Analysis

  • max time kernel
    297s
  • max time network
    321s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    a6b5e438d31cc78c4e215b8d515e2fb321d741bf18ca3d8a08c91967456955cb.exe

  • Size

    447KB

  • MD5

    95120f36c34c575c5fd48eab2297f8ab

  • SHA1

    6d442f20cd274360cc96954eeb2cde2af06b4355

  • SHA256

    a6b5e438d31cc78c4e215b8d515e2fb321d741bf18ca3d8a08c91967456955cb

  • SHA512

    f882eaa363e83e05a3474bcfa1cd43785aff080db9e04edc450101c73e4e7e4ea11cedbe8be3858760946897056913466585a957db6d3acb89c6fcd961cd6ce4

  • SSDEEP

    12288:RwvJjDp3Swh5y/FA2L6/PDbtDdRodmQ+E0QPP:RgJ3p3SwqRL6/vV/mmQjP

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\a6b5e438d31cc78c4e215b8d515e2fb321d741bf18ca3d8a08c91967456955cb.exe
    "C:\Users\Admin\AppData\Local\Temp\a6b5e438d31cc78c4e215b8d515e2fb321d741bf18ca3d8a08c91967456955cb.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:3740
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1060
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1944
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2648
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4816
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3216
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4852
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3052
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:3156
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4068
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3712
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:2176
          • 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:4740
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4224

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsr11F5.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aa1abd9b9f99df9ea0f01a36dc0b74a

            SHA1

            d51495d9f7ef477c2cc9f30315790f070fc238c8

            SHA256

            24d7e5690f63788210ef0cf5efe38032a4218d012ac8f4a6bb539bf5219fde3a

            SHA512

            af9cad186eba68a62fff466a020b57dbf2710afcdc5de8b4a3ea9814f64ac647d021995b94ea51973b6b73d0206b49718aac989846d268fe8b78f03e1a1bbd4d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aa1abd9b9f99df9ea0f01a36dc0b74a

            SHA1

            d51495d9f7ef477c2cc9f30315790f070fc238c8

            SHA256

            24d7e5690f63788210ef0cf5efe38032a4218d012ac8f4a6bb539bf5219fde3a

            SHA512

            af9cad186eba68a62fff466a020b57dbf2710afcdc5de8b4a3ea9814f64ac647d021995b94ea51973b6b73d0206b49718aac989846d268fe8b78f03e1a1bbd4d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aa1abd9b9f99df9ea0f01a36dc0b74a

            SHA1

            d51495d9f7ef477c2cc9f30315790f070fc238c8

            SHA256

            24d7e5690f63788210ef0cf5efe38032a4218d012ac8f4a6bb539bf5219fde3a

            SHA512

            af9cad186eba68a62fff466a020b57dbf2710afcdc5de8b4a3ea9814f64ac647d021995b94ea51973b6b73d0206b49718aac989846d268fe8b78f03e1a1bbd4d

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3aa1abd9b9f99df9ea0f01a36dc0b74a

            SHA1

            d51495d9f7ef477c2cc9f30315790f070fc238c8

            SHA256

            24d7e5690f63788210ef0cf5efe38032a4218d012ac8f4a6bb539bf5219fde3a

            SHA512

            af9cad186eba68a62fff466a020b57dbf2710afcdc5de8b4a3ea9814f64ac647d021995b94ea51973b6b73d0206b49718aac989846d268fe8b78f03e1a1bbd4d

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f1201bd3294fb0ed1c23a13ada2a0856

            SHA1

            a9b63270cf7e753305a870bf5b61e1420a8e7e67

            SHA256

            3908d2b6f2997148353892bd459a40d2981f17bf3eef265c63562b66963156a2

            SHA512

            5cdc16c66be77cf7b7659c2e6a5389318ebb9958f5fdd7c035aa755be1b68745060b43c5196fc6adc8ac54b2ac0c4ee633371d2d223bcb817c667e636bc43f36

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f1201bd3294fb0ed1c23a13ada2a0856

            SHA1

            a9b63270cf7e753305a870bf5b61e1420a8e7e67

            SHA256

            3908d2b6f2997148353892bd459a40d2981f17bf3eef265c63562b66963156a2

            SHA512

            5cdc16c66be77cf7b7659c2e6a5389318ebb9958f5fdd7c035aa755be1b68745060b43c5196fc6adc8ac54b2ac0c4ee633371d2d223bcb817c667e636bc43f36

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f1201bd3294fb0ed1c23a13ada2a0856

            SHA1

            a9b63270cf7e753305a870bf5b61e1420a8e7e67

            SHA256

            3908d2b6f2997148353892bd459a40d2981f17bf3eef265c63562b66963156a2

            SHA512

            5cdc16c66be77cf7b7659c2e6a5389318ebb9958f5fdd7c035aa755be1b68745060b43c5196fc6adc8ac54b2ac0c4ee633371d2d223bcb817c667e636bc43f36

