Analysis

  • max time kernel
    91s
  • max time network
    148s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:21

General

  • Target

    81225e8ac17c07d9451f2354546370259a5f5c1fddfa055cc2cbb06c1214d991.exe

  • Size

    603KB

  • MD5

    3a788ce2952bc4c0e9a42c0c3df48260

  • SHA1

    74cca5eea9244e0fe3f7f154be39834f346a7f0b

  • SHA256

    81225e8ac17c07d9451f2354546370259a5f5c1fddfa055cc2cbb06c1214d991

  • SHA512

    6fe63e9b45e07d17946263e319ce78d10736151d0e86c7d25795e372d2c33800fed8035280635629d5e61c94c39a607df58544296ab99b8c5038aa1b075a79ce

  • SSDEEP

    12288:IIny5DYTmIWcgiXa2eQLqky0YjledhBm0cv7MtvqFW:GUTmRcIsY5ohM7MtvF

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\81225e8ac17c07d9451f2354546370259a5f5c1fddfa055cc2cbb06c1214d991.exe
    "C:\Users\Admin\AppData\Local\Temp\81225e8ac17c07d9451f2354546370259a5f5c1fddfa055cc2cbb06c1214d991.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:1992
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4388
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:3380
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1964
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3192
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4964
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:4476
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:3084
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:5036
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:5096
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:4528
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4740
          • 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:4444
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2220

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsoEA38.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7238df211e341c944d94ed780351588f

            SHA1

            c510b3a32589487c3dbf1a6a1a33e6aec4eefc73

            SHA256

            b131f595d322b5b88e6377d29372d5ae665847de9921ca554ccba38a2ae65177

            SHA512

            4392a991b9ce9b0a13ad7f9eec139360c353abc14c94251e8c86a53515fdb301a998f8a786f7a116cfb875afd34b5b82c382c6de5f8dcf571ace129a07f66d6b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7238df211e341c944d94ed780351588f

            SHA1

            c510b3a32589487c3dbf1a6a1a33e6aec4eefc73

            SHA256

            b131f595d322b5b88e6377d29372d5ae665847de9921ca554ccba38a2ae65177

            SHA512

            4392a991b9ce9b0a13ad7f9eec139360c353abc14c94251e8c86a53515fdb301a998f8a786f7a116cfb875afd34b5b82c382c6de5f8dcf571ace129a07f66d6b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7238df211e341c944d94ed780351588f

            SHA1

            c510b3a32589487c3dbf1a6a1a33e6aec4eefc73

            SHA256

            b131f595d322b5b88e6377d29372d5ae665847de9921ca554ccba38a2ae65177

            SHA512

            4392a991b9ce9b0a13ad7f9eec139360c353abc14c94251e8c86a53515fdb301a998f8a786f7a116cfb875afd34b5b82c382c6de5f8dcf571ace129a07f66d6b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            7238df211e341c944d94ed780351588f

            SHA1

            c510b3a32589487c3dbf1a6a1a33e6aec4eefc73

            SHA256

            b131f595d322b5b88e6377d29372d5ae665847de9921ca554ccba38a2ae65177

            SHA512

            4392a991b9ce9b0a13ad7f9eec139360c353abc14c94251e8c86a53515fdb301a998f8a786f7a116cfb875afd34b5b82c382c6de5f8dcf571ace129a07f66d6b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            760ff50a229313f03a79a28ba3e323fb

            SHA1

            857780e0d34668d0781824bd2319ae7c9f3dca54

            SHA256

            79083eab7508fcf12e8976afe2fce238c02df4c62540e751504e09d8feccdea8

            SHA512

            69d903e7947e34bc6907e230260b53b6646ecc1088a6f5773cf9169bf80669e333f895eb4710ee4fe75802e19dbabbd6f5b0663b768cfc2368ab9df27301c7cc

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            760ff50a229313f03a79a28ba3e323fb

            SHA1

            857780e0d34668d0781824bd2319ae7c9f3dca54

            SHA256

            79083eab7508fcf12e8976afe2fce238c02df4c62540e751504e09d8feccdea8

            SHA512

            69d903e7947e34bc6907e230260b53b6646ecc1088a6f5773cf9169bf80669e333f895eb4710ee4fe75802e19dbabbd6f5b0663b768cfc2368ab9df27301c7cc

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            760ff50a229313f03a79a28ba3e323fb

            SHA1

            857780e0d34668d0781824bd2319ae7c9f3dca54

            SHA256

            79083eab7508fcf12e8976afe2fce238c02df4c62540e751504e09d8feccdea8

            SHA512

            69d903e7947e34bc6907e230260b53b6646ecc1088a6f5773cf9169bf80669e333f895eb4710ee4fe75802e19dbabbd6f5b0663b768cfc2368ab9df27301c7cc

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a821b8ff616c54abeee4b83e2540191d

            SHA1

            0425bcce0248d7619187e3460c3d17ea93a087a9

            SHA256

            1dfbc982628768b6541102774cf66b8cb251154c103d08cfe6d23844518efef7

            SHA512

            f3e371b26b8a297d94978c7975c7a06e330506fff10c249e097136e9014b1477635241390aa0eb188094cd2b733d69512571b241bfb9b60f34b4b8b41626702b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a821b8ff616c54abeee4b83e2540191d

            SHA1

            0425bcce0248d7619187e3460c3d17ea93a087a9

            SHA256

            1dfbc982628768b6541102774cf66b8cb251154c103d08cfe6d23844518efef7

            SHA512

            f3e371b26b8a297d94978c7975c7a06e330506fff10c249e097136e9014b1477635241390aa0eb188094cd2b733d69512571b241bfb9b60f34b4b8b41626702b

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f08309d9b026bb01ffc39d20b6dad06

            SHA1

            d0121e8d4228e91e62dd134d18291674d8a58a4b

            SHA256

            0e8332dec3d59cb844932edd37bad184a3eefe4afce1ad254c544c8909c5e5b9

            SHA512

            8c1fdd839f0329fc3f36032582b9b2bbe1ae58636e858a83f01a76f5037f4508f11b8013497e49515a41e0d9391b42a03362a4d66dfbf3b17318e663d894de9d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f08309d9b026bb01ffc39d20b6dad06

            SHA1

            d0121e8d4228e91e62dd134d18291674d8a58a4b

            SHA256

            0e8332dec3d59cb844932edd37bad184a3eefe4afce1ad254c544c8909c5e5b9

            SHA512

            8c1fdd839f0329fc3f36032582b9b2bbe1ae58636e858a83f01a76f5037f4508f11b8013497e49515a41e0d9391b42a03362a4d66dfbf3b17318e663d894de9d

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7f08309d9b026bb01ffc39d20b6dad06

            SHA1

            d0121e8d4228e91e62dd134d18291674d8a58a4b

            SHA256

            0e8332dec3d59cb844932edd37bad184a3eefe4afce1ad254c544c8909c5e5b9

            SHA512

            8c1fdd839f0329fc3f36032582b9b2bbe1ae58636e858a83f01a76f5037f4508f11b8013497e49515a41e0d9391b42a03362a4d66dfbf3b17318e663d894de9d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f1e3ca36b7328e8bebccdefa714fbff3

            SHA1

            97ab5d67f016f37241aba1aa1a7187a6d304257b

            SHA256

            44f9c073e1c3d94349fd250182758149d0a3b0461990bc4db76bbbddee3606db

            SHA512

            09e89c78e5a0a21a30e452182137d0568882cbf4d3056f8e01bcd032239ebe2ba615e41f0c6c5828d9f5ef1c1a60a2e16bef139e530616e7912bba15eb45cc8d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f1e3ca36b7328e8bebccdefa714fbff3

            SHA1

            97ab5d67f016f37241aba1aa1a7187a6d304257b

            SHA256

            44f9c073e1c3d94349fd250182758149d0a3b0461990bc4db76bbbddee3606db

            SHA512

            09e89c78e5a0a21a30e452182137d0568882cbf4d3056f8e01bcd032239ebe2ba615e41f0c6c5828d9f5ef1c1a60a2e16bef139e530616e7912bba15eb45cc8d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            f1e3ca36b7328e8bebccdefa714fbff3

            SHA1

            97ab5d67f016f37241aba1aa1a7187a6d304257b

            SHA256

            44f9c073e1c3d94349fd250182758149d0a3b0461990bc4db76bbbddee3606db

            SHA512

            09e89c78e5a0a21a30e452182137d0568882cbf4d3056f8e01bcd032239ebe2ba615e41f0c6c5828d9f5ef1c1a60a2e16bef139e530616e7912bba15eb45cc8d

          • memory/1964-140-0x0000000000000000-mapping.dmp

          • memory/1992-137-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1992-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/3084-153-0x0000000000000000-mapping.dmp

          • memory/3192-141-0x0000000000000000-mapping.dmp

          • memory/3380-136-0x0000000000000000-mapping.dmp

          • memory/4388-135-0x0000000000000000-mapping.dmp

          • memory/4476-147-0x0000000000000000-mapping.dmp

          • memory/4528-165-0x0000000000000000-mapping.dmp

          • memory/4740-166-0x0000000000000000-mapping.dmp

          • memory/4964-142-0x0000000000000000-mapping.dmp

          • memory/5036-158-0x0000000000000000-mapping.dmp

          • memory/5096-159-0x0000000000000000-mapping.dmp