Analysis

  • max time kernel
    42s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:26

General

  • Target

    51220cb5bc3caafe56dfa2f7b0334cc47a543309c850aaf720c252e0587eeab0.exe

  • Size

    603KB

  • MD5

    8a85776c99e6c2a6ca43bf22fbdd754e

  • SHA1

    098941157d3e04872c09831db5c9fedcec23fef7

  • SHA256

    51220cb5bc3caafe56dfa2f7b0334cc47a543309c850aaf720c252e0587eeab0

  • SHA512

    917e7db9ba7e1c2b9cbfbca64db3b2405d3fc967abcb5eb5d3237db98142106cd24de8b902c0036fb3b0e4cdac16e71214c89c3e3e122914f3ad3852541bc74e

  • SSDEEP

    12288:pIny5DYTmINVMjMpdBqvPHQN84tsLdiXH+ne0IJmOnE:FUTmuVMjMf0gKUYoH8W

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\51220cb5bc3caafe56dfa2f7b0334cc47a543309c850aaf720c252e0587eeab0.exe
    "C:\Users\Admin\AppData\Local\Temp\51220cb5bc3caafe56dfa2f7b0334cc47a543309c850aaf720c252e0587eeab0.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:1468
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1356
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1528
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1760
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:884
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:956
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:432
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:960
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1740
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:808
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1624
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1396
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1752
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2024

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a695d6ebd48694741e2f98e3696d31ef

            SHA1

            74d69caf8bfc07925c018a54f56b4285f7f480db

            SHA256

            ab293bc4f5d60face3793e4534f4359de0ef3d708475e241ef97596be3e1d0cb

            SHA512

            96e4afe8dc2d5a1a4176260e2fac4e90538af0f61e7d4d5b29c5426bcc3f1a21210fd0fbe86580671f63d918dcaac12cd80343a587095cb37cf70589eff1562c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            0727aa803e86e6f52bd04b9958b581e0

            SHA1

            e1c46165044f4cc6d6715cae83d376006f669549

            SHA256

            1435d58f6046e1b229d1d12260ebf9f0395d793a05103f9d9a0d590306b4af87

            SHA512

            94e33e661e2f214a1009af0991004ade06d3fc864347fa0a756f24c95f700710d55294aac7d3006a7a23afe29a374a5830d5cd26e4c52a2b0836e1ddc5850552

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a22d784c9d90a728ca8bd072fa703e1b

            SHA1

            1ab76e29e47f15f6772b878141a3a76f78c82d70

            SHA256

            817256722e0fa614e209c6e0bbe6a8f511593a0fa01bafb14cc9cfd87270cbea

            SHA512

            e7597ebcc82281d869f8a1eda6f769ebf16369c3299b3b9b2351ee818277b313bb79866998f231653219e503f08679a1ae02e63e5da083783ea5dc6202ae6e6f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            54c711d600748ac6946bd623a6943c12

            SHA1

            1dc2aea6213b7c70f18044b996f1f2e7b2bd4cd1

            SHA256

            bdd0f9c82e0d9508be0fee6d45db5eab55ccfad300be55400682ba080f190d87

            SHA512

            02fe4a7f9c8d85b2c6e5f6c2d3ece9fe1c279a1da7743b29cc64f85086c102be7f3b7a37df7682d895f197b4958b3c8e5d1382566bb44495d948bfdfaf1022b8

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            54c711d600748ac6946bd623a6943c12

            SHA1

            1dc2aea6213b7c70f18044b996f1f2e7b2bd4cd1

            SHA256

            bdd0f9c82e0d9508be0fee6d45db5eab55ccfad300be55400682ba080f190d87

            SHA512

            02fe4a7f9c8d85b2c6e5f6c2d3ece9fe1c279a1da7743b29cc64f85086c102be7f3b7a37df7682d895f197b4958b3c8e5d1382566bb44495d948bfdfaf1022b8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            97df46584ccf387c9ba6c7bebf817885

            SHA1

            26bc901fb207a621c4fd3f9c5a2e51fcef8661d6

            SHA256

            84fc43eeee4d4777ee3da77f5e1023ba975ca9f210c7d9e7e0fc71c61808c987

            SHA512

            3c19384e0dd0d3ee555ad461af0a8c12f62647fe2e45a3c2a8e5babc4d1aa01164d8a775bfffd022082de7bbf646def21cae07f0a611d6262938aa21edeab0c2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            97df46584ccf387c9ba6c7bebf817885

            SHA1

            26bc901fb207a621c4fd3f9c5a2e51fcef8661d6

            SHA256

            84fc43eeee4d4777ee3da77f5e1023ba975ca9f210c7d9e7e0fc71c61808c987

            SHA512

            3c19384e0dd0d3ee555ad461af0a8c12f62647fe2e45a3c2a8e5babc4d1aa01164d8a775bfffd022082de7bbf646def21cae07f0a611d6262938aa21edeab0c2

