Analysis

  • max time kernel
    45s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:30

General

  • Target

    28854a001bb513f30b3cb0e92c0e10841edf002508c457cb139fa55d2a99126c.exe

  • Size

    603KB

  • MD5

    6920b67533c89f368e73b91b198a3684

  • SHA1

    c41ce9337f1aa2c6e82f6498af9640eb271a86f8

  • SHA256

    28854a001bb513f30b3cb0e92c0e10841edf002508c457cb139fa55d2a99126c

  • SHA512

    0cb5c98f339f19e2c8b1fb2a289888226329f8da4b6df569e6b2bbd89d4ecdace2a833ff3ec9c400fa3fd6c7703dd5cd6870f7ad8a13040c242cefd67ff27196

  • SSDEEP

    12288:YIny5DYTwOfT16NZYjAu11z+vRiRcUGOp55XBa+qBD5Nkcjie:2UTw016YjJzxRfLp5NBZqh5ycOe

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\28854a001bb513f30b3cb0e92c0e10841edf002508c457cb139fa55d2a99126c.exe
    "C:\Users\Admin\AppData\Local\Temp\28854a001bb513f30b3cb0e92c0e10841edf002508c457cb139fa55d2a99126c.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:1848
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1340
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1268
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1732
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1336
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1704
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1724
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1032
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1984
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1176
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1804
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1596
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1936

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9f0f98c1c8c14841da995d118e191f9

            SHA1

            6a7b0807a19513712e0a61ee4ab99464d04500ee

            SHA256

            67db9f1a0740ba143090313112550b2ce10484bd226e7241ccfad3786383372c

            SHA512

            801a465838b1d1903a4598c2eb40776093a3737f424bc56e84f99c35e15e6ed1e3b742ba4ee9ab18a5b37c18398aab802db6b8363883492ae8999ab91ac28d34

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3986c9417574fcee4bb3dab2b2e28a52

            SHA1

            da4d4a418cf48cb7bbb86148fdf980ab4834ae68

            SHA256

            ca2d7022af8a827873363ea1b126f4440f599f653f84bfc24b10cd7e50b94eaf

            SHA512

            5ddc931e455083135f3d680ae27c7c2a88c689c1c5a7cbff4cc6fb2f8f4ed26decd18bd7d63450da5425b3c4be0e02e3f840b02285229d8ea49c3034ee25bc6f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b7d27ed23cc8cc1f017f67baa6b89776

            SHA1

            2f8da580ab33580080bdefd6e6bb48f0750a7b0f

            SHA256

            3c414c7d6bdf40aee8336d1142a7d020fe5ba89b5107fe2f89bf57b3a86ee41f

            SHA512

            4212432728baf86129d6b55e19e14a747190705125c24bd6d083aa12d18530643381599acaf6f6713ee3e285f8f4e5fe32e8bbd3f4bebc68b163b13558faeb3e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            eb745b748ad2968650769f98c77c83bd

            SHA1

            8294a0c938be9bbcbf831c129d6ea7e5ee462a55

            SHA256

            1992405689b2eca6124182d19ed258e44e77dd75896c8b55ed2752b985f7520c

            SHA512

            d77cab5f86bee78cfa860236db3e156823fd9c0712353f3751df19593bbd4ee3abff71dd28c98ba145844dddad5a645f2fa572197b745fb443db7b0ddedba03f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            eb745b748ad2968650769f98c77c83bd

            SHA1

            8294a0c938be9bbcbf831c129d6ea7e5ee462a55

            SHA256

            1992405689b2eca6124182d19ed258e44e77dd75896c8b55ed2752b985f7520c

            SHA512

            d77cab5f86bee78cfa860236db3e156823fd9c0712353f3751df19593bbd4ee3abff71dd28c98ba145844dddad5a645f2fa572197b745fb443db7b0ddedba03f

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b9454af382ac39e56c1677efb526e63f

            SHA1

            067386ea77bb8a57c543bad754ceb2cdeda21128

            SHA256

            6037de1b7692c31ca7aca31908f4d17582a41628078ffb6b5716151f2bfb5cff

            SHA512

            0735c8be2ae36add72a0c6077b6ef9cd63fafa0074335ce597035ed693cbcb4442487284169b17b16e0205b15a4df010a128e703baa73f51312ca6eb32b0fff1

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b9454af382ac39e56c1677efb526e63f

            SHA1

            067386ea77bb8a57c543bad754ceb2cdeda21128

            SHA256

            6037de1b7692c31ca7aca31908f4d17582a41628078ffb6b5716151f2bfb5cff

            SHA512

            0735c8be2ae36add72a0c6077b6ef9cd63fafa0074335ce597035ed693cbcb4442487284169b17b16e0205b15a4df010a128e703baa73f51312ca6eb32b0fff1

