Analysis

  • max time kernel
    168s
  • max time network
    195s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-11-2022 00:07

General

  • Target

    1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe

  • Size

    602KB

  • MD5

    469e82590b6468c8905d9d5828bcb99c

  • SHA1

    08e9663cea14a94c266c85d98856a6a5ee5fba6e

  • SHA256

    1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391

  • SHA512

    a1b757c29cfb84c7b3957d6509a9515acdd31555484713dde6f81382114f389485179f973eb3399c3b1b38a2cf37d90d81cdb6bfdaff84363ec237c798316d4b

  • SSDEEP

    12288:3Iny5DYT26dRG9lzooP3mnMwoH6b02n3PbHpBVkoKfyQYe1CoGXfefmJ:fUT2b9l8nZYG02n/bH/V5KfygGPefm

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\1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe
    "C:\Users\Admin\AppData\Local\Temp\1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.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:3660
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4804
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3056
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4916
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3256
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4848
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4476
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2728
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4356
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:420
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4448
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3788
          • 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:1772
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:3516

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsx7EF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c0746af6dcbbc1a1494926743d0ed9f8

            SHA1

            3f010a459c1bce068c8ee4ec5c4f2582c91e7a2c

            SHA256

            892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28

            SHA512

            48bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c0746af6dcbbc1a1494926743d0ed9f8

            SHA1

            3f010a459c1bce068c8ee4ec5c4f2582c91e7a2c

            SHA256

            892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28

            SHA512

            48bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c0746af6dcbbc1a1494926743d0ed9f8

            SHA1

            3f010a459c1bce068c8ee4ec5c4f2582c91e7a2c

            SHA256

            892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28

            SHA512

            48bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            c0746af6dcbbc1a1494926743d0ed9f8

            SHA1

            3f010a459c1bce068c8ee4ec5c4f2582c91e7a2c

            SHA256

            892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28

            SHA512

            48bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f2758accedd24fd5598b4539a91eb5b8

            SHA1

            c5171ca12b7c59d564d1613517d67e8fb2606d9e

            SHA256

            473bc0734bfed772630018aa74190ee457bfa4e2860a46df556d4deca3901e00

            SHA512

            ee1d2913e29064ed7953c3dd931518021184d779d4286b9c06b90e6ead27bb64a74021f619f832982b08f89b7451e2685b135fdba8d147bc9753e4e35810e812

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f2758accedd24fd5598b4539a91eb5b8

            SHA1

            c5171ca12b7c59d564d1613517d67e8fb2606d9e

            SHA256

            473bc0734bfed772630018aa74190ee457bfa4e2860a46df556d4deca3901e00

            SHA512

            ee1d2913e29064ed7953c3dd931518021184d779d4286b9c06b90e6ead27bb64a74021f619f832982b08f89b7451e2685b135fdba8d147bc9753e4e35810e812

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            f2758accedd24fd5598b4539a91eb5b8

            SHA1

            c5171ca12b7c59d564d1613517d67e8fb2606d9e

            SHA256

            473bc0734bfed772630018aa74190ee457bfa4e2860a46df556d4deca3901e00

            SHA512

            ee1d2913e29064ed7953c3dd931518021184d779d4286b9c06b90e6ead27bb64a74021f619f832982b08f89b7451e2685b135fdba8d147bc9753e4e35810e812

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2a2c6cf977b3ea6c642ee8dd502c69f4

            SHA1

            23f14cffb60c9e0faf9dca28c826d8f04c0e8f69

            SHA256

            c356f7d98709cfcb487249ae7588a116e143221d20197af1ab5799d616182414

            SHA512

            a3a2b91b81242ed8e4cb7631414d4f790474c09037373a262b8e2908ff5620e3f9a6549a016efda3d4366339292092e28b91e460db76cb6bdefc0c900214fc6a

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            2a2c6cf977b3ea6c642ee8dd502c69f4