          • \Users\Admin\AppData\Local\Temp\nsyEF32.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyEF32.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyEF32.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyEF32.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyEF32.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a695d6ebd48694741e2f98e3696d31ef

            SHA1

            74d69caf8bfc07925c018a54f56b4285f7f480db

            SHA256

            ab293bc4f5d60face3793e4534f4359de0ef3d708475e241ef97596be3e1d0cb

            SHA512

            96e4afe8dc2d5a1a4176260e2fac4e90538af0f61e7d4d5b29c5426bcc3f1a21210fd0fbe86580671f63d918dcaac12cd80343a587095cb37cf70589eff1562c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a695d6ebd48694741e2f98e3696d31ef

            SHA1

            74d69caf8bfc07925c018a54f56b4285f7f480db

            SHA256

            ab293bc4f5d60face3793e4534f4359de0ef3d708475e241ef97596be3e1d0cb

            SHA512

            96e4afe8dc2d5a1a4176260e2fac4e90538af0f61e7d4d5b29c5426bcc3f1a21210fd0fbe86580671f63d918dcaac12cd80343a587095cb37cf70589eff1562c

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a695d6ebd48694741e2f98e3696d31ef

            SHA1

            74d69caf8bfc07925c018a54f56b4285f7f480db

            SHA256

            ab293bc4f5d60face3793e4534f4359de0ef3d708475e241ef97596be3e1d0cb

            SHA512

            96e4afe8dc2d5a1a4176260e2fac4e90538af0f61e7d4d5b29c5426bcc3f1a21210fd0fbe86580671f63d918dcaac12cd80343a587095cb37cf70589eff1562c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            0727aa803e86e6f52bd04b9958b581e0

            SHA1

            e1c46165044f4cc6d6715cae83d376006f669549

            SHA256

            1435d58f6046e1b229d1d12260ebf9f0395d793a05103f9d9a0d590306b4af87

            SHA512

            94e33e661e2f214a1009af0991004ade06d3fc864347fa0a756f24c95f700710d55294aac7d3006a7a23afe29a374a5830d5cd26e4c52a2b0836e1ddc5850552

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            0727aa803e86e6f52bd04b9958b581e0

            SHA1

            e1c46165044f4cc6d6715cae83d376006f669549

            SHA256

            1435d58f6046e1b229d1d12260ebf9f0395d793a05103f9d9a0d590306b4af87

            SHA512

            94e33e661e2f214a1009af0991004ade06d3fc864347fa0a756f24c95f700710d55294aac7d3006a7a23afe29a374a5830d5cd26e4c52a2b0836e1ddc5850552

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a22d784c9d90a728ca8bd072fa703e1b

            SHA1

            1ab76e29e47f15f6772b878141a3a76f78c82d70

            SHA256

            817256722e0fa614e209c6e0bbe6a8f511593a0fa01bafb14cc9cfd87270cbea

            SHA512

            e7597ebcc82281d869f8a1eda6f769ebf16369c3299b3b9b2351ee818277b313bb79866998f231653219e503f08679a1ae02e63e5da083783ea5dc6202ae6e6f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            54c711d600748ac6946bd623a6943c12

            SHA1

            1dc2aea6213b7c70f18044b996f1f2e7b2bd4cd1

            SHA256

            bdd0f9c82e0d9508be0fee6d45db5eab55ccfad300be55400682ba080f190d87

            SHA512

            02fe4a7f9c8d85b2c6e5f6c2d3ece9fe1c279a1da7743b29cc64f85086c102be7f3b7a37df7682d895f197b4958b3c8e5d1382566bb44495d948bfdfaf1022b8

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            97df46584ccf387c9ba6c7bebf817885

            SHA1

            26bc901fb207a621c4fd3f9c5a2e51fcef8661d6

            SHA256

            84fc43eeee4d4777ee3da77f5e1023ba975ca9f210c7d9e7e0fc71c61808c987

            SHA512

            3c19384e0dd0d3ee555ad461af0a8c12f62647fe2e45a3c2a8e5babc4d1aa01164d8a775bfffd022082de7bbf646def21cae07f0a611d6262938aa21edeab0c2

          • memory/432-70-0x0000000000000000-mapping.dmp

          • memory/808-81-0x0000000000000000-mapping.dmp

          • memory/884-62-0x0000000000000000-mapping.dmp

          • memory/956-64-0x0000000000000000-mapping.dmp

          • memory/960-76-0x0000000000000000-mapping.dmp

          • memory/1356-57-0x0000000000000000-mapping.dmp

          • memory/1396-87-0x0000000000000000-mapping.dmp

          • memory/1468-54-0x0000000075211000-0x0000000075213000-memory.dmp

            Filesize

            8KB

          • memory/1468-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1468-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1528-58-0x0000000000000000-mapping.dmp

          • memory/1624-86-0x0000000000000000-mapping.dmp

          • memory/1740-80-0x0000000000000000-mapping.dmp

          • memory/1760-61-0x0000000000000000-mapping.dmp