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7c5b0b32e51abf5062c5e94fac5467ac

            SHA1

            6a9b0badd17ff107e93548bc22b859be8080812d

            SHA256

            2b1af924d6fe37e8d5be6d2b9e97c154ff64001428b11f56de5e89c6877dedf2

            SHA512

            a492c8372c5572669bd35dcd0e6184a2bf058b8a7d5b1975074cfd68335fea77ef488570237a1051e81090c40f8bdc9a8d8ef2e8d28740c3e5fa686e534a068f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7c5b0b32e51abf5062c5e94fac5467ac

            SHA1

            6a9b0badd17ff107e93548bc22b859be8080812d

            SHA256

            2b1af924d6fe37e8d5be6d2b9e97c154ff64001428b11f56de5e89c6877dedf2

            SHA512

            a492c8372c5572669bd35dcd0e6184a2bf058b8a7d5b1975074cfd68335fea77ef488570237a1051e81090c40f8bdc9a8d8ef2e8d28740c3e5fa686e534a068f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f39a9c53eda1794cbc868bfb061cae2

            SHA1

            67e7b067dd31befec950017c658dc2e58e0902d6

            SHA256

            8ff046391a14e44702f66418473618d3404bcd6c598eed2854273287f5cdc0bd

            SHA512

            be3eca9a86e8a0c7d5ec02e568f6cdc2ab45abd5fbaff92e3fbd476444674271137319554cbb16a592fc39cd844adfa8254ec3d37a604a97fef56deef7dc4b89

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f39a9c53eda1794cbc868bfb061cae2

            SHA1

            67e7b067dd31befec950017c658dc2e58e0902d6

            SHA256

            8ff046391a14e44702f66418473618d3404bcd6c598eed2854273287f5cdc0bd

            SHA512

            be3eca9a86e8a0c7d5ec02e568f6cdc2ab45abd5fbaff92e3fbd476444674271137319554cbb16a592fc39cd844adfa8254ec3d37a604a97fef56deef7dc4b89

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f39a9c53eda1794cbc868bfb061cae2

            SHA1

            67e7b067dd31befec950017c658dc2e58e0902d6

            SHA256

            8ff046391a14e44702f66418473618d3404bcd6c598eed2854273287f5cdc0bd

            SHA512

            be3eca9a86e8a0c7d5ec02e568f6cdc2ab45abd5fbaff92e3fbd476444674271137319554cbb16a592fc39cd844adfa8254ec3d37a604a97fef56deef7dc4b89

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b78fc8dec3ef33f2ee3eb3cfcca63d57

            SHA1

            99623bbadd49f525f9cba147535e66ef481ee963

            SHA256

            ac62a2b34b7d61c46467672ff0d1c68062650702bdcf19aa79def2949e1ebd29

            SHA512

            ede66a458fafdd03cf86b5b65e2fc2a88c5601b7e0cacbdc620dcc5c10c849685a8e6d66c4d7bf76244787337751dbf233edaafac5518a3fb3ec5652bf9b0597

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b78fc8dec3ef33f2ee3eb3cfcca63d57

            SHA1

            99623bbadd49f525f9cba147535e66ef481ee963

            SHA256

            ac62a2b34b7d61c46467672ff0d1c68062650702bdcf19aa79def2949e1ebd29

            SHA512

            ede66a458fafdd03cf86b5b65e2fc2a88c5601b7e0cacbdc620dcc5c10c849685a8e6d66c4d7bf76244787337751dbf233edaafac5518a3fb3ec5652bf9b0597

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b78fc8dec3ef33f2ee3eb3cfcca63d57

            SHA1

            99623bbadd49f525f9cba147535e66ef481ee963

            SHA256

            ac62a2b34b7d61c46467672ff0d1c68062650702bdcf19aa79def2949e1ebd29

            SHA512

            ede66a458fafdd03cf86b5b65e2fc2a88c5601b7e0cacbdc620dcc5c10c849685a8e6d66c4d7bf76244787337751dbf233edaafac5518a3fb3ec5652bf9b0597

          • memory/1060-135-0x0000000000000000-mapping.dmp

          • memory/1944-136-0x0000000000000000-mapping.dmp

          • memory/2176-165-0x0000000000000000-mapping.dmp

          • memory/2648-139-0x0000000000000000-mapping.dmp

          • memory/3052-152-0x0000000000000000-mapping.dmp

          • memory/3156-157-0x0000000000000000-mapping.dmp

          • memory/3216-141-0x0000000000000000-mapping.dmp

          • memory/3712-164-0x0000000000000000-mapping.dmp

          • memory/4068-158-0x0000000000000000-mapping.dmp

          • memory/4816-140-0x0000000000000000-mapping.dmp

          • memory/4852-146-0x0000000000000000-mapping.dmp