Analysis

  • max time kernel
    35s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 11:00

General

  • Target

    133dd3b204ef324ae917170ebb944bd1f1ce1a53bc32c09e0a8afa4bd306d6eb.exe

  • Size

    446KB

  • MD5

    8f986990e12ad73466dae00dea45233f

  • SHA1

    7c083553bcd02448ef6ca6987b1c79ea78d8add6

  • SHA256

    133dd3b204ef324ae917170ebb944bd1f1ce1a53bc32c09e0a8afa4bd306d6eb

  • SHA512

    97d9337bffefc49ccb8dbefa88b2c2481477f374c541770463ad3ccd6b4d676d2bfb137c24688d0cff28a5e330ac00a77ea95dae7d1f12cc84145ec8207da23f

  • SSDEEP

    12288:/JEv0c7lLEIaPIIvQtVjXF9hk5cX/B5Xz962dF2d4z3zZqu:/JEv0adDIotFX7hk5cXHE2dFtlqu

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\133dd3b204ef324ae917170ebb944bd1f1ce1a53bc32c09e0a8afa4bd306d6eb.exe
    "C:\Users\Admin\AppData\Local\Temp\133dd3b204ef324ae917170ebb944bd1f1ce1a53bc32c09e0a8afa4bd306d6eb.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:1612
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1708
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1692
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1940
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1960
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1256
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1748
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:816
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1232
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1736
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:320
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:520
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1540
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:956

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            70ce4269bb99845eac2996244a008950

            SHA1

            f22677efc67eefe540f75eaed8bf2e9e6dc0a73b

            SHA256

            bf5bbec26871158698862b38f34b96ffeb964ebcaf17462a7a0cfb4edcb5c008

            SHA512

            7007d9db000403157a8de4c9cb60cfdae70a84dcbee666abeb71dbf25fd95e03b5292d7fa46746dc5085733168ee283cbf475e86b7a37e51f9fde30aa6fb6fe0

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            07962502962531411ca4c6302d1087bc

            SHA1

            35e83d35f69b4286ae2fd16d1f5386564788547d

            SHA256

            a24fb0c6a322312d70e7b982cb28a58f1ab48419651b8f719da139c084fbbcaa

            SHA512

            ee88521c4bfd24dae22e5380cdad51d26f59cae4d96ab4f8e39f75a9e3fc979217ed5d4b06d0455f8a272491cb85e3168df8a42a2f393c8f99a80c5fe9441f77

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            663928ecbd5c04250f3e6cc3ffbc3447

            SHA1

            0e7c4e058ba82119aa9c922252376f44cde4bf11

            SHA256

            360c1ab7644ae7b25edf18e362901b9e00ed5c28901474ee081ef1112b195ae0

            SHA512

            b11b6312774d37bc30fb322e0667dfc68c495a7b719f1b9f7039cea2f35ce554d4572ff589f3afdfa23437135e619687f92d3e33a5b240d6731bc5578cadf5b6

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b4b5fbe2bb77fb2aded2e787da3bb526

            SHA1

            a2955ff2ee146cde63d1a111f0af559ba09fe7a9

            SHA256

            c8d3e2d5c41a687732714f914ddf6189b81ebe5b15ec500f061105c9fd61499e

            SHA512

            e8272259af91bd2496e8d897fca16e24185c16b4bc55b346485769abec0d012295345dd31aadcfd4a7d9a06dc94fa74e10c9433ddb5ed27f58b2524e28c1bce3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b4b5fbe2bb77fb2aded2e787da3bb526

            SHA1

            a2955ff2ee146cde63d1a111f0af559ba09fe7a9

            SHA256

            c8d3e2d5c41a687732714f914ddf6189b81ebe5b15ec500f061105c9fd61499e

            SHA512

            e8272259af91bd2496e8d897fca16e24185c16b4bc55b346485769abec0d012295345dd31aadcfd4a7d9a06dc94fa74e10c9433ddb5ed27f58b2524e28c1bce3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0bbd14223577fcf8046c15e56865eb9c

            SHA1

            5df0d46bf426739a5af359262b6db69aa6876c29

            SHA256

            c5cda6d1df8d098c18d74fbed55d733e6dee508c7a9fb0db9ac2b48c95cad5f3

            SHA512

            a15223a00ca84462f7be65cf1add6d619da3a808d4673908ad1eab5b8a3a83441542a8ea301a3e126844d1e5097abde70a32d9778bb8a034f8e368d91c3b4107

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0bbd14223577fcf8046c15e56865eb9c

            SHA1

            5df0d46bf426739a5af359262b6db69aa6876c29

            SHA256

            c5cda6d1df8d098c18d74fbed55d733e6dee508c7a9fb0db9ac2b48c95cad5f3

            SHA512

            a15223a00ca84462f7be65cf1add6d619da3a808d4673908ad1eab5b8a3a83441542a8ea301a3e126844d1e5097abde70a32d9778bb8a034f8e368d91c3b4107

          • \Users\Admin\AppData\Local\Temp\nsd764B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd764B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd764B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd764B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd764B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            70ce4269bb99845eac2996244a008950

            SHA1

            f22677efc67eefe540f75eaed8bf2e9e6dc0a73b

            SHA256

            bf5bbec26871158698862b38f34b96ffeb964ebcaf17462a7a0cfb4edcb5c008

            SHA512

            7007d9db000403157a8de4c9cb60cfdae70a84dcbee666abeb71dbf25fd95e03b5292d7fa46746dc5085733168ee283cbf475e86b7a37e51f9fde30aa6fb6fe0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            70ce4269bb99845eac2996244a008950

            SHA1

            f22677efc67eefe540f75eaed8bf2e9e6dc0a73b

            SHA256

            bf5bbec26871158698862b38f34b96ffeb964ebcaf17462a7a0cfb4edcb5c008

            SHA512

            7007d9db000403157a8de4c9cb60cfdae70a84dcbee666abeb71dbf25fd95e03b5292d7fa46746dc5085733168ee283cbf475e86b7a37e51f9fde30aa6fb6fe0

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            70ce4269bb99845eac2996244a008950

            SHA1

            f22677efc67eefe540f75eaed8bf2e9e6dc0a73b

            SHA256

            bf5bbec26871158698862b38f34b96ffeb964ebcaf17462a7a0cfb4edcb5c008

            SHA512

            7007d9db000403157a8de4c9cb60cfdae70a84dcbee666abeb71dbf25fd95e03b5292d7fa46746dc5085733168ee283cbf475e86b7a37e51f9fde30aa6fb6fe0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            07962502962531411ca4c6302d1087bc

            SHA1

            35e83d35f69b4286ae2fd16d1f5386564788547d

            SHA256

            a24fb0c6a322312d70e7b982cb28a58f1ab48419651b8f719da139c084fbbcaa

            SHA512

            ee88521c4bfd24dae22e5380cdad51d26f59cae4d96ab4f8e39f75a9e3fc979217ed5d4b06d0455f8a272491cb85e3168df8a42a2f393c8f99a80c5fe9441f77

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            07962502962531411ca4c6302d1087bc

            SHA1

            35e83d35f69b4286ae2fd16d1f5386564788547d

            SHA256

            a24fb0c6a322312d70e7b982cb28a58f1ab48419651b8f719da139c084fbbcaa

            SHA512

            ee88521c4bfd24dae22e5380cdad51d26f59cae4d96ab4f8e39f75a9e3fc979217ed5d4b06d0455f8a272491cb85e3168df8a42a2f393c8f99a80c5fe9441f77

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            663928ecbd5c04250f3e6cc3ffbc3447

            SHA1

            0e7c4e058ba82119aa9c922252376f44cde4bf11

            SHA256

            360c1ab7644ae7b25edf18e362901b9e00ed5c28901474ee081ef1112b195ae0

            SHA512

            b11b6312774d37bc30fb322e0667dfc68c495a7b719f1b9f7039cea2f35ce554d4572ff589f3afdfa23437135e619687f92d3e33a5b240d6731bc5578cadf5b6

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            b4b5fbe2bb77fb2aded2e787da3bb526

            SHA1

            a2955ff2ee146cde63d1a111f0af559ba09fe7a9

            SHA256

            c8d3e2d5c41a687732714f914ddf6189b81ebe5b15ec500f061105c9fd61499e

            SHA512

            e8272259af91bd2496e8d897fca16e24185c16b4bc55b346485769abec0d012295345dd31aadcfd4a7d9a06dc94fa74e10c9433ddb5ed27f58b2524e28c1bce3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            0bbd14223577fcf8046c15e56865eb9c

            SHA1

            5df0d46bf426739a5af359262b6db69aa6876c29

            SHA256

            c5cda6d1df8d098c18d74fbed55d733e6dee508c7a9fb0db9ac2b48c95cad5f3

            SHA512

            a15223a00ca84462f7be65cf1add6d619da3a808d4673908ad1eab5b8a3a83441542a8ea301a3e126844d1e5097abde70a32d9778bb8a034f8e368d91c3b4107

          • memory/320-85-0x0000000000000000-mapping.dmp

          • memory/520-86-0x0000000000000000-mapping.dmp

          • memory/816-75-0x0000000000000000-mapping.dmp

          • memory/1232-79-0x0000000000000000-mapping.dmp

          • memory/1256-63-0x0000000000000000-mapping.dmp

          • memory/1612-54-0x0000000076681000-0x0000000076683000-memory.dmp

            Filesize

            8KB

          • memory/1692-58-0x0000000000000000-mapping.dmp

          • memory/1708-57-0x0000000000000000-mapping.dmp

          • memory/1736-80-0x0000000000000000-mapping.dmp

          • memory/1748-69-0x0000000000000000-mapping.dmp

          • memory/1940-60-0x0000000000000000-mapping.dmp

          • memory/1960-61-0x0000000000000000-mapping.dmp