Analysis

  • max time kernel
    41s
  • 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 10:17

General

  • Target

    a03e71820e6cd3ebde3a7df33cef2c1f19c22547b52c3269fc9a10920fe5f2fa.exe

  • Size

    603KB

  • MD5

    4c5098ae00b1982f515d48ad8f06b3ed

  • SHA1

    a735745a3d0f22c6d56500e7baf78caa2c71fb12

  • SHA256

    a03e71820e6cd3ebde3a7df33cef2c1f19c22547b52c3269fc9a10920fe5f2fa

  • SHA512

    777b5d6655f30c4d192661d76466a0e256b3964706791bbee2f5cd2c89628d1085d70525e586a1930070ee913454cd4d624795c99988d3f2c7d18864d39c7814

  • SSDEEP

    12288:tIny5DYTmIgATGJ7S9NUvDa2BlA1td2hAqFLK+rucharyUFDFH:5UTmDAoSffv2hPm+acEyA

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\a03e71820e6cd3ebde3a7df33cef2c1f19c22547b52c3269fc9a10920fe5f2fa.exe
    "C:\Users\Admin\AppData\Local\Temp\a03e71820e6cd3ebde3a7df33cef2c1f19c22547b52c3269fc9a10920fe5f2fa.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:864
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:944
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1784
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1380
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1768
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1156
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:628
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1940
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1988
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1580
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1904
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:536
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1292
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1264

          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:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6c650895a19ecb04e8f85312114a9a73

            SHA1

            5f38da247f3543c77aab52d4f429c0d014e91863

            SHA256

            e62c521d10563cc989410f57dda0ffe7048e5fd5ba7d5dabf83d62c410e5efbd

            SHA512

            31dc785c9cae3d219d55316b716b597466aacd9be6bd1fe117d11fd959ad2bd6d598d1e7e93e0d4731f707ca2a257725deb9f9d125f2170e84c050535d12316a

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

            244KB

            MD5

            5d86adc292acf7eb3fcb1081a43b98ed

            SHA1

            2663b49ca33d177276b3e4fcd1d93950230601c4

            SHA256

            8de689c69b108ac43d8bed6a459dbb87e5b632a614c6491a277e2e4f40c7496e

            SHA512

            548afe289c56e8b7d4961aacdd71d97db7379d602463e2ba61761f66a1640e1373b8b6c9a0a4297db7c6bc6a44566bec463e1c315e5eafdefce24a679a093ecc

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

            108KB

            MD5

            ec992e05d5ac3c950310f1d69eabac1f

            SHA1

            5b53712084567aa5ff4683692553f36a8ff40cca

            SHA256

            551990b6c5bef6d6973d152cddcefa43ccdaa4d064f211e8c80082ec17696257

            SHA512

            fd44b52e4066bbd4ec00d54564f44aeea48fe0cc27bf27c3ea183b1653de755b8971e6a5d1e03527c136d6f0cd9e2b7559e79c8e7416e512f5f498f9914ab915

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

            176KB

            MD5

            11984e2dfb0c798eee2031ce793a5b4a

            SHA1

            362d6c58f725635b569da104eb97f7ede79e6a9c

            SHA256

            a2dc212031a89d6328d176c66c438dee1c642020b7182933e7db055763b9d761

            SHA512

            a91c5f7f094c8d60e6512cc26dd8edb6c07f496711095f8f10937c139b878dccf2222477d58e7edbfd5540ca4edb358bf510d114ef8d158be56542cfd65e3fba

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

            176KB

            MD5

            11984e2dfb0c798eee2031ce793a5b4a

            SHA1

            362d6c58f725635b569da104eb97f7ede79e6a9c

            SHA256

            a2dc212031a89d6328d176c66c438dee1c642020b7182933e7db055763b9d761

            SHA512

            a91c5f7f094c8d60e6512cc26dd8edb6c07f496711095f8f10937c139b878dccf2222477d58e7edbfd5540ca4edb358bf510d114ef8d158be56542cfd65e3fba

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

            158KB

            MD5

            9f62014f206d152664ce7f13e0c0cb3b

            SHA1

            931844aa5c1fcb77a09114a03d86a62a1d3a2dce

            SHA256

            b8a95a6bf7f681c84f711a799162100087d9cee2965d769f2e72a2cab51c060f

            SHA512

            7709f2a35bfb412bbe1066dcddcc9d665c6669eb6f61c73922f346db6063af746de61869756c159aba05754e1fd389fc46e98bbba39290dfffee5de9fc288a51

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

            158KB

            MD5

            9f62014f206d152664ce7f13e0c0cb3b

            SHA1

            931844aa5c1fcb77a09114a03d86a62a1d3a2dce

            SHA256

            b8a95a6bf7f681c84f711a799162100087d9cee2965d769f2e72a2cab51c060f

            SHA512

            7709f2a35bfb412bbe1066dcddcc9d665c6669eb6f61c73922f346db6063af746de61869756c159aba05754e1fd389fc46e98bbba39290dfffee5de9fc288a51

          • \Users\Admin\AppData\Local\Temp\nsd10D5.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd10D5.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd10D5.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd10D5.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd10D5.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6c650895a19ecb04e8f85312114a9a73

            SHA1

            5f38da247f3543c77aab52d4f429c0d014e91863

            SHA256

            e62c521d10563cc989410f57dda0ffe7048e5fd5ba7d5dabf83d62c410e5efbd

            SHA512

            31dc785c9cae3d219d55316b716b597466aacd9be6bd1fe117d11fd959ad2bd6d598d1e7e93e0d4731f707ca2a257725deb9f9d125f2170e84c050535d12316a

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6c650895a19ecb04e8f85312114a9a73

            SHA1

            5f38da247f3543c77aab52d4f429c0d014e91863

            SHA256

            e62c521d10563cc989410f57dda0ffe7048e5fd5ba7d5dabf83d62c410e5efbd

            SHA512

            31dc785c9cae3d219d55316b716b597466aacd9be6bd1fe117d11fd959ad2bd6d598d1e7e93e0d4731f707ca2a257725deb9f9d125f2170e84c050535d12316a

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            6c650895a19ecb04e8f85312114a9a73

            SHA1

            5f38da247f3543c77aab52d4f429c0d014e91863

            SHA256

            e62c521d10563cc989410f57dda0ffe7048e5fd5ba7d5dabf83d62c410e5efbd

            SHA512

            31dc785c9cae3d219d55316b716b597466aacd9be6bd1fe117d11fd959ad2bd6d598d1e7e93e0d4731f707ca2a257725deb9f9d125f2170e84c050535d12316a

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            5d86adc292acf7eb3fcb1081a43b98ed

            SHA1

            2663b49ca33d177276b3e4fcd1d93950230601c4

            SHA256

            8de689c69b108ac43d8bed6a459dbb87e5b632a614c6491a277e2e4f40c7496e

            SHA512

            548afe289c56e8b7d4961aacdd71d97db7379d602463e2ba61761f66a1640e1373b8b6c9a0a4297db7c6bc6a44566bec463e1c315e5eafdefce24a679a093ecc

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            5d86adc292acf7eb3fcb1081a43b98ed

            SHA1

            2663b49ca33d177276b3e4fcd1d93950230601c4

            SHA256

            8de689c69b108ac43d8bed6a459dbb87e5b632a614c6491a277e2e4f40c7496e

            SHA512

            548afe289c56e8b7d4961aacdd71d97db7379d602463e2ba61761f66a1640e1373b8b6c9a0a4297db7c6bc6a44566bec463e1c315e5eafdefce24a679a093ecc

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            ec992e05d5ac3c950310f1d69eabac1f

            SHA1

            5b53712084567aa5ff4683692553f36a8ff40cca

            SHA256

            551990b6c5bef6d6973d152cddcefa43ccdaa4d064f211e8c80082ec17696257

            SHA512

            fd44b52e4066bbd4ec00d54564f44aeea48fe0cc27bf27c3ea183b1653de755b8971e6a5d1e03527c136d6f0cd9e2b7559e79c8e7416e512f5f498f9914ab915

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            11984e2dfb0c798eee2031ce793a5b4a

            SHA1

            362d6c58f725635b569da104eb97f7ede79e6a9c

            SHA256

            a2dc212031a89d6328d176c66c438dee1c642020b7182933e7db055763b9d761

            SHA512

            a91c5f7f094c8d60e6512cc26dd8edb6c07f496711095f8f10937c139b878dccf2222477d58e7edbfd5540ca4edb358bf510d114ef8d158be56542cfd65e3fba

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            9f62014f206d152664ce7f13e0c0cb3b

            SHA1

            931844aa5c1fcb77a09114a03d86a62a1d3a2dce

            SHA256

            b8a95a6bf7f681c84f711a799162100087d9cee2965d769f2e72a2cab51c060f

            SHA512

            7709f2a35bfb412bbe1066dcddcc9d665c6669eb6f61c73922f346db6063af746de61869756c159aba05754e1fd389fc46e98bbba39290dfffee5de9fc288a51

          • memory/536-88-0x0000000000000000-mapping.dmp
          • memory/628-71-0x0000000000000000-mapping.dmp
          • memory/864-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/864-69-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/864-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/864-54-0x0000000075141000-0x0000000075143000-memory.dmp
            Filesize

            8KB

          • memory/944-58-0x0000000000000000-mapping.dmp
          • memory/1156-64-0x0000000000000000-mapping.dmp
          • memory/1380-61-0x0000000000000000-mapping.dmp
          • memory/1580-82-0x0000000000000000-mapping.dmp
          • memory/1768-62-0x0000000000000000-mapping.dmp
          • memory/1784-59-0x0000000000000000-mapping.dmp
          • memory/1904-87-0x0000000000000000-mapping.dmp
          • memory/1940-77-0x0000000000000000-mapping.dmp
          • memory/1988-81-0x0000000000000000-mapping.dmp