Analysis

  • max time kernel
    58s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:36

General

  • Target

    576c53098808a6109d8f8137fc3af5230d9ebdea0cac2aebefb0cdd6374221ab.exe

  • Size

    558KB

  • MD5

    7c99ad521a8b945aae9644210820dfaa

  • SHA1

    80b87a82f44ecfc97d1c645b5cee40377bb1e5eb

  • SHA256

    576c53098808a6109d8f8137fc3af5230d9ebdea0cac2aebefb0cdd6374221ab

  • SHA512

    9498def41a6e8cd6d1d226aa329ef91a291ed2ab72aafbf3896c3c6421b2ebb7225496c7e0e5a75be34135ff5839936e81fe9f678804b2472e79c19d9b209e84

  • SSDEEP

    12288:s2hB6DQbfmylt30x3DM9OF/Ekb/YAZWQe1UoNs01SIo903r/N/Ir52dO:kD0f723DqO1jbwp/1SIy03r/Vu52dO

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\576c53098808a6109d8f8137fc3af5230d9ebdea0cac2aebefb0cdd6374221ab.exe
    "C:\Users\Admin\AppData\Local\Temp\576c53098808a6109d8f8137fc3af5230d9ebdea0cac2aebefb0cdd6374221ab.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:1324
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:572
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:816
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1100
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1036
        • 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:1328
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1712
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1528
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:328
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1344
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1552
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:812
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1688

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b94bcb0a510d12d029419c34dbd707d2

            SHA1

            e04729aa9767b8383f354e53e1eb1cf5372f0086

            SHA256

            d7e58f09f8f9ad7db29d74eeddaea96c95e84b5d2adeef5841363bd41a269223

            SHA512

            270afa631e8739f96e9074095a8c6835ffd66bd320c4805b2976e0dec7fbd703b1ac1ff21c8b2dd9a3f9818e4c912a974e6eab1d4ed4859340fe33d42250c350

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            d570bb88231f5c4afca00a8c9ee83ebe

            SHA1

            00ba27fa0c02ce276aa6c283ec2a774ede5505d7

            SHA256

            5295060fe489a4aa62c0e2920224a7c3fdcc393ed0fdeee152957632489935be

            SHA512

            c31fb54c58f407df5a561f07cb049241750722ab0db07f7423f43071c0b86d31d4fa8c59b9cedb6448543c52c3248b7155451695ce10a7eefe9ce00b34b9ee06

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0be39791d6c3b128d6ee112c77c98aa5

            SHA1

            8b1b798b8548c60d6acaf57cff67203950f329d3

            SHA256

            97ed82556d6b207ab9e50dc38830481ae86afc5df41c3bca763be8b1ab4f7dcb

            SHA512

            8f76ecc6f63068af57388035be29d8da48144b3e3a8c75435b53463ac667cf4d537459399f0b0ee0e40fc604a3342c757fac620256f90a9d0542d5d7e5320fbb

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            53cbad86644a3e71aa1efad24a40b37e

            SHA1

            b99ae8e70f7bb36497b81d8328fc9ff17f2c0de3

            SHA256

            bc19014b1afb72471685b1efe8fce72a873674a46d4edec8ecd760f6db6b09df

            SHA512

            32ee2d383f95f869f6e14971de57bbc3024849682b666a89c93bafb56a4234797587f9ed578764953b4a8a8b58506363f135fcde9736971c1cf72ddc10af13fa

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            53cbad86644a3e71aa1efad24a40b37e

            SHA1

            b99ae8e70f7bb36497b81d8328fc9ff17f2c0de3

            SHA256

            bc19014b1afb72471685b1efe8fce72a873674a46d4edec8ecd760f6db6b09df

            SHA512

            32ee2d383f95f869f6e14971de57bbc3024849682b666a89c93bafb56a4234797587f9ed578764953b4a8a8b58506363f135fcde9736971c1cf72ddc10af13fa

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            252f611ba547271321edb75202f9494e

            SHA1

            673e7392240dcf6bb65f56e45ca100887fa2ecac

            SHA256

            f428e2f44a9cbb7007f79a26a286e1118e6d8cd0d9bfffbc7603a278dccddebd

            SHA512

            0c026c572771390fe3a21a40997279cc30e73c196b07cf9e54b73b27283d0c2a4e902650064dda6b3b49ebd3ffc7c0a78416923368bd3ec6c0f6f12a0a4b79d9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            252f611ba547271321edb75202f9494e

            SHA1

            673e7392240dcf6bb65f56e45ca100887fa2ecac

            SHA256

            f428e2f44a9cbb7007f79a26a286e1118e6d8cd0d9bfffbc7603a278dccddebd

            SHA512

            0c026c572771390fe3a21a40997279cc30e73c196b07cf9e54b73b27283d0c2a4e902650064dda6b3b49ebd3ffc7c0a78416923368bd3ec6c0f6f12a0a4b79d9

          • \Users\Admin\AppData\Local\Temp\nso33D0.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso33D0.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso33D0.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso33D0.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso33D0.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b94bcb0a510d12d029419c34dbd707d2

            SHA1

            e04729aa9767b8383f354e53e1eb1cf5372f0086

            SHA256

            d7e58f09f8f9ad7db29d74eeddaea96c95e84b5d2adeef5841363bd41a269223

            SHA512

            270afa631e8739f96e9074095a8c6835ffd66bd320c4805b2976e0dec7fbd703b1ac1ff21c8b2dd9a3f9818e4c912a974e6eab1d4ed4859340fe33d42250c350

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b94bcb0a510d12d029419c34dbd707d2

            SHA1

            e04729aa9767b8383f354e53e1eb1cf5372f0086

            SHA256

            d7e58f09f8f9ad7db29d74eeddaea96c95e84b5d2adeef5841363bd41a269223

            SHA512

            270afa631e8739f96e9074095a8c6835ffd66bd320c4805b2976e0dec7fbd703b1ac1ff21c8b2dd9a3f9818e4c912a974e6eab1d4ed4859340fe33d42250c350

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            b94bcb0a510d12d029419c34dbd707d2

            SHA1

            e04729aa9767b8383f354e53e1eb1cf5372f0086

            SHA256

            d7e58f09f8f9ad7db29d74eeddaea96c95e84b5d2adeef5841363bd41a269223

            SHA512

            270afa631e8739f96e9074095a8c6835ffd66bd320c4805b2976e0dec7fbd703b1ac1ff21c8b2dd9a3f9818e4c912a974e6eab1d4ed4859340fe33d42250c350

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            d570bb88231f5c4afca00a8c9ee83ebe

            SHA1

            00ba27fa0c02ce276aa6c283ec2a774ede5505d7

            SHA256

            5295060fe489a4aa62c0e2920224a7c3fdcc393ed0fdeee152957632489935be

            SHA512

            c31fb54c58f407df5a561f07cb049241750722ab0db07f7423f43071c0b86d31d4fa8c59b9cedb6448543c52c3248b7155451695ce10a7eefe9ce00b34b9ee06

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            d570bb88231f5c4afca00a8c9ee83ebe

            SHA1

            00ba27fa0c02ce276aa6c283ec2a774ede5505d7

            SHA256

            5295060fe489a4aa62c0e2920224a7c3fdcc393ed0fdeee152957632489935be

            SHA512

            c31fb54c58f407df5a561f07cb049241750722ab0db07f7423f43071c0b86d31d4fa8c59b9cedb6448543c52c3248b7155451695ce10a7eefe9ce00b34b9ee06

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            0be39791d6c3b128d6ee112c77c98aa5

            SHA1

            8b1b798b8548c60d6acaf57cff67203950f329d3

            SHA256

            97ed82556d6b207ab9e50dc38830481ae86afc5df41c3bca763be8b1ab4f7dcb

            SHA512

            8f76ecc6f63068af57388035be29d8da48144b3e3a8c75435b53463ac667cf4d537459399f0b0ee0e40fc604a3342c757fac620256f90a9d0542d5d7e5320fbb

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            53cbad86644a3e71aa1efad24a40b37e

            SHA1

            b99ae8e70f7bb36497b81d8328fc9ff17f2c0de3

            SHA256

            bc19014b1afb72471685b1efe8fce72a873674a46d4edec8ecd760f6db6b09df

            SHA512

            32ee2d383f95f869f6e14971de57bbc3024849682b666a89c93bafb56a4234797587f9ed578764953b4a8a8b58506363f135fcde9736971c1cf72ddc10af13fa

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            252f611ba547271321edb75202f9494e

            SHA1

            673e7392240dcf6bb65f56e45ca100887fa2ecac

            SHA256

            f428e2f44a9cbb7007f79a26a286e1118e6d8cd0d9bfffbc7603a278dccddebd

            SHA512

            0c026c572771390fe3a21a40997279cc30e73c196b07cf9e54b73b27283d0c2a4e902650064dda6b3b49ebd3ffc7c0a78416923368bd3ec6c0f6f12a0a4b79d9

          • memory/328-82-0x0000000000000000-mapping.dmp

          • memory/572-57-0x0000000000000000-mapping.dmp

          • memory/816-58-0x0000000000000000-mapping.dmp

          • memory/1036-62-0x0000000000000000-mapping.dmp

          • memory/1100-61-0x0000000000000000-mapping.dmp

          • memory/1324-69-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1324-54-0x0000000075F81000-0x0000000075F83000-memory.dmp

            Filesize

            8KB

          • memory/1324-59-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1324-91-0x0000000000370000-0x00000000007BE000-memory.dmp

            Filesize

            4.3MB

          • memory/1328-71-0x0000000000000000-mapping.dmp

          • memory/1344-87-0x0000000000000000-mapping.dmp

          • memory/1528-81-0x0000000000000000-mapping.dmp

          • memory/1552-88-0x0000000000000000-mapping.dmp

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

          • memory/1712-77-0x0000000000000000-mapping.dmp