          • \Users\Admin\AppData\Local\Temp\nsdE801.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsdE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsdE801.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9f0f98c1c8c14841da995d118e191f9

            SHA1

            6a7b0807a19513712e0a61ee4ab99464d04500ee

            SHA256

            67db9f1a0740ba143090313112550b2ce10484bd226e7241ccfad3786383372c

            SHA512

            801a465838b1d1903a4598c2eb40776093a3737f424bc56e84f99c35e15e6ed1e3b742ba4ee9ab18a5b37c18398aab802db6b8363883492ae8999ab91ac28d34

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9f0f98c1c8c14841da995d118e191f9

            SHA1

            6a7b0807a19513712e0a61ee4ab99464d04500ee

            SHA256

            67db9f1a0740ba143090313112550b2ce10484bd226e7241ccfad3786383372c

            SHA512

            801a465838b1d1903a4598c2eb40776093a3737f424bc56e84f99c35e15e6ed1e3b742ba4ee9ab18a5b37c18398aab802db6b8363883492ae8999ab91ac28d34

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f9f0f98c1c8c14841da995d118e191f9

            SHA1

            6a7b0807a19513712e0a61ee4ab99464d04500ee

            SHA256

            67db9f1a0740ba143090313112550b2ce10484bd226e7241ccfad3786383372c

            SHA512

            801a465838b1d1903a4598c2eb40776093a3737f424bc56e84f99c35e15e6ed1e3b742ba4ee9ab18a5b37c18398aab802db6b8363883492ae8999ab91ac28d34

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3986c9417574fcee4bb3dab2b2e28a52

            SHA1

            da4d4a418cf48cb7bbb86148fdf980ab4834ae68

            SHA256

            ca2d7022af8a827873363ea1b126f4440f599f653f84bfc24b10cd7e50b94eaf

            SHA512

            5ddc931e455083135f3d680ae27c7c2a88c689c1c5a7cbff4cc6fb2f8f4ed26decd18bd7d63450da5425b3c4be0e02e3f840b02285229d8ea49c3034ee25bc6f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            3986c9417574fcee4bb3dab2b2e28a52

            SHA1

            da4d4a418cf48cb7bbb86148fdf980ab4834ae68

            SHA256

            ca2d7022af8a827873363ea1b126f4440f599f653f84bfc24b10cd7e50b94eaf

            SHA512

            5ddc931e455083135f3d680ae27c7c2a88c689c1c5a7cbff4cc6fb2f8f4ed26decd18bd7d63450da5425b3c4be0e02e3f840b02285229d8ea49c3034ee25bc6f

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b7d27ed23cc8cc1f017f67baa6b89776

            SHA1

            2f8da580ab33580080bdefd6e6bb48f0750a7b0f

            SHA256

            3c414c7d6bdf40aee8336d1142a7d020fe5ba89b5107fe2f89bf57b3a86ee41f

            SHA512

            4212432728baf86129d6b55e19e14a747190705125c24bd6d083aa12d18530643381599acaf6f6713ee3e285f8f4e5fe32e8bbd3f4bebc68b163b13558faeb3e

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            eb745b748ad2968650769f98c77c83bd

            SHA1

            8294a0c938be9bbcbf831c129d6ea7e5ee462a55

            SHA256

            1992405689b2eca6124182d19ed258e44e77dd75896c8b55ed2752b985f7520c

            SHA512

            d77cab5f86bee78cfa860236db3e156823fd9c0712353f3751df19593bbd4ee3abff71dd28c98ba145844dddad5a645f2fa572197b745fb443db7b0ddedba03f

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b9454af382ac39e56c1677efb526e63f

            SHA1

            067386ea77bb8a57c543bad754ceb2cdeda21128

            SHA256

            6037de1b7692c31ca7aca31908f4d17582a41628078ffb6b5716151f2bfb5cff

            SHA512

            0735c8be2ae36add72a0c6077b6ef9cd63fafa0074335ce597035ed693cbcb4442487284169b17b16e0205b15a4df010a128e703baa73f51312ca6eb32b0fff1

          • memory/768-57-0x0000000000000000-mapping.dmp

          • memory/1032-80-0x0000000000000000-mapping.dmp

          • memory/1176-86-0x0000000000000000-mapping.dmp

          • memory/1268-61-0x0000000000000000-mapping.dmp

          • memory/1336-64-0x0000000000000000-mapping.dmp

          • memory/1340-58-0x0000000000000000-mapping.dmp

          • memory/1704-70-0x0000000000000000-mapping.dmp

          • memory/1724-76-0x0000000000000000-mapping.dmp

          • memory/1732-62-0x0000000000000000-mapping.dmp

          • memory/1804-87-0x0000000000000000-mapping.dmp

          • memory/1848-54-0x0000000076091000-0x0000000076093000-memory.dmp

            Filesize

            8KB

          • memory/1848-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1848-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1984-81-0x0000000000000000-mapping.dmp