Analysis

  • max time kernel
    25s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    21-11-2022 23:51

General

  • Target

    e3f53c60247a542d726e7b941bf23893bf2ed6d88785e5f82cc8e026ffcf2047.exe

  • Size

    602KB

  • MD5

    75bf9715167f61e667732be96b2a5466

  • SHA1

    f732819117f12a7f400939870fd4926f906f8e56

  • SHA256

    e3f53c60247a542d726e7b941bf23893bf2ed6d88785e5f82cc8e026ffcf2047

  • SHA512

    96f1de0026393b5b219b62c9b4347cba7501767f0c2467dd270a9fbaa38ae56b471f858ea14adce156a9b661106488f4bc4f609e27281c5e4985b6a4833e30b7

  • SSDEEP

    12288:eIny5DYTWXYGQHjRwhusj8dqvyhWyHhPyG2I1Wslsfj9JP3vC:AUTWoGKliF/vyh3PygUsWJvC

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\e3f53c60247a542d726e7b941bf23893bf2ed6d88785e5f82cc8e026ffcf2047.exe
    "C:\Users\Admin\AppData\Local\Temp\e3f53c60247a542d726e7b941bf23893bf2ed6d88785e5f82cc8e026ffcf2047.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:1236
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:996
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:884
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:268
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:760
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:540
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1068
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1728
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:756
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1380
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1404
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1532
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1340

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a2e68169ba7c50a85310416dd4234f07

            SHA1

            54f2b532de4b84b7c5d00dc2da06977332b26ccd

            SHA256

            3f310d5f82ce0bfefeb9723229bc207f089d783185ed0189477520b58a050970

            SHA512

            7bf5a6e21e1d8cdeaa3d46d37f5f4557c166b7e294ae49c8f20a32653ae577d53720f7a4664104700a18a357acf9349935ed78ecfe66553fa2bba8c196895df2

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            96e1d96fe403c789762b71b5959146cd

            SHA1

            29795088ee0b8e08e1c5c52189859b9fae241d09

            SHA256

            59b4521818b50a8a495e16ca444bc207393339e21d62b445686d5ceeeab1b971

            SHA512

            2b2bfc2a3eee5150e3702688a7f0cc517561c3ab5b1ee83900cd3da9643f9d03436574199a21b603e6441accd9aaf8097f5aca159637d502394a1bce64a18521

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6ff541984d67495c96260592b95c1a9c

            SHA1

            d2edb56b1452c43a991f541dc842127619909aa5

            SHA256

            8d0f9ae6f5cb68a1c67ef769808825cab6fbde0d13d5e22f47c755dad695a791

            SHA512

            20d41af8221bab4b534cedfe1b76b26233e3920aa82d4dc6120fe669099bbbf242778969d6b999226e5243c1480535a015279d22cc34fa2b9c1408a6a906b7f4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7a237739c472013a49627849210599de

            SHA1

            33b329b769bc1e14898e4eacb1cf913a8b82c718

            SHA256

            7a53766aca319a521f62f9c546753943fb0527b041286d30d9b9af6b6c727a1d

            SHA512

            9556e94a5629996146a82329d917836d0934643c8629e8b6729f0141fceb88e8c225b0170479a39ee55cffffdc5f3b797773fbae08e27e29720bb518451f49fd

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7a237739c472013a49627849210599de

            SHA1

            33b329b769bc1e14898e4eacb1cf913a8b82c718

            SHA256

            7a53766aca319a521f62f9c546753943fb0527b041286d30d9b9af6b6c727a1d

            SHA512

            9556e94a5629996146a82329d917836d0934643c8629e8b6729f0141fceb88e8c225b0170479a39ee55cffffdc5f3b797773fbae08e27e29720bb518451f49fd

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            aeeabb4ede41808ce9f31b1bf897ba82

            SHA1

            04117282f4552d686cb163770c2643de47f8cd3c

            SHA256

            08d761334d155f5febd492ea5d67519ae594225c86d46139ed99e1f76aa84847

            SHA512

            9e9fff5e49bf11d2667a1525f774f9727fd54d30e036ce540e91d87bc97e95cf01f7c9d5e9c9f49b9bb9a553331bbbee6c3db4b2471fdb07966b86ca1be9873d

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            aeeabb4ede41808ce9f31b1bf897ba82

            SHA1

            04117282f4552d686cb163770c2643de47f8cd3c

            SHA256

            08d761334d155f5febd492ea5d67519ae594225c86d46139ed99e1f76aa84847

            SHA512

            9e9fff5e49bf11d2667a1525f774f9727fd54d30e036ce540e91d87bc97e95cf01f7c9d5e9c9f49b9bb9a553331bbbee6c3db4b2471fdb07966b86ca1be9873d

          • \Users\Admin\AppData\Local\Temp\nst2159.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nst2159.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2159.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2159.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nst2159.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a2e68169ba7c50a85310416dd4234f07

            SHA1

            54f2b532de4b84b7c5d00dc2da06977332b26ccd

            SHA256

            3f310d5f82ce0bfefeb9723229bc207f089d783185ed0189477520b58a050970

            SHA512

            7bf5a6e21e1d8cdeaa3d46d37f5f4557c166b7e294ae49c8f20a32653ae577d53720f7a4664104700a18a357acf9349935ed78ecfe66553fa2bba8c196895df2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a2e68169ba7c50a85310416dd4234f07

            SHA1

            54f2b532de4b84b7c5d00dc2da06977332b26ccd

            SHA256

            3f310d5f82ce0bfefeb9723229bc207f089d783185ed0189477520b58a050970

            SHA512

            7bf5a6e21e1d8cdeaa3d46d37f5f4557c166b7e294ae49c8f20a32653ae577d53720f7a4664104700a18a357acf9349935ed78ecfe66553fa2bba8c196895df2

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            a2e68169ba7c50a85310416dd4234f07

            SHA1

            54f2b532de4b84b7c5d00dc2da06977332b26ccd

            SHA256

            3f310d5f82ce0bfefeb9723229bc207f089d783185ed0189477520b58a050970

            SHA512

            7bf5a6e21e1d8cdeaa3d46d37f5f4557c166b7e294ae49c8f20a32653ae577d53720f7a4664104700a18a357acf9349935ed78ecfe66553fa2bba8c196895df2

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            96e1d96fe403c789762b71b5959146cd

            SHA1

            29795088ee0b8e08e1c5c52189859b9fae241d09

            SHA256

            59b4521818b50a8a495e16ca444bc207393339e21d62b445686d5ceeeab1b971

            SHA512

            2b2bfc2a3eee5150e3702688a7f0cc517561c3ab5b1ee83900cd3da9643f9d03436574199a21b603e6441accd9aaf8097f5aca159637d502394a1bce64a18521

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            96e1d96fe403c789762b71b5959146cd

            SHA1

            29795088ee0b8e08e1c5c52189859b9fae241d09

            SHA256

            59b4521818b50a8a495e16ca444bc207393339e21d62b445686d5ceeeab1b971

            SHA512

            2b2bfc2a3eee5150e3702688a7f0cc517561c3ab5b1ee83900cd3da9643f9d03436574199a21b603e6441accd9aaf8097f5aca159637d502394a1bce64a18521

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            6ff541984d67495c96260592b95c1a9c

            SHA1

            d2edb56b1452c43a991f541dc842127619909aa5

            SHA256

            8d0f9ae6f5cb68a1c67ef769808825cab6fbde0d13d5e22f47c755dad695a791

            SHA512

            20d41af8221bab4b534cedfe1b76b26233e3920aa82d4dc6120fe669099bbbf242778969d6b999226e5243c1480535a015279d22cc34fa2b9c1408a6a906b7f4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            7a237739c472013a49627849210599de

            SHA1

            33b329b769bc1e14898e4eacb1cf913a8b82c718

            SHA256

            7a53766aca319a521f62f9c546753943fb0527b041286d30d9b9af6b6c727a1d

            SHA512

            9556e94a5629996146a82329d917836d0934643c8629e8b6729f0141fceb88e8c225b0170479a39ee55cffffdc5f3b797773fbae08e27e29720bb518451f49fd

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            aeeabb4ede41808ce9f31b1bf897ba82

            SHA1

            04117282f4552d686cb163770c2643de47f8cd3c

            SHA256

            08d761334d155f5febd492ea5d67519ae594225c86d46139ed99e1f76aa84847

            SHA512

            9e9fff5e49bf11d2667a1525f774f9727fd54d30e036ce540e91d87bc97e95cf01f7c9d5e9c9f49b9bb9a553331bbbee6c3db4b2471fdb07966b86ca1be9873d

          • memory/1236-62-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1236-54-0x0000000075B11000-0x0000000075B13000-memory.dmp

            Filesize

            8KB

          • memory/1236-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB