Analysis

  • max time kernel
    37s
  • 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 10:17

General

  • Target

    a0f151c043438801928169f3472a49ede436bba6e2ba548e70547fc213f0c023.exe

  • Size

    601KB

  • MD5

    635d1dc3cec7845739198dc5d899744d

  • SHA1

    0ba6aa10917ad64f2554f9fbf68746d21468c196

  • SHA256

    a0f151c043438801928169f3472a49ede436bba6e2ba548e70547fc213f0c023

  • SHA512

    f72b67137fcbeda78a21bf1620bba9aabfedee79d8f2d26b00b6b8a1bc7e00e6367be7909d480a747101ac156010f5c0855e6eb50a157eb61026050710cc4588

  • SSDEEP

    12288:uIny5DYTSqVi1q/MVhcCmQ2g41cCKgAWR9tFFG1et:wUTSqiY/8hcC2g41tKIHG

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\a0f151c043438801928169f3472a49ede436bba6e2ba548e70547fc213f0c023.exe
    "C:\Users\Admin\AppData\Local\Temp\a0f151c043438801928169f3472a49ede436bba6e2ba548e70547fc213f0c023.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:1672
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1608
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:760
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1656
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1188
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:820
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1072
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1664
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1676
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:828
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1504
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1784
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1700

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63e731e10cd6e98c5192dc6426fb3394

            SHA1

            fc0965404869f23d0b13d8d50ac938a5618ac487

            SHA256

            96eb603ae426a3b4eb7f45abf6b2a27020602631acbd62037ff4963d0114119d

            SHA512

            25838ee075998d0e3063662556f63b899d90b9560bd3ab33859489ffc096f4c8e15bb1662ff4a09353e86e97efca539725a6baf61dff3bd09167b2355934861b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            07c38349b47817b604a077a3d58d8eff

            SHA1

            e8a89cf37c75a9a0e088303422d3cab4ecb2b58b

            SHA256

            f251ee9fcd97b375425c29507980eb43f83d2fb6963ee8f70adac2e64593fb00

            SHA512

            8624a3342e403733f0a49235dbe53f17b4d17abdcd67d0b1f175062b0a44f51be221c8c9bff1be4f888f5026b20cffa2c67ee8f96bbcc6726c42f944c69aa53d

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6996f04ea820d894df875a21d2538911

            SHA1

            016c6e658305fc7d19cfbbdb5cfe808f91a7510d

            SHA256

            44e41737f11f5563a5dd88e53ba2ba1b3cc1610372cea4b41f86d27d2b076af6

            SHA512

            5e0b3e0ec75f984e26fa355ecfce99101da755456b587d7d00d45ba04947aedd866be34fdfde242d4e7a0072de159bea402460d1afebcf124905e5e67419ec34

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            827316d31f81a35cbefc92fe93a2d05f

            SHA1

            0f5aefa46210394752abe59664b57c22ed41429c

            SHA256

            136bcbd9f3d99bf27e4e6581fca0c9a72d16da8aea812b522c003830ad56fc19

            SHA512

            b3ef5e19b7950bce6f5115dbdfcd09ad9af8270e808cac9f9023ac3478b353e210a6d504bbf0dfbfd33b4afc7be1396e245026046558f1880ba811f2a249ed3c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            827316d31f81a35cbefc92fe93a2d05f

            SHA1

            0f5aefa46210394752abe59664b57c22ed41429c

            SHA256

            136bcbd9f3d99bf27e4e6581fca0c9a72d16da8aea812b522c003830ad56fc19

            SHA512

            b3ef5e19b7950bce6f5115dbdfcd09ad9af8270e808cac9f9023ac3478b353e210a6d504bbf0dfbfd33b4afc7be1396e245026046558f1880ba811f2a249ed3c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eef852424663048caff8839e49b30d17

            SHA1

            099de914f75e2d8a9cb269bba6db396852e4b5ea

            SHA256

            6ee11e61dd4073a78022e92e4abc5a2cc06763f9a2c6db13f249881496540f08

            SHA512

            42ef6c74d65503f5cb3b198bc3a1278336b81ba9c1d6d0d5a910a0518458da5664de9b02eff8f94273c2aced428eff6f61613cb726febc50498bf00b44ae15f4

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eef852424663048caff8839e49b30d17

            SHA1

            099de914f75e2d8a9cb269bba6db396852e4b5ea

            SHA256

            6ee11e61dd4073a78022e92e4abc5a2cc06763f9a2c6db13f249881496540f08

            SHA512

            42ef6c74d65503f5cb3b198bc3a1278336b81ba9c1d6d0d5a910a0518458da5664de9b02eff8f94273c2aced428eff6f61613cb726febc50498bf00b44ae15f4

          • \Users\Admin\AppData\Local\Temp\nso4270.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso4270.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63e731e10cd6e98c5192dc6426fb3394

            SHA1

            fc0965404869f23d0b13d8d50ac938a5618ac487

            SHA256

            96eb603ae426a3b4eb7f45abf6b2a27020602631acbd62037ff4963d0114119d

            SHA512

            25838ee075998d0e3063662556f63b899d90b9560bd3ab33859489ffc096f4c8e15bb1662ff4a09353e86e97efca539725a6baf61dff3bd09167b2355934861b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63e731e10cd6e98c5192dc6426fb3394

            SHA1

            fc0965404869f23d0b13d8d50ac938a5618ac487

            SHA256

            96eb603ae426a3b4eb7f45abf6b2a27020602631acbd62037ff4963d0114119d

            SHA512

            25838ee075998d0e3063662556f63b899d90b9560bd3ab33859489ffc096f4c8e15bb1662ff4a09353e86e97efca539725a6baf61dff3bd09167b2355934861b

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            63e731e10cd6e98c5192dc6426fb3394

            SHA1

            fc0965404869f23d0b13d8d50ac938a5618ac487

            SHA256

            96eb603ae426a3b4eb7f45abf6b2a27020602631acbd62037ff4963d0114119d

            SHA512

            25838ee075998d0e3063662556f63b899d90b9560bd3ab33859489ffc096f4c8e15bb1662ff4a09353e86e97efca539725a6baf61dff3bd09167b2355934861b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            07c38349b47817b604a077a3d58d8eff

            SHA1

            e8a89cf37c75a9a0e088303422d3cab4ecb2b58b

            SHA256

            f251ee9fcd97b375425c29507980eb43f83d2fb6963ee8f70adac2e64593fb00

            SHA512

            8624a3342e403733f0a49235dbe53f17b4d17abdcd67d0b1f175062b0a44f51be221c8c9bff1be4f888f5026b20cffa2c67ee8f96bbcc6726c42f944c69aa53d

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            07c38349b47817b604a077a3d58d8eff

            SHA1

            e8a89cf37c75a9a0e088303422d3cab4ecb2b58b

            SHA256

            f251ee9fcd97b375425c29507980eb43f83d2fb6963ee8f70adac2e64593fb00

            SHA512

            8624a3342e403733f0a49235dbe53f17b4d17abdcd67d0b1f175062b0a44f51be221c8c9bff1be4f888f5026b20cffa2c67ee8f96bbcc6726c42f944c69aa53d

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6996f04ea820d894df875a21d2538911

            SHA1

            016c6e658305fc7d19cfbbdb5cfe808f91a7510d

            SHA256

            44e41737f11f5563a5dd88e53ba2ba1b3cc1610372cea4b41f86d27d2b076af6

            SHA512

            5e0b3e0ec75f984e26fa355ecfce99101da755456b587d7d00d45ba04947aedd866be34fdfde242d4e7a0072de159bea402460d1afebcf124905e5e67419ec34

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            827316d31f81a35cbefc92fe93a2d05f

            SHA1

            0f5aefa46210394752abe59664b57c22ed41429c

            SHA256

            136bcbd9f3d99bf27e4e6581fca0c9a72d16da8aea812b522c003830ad56fc19

            SHA512

            b3ef5e19b7950bce6f5115dbdfcd09ad9af8270e808cac9f9023ac3478b353e210a6d504bbf0dfbfd33b4afc7be1396e245026046558f1880ba811f2a249ed3c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            eef852424663048caff8839e49b30d17

            SHA1

            099de914f75e2d8a9cb269bba6db396852e4b5ea

            SHA256

            6ee11e61dd4073a78022e92e4abc5a2cc06763f9a2c6db13f249881496540f08

            SHA512

            42ef6c74d65503f5cb3b198bc3a1278336b81ba9c1d6d0d5a910a0518458da5664de9b02eff8f94273c2aced428eff6f61613cb726febc50498bf00b44ae15f4

          • memory/760-61-0x0000000000000000-mapping.dmp

          • memory/820-70-0x0000000000000000-mapping.dmp

          • memory/828-86-0x0000000000000000-mapping.dmp

          • memory/1072-76-0x0000000000000000-mapping.dmp

          • memory/1188-64-0x0000000000000000-mapping.dmp

          • memory/1504-87-0x0000000000000000-mapping.dmp

          • memory/1608-59-0x0000000000000000-mapping.dmp

          • memory/1656-62-0x0000000000000000-mapping.dmp

          • memory/1664-80-0x0000000000000000-mapping.dmp

          • memory/1672-54-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

            Filesize

            8KB

          • memory/1672-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1672-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1676-81-0x0000000000000000-mapping.dmp

          • memory/2036-58-0x0000000000000000-mapping.dmp