Analysis

  • max time kernel
    47s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:14

General

  • Target

    b7f8daa100122e5e484252eff3530e9c52f19fb25339f9f9a0c207143bcf6c75.exe

  • Size

    601KB

  • MD5

    3340fa12bc7a8ee3e0eaa6b042739c27

  • SHA1

    ab51b20927a104e2a904e037b8f80ed2a910eb73

  • SHA256

    b7f8daa100122e5e484252eff3530e9c52f19fb25339f9f9a0c207143bcf6c75

  • SHA512

    65520e6f26997885e3107d68feb1563e2813d8837979c3562e6151dca761c1667e7cc76b8da777b4d0d71afbc6cc4a0aaeeffbe4ab687fc90fa0cd3c0327eff4

  • SSDEEP

    12288:DIny5DYTe9hdCKd47lZ8T0omzMxRJMaBGeZ/57X2HSw:LUTe9Ld08NmYJMaBrZJ2

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\b7f8daa100122e5e484252eff3530e9c52f19fb25339f9f9a0c207143bcf6c75.exe
    "C:\Users\Admin\AppData\Local\Temp\b7f8daa100122e5e484252eff3530e9c52f19fb25339f9f9a0c207143bcf6c75.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:2028
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:948
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1648
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1548
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:836
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1428
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1692
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:828
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:580
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:792
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1124
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:568
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1284
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2000

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            296544d90798214c2abd6a6bf7d579a8

            SHA1

            cd641d512223b38efcc4d99e8b01efbdae82553a

            SHA256

            dbfcd5f7462aed7ea72d096b7c3320a52ad0e833ace99fba52d779d48713e96d

            SHA512

            92964fc276bd278c4c4f9def3559c5c48d72b2c135b06fd74e21b975344ca5ac59628c69d07deab0ecd8f4d5efe67a0c02f84831a90e7e9c7894e1840b95c466

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            79a6b6104e4f9391118af39ad8877b03

            SHA1

            77f50d26598b51eb8182d50c174f51fe5f510b04

            SHA256

            9e6ac7857306bd05c4db385adf63aaffdc3f6e21e8048b1072433df83d8cb3ac

            SHA512

            69f6fce6d888833b8189df51d89e24c88591d1f9ca3bf2e689b991ac51a2800e4a25efbb13d83d71b10aaf8113ee8815363a8ba97e343b50eb3cd5d074432112

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            da7262f906fa06a878073766aa347af8

            SHA1

            720a2004efc12e402236a3f2bc75fd08e96f0ae0

            SHA256

            f2bc8cc8f43a20a2fbccddf7be59a7eedbfc81192ba738ebe5e9850b4ebd057a

            SHA512

            4989e4fd183094448a2fbc0850bbe1b669f275bfd6c86a23d61ff3fe0ba1a175aa3d71d983fceca12fd3f204716ff957695edea87eb39068e02cbfe10972b203

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d80592d8396de7bb08e813997ddb5a08

            SHA1

            c76d0bbd726ae71cc919fb33745888cceb1be431

            SHA256

            2b8e8ca4572cd0f7aab6a8361129058d03fa7777866e29a655ed381555d03a4c

            SHA512

            73d802ef5e97cddb8d2f1ad9f9c947df8dbda208830776d2a4aca8a132723372fb38eb940084981d378fb133b9d8a4fddccd0e1b597dcb116eebca060a10a991

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d80592d8396de7bb08e813997ddb5a08

            SHA1

            c76d0bbd726ae71cc919fb33745888cceb1be431

            SHA256

            2b8e8ca4572cd0f7aab6a8361129058d03fa7777866e29a655ed381555d03a4c

            SHA512

            73d802ef5e97cddb8d2f1ad9f9c947df8dbda208830776d2a4aca8a132723372fb38eb940084981d378fb133b9d8a4fddccd0e1b597dcb116eebca060a10a991

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            56f1fe83a85025eeea2799a5b66f7e52

            SHA1

            3059543d1cbdd049f8903ac04ab7d1e3a3cc0161

            SHA256

            8ff153c75c2d29af26f7bd61dff0d10d9c9f5314a5be1db0c24f399f0bb40b6a

            SHA512

            8d81432f9d4ca074b87f0f1f20e1bad80904994f501d52c8af7c406834e35c8a3f76f5790b50f8e1ab2bf86b5c50490632055e0ef1bd93b35bc4f0203f208abc

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            56f1fe83a85025eeea2799a5b66f7e52

            SHA1

            3059543d1cbdd049f8903ac04ab7d1e3a3cc0161

            SHA256

            8ff153c75c2d29af26f7bd61dff0d10d9c9f5314a5be1db0c24f399f0bb40b6a

            SHA512

            8d81432f9d4ca074b87f0f1f20e1bad80904994f501d52c8af7c406834e35c8a3f76f5790b50f8e1ab2bf86b5c50490632055e0ef1bd93b35bc4f0203f208abc

