Analysis

  • max time kernel
    41s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:29

General

  • Target

    3551894fd87a13c726fda6c9441469d520e96528b7e9dd48e4641c621ccda23c.exe

  • Size

    602KB

  • MD5

    5d653ba83db753d15124be4fe59682e9

  • SHA1

    a0b8ade5be432b22c7ed1188285fe39b26325404

  • SHA256

    3551894fd87a13c726fda6c9441469d520e96528b7e9dd48e4641c621ccda23c

  • SHA512

    78b415d402f3d2191f7088c3b2e4953ae07d2e060ed5b54e31ced0eb033a79e74d62d25d6fefa21ecb64136a07446bbe1dcc6c1b43d02419fcbded5780d391c6

  • SSDEEP

    12288:UIny5DYTWVXh9m8vjg5V3uOI2jZAzLGIB0JSC+q7M8T:SUTWw205VJjZAzqI9JqA+

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 13 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.

  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 50 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3551894fd87a13c726fda6c9441469d520e96528b7e9dd48e4641c621ccda23c.exe
    "C:\Users\Admin\AppData\Local\Temp\3551894fd87a13c726fda6c9441469d520e96528b7e9dd48e4641c621ccda23c.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:1884
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1612
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1768
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:972
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1740
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1616
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1560
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1816
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1068
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1348
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1892
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:884
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1172
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:604

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            daa1d038cc23efae942f98621f190256

            SHA1

            c55f5319d4809e2818923dcd1f044acd6bbbd4ac

            SHA256

            20bd624400a0ed50c491dab830afbe1b4ddb355fbcb06589e41250f55cf51c24

            SHA512

            ef17c0825d763f19642a1e79d6c4d776b267bf9cf762222cbd72639f2d64a23b860eacddce7698400e102412cc2ca5eed77d74b1bbb9108a2fde678b3df4064d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            413ccfedf1bd5c885dc5562c961a87f6

            SHA1

            56861ad29f237766cefe26301f414ceec837a564

            SHA256

            e84da571dba8b569ed24ee58a72e3e68b4117ac493a443cba4f591478ab68fca

            SHA512

            009356269042a719308b2151b989b927d182e09fe1cd4eedf53a2b45b2847399fd05d97c81ec04e97b7422e936695c9f4e2d70ed518d915e3d94c5a9aa6cfd85

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            abe2d8bda9226deb478467d54c576e99

            SHA1

            6962674c765a8f09cbbdff08c3a8648bba060dd9

            SHA256

            8f8ebe4ed88c0d7882e47a72c20d87523101b2f71f44cbd5ec29c5d7e208923a

            SHA512

            03aa84862831f64476c03c7274594b868c10ae0c980011b2daa1b9970e8cf99c836b544b9b59b52f06bd01e8732ba636260cefcf573a1e39d2c59bd3cac24211

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            797430e73af3b6bc528190a4abfcc2a2

            SHA1

            b9bda6728808038d9ccdc7d00ca69526c8a9d253

            SHA256

            6322ecfb13f80dddaafd1e9aba1f4eed2c0d5f0b43a1536d512122dbafba8a32

            SHA512

            a4d7c93969de86a9739ee2f0620db62897734c771dce01e42e235f54bcfb874eefb0cf99164a18ec1180e2201b37d6d5cdb18676d794c92818d124a6c93d9d1f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            797430e73af3b6bc528190a4abfcc2a2

            SHA1

            b9bda6728808038d9ccdc7d00ca69526c8a9d253

            SHA256

            6322ecfb13f80dddaafd1e9aba1f4eed2c0d5f0b43a1536d512122dbafba8a32

            SHA512

            a4d7c93969de86a9739ee2f0620db62897734c771dce01e42e235f54bcfb874eefb0cf99164a18ec1180e2201b37d6d5cdb18676d794c92818d124a6c93d9d1f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2a7baa8793b1f632db66fa41ba2ebeec

            SHA1

            09f3aa835f87195f32d7eff65d1c0377a0a7d87c

            SHA256

            9710ca8868337c7c4c268f26baa4acfd89e16bd9cc5f84474b02c2b04b920c4c

            SHA512

            3c6a368faed67920df7b2e3a9a55bb6d42d4db8777f9c04b590746df22f62bfb6ec8d13a0bbc31e9394fdb267b0ec6a32eed35c7bd71c6a3cafaef75ab87a17b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2a7baa8793b1f632db66fa41ba2ebeec

            SHA1

            09f3aa835f87195f32d7eff65d1c0377a0a7d87c

            SHA256

            9710ca8868337c7c4c268f26baa4acfd89e16bd9cc5f84474b02c2b04b920c4c

            SHA512

            3c6a368faed67920df7b2e3a9a55bb6d42d4db8777f9c04b590746df22f62bfb6ec8d13a0bbc31e9394fdb267b0ec6a32eed35c7bd71c6a3cafaef75ab87a17b

