Analysis

  • max time kernel
    151s
  • max time network
    166s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:52

General

  • Target

    ca636974a40a8a76fbdc38fef343fe44980a69b6283e00a01cdb7ce32b42bebf.exe

  • Size

    445KB

  • MD5

    840a4a8c1768b80d1fda0993406a5535

  • SHA1

    70e70d59bbbe5337fa04f4b9d0efddf9dcda3254

  • SHA256

    ca636974a40a8a76fbdc38fef343fe44980a69b6283e00a01cdb7ce32b42bebf

  • SHA512

    c2a57cb6837646635e506a256d0116fe124b70a10555c87198646332e0840c2edc35b27c862efef65c7d6d71b145d3b709100e617035f32ebb0127248f973b15

  • SSDEEP

    12288:pEOa0BaqRVJmmtR2dPyOvHVM8Uyx+lUlFj1N02liqwF00b2:pba0wI7mxdKOPKrU+lUllirFBb2

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 directory 5 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ca636974a40a8a76fbdc38fef343fe44980a69b6283e00a01cdb7ce32b42bebf.exe
    "C:\Users\Admin\AppData\Local\Temp\ca636974a40a8a76fbdc38fef343fe44980a69b6283e00a01cdb7ce32b42bebf.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1928
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3208
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:860
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:5044
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1420
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4956
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2160
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2324
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2828
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:3536
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1980
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4148
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:3664
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3724

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsxB58B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f012a34b4794524e4e99e4f3eadddeb

            SHA1

            ba12935e9ff1566058418f8ae7d5e04b3dd6df29

            SHA256

            c532bad65016ea7d7fd4140b03c0bf02780075e1007dd5c1d90a11a1663a8f82

            SHA512

            ace2793f145f6359fa38dec8c88aa195dd0a74c65ad68ba59592308d00326cf58ed637b7dcf4974f54070f4cbe1ee9c933e54e1fba9d3f920760c2fe93a782f5

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f012a34b4794524e4e99e4f3eadddeb

            SHA1

            ba12935e9ff1566058418f8ae7d5e04b3dd6df29

            SHA256

            c532bad65016ea7d7fd4140b03c0bf02780075e1007dd5c1d90a11a1663a8f82

            SHA512

            ace2793f145f6359fa38dec8c88aa195dd0a74c65ad68ba59592308d00326cf58ed637b7dcf4974f54070f4cbe1ee9c933e54e1fba9d3f920760c2fe93a782f5

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f012a34b4794524e4e99e4f3eadddeb

            SHA1

            ba12935e9ff1566058418f8ae7d5e04b3dd6df29

            SHA256

            c532bad65016ea7d7fd4140b03c0bf02780075e1007dd5c1d90a11a1663a8f82

            SHA512

            ace2793f145f6359fa38dec8c88aa195dd0a74c65ad68ba59592308d00326cf58ed637b7dcf4974f54070f4cbe1ee9c933e54e1fba9d3f920760c2fe93a782f5

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            9f012a34b4794524e4e99e4f3eadddeb

            SHA1

            ba12935e9ff1566058418f8ae7d5e04b3dd6df29

            SHA256

            c532bad65016ea7d7fd4140b03c0bf02780075e1007dd5c1d90a11a1663a8f82

            SHA512

            ace2793f145f6359fa38dec8c88aa195dd0a74c65ad68ba59592308d00326cf58ed637b7dcf4974f54070f4cbe1ee9c933e54e1fba9d3f920760c2fe93a782f5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8e4d6a790a4ddbd0280b9a21a1dba3d5

            SHA1

            9ea978447a7f6c0c8b26a7295b629eaafaa8bf48

            SHA256

            4e2c442987096cd5404cec52a25642407c6ae6baf1afc73c84c191e599e4973f

            SHA512

            64144c2fcf1ac1277d17af105f9f6326a131c255669e9727a51fd70753fa907b89f5fbf9eaaf4198dd2e103d5ecb2865fb5662815ca4b1c6ef7f19a30e251069

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8e4d6a790a4ddbd0280b9a21a1dba3d5

            SHA1

            9ea978447a7f6c0c8b26a7295b629eaafaa8bf48

            SHA256

            4e2c442987096cd5404cec52a25642407c6ae6baf1afc73c84c191e599e4973f

            SHA512

            64144c2fcf1ac1277d17af105f9f6326a131c255669e9727a51fd70753fa907b89f5fbf9eaaf4198dd2e103d5ecb2865fb5662815ca4b1c6ef7f19a30e251069

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            8e4d6a790a4ddbd0280b9a21a1dba3d5

            SHA1

            9ea978447a7f6c0c8b26a7295b629eaafaa8bf48

            SHA256

            4e2c442987096cd5404cec52a25642407c6ae6baf1afc73c84c191e599e4973f

            SHA512

            64144c2fcf1ac1277d17af105f9f6326a131c255669e9727a51fd70753fa907b89f5fbf9eaaf4198dd2e103d5ecb2865fb5662815ca4b1c6ef7f19a30e251069

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d41f02a360ddd011bb82c6a73cdc647

            SHA1

            53bfaa25b06120d110f0647ad2cadee18bc4d72c

            SHA256

            6aeea173d6f2de9e6dc26b9bd6457f16f3561a89b7479e55d505e85cf3145132

            SHA512

            5abe813be81ee9395a6e2a375af2b5974fd214d76b77f78914760a1ae8b1395aef9b93e0a904243608d117c6781c57af3b16226d2d6d28114b89d1df184adff4

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4d41f02a360ddd011bb82c6a73cdc647

            SHA1

            53bfaa25b06120d110f0647ad2cadee18bc4d72c

            SHA256

            6aeea173d6f2de9e6dc26b9bd6457f16f3561a89b7479e55d505e85cf3145132

            SHA512

            5abe813be81ee9395a6e2a375af2b5974fd214d76b77f78914760a1ae8b1395aef9b93e0a904243608d117c6781c57af3b16226d2d6d28114b89d1df184adff4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9b59ef55106f28098cd386ff7d8c861a

            SHA1

            c89ceade72776e527ef399c5e80133bbe591c149

            SHA256

            0d733914c79c6c9c1625cb483e7efce3134a201dbf6a038f87ed685c402ccfe0

            SHA512

            6ff529f7505c150e6812ca1d6ca2ee810da5596dfe4dd48fcc8c0eba2cd27c3d26abfa66bd1ab06af1d42d9ff7e7beafdc52873f3846360a8d65cd801fe0fb9d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9b59ef55106f28098cd386ff7d8c861a

            SHA1

            c89ceade72776e527ef399c5e80133bbe591c149

            SHA256

            0d733914c79c6c9c1625cb483e7efce3134a201dbf6a038f87ed685c402ccfe0

            SHA512

            6ff529f7505c150e6812ca1d6ca2ee810da5596dfe4dd48fcc8c0eba2cd27c3d26abfa66bd1ab06af1d42d9ff7e7beafdc52873f3846360a8d65cd801fe0fb9d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            9b59ef55106f28098cd386ff7d8c861a

            SHA1

            c89ceade72776e527ef399c5e80133bbe591c149

            SHA256

            0d733914c79c6c9c1625cb483e7efce3134a201dbf6a038f87ed685c402ccfe0

            SHA512

            6ff529f7505c150e6812ca1d6ca2ee810da5596dfe4dd48fcc8c0eba2cd27c3d26abfa66bd1ab06af1d42d9ff7e7beafdc52873f3846360a8d65cd801fe0fb9d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a1bf28ae24a9e43836a7e2ab189eb793

            SHA1

            cac5b081e9afa4222d013c7d7f4871f5310129bf

            SHA256

            fe362ec8fba52b3a6295fbb480ea0beadbf9772579dc17210bfa9b64fdcf915f

            SHA512

            c18c385aa4ea72e96ab911af8eaba91cd0c4ecb9ae01e5e866d0c6e2a0451433149b2c47dc2524aceecd48b3886bd6da222123689cd3ca3fa45d27c6db23e846

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a1bf28ae24a9e43836a7e2ab189eb793

            SHA1

            cac5b081e9afa4222d013c7d7f4871f5310129bf

            SHA256

            fe362ec8fba52b3a6295fbb480ea0beadbf9772579dc17210bfa9b64fdcf915f

            SHA512

            c18c385aa4ea72e96ab911af8eaba91cd0c4ecb9ae01e5e866d0c6e2a0451433149b2c47dc2524aceecd48b3886bd6da222123689cd3ca3fa45d27c6db23e846

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            a1bf28ae24a9e43836a7e2ab189eb793

            SHA1

            cac5b081e9afa4222d013c7d7f4871f5310129bf

            SHA256

            fe362ec8fba52b3a6295fbb480ea0beadbf9772579dc17210bfa9b64fdcf915f

            SHA512

            c18c385aa4ea72e96ab911af8eaba91cd0c4ecb9ae01e5e866d0c6e2a0451433149b2c47dc2524aceecd48b3886bd6da222123689cd3ca3fa45d27c6db23e846

          • memory/860-136-0x0000000000000000-mapping.dmp

          • memory/1420-140-0x0000000000000000-mapping.dmp

          • memory/1980-164-0x0000000000000000-mapping.dmp

          • memory/2160-146-0x0000000000000000-mapping.dmp

          • memory/2324-152-0x0000000000000000-mapping.dmp

          • memory/2828-157-0x0000000000000000-mapping.dmp

          • memory/3208-135-0x0000000000000000-mapping.dmp

          • memory/3536-158-0x0000000000000000-mapping.dmp

          • memory/4148-165-0x0000000000000000-mapping.dmp

          • memory/4956-141-0x0000000000000000-mapping.dmp

          • memory/5044-139-0x0000000000000000-mapping.dmp