Analysis

  • max time kernel
    147s
  • max time network
    159s
  • 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 10:27

General

  • Target

    41daca9e753defbf0f099126ba2ad608497950f640f7129aa193ec516c7218c3.exe

  • Size

    602KB

  • MD5

    6ea3983ed2e6118f8bb205444237f8d0

  • SHA1

    986e4234b8439a64baad6b5793a638676d0e837f

  • SHA256

    41daca9e753defbf0f099126ba2ad608497950f640f7129aa193ec516c7218c3

  • SHA512

    8dafbcc1a04b94e34af9685911998ea2b47cac65b881700b76f31e9755e2c351e8c9be6613d180a8ef6b82d856d88c1f8635cc338fe75885fb94645a677849fb

  • SSDEEP

    12288:XIny5DYTWUV+XveBjSvBOmuWFbtvp4Ag7alYMZMc2w6FT:/UTWDkjba5pLU3

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\41daca9e753defbf0f099126ba2ad608497950f640f7129aa193ec516c7218c3.exe
    "C:\Users\Admin\AppData\Local\Temp\41daca9e753defbf0f099126ba2ad608497950f640f7129aa193ec516c7218c3.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:736
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1408
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:564
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1924
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:4808
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4848
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5044
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2412
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:692
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:4732
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:3552
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:3064
          • 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:3076
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4316

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsf9699.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            31a484028685210f3e511e41110b6d0b

            SHA1

            a2b0f9e56386d4ccbc4dfcb97a55d36ad2228b59

            SHA256

            edfd627e0b2a8d78c572c1177f3b1d00f42bcf9be630d9ddd4d59497e0b90548

            SHA512

            f82cd0f9faa7243bcd16da61913caf535241541950ea96d9822f24e1348a62e56ae9af02d239ef57139931ca62727003db608a32d9c3f9a103d81f57aa7ecb2e

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            31a484028685210f3e511e41110b6d0b

            SHA1

            a2b0f9e56386d4ccbc4dfcb97a55d36ad2228b59

            SHA256

            edfd627e0b2a8d78c572c1177f3b1d00f42bcf9be630d9ddd4d59497e0b90548

            SHA512

            f82cd0f9faa7243bcd16da61913caf535241541950ea96d9822f24e1348a62e56ae9af02d239ef57139931ca62727003db608a32d9c3f9a103d81f57aa7ecb2e

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            31a484028685210f3e511e41110b6d0b

            SHA1

            a2b0f9e56386d4ccbc4dfcb97a55d36ad2228b59

            SHA256

            edfd627e0b2a8d78c572c1177f3b1d00f42bcf9be630d9ddd4d59497e0b90548

            SHA512

            f82cd0f9faa7243bcd16da61913caf535241541950ea96d9822f24e1348a62e56ae9af02d239ef57139931ca62727003db608a32d9c3f9a103d81f57aa7ecb2e

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            31a484028685210f3e511e41110b6d0b

            SHA1

            a2b0f9e56386d4ccbc4dfcb97a55d36ad2228b59

            SHA256

            edfd627e0b2a8d78c572c1177f3b1d00f42bcf9be630d9ddd4d59497e0b90548

            SHA512

            f82cd0f9faa7243bcd16da61913caf535241541950ea96d9822f24e1348a62e56ae9af02d239ef57139931ca62727003db608a32d9c3f9a103d81f57aa7ecb2e

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b557cffebf58d92726ad19e0d1e44b27

            SHA1

            bd899b858f456eec54f2398ef780aa16f95d47e5

            SHA256

            7e0346f192b6b098dcf373b092a3093c31b413b279b064a108a4d0cc4878b1a3

            SHA512

            de82588417d38e29308fb734fa0ef73e2fc152488b9e8b4e03243904c9b6f05ed8b186769c726f80a79558f2bc24ceeabd2de78e47644ae3308a3e23112e3137

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b557cffebf58d92726ad19e0d1e44b27

            SHA1

            bd899b858f456eec54f2398ef780aa16f95d47e5

            SHA256

            7e0346f192b6b098dcf373b092a3093c31b413b279b064a108a4d0cc4878b1a3

            SHA512

            de82588417d38e29308fb734fa0ef73e2fc152488b9e8b4e03243904c9b6f05ed8b186769c726f80a79558f2bc24ceeabd2de78e47644ae3308a3e23112e3137

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b557cffebf58d92726ad19e0d1e44b27

            SHA1

            bd899b858f456eec54f2398ef780aa16f95d47e5

            SHA256

            7e0346f192b6b098dcf373b092a3093c31b413b279b064a108a4d0cc4878b1a3

            SHA512

            de82588417d38e29308fb734fa0ef73e2fc152488b9e8b4e03243904c9b6f05ed8b186769c726f80a79558f2bc24ceeabd2de78e47644ae3308a3e23112e3137

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            624835259b0a86e1ea9cfc380f334cf8

            SHA1

            5b182e3c08fbcdd6f880d475d6337b3eca8e2c42

            SHA256

            e475497d4d337bbd2db2d371ae29a3344ae4a6975297a3d6ff70b1310ac89377

            SHA512

            0f85ff42a90832fd50f1292a8c758c06fd8e48f514651cbce8619c5d8755e40f06bfbae4fdb33c1171a973d00c972132e7af4bab54fc2ee95b78995d87a3441a

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            624835259b0a86e1ea9cfc380f334cf8

            SHA1

            5b182e3c08fbcdd6f880d475d6337b3eca8e2c42

            SHA256

            e475497d4d337bbd2db2d371ae29a3344ae4a6975297a3d6ff70b1310ac89377

            SHA512

            0f85ff42a90832fd50f1292a8c758c06fd8e48f514651cbce8619c5d8755e40f06bfbae4fdb33c1171a973d00c972132e7af4bab54fc2ee95b78995d87a3441a

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            4cb294318fb067afa8964801f7067439

            SHA1

            7f5aac44cc30f15c2dd3f0aae4b9ca7c09d38d6e

            SHA256

            872fc386022cb8d02ff269fda2e9d3fcfc0f9801eba1ac96ee9f080785aa5120

            SHA512

            57293c7a2c0623927151aa1f2d0d4aeb636e871eeacc07415a4c72030862f460a6f004309096d4e025a3630cb57d9c697f3c9ab4667c7ea4a48c1078fd9919eb

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            4cb294318fb067afa8964801f7067439

            SHA1

            7f5aac44cc30f15c2dd3f0aae4b9ca7c09d38d6e

            SHA256

            872fc386022cb8d02ff269fda2e9d3fcfc0f9801eba1ac96ee9f080785aa5120

            SHA512

            57293c7a2c0623927151aa1f2d0d4aeb636e871eeacc07415a4c72030862f460a6f004309096d4e025a3630cb57d9c697f3c9ab4667c7ea4a48c1078fd9919eb

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            4cb294318fb067afa8964801f7067439

            SHA1

            7f5aac44cc30f15c2dd3f0aae4b9ca7c09d38d6e

            SHA256

            872fc386022cb8d02ff269fda2e9d3fcfc0f9801eba1ac96ee9f080785aa5120

            SHA512

            57293c7a2c0623927151aa1f2d0d4aeb636e871eeacc07415a4c72030862f460a6f004309096d4e025a3630cb57d9c697f3c9ab4667c7ea4a48c1078fd9919eb

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            354a7bea1d82462a4dc7de36792b5b0d

            SHA1

            df882c384ae713f03de54852d86e5ec26659b522

            SHA256

            0946718a1fea55b039f28e93deb6f6048dc91961d646043aa3aade47c1f1f715

            SHA512

            7ac3584391f76c465879e0d95b54784db1d4fdd835045de10fec5361c5f695b7c0d171e3c493ff34a3f1e70b8eb974f4d5414c450ca2d688eae7da76fc6d21d4

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            354a7bea1d82462a4dc7de36792b5b0d

            SHA1

            df882c384ae713f03de54852d86e5ec26659b522

            SHA256

            0946718a1fea55b039f28e93deb6f6048dc91961d646043aa3aade47c1f1f715

            SHA512

            7ac3584391f76c465879e0d95b54784db1d4fdd835045de10fec5361c5f695b7c0d171e3c493ff34a3f1e70b8eb974f4d5414c450ca2d688eae7da76fc6d21d4

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            354a7bea1d82462a4dc7de36792b5b0d

            SHA1

            df882c384ae713f03de54852d86e5ec26659b522

            SHA256

            0946718a1fea55b039f28e93deb6f6048dc91961d646043aa3aade47c1f1f715

            SHA512

            7ac3584391f76c465879e0d95b54784db1d4fdd835045de10fec5361c5f695b7c0d171e3c493ff34a3f1e70b8eb974f4d5414c450ca2d688eae7da76fc6d21d4

          • memory/564-137-0x0000000000000000-mapping.dmp
          • memory/692-158-0x0000000000000000-mapping.dmp
          • memory/736-132-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/736-168-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1408-136-0x0000000000000000-mapping.dmp
          • memory/1924-140-0x0000000000000000-mapping.dmp
          • memory/2412-153-0x0000000000000000-mapping.dmp
          • memory/3064-166-0x0000000000000000-mapping.dmp
          • memory/3552-165-0x0000000000000000-mapping.dmp
          • memory/4732-159-0x0000000000000000-mapping.dmp
          • memory/4808-141-0x0000000000000000-mapping.dmp
          • memory/4848-142-0x0000000000000000-mapping.dmp
          • memory/5044-147-0x0000000000000000-mapping.dmp