          • \Users\Admin\AppData\Local\Temp\nso1900.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso1900.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1900.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1900.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1900.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            daa1d038cc23efae942f98621f190256

            SHA1

            c55f5319d4809e2818923dcd1f044acd6bbbd4ac

            SHA256

            20bd624400a0ed50c491dab830afbe1b4ddb355fbcb06589e41250f55cf51c24

            SHA512

            ef17c0825d763f19642a1e79d6c4d776b267bf9cf762222cbd72639f2d64a23b860eacddce7698400e102412cc2ca5eed77d74b1bbb9108a2fde678b3df4064d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            daa1d038cc23efae942f98621f190256

            SHA1

            c55f5319d4809e2818923dcd1f044acd6bbbd4ac

            SHA256

            20bd624400a0ed50c491dab830afbe1b4ddb355fbcb06589e41250f55cf51c24

            SHA512

            ef17c0825d763f19642a1e79d6c4d776b267bf9cf762222cbd72639f2d64a23b860eacddce7698400e102412cc2ca5eed77d74b1bbb9108a2fde678b3df4064d

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            daa1d038cc23efae942f98621f190256

            SHA1

            c55f5319d4809e2818923dcd1f044acd6bbbd4ac

            SHA256

            20bd624400a0ed50c491dab830afbe1b4ddb355fbcb06589e41250f55cf51c24

            SHA512

            ef17c0825d763f19642a1e79d6c4d776b267bf9cf762222cbd72639f2d64a23b860eacddce7698400e102412cc2ca5eed77d74b1bbb9108a2fde678b3df4064d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            413ccfedf1bd5c885dc5562c961a87f6

            SHA1

            56861ad29f237766cefe26301f414ceec837a564

            SHA256

            e84da571dba8b569ed24ee58a72e3e68b4117ac493a443cba4f591478ab68fca

            SHA512

            009356269042a719308b2151b989b927d182e09fe1cd4eedf53a2b45b2847399fd05d97c81ec04e97b7422e936695c9f4e2d70ed518d915e3d94c5a9aa6cfd85

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            413ccfedf1bd5c885dc5562c961a87f6

            SHA1

            56861ad29f237766cefe26301f414ceec837a564

            SHA256

            e84da571dba8b569ed24ee58a72e3e68b4117ac493a443cba4f591478ab68fca

            SHA512

            009356269042a719308b2151b989b927d182e09fe1cd4eedf53a2b45b2847399fd05d97c81ec04e97b7422e936695c9f4e2d70ed518d915e3d94c5a9aa6cfd85

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            abe2d8bda9226deb478467d54c576e99

            SHA1

            6962674c765a8f09cbbdff08c3a8648bba060dd9

            SHA256

            8f8ebe4ed88c0d7882e47a72c20d87523101b2f71f44cbd5ec29c5d7e208923a

            SHA512

            03aa84862831f64476c03c7274594b868c10ae0c980011b2daa1b9970e8cf99c836b544b9b59b52f06bd01e8732ba636260cefcf573a1e39d2c59bd3cac24211

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            797430e73af3b6bc528190a4abfcc2a2

            SHA1

            b9bda6728808038d9ccdc7d00ca69526c8a9d253

            SHA256

            6322ecfb13f80dddaafd1e9aba1f4eed2c0d5f0b43a1536d512122dbafba8a32

            SHA512

            a4d7c93969de86a9739ee2f0620db62897734c771dce01e42e235f54bcfb874eefb0cf99164a18ec1180e2201b37d6d5cdb18676d794c92818d124a6c93d9d1f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            2a7baa8793b1f632db66fa41ba2ebeec

            SHA1

            09f3aa835f87195f32d7eff65d1c0377a0a7d87c

            SHA256

            9710ca8868337c7c4c268f26baa4acfd89e16bd9cc5f84474b02c2b04b920c4c

            SHA512

            3c6a368faed67920df7b2e3a9a55bb6d42d4db8777f9c04b590746df22f62bfb6ec8d13a0bbc31e9394fdb267b0ec6a32eed35c7bd71c6a3cafaef75ab87a17b

          • memory/884-88-0x0000000000000000-mapping.dmp

          • memory/972-61-0x0000000000000000-mapping.dmp

          • memory/1068-81-0x0000000000000000-mapping.dmp

          • memory/1348-82-0x0000000000000000-mapping.dmp

          • memory/1560-71-0x0000000000000000-mapping.dmp

          • memory/1612-58-0x0000000000000000-mapping.dmp

          • memory/1616-64-0x0000000000000000-mapping.dmp

          • memory/1740-62-0x0000000000000000-mapping.dmp

          • memory/1768-59-0x0000000000000000-mapping.dmp

          • memory/1816-77-0x0000000000000000-mapping.dmp

          • memory/1884-54-0x0000000075201000-0x0000000075203000-memory.dmp

            Filesize

            8KB

          • memory/1884-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1884-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1884-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1892-87-0x0000000000000000-mapping.dmp