Analysis

  • max time kernel
    10s
  • max time network
    33s
  • 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

    bb34e24ca3afb6378f5358f021186a6504b9234a7aa9f58ede9cf3d0d85722fc.exe

  • Size

    603KB

  • MD5

    b4d2b9bdb356fe48e442d9403a09579f

  • SHA1

    d9d63e917496ae0ae0bafd36f0567d5a2a86d706

  • SHA256

    bb34e24ca3afb6378f5358f021186a6504b9234a7aa9f58ede9cf3d0d85722fc

  • SHA512

    90758b7961e625c45a4573b2c7bf39a870faed8d43a26e0a6e1fce9d8f93f6bf325d23cfe070eb34018a0bc735c42754605f30b479866a84487663b407432535

  • SSDEEP

    12288:qIny5DYTMIwtOXOuEkSCb3aNmljSrjjqibwsXmvypIru:sUTMnooreojfbEv2I

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\bb34e24ca3afb6378f5358f021186a6504b9234a7aa9f58ede9cf3d0d85722fc.exe
    "C:\Users\Admin\AppData\Local\Temp\bb34e24ca3afb6378f5358f021186a6504b9234a7aa9f58ede9cf3d0d85722fc.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:2032
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1988
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1164
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1652
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:768
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1500
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1800
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1060
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1224
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:380
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1192
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1268
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1248
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1196

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            19a8b94979ec9d6d40a8506a034bf15e

            SHA1

            af48d0fadc2dcf6f56a3cff886727012c8c56a56

            SHA256

            fa6c6460eb263754df9e2c9d885d2d9cbe03a297133d1055e24224c01301811d

            SHA512

            3aedf5af44c716e5373d2df273cb58c0324d353b4d8c9f3621633bc83e25ea0f61a0ce0844dd86dbfa9e74501a3b3a4d7bfe0a52cf9237fcc9824aadee533b4b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            dc73a136ce66fe62b52cfa618974f8a4

            SHA1

            ad3dea3f8fb3954d0951d3aa837fe31a63d5bbbd

            SHA256

            8e7525ebdf4cef71d0f82bd97a044f52662b713b5bb54c254c4bec9ea5eba09f

            SHA512

            86a32a6b1d6d6c14fbee5a2a1f2965b3020153bc416036e7292d3f2cd45f1622c7a1917ae2cf2a886d62b7a0b5bf74b1864d2072ebc5589f16e9295377add8d0

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            57724872984e4387f7331fe2a16f9860

            SHA1

            577ee4ef81a9b28cfdedb898b8dc99ba3ebc5de5

            SHA256

            8569ba53e10087dae7202355e67da1072f4acc37fdac8ba22d1b6bbb69780fe2

            SHA512

            4903631271ee996299f199cf66729e76052151b216ea5617382e42778ca19159e90928525ad98fc11c57399e6c0d9b923b5953f721e17682e16f8c7d6c45c708

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ad4fdfcb4197831d7b15d0e8fab07e1

            SHA1

            31849de593e715f0761ec3557e9a2c15ad71ae97

            SHA256

            65c786e5feb5e1b8caf73c63f5df294817c3a54c653ccbee8ceb6b309944a601

            SHA512

            ff63e9c8d26ba85d91931e8b6c60b283989b70f61d64e021b2ef34e6cc3665ecffa5c4a7a7ffa3f8821694405ba636014a5225e2d183ae74ad92c879af477148

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ad4fdfcb4197831d7b15d0e8fab07e1

            SHA1

            31849de593e715f0761ec3557e9a2c15ad71ae97

            SHA256

            65c786e5feb5e1b8caf73c63f5df294817c3a54c653ccbee8ceb6b309944a601

            SHA512

            ff63e9c8d26ba85d91931e8b6c60b283989b70f61d64e021b2ef34e6cc3665ecffa5c4a7a7ffa3f8821694405ba636014a5225e2d183ae74ad92c879af477148

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            79e929a5a09ecbb698010fd626c82ba1

            SHA1

            fe850f2d657fbb66cd5c1632bd50394d032f5201

            SHA256

            f42a78500759e3a39de026995798de8da87bf72015d54585456399da926d3b2e

            SHA512

            823ff8e5bc4fbc861864d487b52c5eee62397e8d0cd52aeb4e0958a216acc6a63bdf52d927987357f32e1f9124b4b16295644fb7d2a8d64fcbe9f1f8f989cca8

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            79e929a5a09ecbb698010fd626c82ba1

            SHA1

            fe850f2d657fbb66cd5c1632bd50394d032f5201

            SHA256

            f42a78500759e3a39de026995798de8da87bf72015d54585456399da926d3b2e

            SHA512

            823ff8e5bc4fbc861864d487b52c5eee62397e8d0cd52aeb4e0958a216acc6a63bdf52d927987357f32e1f9124b4b16295644fb7d2a8d64fcbe9f1f8f989cca8

          • \Users\Admin\AppData\Local\Temp\nst7A9F.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst7A9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst7A9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst7A9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst7A9F.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            19a8b94979ec9d6d40a8506a034bf15e

            SHA1

            af48d0fadc2dcf6f56a3cff886727012c8c56a56

            SHA256

            fa6c6460eb263754df9e2c9d885d2d9cbe03a297133d1055e24224c01301811d

            SHA512

            3aedf5af44c716e5373d2df273cb58c0324d353b4d8c9f3621633bc83e25ea0f61a0ce0844dd86dbfa9e74501a3b3a4d7bfe0a52cf9237fcc9824aadee533b4b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            19a8b94979ec9d6d40a8506a034bf15e

            SHA1

            af48d0fadc2dcf6f56a3cff886727012c8c56a56

            SHA256

            fa6c6460eb263754df9e2c9d885d2d9cbe03a297133d1055e24224c01301811d

            SHA512

            3aedf5af44c716e5373d2df273cb58c0324d353b4d8c9f3621633bc83e25ea0f61a0ce0844dd86dbfa9e74501a3b3a4d7bfe0a52cf9237fcc9824aadee533b4b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            19a8b94979ec9d6d40a8506a034bf15e

            SHA1

            af48d0fadc2dcf6f56a3cff886727012c8c56a56

            SHA256

            fa6c6460eb263754df9e2c9d885d2d9cbe03a297133d1055e24224c01301811d

            SHA512

            3aedf5af44c716e5373d2df273cb58c0324d353b4d8c9f3621633bc83e25ea0f61a0ce0844dd86dbfa9e74501a3b3a4d7bfe0a52cf9237fcc9824aadee533b4b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            dc73a136ce66fe62b52cfa618974f8a4

            SHA1

            ad3dea3f8fb3954d0951d3aa837fe31a63d5bbbd

            SHA256

            8e7525ebdf4cef71d0f82bd97a044f52662b713b5bb54c254c4bec9ea5eba09f

            SHA512

            86a32a6b1d6d6c14fbee5a2a1f2965b3020153bc416036e7292d3f2cd45f1622c7a1917ae2cf2a886d62b7a0b5bf74b1864d2072ebc5589f16e9295377add8d0

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            dc73a136ce66fe62b52cfa618974f8a4

            SHA1

            ad3dea3f8fb3954d0951d3aa837fe31a63d5bbbd

            SHA256

            8e7525ebdf4cef71d0f82bd97a044f52662b713b5bb54c254c4bec9ea5eba09f

            SHA512

            86a32a6b1d6d6c14fbee5a2a1f2965b3020153bc416036e7292d3f2cd45f1622c7a1917ae2cf2a886d62b7a0b5bf74b1864d2072ebc5589f16e9295377add8d0

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            57724872984e4387f7331fe2a16f9860

            SHA1

            577ee4ef81a9b28cfdedb898b8dc99ba3ebc5de5

            SHA256

            8569ba53e10087dae7202355e67da1072f4acc37fdac8ba22d1b6bbb69780fe2

            SHA512

            4903631271ee996299f199cf66729e76052151b216ea5617382e42778ca19159e90928525ad98fc11c57399e6c0d9b923b5953f721e17682e16f8c7d6c45c708

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6ad4fdfcb4197831d7b15d0e8fab07e1

            SHA1

            31849de593e715f0761ec3557e9a2c15ad71ae97

            SHA256

            65c786e5feb5e1b8caf73c63f5df294817c3a54c653ccbee8ceb6b309944a601

            SHA512

            ff63e9c8d26ba85d91931e8b6c60b283989b70f61d64e021b2ef34e6cc3665ecffa5c4a7a7ffa3f8821694405ba636014a5225e2d183ae74ad92c879af477148

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            79e929a5a09ecbb698010fd626c82ba1

            SHA1

            fe850f2d657fbb66cd5c1632bd50394d032f5201

            SHA256

            f42a78500759e3a39de026995798de8da87bf72015d54585456399da926d3b2e

            SHA512

            823ff8e5bc4fbc861864d487b52c5eee62397e8d0cd52aeb4e0958a216acc6a63bdf52d927987357f32e1f9124b4b16295644fb7d2a8d64fcbe9f1f8f989cca8

          • memory/380-81-0x0000000000000000-mapping.dmp

          • memory/768-62-0x0000000000000000-mapping.dmp

          • memory/1060-76-0x0000000000000000-mapping.dmp

          • memory/1164-58-0x0000000000000000-mapping.dmp

          • memory/1192-86-0x0000000000000000-mapping.dmp

          • memory/1224-80-0x0000000000000000-mapping.dmp

          • memory/1268-87-0x0000000000000000-mapping.dmp

          • memory/1500-64-0x0000000000000000-mapping.dmp

          • memory/1652-61-0x0000000000000000-mapping.dmp

          • memory/1800-70-0x0000000000000000-mapping.dmp

          • memory/1988-57-0x0000000000000000-mapping.dmp

          • memory/2032-54-0x0000000075C21000-0x0000000075C23000-memory.dmp

            Filesize

            8KB

          • memory/2032-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2032-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB