Analysis

  • max time kernel
    45s
  • 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 10:08

General

  • Target

    e9e99b5d3ad645980ad2dc363810ad5773a40fb4f5ff237d1cea3a86be251a11.exe

  • Size

    603KB

  • MD5

    1e2b3c8ac5ad1407e788124d80bb2168

  • SHA1

    b0e28a3c048ae4b1990f88e430258c15c2e9e190

  • SHA256

    e9e99b5d3ad645980ad2dc363810ad5773a40fb4f5ff237d1cea3a86be251a11

  • SHA512

    b692edb85a61b5c2ae0bfcfdee192ed139d33af2351a0a2beb43cfeb72a67a79f13fd61705f33dabbc93314313a3b23ec75b4a97f1bfb527724acae764484dc5

  • SSDEEP

    12288:2Iny5DYT29+9GNx/f3KGsQSpQc0MuUUQcerAMCKujNNyErF+U31tDKhA2:4UT29mkx/f3KNLpQHhdaAQu1rFvS

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\e9e99b5d3ad645980ad2dc363810ad5773a40fb4f5ff237d1cea3a86be251a11.exe
    "C:\Users\Admin\AppData\Local\Temp\e9e99b5d3ad645980ad2dc363810ad5773a40fb4f5ff237d1cea3a86be251a11.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:580
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:804
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1700
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1272
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1636
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1168
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1156
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:240
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:328
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1756
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:640
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1072
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1916
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1068

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1892304908e51df54137e678c7d5b164

            SHA1

            23955012baf7d7c0a02c91de3b0b79fecad81d12

            SHA256

            46fac1ef8f281385dbe9ff467860d1e3f29c47224fe9fc5575e484d8779236d3

            SHA512

            f2b759cc22581a4485db7bfb0d2e29bfec0ec0de99d232013852fc07f7c77f14cd440f5548888bb3396591d4fa76771cc7326941d9bc2d4991f7ffdd388e27f6

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4fdde5c1129ddd6ee51718481c8b8433

            SHA1

            4dd771677a8b20c88f5e057a933039839c26bb87

            SHA256

            2104c1f139dbd2259c5a6e96883014045a7894d6cb1959905f46df324835bca1

            SHA512

            5da4ad11d0bea14d2d721343fe6475150f23d3f022014cd25b53d21345b5f4edff294eb3a56232076abf79e9174cafbd8780531b0a7cce2ac23c26f3933dcd21

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4e1f50b6ef4ecb92b9334b6d74382df9

            SHA1

            1c3e6fc9e6d6c33ca58460da24dd5e3181870e80

            SHA256

            5a531caf468a8e8e28638efef601c1395854aa02f28ca75c88f300ba9b0cc584

            SHA512

            ddb077a9b9150fe943c2dfd1f22693685755641c98ca08f5d2be666a4299d97e591defa46fd87e18c3c4337ac4fb850037b08b11ae835ef09c3051bcfcb62179

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e671aa3876389c5a438ff987caa8742b

            SHA1

            9383cc0f035483f9fc8272c3f84eca0a6250034b

            SHA256

            e714b20fdee5d6fba426b7d5f521d1f1678881e72457042d5021867f4a766638

            SHA512

            c6136d0061da4ca7e57e28a5a069aa0d48ae71b9709aa8ff76186d0a32b415bf0f7c1170bfca8b1751516fdcac2e2c13b3928a8ca70995eb2758ef0c00d76bb0

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e671aa3876389c5a438ff987caa8742b

            SHA1

            9383cc0f035483f9fc8272c3f84eca0a6250034b

            SHA256

            e714b20fdee5d6fba426b7d5f521d1f1678881e72457042d5021867f4a766638

            SHA512

            c6136d0061da4ca7e57e28a5a069aa0d48ae71b9709aa8ff76186d0a32b415bf0f7c1170bfca8b1751516fdcac2e2c13b3928a8ca70995eb2758ef0c00d76bb0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9d062dac3dc2655e375925cf02242d2f

            SHA1

            6365d298717085b312a86857d68d5f2a408c1cc7

            SHA256

            feaa18aa31f039a48b07b9a931ca08163bf6cd1286654b8306a34afd1a116c90

            SHA512

            89e68a44269d5a47eb68b582cb53c083164e7e956bbc3ab58dd66d82c374909c311136f2eece9c10ee9bf26bc6b63dd9a80bb3d1b7466d05ce7b294937c75db6

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9d062dac3dc2655e375925cf02242d2f

            SHA1

            6365d298717085b312a86857d68d5f2a408c1cc7

            SHA256

            feaa18aa31f039a48b07b9a931ca08163bf6cd1286654b8306a34afd1a116c90

            SHA512

            89e68a44269d5a47eb68b582cb53c083164e7e956bbc3ab58dd66d82c374909c311136f2eece9c10ee9bf26bc6b63dd9a80bb3d1b7466d05ce7b294937c75db6

          • \Users\Admin\AppData\Local\Temp\nso1CF6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso1CF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1CF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1CF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso1CF6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1892304908e51df54137e678c7d5b164

            SHA1

            23955012baf7d7c0a02c91de3b0b79fecad81d12

            SHA256

            46fac1ef8f281385dbe9ff467860d1e3f29c47224fe9fc5575e484d8779236d3

            SHA512

            f2b759cc22581a4485db7bfb0d2e29bfec0ec0de99d232013852fc07f7c77f14cd440f5548888bb3396591d4fa76771cc7326941d9bc2d4991f7ffdd388e27f6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1892304908e51df54137e678c7d5b164

            SHA1

            23955012baf7d7c0a02c91de3b0b79fecad81d12

            SHA256

            46fac1ef8f281385dbe9ff467860d1e3f29c47224fe9fc5575e484d8779236d3

            SHA512

            f2b759cc22581a4485db7bfb0d2e29bfec0ec0de99d232013852fc07f7c77f14cd440f5548888bb3396591d4fa76771cc7326941d9bc2d4991f7ffdd388e27f6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1892304908e51df54137e678c7d5b164

            SHA1

            23955012baf7d7c0a02c91de3b0b79fecad81d12

            SHA256

            46fac1ef8f281385dbe9ff467860d1e3f29c47224fe9fc5575e484d8779236d3

            SHA512

            f2b759cc22581a4485db7bfb0d2e29bfec0ec0de99d232013852fc07f7c77f14cd440f5548888bb3396591d4fa76771cc7326941d9bc2d4991f7ffdd388e27f6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4fdde5c1129ddd6ee51718481c8b8433

            SHA1

            4dd771677a8b20c88f5e057a933039839c26bb87

            SHA256

            2104c1f139dbd2259c5a6e96883014045a7894d6cb1959905f46df324835bca1

            SHA512

            5da4ad11d0bea14d2d721343fe6475150f23d3f022014cd25b53d21345b5f4edff294eb3a56232076abf79e9174cafbd8780531b0a7cce2ac23c26f3933dcd21

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            4fdde5c1129ddd6ee51718481c8b8433

            SHA1

            4dd771677a8b20c88f5e057a933039839c26bb87

            SHA256

            2104c1f139dbd2259c5a6e96883014045a7894d6cb1959905f46df324835bca1

            SHA512

            5da4ad11d0bea14d2d721343fe6475150f23d3f022014cd25b53d21345b5f4edff294eb3a56232076abf79e9174cafbd8780531b0a7cce2ac23c26f3933dcd21

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4e1f50b6ef4ecb92b9334b6d74382df9

            SHA1

            1c3e6fc9e6d6c33ca58460da24dd5e3181870e80

            SHA256

            5a531caf468a8e8e28638efef601c1395854aa02f28ca75c88f300ba9b0cc584

            SHA512

            ddb077a9b9150fe943c2dfd1f22693685755641c98ca08f5d2be666a4299d97e591defa46fd87e18c3c4337ac4fb850037b08b11ae835ef09c3051bcfcb62179

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            e671aa3876389c5a438ff987caa8742b

            SHA1

            9383cc0f035483f9fc8272c3f84eca0a6250034b

            SHA256

            e714b20fdee5d6fba426b7d5f521d1f1678881e72457042d5021867f4a766638

            SHA512

            c6136d0061da4ca7e57e28a5a069aa0d48ae71b9709aa8ff76186d0a32b415bf0f7c1170bfca8b1751516fdcac2e2c13b3928a8ca70995eb2758ef0c00d76bb0

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            9d062dac3dc2655e375925cf02242d2f

            SHA1

            6365d298717085b312a86857d68d5f2a408c1cc7

            SHA256

            feaa18aa31f039a48b07b9a931ca08163bf6cd1286654b8306a34afd1a116c90

            SHA512

            89e68a44269d5a47eb68b582cb53c083164e7e956bbc3ab58dd66d82c374909c311136f2eece9c10ee9bf26bc6b63dd9a80bb3d1b7466d05ce7b294937c75db6

          • memory/240-77-0x0000000000000000-mapping.dmp

          • memory/328-81-0x0000000000000000-mapping.dmp

          • memory/580-54-0x0000000075931000-0x0000000075933000-memory.dmp

            Filesize

            8KB

          • memory/580-75-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/580-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/580-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/640-87-0x0000000000000000-mapping.dmp

          • memory/804-57-0x0000000000000000-mapping.dmp

          • memory/1072-88-0x0000000000000000-mapping.dmp

          • memory/1156-70-0x0000000000000000-mapping.dmp

          • memory/1168-64-0x0000000000000000-mapping.dmp

          • memory/1272-61-0x0000000000000000-mapping.dmp

          • memory/1636-62-0x0000000000000000-mapping.dmp

          • memory/1700-58-0x0000000000000000-mapping.dmp

          • memory/1756-82-0x0000000000000000-mapping.dmp