Analysis

  • max time kernel
    41s
  • max time network
    45s
  • 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

    a1240511c13ee75be042a900385c90421cc56416b4ff51f6c4e0a66f02ade94d.exe

  • Size

    602KB

  • MD5

    8399e951daf2ecc68e97b57bbcac47f0

  • SHA1

    596f6e2d8a7a32486c0d9fc2eaaa12d73a85f760

  • SHA256

    a1240511c13ee75be042a900385c90421cc56416b4ff51f6c4e0a66f02ade94d

  • SHA512

    304defa3011656c8fbbd78fe27f6d270e36dc97c8c02c3cb219d77265d93130d5eb1b477ef4b524be443046cfd0c81939061500a07e4bd7ce80be235eeb20607

  • SSDEEP

    12288:OIny5DYTV7YbR+7r6yZggmn/NHceZQcldlE/xJMt:QUTtYw7+ySNJ+ilEJJC

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\a1240511c13ee75be042a900385c90421cc56416b4ff51f6c4e0a66f02ade94d.exe
    "C:\Users\Admin\AppData\Local\Temp\a1240511c13ee75be042a900385c90421cc56416b4ff51f6c4e0a66f02ade94d.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:1760
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1656
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1652
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1792
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:844
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:952
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:324
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1844
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1332
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2028
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1636
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1336
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1936
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1276

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8100bb72198c48a73f3c23d1778895d4

            SHA1

            bb3edf1f259d1bb51b7da1f4bf761e45249cd550

            SHA256

            9be95ffdf03753f20b457f47450db57c146ccc7e64fc3bcdfd93c1e316220406

            SHA512

            2f501b21e119b80eb47785cf138d3cbd9b20e3c761a876d9672ec900b219be996148b1bfde66ff0c01e353ae791a978ac0ce317243a61c52bd191b5b78d7bc9e

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36f3fefabd18d2d16ca6673dc4c8cc10

            SHA1

            95cc58c7065220067ff5a80a2a128f92c41999f5

            SHA256

            192a61fde23f4459d1bd182c6ea2ba5a9633667fbc5e50ca5d6878a7c58f2eb3

            SHA512

            e2b5a0cae97a141eff061d4cab4eff18b0f46e549e9b18862421e952930808b55f4e70f590a97492ccdf5a09b7ea362e5469567708146835a6c5f2c69e953483

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cd6d63429c55176ecad86188ed44f8eb

            SHA1

            0dae46ee891f06abf5f86a62859205e23eaa9ef2

            SHA256

            6a497df0900588ba115334ba1a1f55d491b777e4adbe524373e5478f1358522b

            SHA512

            b9f7e11d2d1c55b7eacc6e3986022d89d4281d13c7602a81155748dee9036b6a4ab55e46ea420ff545e91e3b2ddb6104230fe00f30c21bb03c2f049cab3dde9f

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            708644fded2c711b89edf33ad3e342c7

            SHA1

            1cf9062f81749b5e1eda2b17590c639c9018d5f1

            SHA256

            15ae66994ed0903b705d06c0d8edb0f85addf9f49dd229db70ffc2517a4f5594

            SHA512

            e27511478200bcce0949e762c67a522afcfff5045c7ea712f73a68745c3157dc48250872aca0004527aa4f22bf001bb01a1dc2877119e02090011f5418c86a49

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            708644fded2c711b89edf33ad3e342c7

            SHA1

            1cf9062f81749b5e1eda2b17590c639c9018d5f1

            SHA256

            15ae66994ed0903b705d06c0d8edb0f85addf9f49dd229db70ffc2517a4f5594

            SHA512

            e27511478200bcce0949e762c67a522afcfff5045c7ea712f73a68745c3157dc48250872aca0004527aa4f22bf001bb01a1dc2877119e02090011f5418c86a49

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            010e5bf3ee4f86a226ccd7a0c6945457

            SHA1

            0c472697b8f97fe3376d46983942278671b28258

            SHA256

            5e0c88e440f2c846e498fe34831b663fce191c1381533cf7e0c06291b44077da

            SHA512

            c1e69a5bbe0bbbce2c147b7b64136154bf682034224b725719524cd6dc30ec312c7b9a62c054bdefc4b64e4f4a5752052619d56c4b8a3b2e7e0401848c0df854

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            010e5bf3ee4f86a226ccd7a0c6945457

            SHA1

            0c472697b8f97fe3376d46983942278671b28258

            SHA256

            5e0c88e440f2c846e498fe34831b663fce191c1381533cf7e0c06291b44077da

            SHA512

            c1e69a5bbe0bbbce2c147b7b64136154bf682034224b725719524cd6dc30ec312c7b9a62c054bdefc4b64e4f4a5752052619d56c4b8a3b2e7e0401848c0df854

          • \Users\Admin\AppData\Local\Temp\nsyFFA6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsyFFA6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFFA6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFFA6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsyFFA6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8100bb72198c48a73f3c23d1778895d4

            SHA1

            bb3edf1f259d1bb51b7da1f4bf761e45249cd550

            SHA256

            9be95ffdf03753f20b457f47450db57c146ccc7e64fc3bcdfd93c1e316220406

            SHA512

            2f501b21e119b80eb47785cf138d3cbd9b20e3c761a876d9672ec900b219be996148b1bfde66ff0c01e353ae791a978ac0ce317243a61c52bd191b5b78d7bc9e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8100bb72198c48a73f3c23d1778895d4

            SHA1

            bb3edf1f259d1bb51b7da1f4bf761e45249cd550

            SHA256

            9be95ffdf03753f20b457f47450db57c146ccc7e64fc3bcdfd93c1e316220406

            SHA512

            2f501b21e119b80eb47785cf138d3cbd9b20e3c761a876d9672ec900b219be996148b1bfde66ff0c01e353ae791a978ac0ce317243a61c52bd191b5b78d7bc9e

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            8100bb72198c48a73f3c23d1778895d4

            SHA1

            bb3edf1f259d1bb51b7da1f4bf761e45249cd550

            SHA256

            9be95ffdf03753f20b457f47450db57c146ccc7e64fc3bcdfd93c1e316220406

            SHA512

            2f501b21e119b80eb47785cf138d3cbd9b20e3c761a876d9672ec900b219be996148b1bfde66ff0c01e353ae791a978ac0ce317243a61c52bd191b5b78d7bc9e

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36f3fefabd18d2d16ca6673dc4c8cc10

            SHA1

            95cc58c7065220067ff5a80a2a128f92c41999f5

            SHA256

            192a61fde23f4459d1bd182c6ea2ba5a9633667fbc5e50ca5d6878a7c58f2eb3

            SHA512

            e2b5a0cae97a141eff061d4cab4eff18b0f46e549e9b18862421e952930808b55f4e70f590a97492ccdf5a09b7ea362e5469567708146835a6c5f2c69e953483

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36f3fefabd18d2d16ca6673dc4c8cc10

            SHA1

            95cc58c7065220067ff5a80a2a128f92c41999f5

            SHA256

            192a61fde23f4459d1bd182c6ea2ba5a9633667fbc5e50ca5d6878a7c58f2eb3

            SHA512

            e2b5a0cae97a141eff061d4cab4eff18b0f46e549e9b18862421e952930808b55f4e70f590a97492ccdf5a09b7ea362e5469567708146835a6c5f2c69e953483

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            cd6d63429c55176ecad86188ed44f8eb

            SHA1

            0dae46ee891f06abf5f86a62859205e23eaa9ef2

            SHA256

            6a497df0900588ba115334ba1a1f55d491b777e4adbe524373e5478f1358522b

            SHA512

            b9f7e11d2d1c55b7eacc6e3986022d89d4281d13c7602a81155748dee9036b6a4ab55e46ea420ff545e91e3b2ddb6104230fe00f30c21bb03c2f049cab3dde9f

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            708644fded2c711b89edf33ad3e342c7

            SHA1

            1cf9062f81749b5e1eda2b17590c639c9018d5f1

            SHA256

            15ae66994ed0903b705d06c0d8edb0f85addf9f49dd229db70ffc2517a4f5594

            SHA512

            e27511478200bcce0949e762c67a522afcfff5045c7ea712f73a68745c3157dc48250872aca0004527aa4f22bf001bb01a1dc2877119e02090011f5418c86a49

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            010e5bf3ee4f86a226ccd7a0c6945457

            SHA1

            0c472697b8f97fe3376d46983942278671b28258

            SHA256

            5e0c88e440f2c846e498fe34831b663fce191c1381533cf7e0c06291b44077da

            SHA512

            c1e69a5bbe0bbbce2c147b7b64136154bf682034224b725719524cd6dc30ec312c7b9a62c054bdefc4b64e4f4a5752052619d56c4b8a3b2e7e0401848c0df854

          • memory/324-71-0x0000000000000000-mapping.dmp

          • memory/844-62-0x0000000000000000-mapping.dmp

          • memory/952-64-0x0000000000000000-mapping.dmp

          • memory/1332-81-0x0000000000000000-mapping.dmp

          • memory/1336-88-0x0000000000000000-mapping.dmp

          • memory/1636-87-0x0000000000000000-mapping.dmp

          • memory/1652-59-0x0000000000000000-mapping.dmp

          • memory/1656-57-0x0000000000000000-mapping.dmp

          • memory/1760-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1760-54-0x0000000075C51000-0x0000000075C53000-memory.dmp

            Filesize

            8KB

          • memory/1760-58-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1760-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1792-61-0x0000000000000000-mapping.dmp

          • memory/1844-77-0x0000000000000000-mapping.dmp

          • memory/2028-82-0x0000000000000000-mapping.dmp