          • \Users\Admin\AppData\Local\Temp\nsj93F9.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj93F9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj93F9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj93F9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj93F9.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            296544d90798214c2abd6a6bf7d579a8

            SHA1

            cd641d512223b38efcc4d99e8b01efbdae82553a

            SHA256

            dbfcd5f7462aed7ea72d096b7c3320a52ad0e833ace99fba52d779d48713e96d

            SHA512

            92964fc276bd278c4c4f9def3559c5c48d72b2c135b06fd74e21b975344ca5ac59628c69d07deab0ecd8f4d5efe67a0c02f84831a90e7e9c7894e1840b95c466

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            296544d90798214c2abd6a6bf7d579a8

            SHA1

            cd641d512223b38efcc4d99e8b01efbdae82553a

            SHA256

            dbfcd5f7462aed7ea72d096b7c3320a52ad0e833ace99fba52d779d48713e96d

            SHA512

            92964fc276bd278c4c4f9def3559c5c48d72b2c135b06fd74e21b975344ca5ac59628c69d07deab0ecd8f4d5efe67a0c02f84831a90e7e9c7894e1840b95c466

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            296544d90798214c2abd6a6bf7d579a8

            SHA1

            cd641d512223b38efcc4d99e8b01efbdae82553a

            SHA256

            dbfcd5f7462aed7ea72d096b7c3320a52ad0e833ace99fba52d779d48713e96d

            SHA512

            92964fc276bd278c4c4f9def3559c5c48d72b2c135b06fd74e21b975344ca5ac59628c69d07deab0ecd8f4d5efe67a0c02f84831a90e7e9c7894e1840b95c466

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            79a6b6104e4f9391118af39ad8877b03

            SHA1

            77f50d26598b51eb8182d50c174f51fe5f510b04

            SHA256

            9e6ac7857306bd05c4db385adf63aaffdc3f6e21e8048b1072433df83d8cb3ac

            SHA512

            69f6fce6d888833b8189df51d89e24c88591d1f9ca3bf2e689b991ac51a2800e4a25efbb13d83d71b10aaf8113ee8815363a8ba97e343b50eb3cd5d074432112

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            79a6b6104e4f9391118af39ad8877b03

            SHA1

            77f50d26598b51eb8182d50c174f51fe5f510b04

            SHA256

            9e6ac7857306bd05c4db385adf63aaffdc3f6e21e8048b1072433df83d8cb3ac

            SHA512

            69f6fce6d888833b8189df51d89e24c88591d1f9ca3bf2e689b991ac51a2800e4a25efbb13d83d71b10aaf8113ee8815363a8ba97e343b50eb3cd5d074432112

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            da7262f906fa06a878073766aa347af8

            SHA1

            720a2004efc12e402236a3f2bc75fd08e96f0ae0

            SHA256

            f2bc8cc8f43a20a2fbccddf7be59a7eedbfc81192ba738ebe5e9850b4ebd057a

            SHA512

            4989e4fd183094448a2fbc0850bbe1b669f275bfd6c86a23d61ff3fe0ba1a175aa3d71d983fceca12fd3f204716ff957695edea87eb39068e02cbfe10972b203

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d80592d8396de7bb08e813997ddb5a08

            SHA1

            c76d0bbd726ae71cc919fb33745888cceb1be431

            SHA256

            2b8e8ca4572cd0f7aab6a8361129058d03fa7777866e29a655ed381555d03a4c

            SHA512

            73d802ef5e97cddb8d2f1ad9f9c947df8dbda208830776d2a4aca8a132723372fb38eb940084981d378fb133b9d8a4fddccd0e1b597dcb116eebca060a10a991

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            56f1fe83a85025eeea2799a5b66f7e52

            SHA1

            3059543d1cbdd049f8903ac04ab7d1e3a3cc0161

            SHA256

            8ff153c75c2d29af26f7bd61dff0d10d9c9f5314a5be1db0c24f399f0bb40b6a

            SHA512

            8d81432f9d4ca074b87f0f1f20e1bad80904994f501d52c8af7c406834e35c8a3f76f5790b50f8e1ab2bf86b5c50490632055e0ef1bd93b35bc4f0203f208abc

          • memory/568-87-0x0000000000000000-mapping.dmp

          • memory/580-80-0x0000000000000000-mapping.dmp

          • memory/792-81-0x0000000000000000-mapping.dmp

          • memory/828-76-0x0000000000000000-mapping.dmp

          • memory/836-62-0x0000000000000000-mapping.dmp

          • memory/948-57-0x0000000000000000-mapping.dmp

          • memory/1124-86-0x0000000000000000-mapping.dmp

          • memory/1428-64-0x0000000000000000-mapping.dmp

          • memory/1548-61-0x0000000000000000-mapping.dmp

          • memory/1648-58-0x0000000000000000-mapping.dmp

          • memory/1692-70-0x0000000000000000-mapping.dmp

          • memory/2028-54-0x00000000758C1000-0x00000000758C3000-memory.dmp

            Filesize

            8KB

          • memory/2028-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/2028-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB