Analysis

  • max time kernel
    142s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:12

General

  • Target

    caf53acc2e71ad62e02fe95b6d7607adb83f1d1e8eefdebcc957f79deaf87f2b.exe

  • Size

    602KB

  • MD5

    85cd3fd516f20696964e8e5f22c29fcb

  • SHA1

    94231052773773e522f00f27f19a4e94aa5ff9ca

  • SHA256

    caf53acc2e71ad62e02fe95b6d7607adb83f1d1e8eefdebcc957f79deaf87f2b

  • SHA512

    b9d33b155f456abb4504034d1a540a7841876e54376219d7a41a3023363b0b6d1e1c6b866b84067e7219dd3caa72041612dd136d4ca1c108e80ce0dca467ae0d

  • SSDEEP

    12288:LIny5DYTiPn3zTlZdKQ/4iA5XsW0j1cJwVAojwpsShWOFlxL:zUTon3zTlaK4D5XB2VnosNclxL

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\caf53acc2e71ad62e02fe95b6d7607adb83f1d1e8eefdebcc957f79deaf87f2b.exe
    "C:\Users\Admin\AppData\Local\Temp\caf53acc2e71ad62e02fe95b6d7607adb83f1d1e8eefdebcc957f79deaf87f2b.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:3952
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4752
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4880
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:4384
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1784
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4284
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3296
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:228
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2636
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4696
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3676
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4852
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:3044
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4552

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsjCE72.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            17dbee6cb146b61dbba8f523f6c356e8

            SHA1

            f2eff479ee21540667e269931eafce644723af6c

            SHA256

            3d79d282b118e08d2caaaa3acfe7ea3dc80f7e87e9ece8c20b555e1f8a74abe0

            SHA512

            63f7ce020d111d84878f7584fad77629cc72da0b21a0afcb200ace02216d021789229cbce7d2c10cebca28d6dcaac93c8408671e6058255a72d332c46bf1307f

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            17dbee6cb146b61dbba8f523f6c356e8

            SHA1

            f2eff479ee21540667e269931eafce644723af6c

            SHA256

            3d79d282b118e08d2caaaa3acfe7ea3dc80f7e87e9ece8c20b555e1f8a74abe0

            SHA512

            63f7ce020d111d84878f7584fad77629cc72da0b21a0afcb200ace02216d021789229cbce7d2c10cebca28d6dcaac93c8408671e6058255a72d332c46bf1307f

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            17dbee6cb146b61dbba8f523f6c356e8

            SHA1

            f2eff479ee21540667e269931eafce644723af6c

            SHA256

            3d79d282b118e08d2caaaa3acfe7ea3dc80f7e87e9ece8c20b555e1f8a74abe0

            SHA512

            63f7ce020d111d84878f7584fad77629cc72da0b21a0afcb200ace02216d021789229cbce7d2c10cebca28d6dcaac93c8408671e6058255a72d332c46bf1307f

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            17dbee6cb146b61dbba8f523f6c356e8

            SHA1

            f2eff479ee21540667e269931eafce644723af6c

            SHA256

            3d79d282b118e08d2caaaa3acfe7ea3dc80f7e87e9ece8c20b555e1f8a74abe0

            SHA512

            63f7ce020d111d84878f7584fad77629cc72da0b21a0afcb200ace02216d021789229cbce7d2c10cebca28d6dcaac93c8408671e6058255a72d332c46bf1307f

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0ee7982c284a9c63f4ae7b252a2de7af

            SHA1

            a0ff0271292b43eaa5ec2015a69be7b455b5b769

            SHA256

            3bd4b30ba444aa721bc0ab90b345d7f4224956914d7f4a751ca84222e7164835

            SHA512

            d575d95d31e073447913d0f80ea0ef853637dfb6d092e0fd80865cf175c4be862927f7528891ea30c52da6a3f321f46e0deaec65c0efeac35b5abb3a7fa453e2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0ee7982c284a9c63f4ae7b252a2de7af

            SHA1

            a0ff0271292b43eaa5ec2015a69be7b455b5b769

            SHA256

            3bd4b30ba444aa721bc0ab90b345d7f4224956914d7f4a751ca84222e7164835

            SHA512

            d575d95d31e073447913d0f80ea0ef853637dfb6d092e0fd80865cf175c4be862927f7528891ea30c52da6a3f321f46e0deaec65c0efeac35b5abb3a7fa453e2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            0ee7982c284a9c63f4ae7b252a2de7af

            SHA1

            a0ff0271292b43eaa5ec2015a69be7b455b5b769

            SHA256

            3bd4b30ba444aa721bc0ab90b345d7f4224956914d7f4a751ca84222e7164835

            SHA512

            d575d95d31e073447913d0f80ea0ef853637dfb6d092e0fd80865cf175c4be862927f7528891ea30c52da6a3f321f46e0deaec65c0efeac35b5abb3a7fa453e2

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            71833e84f79d7bc30692cd5854297778

            SHA1

            612f73ed31a390d1a2cd47ab70d35f11824005a0

            SHA256

            d0e26ffd7faac66c4581f6fc8e02085739a4a548d5f167971516031ba878043c

            SHA512

            9ad01a6787dff72369e41e255b29faebf45115766d13c4f25682ef889cc2b8e27854a94fde3db4ce921bfac177d9d1917e9c2d222c2f5f24dc43ee2f66525e25

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            71833e84f79d7bc30692cd5854297778

            SHA1

            612f73ed31a390d1a2cd47ab70d35f11824005a0

            SHA256

            d0e26ffd7faac66c4581f6fc8e02085739a4a548d5f167971516031ba878043c

            SHA512

            9ad01a6787dff72369e41e255b29faebf45115766d13c4f25682ef889cc2b8e27854a94fde3db4ce921bfac177d9d1917e9c2d222c2f5f24dc43ee2f66525e25

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6b736d53e5b4793cb18d5bef88560e3f

            SHA1

            a6832e7e2c4163ee9d5c3421c78e28e5ada2de36

            SHA256

            e72eb6692ceaf296360d93ae51dc8b8c799d10d3e85958564e6a8fe165c6a0ab

            SHA512

            d62c17740316b9f22140d00c67a1e3cbea5244458fe037f94057921514f9d8312b2a001236edad3839dc8ec9521a1d15c78321b3084f8536c5a62fa343c321d2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6b736d53e5b4793cb18d5bef88560e3f

            SHA1

            a6832e7e2c4163ee9d5c3421c78e28e5ada2de36

            SHA256

            e72eb6692ceaf296360d93ae51dc8b8c799d10d3e85958564e6a8fe165c6a0ab

            SHA512

            d62c17740316b9f22140d00c67a1e3cbea5244458fe037f94057921514f9d8312b2a001236edad3839dc8ec9521a1d15c78321b3084f8536c5a62fa343c321d2

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            6b736d53e5b4793cb18d5bef88560e3f

            SHA1

            a6832e7e2c4163ee9d5c3421c78e28e5ada2de36

            SHA256

            e72eb6692ceaf296360d93ae51dc8b8c799d10d3e85958564e6a8fe165c6a0ab

            SHA512

            d62c17740316b9f22140d00c67a1e3cbea5244458fe037f94057921514f9d8312b2a001236edad3839dc8ec9521a1d15c78321b3084f8536c5a62fa343c321d2

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            3ae50e8ae33e951213f0862ba7be0123

            SHA1

            8676ae510435c86607e706e23282cd3bb8da689a

            SHA256

            c265130cb944dad998270d0efb8c51b61a8a473fb1a901a8c040baa13ed30392

            SHA512

            0bfef86bb02ffe43abf2341a81af541d5c8b566912a6a1d432003d98a8539d1c118e6dac96d2bcfd695a6694eabb277bcb9f5a874cfb10f42e6bea60a089065b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            3ae50e8ae33e951213f0862ba7be0123

            SHA1

            8676ae510435c86607e706e23282cd3bb8da689a

            SHA256

            c265130cb944dad998270d0efb8c51b61a8a473fb1a901a8c040baa13ed30392

            SHA512

            0bfef86bb02ffe43abf2341a81af541d5c8b566912a6a1d432003d98a8539d1c118e6dac96d2bcfd695a6694eabb277bcb9f5a874cfb10f42e6bea60a089065b

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            3ae50e8ae33e951213f0862ba7be0123

            SHA1

            8676ae510435c86607e706e23282cd3bb8da689a

            SHA256

            c265130cb944dad998270d0efb8c51b61a8a473fb1a901a8c040baa13ed30392

            SHA512

            0bfef86bb02ffe43abf2341a81af541d5c8b566912a6a1d432003d98a8539d1c118e6dac96d2bcfd695a6694eabb277bcb9f5a874cfb10f42e6bea60a089065b

          • memory/228-154-0x0000000000000000-mapping.dmp

          • memory/1784-142-0x0000000000000000-mapping.dmp

          • memory/2636-159-0x0000000000000000-mapping.dmp

          • memory/3296-148-0x0000000000000000-mapping.dmp

          • memory/3676-166-0x0000000000000000-mapping.dmp

          • memory/3952-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3952-169-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3952-133-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4284-143-0x0000000000000000-mapping.dmp

          • memory/4384-141-0x0000000000000000-mapping.dmp

          • memory/4696-160-0x0000000000000000-mapping.dmp

          • memory/4752-137-0x0000000000000000-mapping.dmp

          • memory/4852-167-0x0000000000000000-mapping.dmp

          • memory/4880-138-0x0000000000000000-mapping.dmp