Analysis

  • max time kernel
    42s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:24

General

  • Target

    6661533d672b7c7ecab81c11e2666be4f41c955cee5652242bbe7e97c367ca63.exe

  • Size

    602KB

  • MD5

    7619e7f3182f9438b75862d4201bd3b9

  • SHA1

    4494ef3fcbaab934465e19545695bef20e65a3a2

  • SHA256

    6661533d672b7c7ecab81c11e2666be4f41c955cee5652242bbe7e97c367ca63

  • SHA512

    bf9274d6f8381709ca2d051e9839652aaaf1ce1868e8ab40ca90eaec18e659e88eed4d9152794e968ea00b452c622595b7dcae90408befc6296fe6d4b77ee2b6

  • SSDEEP

    12288:3Iny5DYTgKGE6gzKGneOzCz/CFrKvCQviqufZVJM2R2t/V:fUTgK7nzzG/m+vpMZVlAtd

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\6661533d672b7c7ecab81c11e2666be4f41c955cee5652242bbe7e97c367ca63.exe
    "C:\Users\Admin\AppData\Local\Temp\6661533d672b7c7ecab81c11e2666be4f41c955cee5652242bbe7e97c367ca63.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:1752
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1552
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:768
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:560
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:576
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1108
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:980
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1476
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1272
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1604
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:876
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1364
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:776
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1056

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            44c17bc19a26bf84145fd9afd90d9418

            SHA1

            a154425cb005073c4ef09cfbe75f75a0d48f6e5a

            SHA256

            e3b3492cbc2863a5b394dd8a688f7987b323e92d9bb19d363a0e1e491d94f404

            SHA512

            750ce44df758997726bf146100fbdf7414288863ed2183da20d20b1c817f7791ee32dfbfa3bd3c74dee2007283c5c6d080054e1b54d3f32e6a0801fe63bdff3b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fd4172e99d19f7f52f894a006482ca4c

            SHA1

            ffdc8bb7fab452a1dcee90b6f5474421e6b3951d

            SHA256

            d9836407cce58af8e50d9d2bb2ef6253d1cd4754402b707d2c6c8e3139265904

            SHA512

            dc7358c4d3a77e5242efdf7fcf02071a355d8478ba72f724fdf9fd4c2fd09c1f9a2c4883aa0cfe1ff6f9326f49c8f2088502ec8d95ad3d72f7ff07f5a5087019

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f4a3830489d2b5ea11aced03592424a9

            SHA1

            1e07edabf0f24d6878dca6592ee5f797cd3b7ad4

            SHA256

            b11bc2898480708b208934b8f41ed0aaa09e0c0c3b15db3550668f94285de1c4

            SHA512

            cfe68860f4044762229bef4cc43f89ec279c501ddcb80c8c217fb87a86f7f24cd0263a88305af9be6f8ff9bbcce16c291e2e01551ba352b57ea630b3f549c132

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            76dabc2a2e077b5da31f1f1f18a933ca

            SHA1

            67710249dff4a9c010e1df8c02993d9e83a0e695

            SHA256

            c20acc9661c4a38afded1402020313b83aef984cdfa3dad39331d07dc3d894da

            SHA512

            e57af762952910374e1952ffbc72694dc5cd1a597830a0c9253d2443bedb87e5ade1769027106ba0071d275803c0bf61f5a49be363614e8ee5fd2c64733fb8bf

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            76dabc2a2e077b5da31f1f1f18a933ca

            SHA1

            67710249dff4a9c010e1df8c02993d9e83a0e695

            SHA256

            c20acc9661c4a38afded1402020313b83aef984cdfa3dad39331d07dc3d894da

            SHA512

            e57af762952910374e1952ffbc72694dc5cd1a597830a0c9253d2443bedb87e5ade1769027106ba0071d275803c0bf61f5a49be363614e8ee5fd2c64733fb8bf

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b8c3c06991251574d0ca2bedfcd21536

            SHA1

            8b90e3f6bbbfd848c009adea9506415979efb28d

            SHA256

            dbdd245f4895b289fbc701cd0fc72bf7a66cc80162d1ad0e0b903da74cb0c7ea

            SHA512

            b0cdf0e5d07916f03645967a6924d37f3a67686e29b4cfaa0b2360f0ce2d493fd02c0dfeb4db7d12dc4191aca63327122f8b334a7ab8d58b80704cd797cf56e9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b8c3c06991251574d0ca2bedfcd21536

            SHA1

            8b90e3f6bbbfd848c009adea9506415979efb28d

            SHA256

            dbdd245f4895b289fbc701cd0fc72bf7a66cc80162d1ad0e0b903da74cb0c7ea

            SHA512

            b0cdf0e5d07916f03645967a6924d37f3a67686e29b4cfaa0b2360f0ce2d493fd02c0dfeb4db7d12dc4191aca63327122f8b334a7ab8d58b80704cd797cf56e9

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsy2178.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            44c17bc19a26bf84145fd9afd90d9418

            SHA1

            a154425cb005073c4ef09cfbe75f75a0d48f6e5a

            SHA256

            e3b3492cbc2863a5b394dd8a688f7987b323e92d9bb19d363a0e1e491d94f404

            SHA512

            750ce44df758997726bf146100fbdf7414288863ed2183da20d20b1c817f7791ee32dfbfa3bd3c74dee2007283c5c6d080054e1b54d3f32e6a0801fe63bdff3b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            44c17bc19a26bf84145fd9afd90d9418

            SHA1

            a154425cb005073c4ef09cfbe75f75a0d48f6e5a

            SHA256

            e3b3492cbc2863a5b394dd8a688f7987b323e92d9bb19d363a0e1e491d94f404

            SHA512

            750ce44df758997726bf146100fbdf7414288863ed2183da20d20b1c817f7791ee32dfbfa3bd3c74dee2007283c5c6d080054e1b54d3f32e6a0801fe63bdff3b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            44c17bc19a26bf84145fd9afd90d9418

            SHA1

            a154425cb005073c4ef09cfbe75f75a0d48f6e5a

            SHA256

            e3b3492cbc2863a5b394dd8a688f7987b323e92d9bb19d363a0e1e491d94f404

            SHA512

            750ce44df758997726bf146100fbdf7414288863ed2183da20d20b1c817f7791ee32dfbfa3bd3c74dee2007283c5c6d080054e1b54d3f32e6a0801fe63bdff3b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fd4172e99d19f7f52f894a006482ca4c

            SHA1

            ffdc8bb7fab452a1dcee90b6f5474421e6b3951d

            SHA256

            d9836407cce58af8e50d9d2bb2ef6253d1cd4754402b707d2c6c8e3139265904

            SHA512

            dc7358c4d3a77e5242efdf7fcf02071a355d8478ba72f724fdf9fd4c2fd09c1f9a2c4883aa0cfe1ff6f9326f49c8f2088502ec8d95ad3d72f7ff07f5a5087019

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            fd4172e99d19f7f52f894a006482ca4c

            SHA1

            ffdc8bb7fab452a1dcee90b6f5474421e6b3951d

            SHA256

            d9836407cce58af8e50d9d2bb2ef6253d1cd4754402b707d2c6c8e3139265904

            SHA512

            dc7358c4d3a77e5242efdf7fcf02071a355d8478ba72f724fdf9fd4c2fd09c1f9a2c4883aa0cfe1ff6f9326f49c8f2088502ec8d95ad3d72f7ff07f5a5087019

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            f4a3830489d2b5ea11aced03592424a9

            SHA1

            1e07edabf0f24d6878dca6592ee5f797cd3b7ad4

            SHA256

            b11bc2898480708b208934b8f41ed0aaa09e0c0c3b15db3550668f94285de1c4

            SHA512

            cfe68860f4044762229bef4cc43f89ec279c501ddcb80c8c217fb87a86f7f24cd0263a88305af9be6f8ff9bbcce16c291e2e01551ba352b57ea630b3f549c132

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            76dabc2a2e077b5da31f1f1f18a933ca

            SHA1

            67710249dff4a9c010e1df8c02993d9e83a0e695

            SHA256

            c20acc9661c4a38afded1402020313b83aef984cdfa3dad39331d07dc3d894da

            SHA512

            e57af762952910374e1952ffbc72694dc5cd1a597830a0c9253d2443bedb87e5ade1769027106ba0071d275803c0bf61f5a49be363614e8ee5fd2c64733fb8bf

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            b8c3c06991251574d0ca2bedfcd21536

            SHA1

            8b90e3f6bbbfd848c009adea9506415979efb28d

            SHA256

            dbdd245f4895b289fbc701cd0fc72bf7a66cc80162d1ad0e0b903da74cb0c7ea

            SHA512

            b0cdf0e5d07916f03645967a6924d37f3a67686e29b4cfaa0b2360f0ce2d493fd02c0dfeb4db7d12dc4191aca63327122f8b334a7ab8d58b80704cd797cf56e9

          • memory/560-61-0x0000000000000000-mapping.dmp

          • memory/576-62-0x0000000000000000-mapping.dmp

          • memory/768-59-0x0000000000000000-mapping.dmp

          • memory/876-86-0x0000000000000000-mapping.dmp

          • memory/980-70-0x0000000000000000-mapping.dmp

          • memory/1108-64-0x0000000000000000-mapping.dmp

          • memory/1272-80-0x0000000000000000-mapping.dmp

          • memory/1364-87-0x0000000000000000-mapping.dmp

          • memory/1476-76-0x0000000000000000-mapping.dmp

          • memory/1552-57-0x0000000000000000-mapping.dmp

          • memory/1604-81-0x0000000000000000-mapping.dmp

          • memory/1752-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1752-54-0x0000000075111000-0x0000000075113000-memory.dmp

            Filesize

            8KB

          • memory/1752-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB