Analysis

  • max time kernel
    30s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2022, 00:19

General

  • Target

    d175b7d2e7583c70d7357d469666e340f97a47f850bee67d097b17ea063a64d3.exe

  • Size

    696KB

  • MD5

    1d04a1887edbe294a8fe492ee3da4c72

  • SHA1

    e59ce6b57c0e1efcff9115031eb0da0dca7b2513

  • SHA256

    d175b7d2e7583c70d7357d469666e340f97a47f850bee67d097b17ea063a64d3

  • SHA512

    b85c111bd2727aa7dd39a19313b0886d887ff4c431d62ffb31ca9e0a0f415d2c640a135395825a3ead1a21c377b3aed6a1dc78ca18a2a29862c158d6fabf1cf8

  • SSDEEP

    12288:aAbu3fQ+thk6Ez6bfP7/O8Ur/LYKmKNOze7yTHx1V7KPwz769jxC0Z9/:aAbuPPEzGfDO8UDiKkzx/Vbe9jZZd

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\d175b7d2e7583c70d7357d469666e340f97a47f850bee67d097b17ea063a64d3.exe
    "C:\Users\Admin\AppData\Local\Temp\d175b7d2e7583c70d7357d469666e340f97a47f850bee67d097b17ea063a64d3.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:1808
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1112
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1220
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:524
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1464
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1752
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1656
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1520
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1176
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1864
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:560
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1204
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1664
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1772

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b87dfc4f29c11f6021f09b394498de

            SHA1

            c183ef4afe7091756f6f0a7c729a2e3703ec046d

            SHA256

            7bd024f657e908b064e3924797260b72fe8a0b60902be650530afde69bc7fbe3

            SHA512

            4c359199bde25aef049813b3d18db3a3a9ba5698f2619c5e16079a3f474551138468be4fa7461aea2e69e06c5a1c0c526db6ce08566baa35def1affc6f58f4f2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            09a2c6d4267bcbecb3d209c19143261c

            SHA1

            99122f97c578e8399b62f89d9e1a70bf3c677465

            SHA256

            6c18be5955974bdd1c1fc219e744eaf36067eb29a1a6a601e94136825fe2fc05

            SHA512

            6f95d6e986ed890b01c84188c224203ba0c3e9187ce71fe9522338f3782a4d32695fcf0a451ca1bbf9dbba349e2b24e544c51b9716999a8097fdb5118a4ee63c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a2a776f43731fcb4a4c3f095cea79e81

            SHA1

            61c9bbc84b93c71d7be9062864b55a8a64278128

            SHA256

            cb227d20790351ddff56462543f9cdc6813ed8e7239018ae41e25cdc4f1173f4

            SHA512

            bac5788be2655d22dc9db95f8bcda65b9dd51501e6bb322c58a39b20a017dd1fcc02a3ebb1cb2d22384bc88199a45849f695802c19e3209fb26c60b3ba4866f3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a67ed48997b3c0472cf397a7a4b031b4

            SHA1

            5d550b28bba5d85e28fd05bdd1604ab94b76660a

            SHA256

            ffacb130520826dfb5a3d799bb60442dd0066c000c181140d92f62098dffa5de

            SHA512

            79131d6890e141476921b8cf161e705f8672ea7dd3ccf1a17373d38dd080e7a74c6d2216425d364c58ba4bb6381225b9656ea4692c6e05afb79b6afca4eddab3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a67ed48997b3c0472cf397a7a4b031b4

            SHA1

            5d550b28bba5d85e28fd05bdd1604ab94b76660a

            SHA256

            ffacb130520826dfb5a3d799bb60442dd0066c000c181140d92f62098dffa5de

            SHA512

            79131d6890e141476921b8cf161e705f8672ea7dd3ccf1a17373d38dd080e7a74c6d2216425d364c58ba4bb6381225b9656ea4692c6e05afb79b6afca4eddab3

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            08858bad5eb9fcdd9436c35d56f6788c

            SHA1

            a1327afeafd48c572f640c0dea85b8934e321512

            SHA256

            3437d60edd4080fd0c54ec6bf8b163242c150225be5dd06793639cc688fac0c3

            SHA512

            65859943fe81b0ffa344e9f2d0f5949e01e9590c464ec2da266268eb37f5eb300ae64c17ba9c73635473d5218535f28b1800d4ab1896fd72b303327dc6fe6ab9

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            08858bad5eb9fcdd9436c35d56f6788c

            SHA1

            a1327afeafd48c572f640c0dea85b8934e321512

            SHA256

            3437d60edd4080fd0c54ec6bf8b163242c150225be5dd06793639cc688fac0c3

            SHA512

            65859943fe81b0ffa344e9f2d0f5949e01e9590c464ec2da266268eb37f5eb300ae64c17ba9c73635473d5218535f28b1800d4ab1896fd72b303327dc6fe6ab9

          • \Users\Admin\AppData\Local\Temp\nsd68E3.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsd68E3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd68E3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd68E3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsd68E3.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b87dfc4f29c11f6021f09b394498de

            SHA1

            c183ef4afe7091756f6f0a7c729a2e3703ec046d

            SHA256

            7bd024f657e908b064e3924797260b72fe8a0b60902be650530afde69bc7fbe3

            SHA512

            4c359199bde25aef049813b3d18db3a3a9ba5698f2619c5e16079a3f474551138468be4fa7461aea2e69e06c5a1c0c526db6ce08566baa35def1affc6f58f4f2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b87dfc4f29c11f6021f09b394498de

            SHA1

            c183ef4afe7091756f6f0a7c729a2e3703ec046d

            SHA256

            7bd024f657e908b064e3924797260b72fe8a0b60902be650530afde69bc7fbe3

            SHA512

            4c359199bde25aef049813b3d18db3a3a9ba5698f2619c5e16079a3f474551138468be4fa7461aea2e69e06c5a1c0c526db6ce08566baa35def1affc6f58f4f2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e7b87dfc4f29c11f6021f09b394498de

            SHA1

            c183ef4afe7091756f6f0a7c729a2e3703ec046d

            SHA256

            7bd024f657e908b064e3924797260b72fe8a0b60902be650530afde69bc7fbe3

            SHA512

            4c359199bde25aef049813b3d18db3a3a9ba5698f2619c5e16079a3f474551138468be4fa7461aea2e69e06c5a1c0c526db6ce08566baa35def1affc6f58f4f2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            09a2c6d4267bcbecb3d209c19143261c

            SHA1

            99122f97c578e8399b62f89d9e1a70bf3c677465

            SHA256

            6c18be5955974bdd1c1fc219e744eaf36067eb29a1a6a601e94136825fe2fc05

            SHA512

            6f95d6e986ed890b01c84188c224203ba0c3e9187ce71fe9522338f3782a4d32695fcf0a451ca1bbf9dbba349e2b24e544c51b9716999a8097fdb5118a4ee63c

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            09a2c6d4267bcbecb3d209c19143261c

            SHA1

            99122f97c578e8399b62f89d9e1a70bf3c677465

            SHA256

            6c18be5955974bdd1c1fc219e744eaf36067eb29a1a6a601e94136825fe2fc05

            SHA512

            6f95d6e986ed890b01c84188c224203ba0c3e9187ce71fe9522338f3782a4d32695fcf0a451ca1bbf9dbba349e2b24e544c51b9716999a8097fdb5118a4ee63c

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            a2a776f43731fcb4a4c3f095cea79e81

            SHA1

            61c9bbc84b93c71d7be9062864b55a8a64278128

            SHA256

            cb227d20790351ddff56462543f9cdc6813ed8e7239018ae41e25cdc4f1173f4

            SHA512

            bac5788be2655d22dc9db95f8bcda65b9dd51501e6bb322c58a39b20a017dd1fcc02a3ebb1cb2d22384bc88199a45849f695802c19e3209fb26c60b3ba4866f3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            a67ed48997b3c0472cf397a7a4b031b4

            SHA1

            5d550b28bba5d85e28fd05bdd1604ab94b76660a

            SHA256

            ffacb130520826dfb5a3d799bb60442dd0066c000c181140d92f62098dffa5de

            SHA512

            79131d6890e141476921b8cf161e705f8672ea7dd3ccf1a17373d38dd080e7a74c6d2216425d364c58ba4bb6381225b9656ea4692c6e05afb79b6afca4eddab3

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            08858bad5eb9fcdd9436c35d56f6788c

            SHA1

            a1327afeafd48c572f640c0dea85b8934e321512

            SHA256

            3437d60edd4080fd0c54ec6bf8b163242c150225be5dd06793639cc688fac0c3

            SHA512

            65859943fe81b0ffa344e9f2d0f5949e01e9590c464ec2da266268eb37f5eb300ae64c17ba9c73635473d5218535f28b1800d4ab1896fd72b303327dc6fe6ab9

          • memory/1808-75-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/1808-54-0x00000000759F1000-0x00000000759F3000-memory.dmp

            Filesize

            8KB

          • memory/1808-58-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB

          • memory/1808-91-0x0000000000340000-0x00000000007BE000-memory.dmp

            Filesize

            4.5MB