Analysis

  • max time kernel
    28s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:16

General

  • Target

    aaa61569b98601851c75d27aa39f63404efcf5bcb63482e312a55282b29340cd.exe

  • Size

    603KB

  • MD5

    d6571024fa19008406bd56839f06a9be

  • SHA1

    0376972f02d28665a9baaeaf23581169087088ef

  • SHA256

    aaa61569b98601851c75d27aa39f63404efcf5bcb63482e312a55282b29340cd

  • SHA512

    1bab29762be9bc9493ab442d58177ebaff10f5d172aaeef0a6371ed7b5e7922942694d99f8574cbd950c717d04a5357d732a27e087a46c9cc7354173e56507f0

  • SSDEEP

    12288:sIny5DYTMIaN9jks7qP1wLjDVxt5K7sct6to9xxSdVoyd7:qUTMRN/EGj5xvP66to9Zy

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\aaa61569b98601851c75d27aa39f63404efcf5bcb63482e312a55282b29340cd.exe
    "C:\Users\Admin\AppData\Local\Temp\aaa61569b98601851c75d27aa39f63404efcf5bcb63482e312a55282b29340cd.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:1788
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1244
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1772
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:2020
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:668
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1320
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1932
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1980
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1864
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:972
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1496
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1512

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a0e3c1b9937781e688085979d812bc0

            SHA1

            4fd8fdcc9f5f4d87a055cdc328d402ea82ec6086

            SHA256

            1c717361d822d95db24019c8a500a67864ab04f319f9e069f58503b485b5ab8a

            SHA512

            ad1a0378338f0bd4579fb4fd4b61f957aa7bd8d386bb7228445c5bb8691934ffe316904a9b106471da2a622c28a4644a5a95ef5c46711de8aabef90eec038958

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            fa0657de4e23e8006f184c6077263afd

            SHA1

            24c6a57691861d62eee9ace77794915013cf2ceb

            SHA256

            c1878b384bbbac62fe7fd2e5f027cd289d387bacc159712343cff8a5f0d11f01

            SHA512

            8faa40761151783a0b314e8ddbadb28225c95993e0042446be741990e8fde78250e7c793422637c60c6389b010cac752d0eab54f1a5947293594877a3c74e28b

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b6ec9ea13ce80e181e93a518c0dba0c8

            SHA1

            ec9ecd02c9c5cbb57c650cad36dde7c9d248c902

            SHA256

            ce4839b0fcb03816ae423684a61466a3b6036115af5e00658f2548816d80583c

            SHA512

            f318ca83866f38cf32f2937e9430fdd7fa14864a0749df87466c8bb56a24c0c0002bf7f73af156f833a53690c562e24a7dd7dfd7f254fd4c3dc803e9c6888397

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a4c6eddea88f01871a5b4484610d6ed5

            SHA1

            36221db01ead1cbe6a03f5319c8d1846f535d963

            SHA256

            1d5a3d85f48324d4f6819a2335b619d3217675956972ca37f384b5755a55bd5f

            SHA512

            c724f047abd6b3e63a3f5bf23d358fd4c2e1672b56146035cb1acec84c262c58ea26a564b74e2fd10d5208659d1da1d1eded4003ad03834f46c65036b321607e

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a4c6eddea88f01871a5b4484610d6ed5

            SHA1

            36221db01ead1cbe6a03f5319c8d1846f535d963

            SHA256

            1d5a3d85f48324d4f6819a2335b619d3217675956972ca37f384b5755a55bd5f

            SHA512

            c724f047abd6b3e63a3f5bf23d358fd4c2e1672b56146035cb1acec84c262c58ea26a564b74e2fd10d5208659d1da1d1eded4003ad03834f46c65036b321607e

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6968bdd9c207b7535e890fd821509c2b

            SHA1

            2479c44fadad6a79ef879c2fadf91ac065b717fd

            SHA256

            8a78da2d955f5971e728e611608cd12cf10dcfe93ebb66fa56a60a34540ea246

            SHA512

            41775b98490b826c6382bd9bf4561b4a661165909c7fb1969acb09d9ace9e3be7b480902e2e379970f02dfeb2e89c9983d45772f40f98c3f2e063c26f00ef654

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6968bdd9c207b7535e890fd821509c2b

            SHA1

            2479c44fadad6a79ef879c2fadf91ac065b717fd

            SHA256

            8a78da2d955f5971e728e611608cd12cf10dcfe93ebb66fa56a60a34540ea246

            SHA512

            41775b98490b826c6382bd9bf4561b4a661165909c7fb1969acb09d9ace9e3be7b480902e2e379970f02dfeb2e89c9983d45772f40f98c3f2e063c26f00ef654

          • \Users\Admin\AppData\Local\Temp\nsd2149.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd2149.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2149.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2149.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd2149.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a0e3c1b9937781e688085979d812bc0

            SHA1

            4fd8fdcc9f5f4d87a055cdc328d402ea82ec6086

            SHA256

            1c717361d822d95db24019c8a500a67864ab04f319f9e069f58503b485b5ab8a

            SHA512

            ad1a0378338f0bd4579fb4fd4b61f957aa7bd8d386bb7228445c5bb8691934ffe316904a9b106471da2a622c28a4644a5a95ef5c46711de8aabef90eec038958

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a0e3c1b9937781e688085979d812bc0

            SHA1

            4fd8fdcc9f5f4d87a055cdc328d402ea82ec6086

            SHA256

            1c717361d822d95db24019c8a500a67864ab04f319f9e069f58503b485b5ab8a

            SHA512

            ad1a0378338f0bd4579fb4fd4b61f957aa7bd8d386bb7228445c5bb8691934ffe316904a9b106471da2a622c28a4644a5a95ef5c46711de8aabef90eec038958

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            3a0e3c1b9937781e688085979d812bc0

            SHA1

            4fd8fdcc9f5f4d87a055cdc328d402ea82ec6086

            SHA256

            1c717361d822d95db24019c8a500a67864ab04f319f9e069f58503b485b5ab8a

            SHA512

            ad1a0378338f0bd4579fb4fd4b61f957aa7bd8d386bb7228445c5bb8691934ffe316904a9b106471da2a622c28a4644a5a95ef5c46711de8aabef90eec038958

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            fa0657de4e23e8006f184c6077263afd

            SHA1

            24c6a57691861d62eee9ace77794915013cf2ceb

            SHA256

            c1878b384bbbac62fe7fd2e5f027cd289d387bacc159712343cff8a5f0d11f01

            SHA512

            8faa40761151783a0b314e8ddbadb28225c95993e0042446be741990e8fde78250e7c793422637c60c6389b010cac752d0eab54f1a5947293594877a3c74e28b

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            fa0657de4e23e8006f184c6077263afd

            SHA1

            24c6a57691861d62eee9ace77794915013cf2ceb

            SHA256

            c1878b384bbbac62fe7fd2e5f027cd289d387bacc159712343cff8a5f0d11f01

            SHA512

            8faa40761151783a0b314e8ddbadb28225c95993e0042446be741990e8fde78250e7c793422637c60c6389b010cac752d0eab54f1a5947293594877a3c74e28b

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            b6ec9ea13ce80e181e93a518c0dba0c8

            SHA1

            ec9ecd02c9c5cbb57c650cad36dde7c9d248c902

            SHA256

            ce4839b0fcb03816ae423684a61466a3b6036115af5e00658f2548816d80583c

            SHA512

            f318ca83866f38cf32f2937e9430fdd7fa14864a0749df87466c8bb56a24c0c0002bf7f73af156f833a53690c562e24a7dd7dfd7f254fd4c3dc803e9c6888397

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a4c6eddea88f01871a5b4484610d6ed5

            SHA1

            36221db01ead1cbe6a03f5319c8d1846f535d963

            SHA256

            1d5a3d85f48324d4f6819a2335b619d3217675956972ca37f384b5755a55bd5f

            SHA512

            c724f047abd6b3e63a3f5bf23d358fd4c2e1672b56146035cb1acec84c262c58ea26a564b74e2fd10d5208659d1da1d1eded4003ad03834f46c65036b321607e

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            6968bdd9c207b7535e890fd821509c2b

            SHA1

            2479c44fadad6a79ef879c2fadf91ac065b717fd

            SHA256

            8a78da2d955f5971e728e611608cd12cf10dcfe93ebb66fa56a60a34540ea246

            SHA512

            41775b98490b826c6382bd9bf4561b4a661165909c7fb1969acb09d9ace9e3be7b480902e2e379970f02dfeb2e89c9983d45772f40f98c3f2e063c26f00ef654

          • memory/668-70-0x0000000000000000-mapping.dmp

          • memory/972-87-0x0000000000000000-mapping.dmp

          • memory/1000-57-0x0000000000000000-mapping.dmp

          • memory/1244-58-0x0000000000000000-mapping.dmp

          • memory/1320-76-0x0000000000000000-mapping.dmp

          • memory/1772-62-0x0000000000000000-mapping.dmp

          • memory/1788-54-0x0000000076321000-0x0000000076323000-memory.dmp

            Filesize

            8KB

          • memory/1788-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1788-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1864-86-0x0000000000000000-mapping.dmp

          • memory/1932-80-0x0000000000000000-mapping.dmp

          • memory/1980-81-0x0000000000000000-mapping.dmp

          • memory/2020-64-0x0000000000000000-mapping.dmp

          • memory/2028-61-0x0000000000000000-mapping.dmp