            SHA1

            23f14cffb60c9e0faf9dca28c826d8f04c0e8f69

            SHA256

            c356f7d98709cfcb487249ae7588a116e143221d20197af1ab5799d616182414

            SHA512

            a3a2b91b81242ed8e4cb7631414d4f790474c09037373a262b8e2908ff5620e3f9a6549a016efda3d4366339292092e28b91e460db76cb6bdefc0c900214fc6a

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            de63e332800bf70d33f23e8a3b715143

            SHA1

            5a298b594098a815ef00ec36e2197f6df318c76a

            SHA256

            411b84d964675a4c2f9fccf61303b660471f5565e20133111d543bcaf6a21e58

            SHA512

            ce10e035f5f75c5210b7775faf9de5a66ef1719bd4e2cbccb24d65b002f40c027151b471c3e18f98924ce6e9eb488293a1fed2cd672b18982bc1f6fafcd8584d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            de63e332800bf70d33f23e8a3b715143

            SHA1

            5a298b594098a815ef00ec36e2197f6df318c76a

            SHA256

            411b84d964675a4c2f9fccf61303b660471f5565e20133111d543bcaf6a21e58

            SHA512

            ce10e035f5f75c5210b7775faf9de5a66ef1719bd4e2cbccb24d65b002f40c027151b471c3e18f98924ce6e9eb488293a1fed2cd672b18982bc1f6fafcd8584d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            de63e332800bf70d33f23e8a3b715143

            SHA1

            5a298b594098a815ef00ec36e2197f6df318c76a

            SHA256

            411b84d964675a4c2f9fccf61303b660471f5565e20133111d543bcaf6a21e58

            SHA512

            ce10e035f5f75c5210b7775faf9de5a66ef1719bd4e2cbccb24d65b002f40c027151b471c3e18f98924ce6e9eb488293a1fed2cd672b18982bc1f6fafcd8584d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b8917a753905ca993ce02adbfdac0f43

            SHA1

            977aa3adea41e6743ad5c63e9e0b816255364ab0

            SHA256

            cf2e4fbbe4b2d21efdba320f97fe470dc28dbdc860adb5b558109140e945eb59

            SHA512

            65def418b6f7519c1092bd6149c05ff439c5c83a638c70e7268a48b490aebeefe199a90a4c3211a822a911da4cbe3df453cd2baa3a04a27b6fea34ba26ca560e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b8917a753905ca993ce02adbfdac0f43

            SHA1

            977aa3adea41e6743ad5c63e9e0b816255364ab0

            SHA256

            cf2e4fbbe4b2d21efdba320f97fe470dc28dbdc860adb5b558109140e945eb59

            SHA512

            65def418b6f7519c1092bd6149c05ff439c5c83a638c70e7268a48b490aebeefe199a90a4c3211a822a911da4cbe3df453cd2baa3a04a27b6fea34ba26ca560e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b8917a753905ca993ce02adbfdac0f43

            SHA1

            977aa3adea41e6743ad5c63e9e0b816255364ab0

            SHA256

            cf2e4fbbe4b2d21efdba320f97fe470dc28dbdc860adb5b558109140e945eb59

            SHA512

            65def418b6f7519c1092bd6149c05ff439c5c83a638c70e7268a48b490aebeefe199a90a4c3211a822a911da4cbe3df453cd2baa3a04a27b6fea34ba26ca560e

          • memory/420-160-0x0000000000000000-mapping.dmp

          • memory/2728-154-0x0000000000000000-mapping.dmp

          • memory/3056-138-0x0000000000000000-mapping.dmp

          • memory/3256-142-0x0000000000000000-mapping.dmp

          • memory/3660-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3660-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3660-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3788-167-0x0000000000000000-mapping.dmp

          • memory/4356-159-0x0000000000000000-mapping.dmp

          • memory/4448-166-0x0000000000000000-mapping.dmp

          • memory/4476-148-0x0000000000000000-mapping.dmp

          • memory/4804-136-0x0000000000000000-mapping.dmp

          • memory/4848-143-0x0000000000000000-mapping.dmp

          • memory/4916-141-0x0000000000000000-mapping.dmp