
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2328
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\hrl79D8.tmp > nul
            4⤵
              PID:4648
      • C:\Windows\SysWOW64\rwnlws.exe
        C:\Windows\SysWOW64\rwnlws.exe
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:4272
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
            PID:4580
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 4580 -s 12
              3⤵
              • Program crash
              PID:2628
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4580 -ip 4580
          1⤵
            PID:4212
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2760 -ip 2760
            1⤵
              PID:3376

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Program Files (x86)\Microsoft\WaterMark.exe

              Filesize

              65KB

              MD5

              849ef19ec0155d79d4fa5bfb5657b106

              SHA1

              eb7e7ff208ecb40d35755d8f36e31e2482166299

              SHA256

              8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

              SHA512

              30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

            • C:\Program Files (x86)\Microsoft\WaterMark.exe

              Filesize

              65KB

              MD5

              849ef19ec0155d79d4fa5bfb5657b106

              SHA1

              eb7e7ff208ecb40d35755d8f36e31e2482166299

              SHA256

              8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

              SHA512

              30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

            • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{146C84F1-6992-11ED-BF5F-FE1968EF3A40}.dat

              Filesize

              4KB

              MD5

              2f368e26589911d3c87560acfa478c21

              SHA1

              b15204b4d37d01af2c9e71311c1c4c48af2edb30

              SHA256

              bf3a425aa09a5929313e66da95863ce279d943a43e7ceeaff9c191479bb237d2

              SHA512

              0be30b1d3d1686a782835af6d8c5a78095392b66bf88ae58f763b4fec0ee58576e5807add4275b27181211fd8ce556f4d19fe5bd8ebcf20f7b19407e1f001e0a

            • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\Recovery\High\Active\RecoveryStore.{1476093C-6992-11ED-BF5F-FE1968EF3A40}.dat

              Filesize

              5KB

              MD5

              0bddb8c9e0b9feb0f1decc2c289cad32

              SHA1

              56306ed029c578c9d285144007c82f0523cb6bc0

              SHA256

              9ab727ef85a1c9d4a5d976cf1fe3baafd9812044174a032f37e4ccb8307652f8

              SHA512

              1b56101bc5c14d9cdb3d5f3c10f06a62d96f6b47612fca9e5447d7167c6997ab729c84569e9ef5c216140770ec2feb556d7dc0a97677713b087754e67dbe8b80

            • C:\Users\Admin\AppData\Local\Temp\hrl79D8.tmp

              Filesize

              36KB

              MD5

              eb4ddda9e715be4be7423fc87e42c1c6

              SHA1

              ec541ac7cfcd55f37758f9a33137e19257307c11

              SHA256

              842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

              SHA512

              8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

            • C:\Users\Admin\AppData\Local\Temp\hrl79D8.tmp

              Filesize

              36KB

              MD5

              eb4ddda9e715be4be7423fc87e42c1c6

              SHA1

              ec541ac7cfcd55f37758f9a33137e19257307c11

              SHA256

              842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

              SHA512

              8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

            • C:\Windows\SysWOW64\rundll32mgr.exe

              Filesize

              65KB

              MD5

              849ef19ec0155d79d4fa5bfb5657b106

              SHA1

              eb7e7ff208ecb40d35755d8f36e31e2482166299

              SHA256

              8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

              SHA512

              30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

            • C:\Windows\SysWOW64\rundll32mgr.exe

              Filesize

              65KB

              MD5

              849ef19ec0155d79d4fa5bfb5657b106

              SHA1

              eb7e7ff208ecb40d35755d8f36e31e2482166299

              SHA256

              8b853e963eab5aa857b640be1d07d605a8bf6dd8bdf8884505b05034bbd87e04

              SHA512

              30384d9943f7eca4efbdcac52d3dd9c14446a2d75dc04ce4047feabe037c5177138f6bdcb055939dcc47608dfb50a54c9676f795d850c9a9de353f90252053a2

            • C:\Windows\SysWOW64\rwnlws.exe

              Filesize

              36KB

              MD5

              eb4ddda9e715be4be7423fc87e42c1c6

              SHA1

              ec541ac7cfcd55f37758f9a33137e19257307c11

              SHA256

              842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

              SHA512

              8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

            • C:\Windows\SysWOW64\rwnlws.exe

              Filesize

              36KB

              MD5

              eb4ddda9e715be4be7423fc87e42c1c6

              SHA1

              ec541ac7cfcd55f37758f9a33137e19257307c11

              SHA256

              842ee71c9e4b9e8b30d8471eb3632f3f4d1b29796a08c0e804d4fcf89a53b1b9

              SHA512

              8b1091a412c81bc9e143f838ab1b589c110e83bee9d5a45c0cdf79aea868e2a31e5713625db513ff74a923732ee1bceafcce8b51d83e79f7d013ca46d7967c4e

            • memory/672-151-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/672-152-0x0000000000560000-0x0000000000581000-memory.dmp

              Filesize

              132KB

            • memory/672-157-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/672-156-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/672-140-0x0000000000000000-mapping.dmp

            • memory/1468-143-0x0000000000400000-0x0000000000421000-memory.dmp

              Filesize

              132KB

            • memory/1468-145-0x0000000000590000-0x00000000005B1000-memory.dmp

              Filesize

              132KB

            • memory/1468-133-0x0000000000000000-mapping.dmp

            • memory/2328-136-0x0000000000000000-mapping.dmp

            • memory/2508-139-0x0000000010000000-0x0000000010020000-memory.dmp

              Filesize

              128KB

            • memory/2508-132-0x0000000000000000-mapping.dmp

            • memory/2760-150-0x0000000000000000-mapping.dmp

            • memory/4580-148-0x0000000000000000-mapping.dmp

            • memory/4580-149-0x0000000000400000-0x000000000040C000-memory.dmp

              Filesize

              48KB

            • memory/4648-153-0x0000000000000000-mapping.dmp