Analysis

  • max time kernel
    46s
  • max time network
    29s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:20

General

  • Target

    87036ef38b67e7061e2fd365e41d3cae496d4d1d48f47e455f755202e81d5c1c.exe

  • Size

    602KB

  • MD5

    3fb6adf4f29e2766106365e220744fd0

  • SHA1

    1a49b92da29b09d9bd2160f0bdec9583b631d3ea

  • SHA256

    87036ef38b67e7061e2fd365e41d3cae496d4d1d48f47e455f755202e81d5c1c

  • SHA512

    c72209aa96e3249b3a618bdbca9ce222d7f68648e7b5645ab863b7b9a65261eac9c4cdb18207eaaa0acb59279dc665618e1e4d491d524815a967c33e0cec153e

  • SSDEEP

    12288:NIny5DYTzx14oWmKad7d57Kc3NGhIc1/4904ncUYJ:ZUTznfK8d57J3NGhF1JDU

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\87036ef38b67e7061e2fd365e41d3cae496d4d1d48f47e455f755202e81d5c1c.exe
    "C:\Users\Admin\AppData\Local\Temp\87036ef38b67e7061e2fd365e41d3cae496d4d1d48f47e455f755202e81d5c1c.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:960
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:364
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:588
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:768
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:520
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2024
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1548
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1996
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1708
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1884
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1416
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1580
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1768
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1748

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            646d3367916cf6ed90ad09cdd5c0074e

            SHA1

            8391088fd14fe250b088066395fab336ff7ee5c0

            SHA256

            868cf495021d1dc3b83737dcacc80b47b717839d5242562d59f81213c4866590

            SHA512

            3b8713ec92cd6a17369f77fe7a229a70eb332b88cccb4ae0edeec791e6f287adc519385a4578d37654a1301881344de116da38615d139f7d21bb2d2b8aa2bdb1

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            28f09e35e8dcf91c87cc1f1a47bbaf2a

            SHA1

            942a326287c24d7c3134804f64e0fcd34fabff30

            SHA256

            d7acd54f8fc9f6f270b039610769cd398ded0eedd1e7ac4a7198020ffdf05db7

            SHA512

            db8cf4355d42b32d9a455427d91a6bad7bc92e19e7ef0e6a1188b4554139489a0a6122e19021a04441d69e6ae1ca0efaff20f7c63f7c0b3333e1af20451a5580

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7c14a25b6eabb8ce0b1f65e9d43908ea

            SHA1

            14d2532d30a72feca84c1cba61cf6449a6a83103

            SHA256

            b006b142f61267ae3bd91cf2dced517c1ed5499ecb95531389da3be0417bb6b4

            SHA512

            21ddbcead56211fa9e9392ddb08377d6f79acef6225048f6052f47fdf889ca3fd687778ca6a0a5637465fd7559094350c97085298726a46cf55b8f9367db71db

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ff6c3ecb382f16bf87d2ce2664d4b2e1

            SHA1

            fff2519f02ec17f2c7241c397de3519ad6148569

            SHA256

            be1de4d402d839c1bb7b97337f601114b8f3c65faa0bfaa15a69d1bb724864fa

            SHA512

            0bd37764ba9490e8e76dd59095d7c6084d1387378ac35385f122f9aaacf79b27ad4394bb81bab7e40c361305ed546745ba502ff52079d1bf988ab41844c6b408

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ff6c3ecb382f16bf87d2ce2664d4b2e1

            SHA1

            fff2519f02ec17f2c7241c397de3519ad6148569

            SHA256

            be1de4d402d839c1bb7b97337f601114b8f3c65faa0bfaa15a69d1bb724864fa

            SHA512

            0bd37764ba9490e8e76dd59095d7c6084d1387378ac35385f122f9aaacf79b27ad4394bb81bab7e40c361305ed546745ba502ff52079d1bf988ab41844c6b408

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1807b142fd74ed4fe056b488107ea28a

            SHA1

            b30cfd7b5f67c4aea5ecbaec4c8c844a086f2134

            SHA256

            83fd5361062bc2f8f564d1928af98f4532a90330c4202e68e748c280b3c53565

            SHA512

            19e923f35600c67fccc9085c4270f9c6ecf317bb29f6198e38f0b2f3387053306dff258a0bd43b491908c8cd542afde47dcf7b4824705434b48d50ab2201592e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1807b142fd74ed4fe056b488107ea28a

            SHA1

            b30cfd7b5f67c4aea5ecbaec4c8c844a086f2134

            SHA256

            83fd5361062bc2f8f564d1928af98f4532a90330c4202e68e748c280b3c53565

            SHA512

            19e923f35600c67fccc9085c4270f9c6ecf317bb29f6198e38f0b2f3387053306dff258a0bd43b491908c8cd542afde47dcf7b4824705434b48d50ab2201592e

          • \Users\Admin\AppData\Local\Temp\nsd3D9F.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd3D9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3D9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3D9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd3D9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            646d3367916cf6ed90ad09cdd5c0074e

            SHA1

            8391088fd14fe250b088066395fab336ff7ee5c0

            SHA256

            868cf495021d1dc3b83737dcacc80b47b717839d5242562d59f81213c4866590

            SHA512

            3b8713ec92cd6a17369f77fe7a229a70eb332b88cccb4ae0edeec791e6f287adc519385a4578d37654a1301881344de116da38615d139f7d21bb2d2b8aa2bdb1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            646d3367916cf6ed90ad09cdd5c0074e

            SHA1

            8391088fd14fe250b088066395fab336ff7ee5c0

            SHA256

            868cf495021d1dc3b83737dcacc80b47b717839d5242562d59f81213c4866590

            SHA512

            3b8713ec92cd6a17369f77fe7a229a70eb332b88cccb4ae0edeec791e6f287adc519385a4578d37654a1301881344de116da38615d139f7d21bb2d2b8aa2bdb1

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            646d3367916cf6ed90ad09cdd5c0074e

            SHA1

            8391088fd14fe250b088066395fab336ff7ee5c0

            SHA256

            868cf495021d1dc3b83737dcacc80b47b717839d5242562d59f81213c4866590

            SHA512

            3b8713ec92cd6a17369f77fe7a229a70eb332b88cccb4ae0edeec791e6f287adc519385a4578d37654a1301881344de116da38615d139f7d21bb2d2b8aa2bdb1

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            28f09e35e8dcf91c87cc1f1a47bbaf2a

            SHA1

            942a326287c24d7c3134804f64e0fcd34fabff30

            SHA256

            d7acd54f8fc9f6f270b039610769cd398ded0eedd1e7ac4a7198020ffdf05db7

            SHA512

            db8cf4355d42b32d9a455427d91a6bad7bc92e19e7ef0e6a1188b4554139489a0a6122e19021a04441d69e6ae1ca0efaff20f7c63f7c0b3333e1af20451a5580

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            28f09e35e8dcf91c87cc1f1a47bbaf2a

            SHA1

            942a326287c24d7c3134804f64e0fcd34fabff30

            SHA256

            d7acd54f8fc9f6f270b039610769cd398ded0eedd1e7ac4a7198020ffdf05db7

            SHA512

            db8cf4355d42b32d9a455427d91a6bad7bc92e19e7ef0e6a1188b4554139489a0a6122e19021a04441d69e6ae1ca0efaff20f7c63f7c0b3333e1af20451a5580

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7c14a25b6eabb8ce0b1f65e9d43908ea

            SHA1

            14d2532d30a72feca84c1cba61cf6449a6a83103

            SHA256

            b006b142f61267ae3bd91cf2dced517c1ed5499ecb95531389da3be0417bb6b4

            SHA512

            21ddbcead56211fa9e9392ddb08377d6f79acef6225048f6052f47fdf889ca3fd687778ca6a0a5637465fd7559094350c97085298726a46cf55b8f9367db71db

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ff6c3ecb382f16bf87d2ce2664d4b2e1

            SHA1

            fff2519f02ec17f2c7241c397de3519ad6148569

            SHA256

            be1de4d402d839c1bb7b97337f601114b8f3c65faa0bfaa15a69d1bb724864fa

            SHA512

            0bd37764ba9490e8e76dd59095d7c6084d1387378ac35385f122f9aaacf79b27ad4394bb81bab7e40c361305ed546745ba502ff52079d1bf988ab41844c6b408

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            1807b142fd74ed4fe056b488107ea28a

            SHA1

            b30cfd7b5f67c4aea5ecbaec4c8c844a086f2134

            SHA256

            83fd5361062bc2f8f564d1928af98f4532a90330c4202e68e748c280b3c53565

            SHA512

            19e923f35600c67fccc9085c4270f9c6ecf317bb29f6198e38f0b2f3387053306dff258a0bd43b491908c8cd542afde47dcf7b4824705434b48d50ab2201592e

          • memory/364-57-0x0000000000000000-mapping.dmp

          • memory/520-62-0x0000000000000000-mapping.dmp

          • memory/588-59-0x0000000000000000-mapping.dmp

          • memory/768-61-0x0000000000000000-mapping.dmp

          • memory/960-54-0x00000000760B1000-0x00000000760B3000-memory.dmp

            Filesize

            8KB

          • memory/960-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/960-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1416-86-0x0000000000000000-mapping.dmp

          • memory/1548-70-0x0000000000000000-mapping.dmp

          • memory/1580-87-0x0000000000000000-mapping.dmp

          • memory/1708-80-0x0000000000000000-mapping.dmp

          • memory/1884-81-0x0000000000000000-mapping.dmp

          • memory/1996-76-0x0000000000000000-mapping.dmp

          • memory/2024-64-0x0000000000000000-mapping.dmp