Analysis

  • max time kernel
    64s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:14

General

  • Target

    bcd7c10f1ff908d5bb43d106a98489dd5c50b13910ba6eef3502ff18d5eb22a1.exe

  • Size

    603KB

  • MD5

    5478b6e9a08c730f55347f00089b32c7

  • SHA1

    6f41e2e9a39d720bb9d04b9bf8425553143c112c

  • SHA256

    bcd7c10f1ff908d5bb43d106a98489dd5c50b13910ba6eef3502ff18d5eb22a1

  • SHA512

    4399f0d556fb2b9338ea931eaf27ecc56f892980c955fad7e89ee52662cce5c542fb59fa4760fd2ad241e7eeeaa91c7cf8e78132de74e89d696cf83902601c1c

  • SSDEEP

    12288:NIny5DYTmIub17I6bu6H5/epKlUs2ACYdX4uhPNJ8d8UkJ8wNN:ZUTmZb17Iiuo52pKFrdX40FqGXJ8

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\bcd7c10f1ff908d5bb43d106a98489dd5c50b13910ba6eef3502ff18d5eb22a1.exe
    "C:\Users\Admin\AppData\Local\Temp\bcd7c10f1ff908d5bb43d106a98489dd5c50b13910ba6eef3502ff18d5eb22a1.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:1120
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1712
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1056
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1152
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:524
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1480
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1532
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1528
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1788
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1784
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1928
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1060
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1692
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1940

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1a637a048b832b6a86d15f553cb7de5f

            SHA1

            169573860fb75b20848907cc88aee78860aa0f02

            SHA256

            d8c8e59c35d88dc754a3433407b0cfe12f49370468dd0fa6706ae56481f4cd70

            SHA512

            c7013e990fb7c3c61a9ffd5dc06f4d61d22ae2b1cba76bdc0f773dc24fcf01409dded34d17ccfcfcb6b19a0e6eadfc6847b799056aba40394a52ef1e4e2e0d0b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f9a00710bf796bcbf4a0354495515ccf

            SHA1

            934e8e4fa41e27a2663f383f9d9b667ad1c7fa3c

            SHA256

            423bf4b2ee9a1dc040d7ad84c10d8691b1505d9eaa3e0db439afdda2e7309231

            SHA512

            7c1fbe0e257d274820ae0e109a34144f19f48eac1581d04cc6b6a63f606e9f9016a53146876d3286f55d90f34e1d4001c51db096e969977603a48167ffae147f

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b34e3946038feb6131b4e21af629f805

            SHA1

            c10dcc432b3f7f7f7ddcbc26f26e8739bcb25e33

            SHA256

            ac7c07f2bcdee7159fb29ceae0ebca415cb2e4051c46fba9abfddd436f02148c

            SHA512

            ebe73858a9135d7fb9616d5d29aafd4ed68dae1f5d2a65c967d1977071116382431947bd5b390d9b06d8ba300916e43497c785c8d5f96d5ceb2cf0dc04eb56c4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4351dea40a4a197fb964f7dadc68bb3d

            SHA1

            890933464a92bf757a1d5501501d8dcc45cdf855

            SHA256

            7b1275f3e723867e5316fec1f2367717663a81add9befd1107e38a276abd1647

            SHA512

            48bbe9e4ab19b1b0800124b47c26e8832fc162b2faea4d4490d911885d3e6994f56857a7ca315505022871b00a7efb6a27c4a5b6a2be4a51efcc19de747207fd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4351dea40a4a197fb964f7dadc68bb3d

            SHA1

            890933464a92bf757a1d5501501d8dcc45cdf855

            SHA256

            7b1275f3e723867e5316fec1f2367717663a81add9befd1107e38a276abd1647

            SHA512

            48bbe9e4ab19b1b0800124b47c26e8832fc162b2faea4d4490d911885d3e6994f56857a7ca315505022871b00a7efb6a27c4a5b6a2be4a51efcc19de747207fd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c518d9f5c6e0069fd0e1e252a95f7893

            SHA1

            65bb2dae2f926504a983646021610a67c6bc672e

            SHA256

            a520b234b5764c14897f5003d35dc7bb5d429432548023c9f805e24e66709bc8

            SHA512

            19a0f735dbfdded394e388c64ad93fab8bd9ad48fb774edfe540a5fde097dd591efc680d1990a46a37c306e8b35bda91255e1f92cb58186b91a422b28a7532eb

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c518d9f5c6e0069fd0e1e252a95f7893

            SHA1

            65bb2dae2f926504a983646021610a67c6bc672e

            SHA256

            a520b234b5764c14897f5003d35dc7bb5d429432548023c9f805e24e66709bc8

            SHA512

            19a0f735dbfdded394e388c64ad93fab8bd9ad48fb774edfe540a5fde097dd591efc680d1990a46a37c306e8b35bda91255e1f92cb58186b91a422b28a7532eb

          • \Users\Admin\AppData\Local\Temp\nse4270.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nse4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nse4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1a637a048b832b6a86d15f553cb7de5f

            SHA1

            169573860fb75b20848907cc88aee78860aa0f02

            SHA256

            d8c8e59c35d88dc754a3433407b0cfe12f49370468dd0fa6706ae56481f4cd70

            SHA512

            c7013e990fb7c3c61a9ffd5dc06f4d61d22ae2b1cba76bdc0f773dc24fcf01409dded34d17ccfcfcb6b19a0e6eadfc6847b799056aba40394a52ef1e4e2e0d0b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1a637a048b832b6a86d15f553cb7de5f

            SHA1

            169573860fb75b20848907cc88aee78860aa0f02

            SHA256

            d8c8e59c35d88dc754a3433407b0cfe12f49370468dd0fa6706ae56481f4cd70

            SHA512

            c7013e990fb7c3c61a9ffd5dc06f4d61d22ae2b1cba76bdc0f773dc24fcf01409dded34d17ccfcfcb6b19a0e6eadfc6847b799056aba40394a52ef1e4e2e0d0b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1a637a048b832b6a86d15f553cb7de5f

            SHA1

            169573860fb75b20848907cc88aee78860aa0f02

            SHA256

            d8c8e59c35d88dc754a3433407b0cfe12f49370468dd0fa6706ae56481f4cd70

            SHA512

            c7013e990fb7c3c61a9ffd5dc06f4d61d22ae2b1cba76bdc0f773dc24fcf01409dded34d17ccfcfcb6b19a0e6eadfc6847b799056aba40394a52ef1e4e2e0d0b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f9a00710bf796bcbf4a0354495515ccf

            SHA1

            934e8e4fa41e27a2663f383f9d9b667ad1c7fa3c

            SHA256

            423bf4b2ee9a1dc040d7ad84c10d8691b1505d9eaa3e0db439afdda2e7309231

            SHA512

            7c1fbe0e257d274820ae0e109a34144f19f48eac1581d04cc6b6a63f606e9f9016a53146876d3286f55d90f34e1d4001c51db096e969977603a48167ffae147f

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            f9a00710bf796bcbf4a0354495515ccf

            SHA1

            934e8e4fa41e27a2663f383f9d9b667ad1c7fa3c

            SHA256

            423bf4b2ee9a1dc040d7ad84c10d8691b1505d9eaa3e0db439afdda2e7309231

            SHA512

            7c1fbe0e257d274820ae0e109a34144f19f48eac1581d04cc6b6a63f606e9f9016a53146876d3286f55d90f34e1d4001c51db096e969977603a48167ffae147f

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b34e3946038feb6131b4e21af629f805

            SHA1

            c10dcc432b3f7f7f7ddcbc26f26e8739bcb25e33

            SHA256

            ac7c07f2bcdee7159fb29ceae0ebca415cb2e4051c46fba9abfddd436f02148c

            SHA512

            ebe73858a9135d7fb9616d5d29aafd4ed68dae1f5d2a65c967d1977071116382431947bd5b390d9b06d8ba300916e43497c785c8d5f96d5ceb2cf0dc04eb56c4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            4351dea40a4a197fb964f7dadc68bb3d

            SHA1

            890933464a92bf757a1d5501501d8dcc45cdf855

            SHA256

            7b1275f3e723867e5316fec1f2367717663a81add9befd1107e38a276abd1647

            SHA512

            48bbe9e4ab19b1b0800124b47c26e8832fc162b2faea4d4490d911885d3e6994f56857a7ca315505022871b00a7efb6a27c4a5b6a2be4a51efcc19de747207fd

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            c518d9f5c6e0069fd0e1e252a95f7893

            SHA1

            65bb2dae2f926504a983646021610a67c6bc672e

            SHA256

            a520b234b5764c14897f5003d35dc7bb5d429432548023c9f805e24e66709bc8

            SHA512

            19a0f735dbfdded394e388c64ad93fab8bd9ad48fb774edfe540a5fde097dd591efc680d1990a46a37c306e8b35bda91255e1f92cb58186b91a422b28a7532eb

          • memory/524-62-0x0000000000000000-mapping.dmp

          • memory/1056-59-0x0000000000000000-mapping.dmp

          • memory/1060-88-0x0000000000000000-mapping.dmp

          • memory/1120-54-0x0000000075291000-0x0000000075293000-memory.dmp

            Filesize

            8KB

          • memory/1120-79-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1120-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1120-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1152-61-0x0000000000000000-mapping.dmp

          • memory/1480-64-0x0000000000000000-mapping.dmp

          • memory/1528-76-0x0000000000000000-mapping.dmp

          • memory/1532-70-0x0000000000000000-mapping.dmp

          • memory/1712-58-0x0000000000000000-mapping.dmp

          • memory/1784-82-0x0000000000000000-mapping.dmp

          • memory/1788-81-0x0000000000000000-mapping.dmp

          • memory/1928-87-0x0000000000000000-mapping.dmp