Analysis

  • max time kernel
    68s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:21

General

  • Target

    811c7684fa6b43944866cf630992a33ce76d184f123bbc4afdcb54558bec112b.exe

  • Size

    602KB

  • MD5

    8fb2a6299c194a1f55f92fcd460419e1

  • SHA1

    ec58eb1246caa225ac0212df0130c65e1f08d9c3

  • SHA256

    811c7684fa6b43944866cf630992a33ce76d184f123bbc4afdcb54558bec112b

  • SHA512

    48a5d54cb6f16b456047b6adde900e0608bff8a341c348beb4e2fb9c337189aa0a5d7b08208889cce6713df8ad1e22c11b43d58d4db4d45b719d0bb5f83dacda

  • SSDEEP

    12288:8Iny5DYTYHUn65Lc/Ub4NdLBg0HzfuFvtihzm:aUTFaL0vNg0TmFvsh

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\811c7684fa6b43944866cf630992a33ce76d184f123bbc4afdcb54558bec112b.exe
    "C:\Users\Admin\AppData\Local\Temp\811c7684fa6b43944866cf630992a33ce76d184f123bbc4afdcb54558bec112b.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:1332
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:992
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:592
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:676
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1180
        • 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:692
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1680
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1988
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1752
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1724
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1400
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1356

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ad65e70276fa658ce196cdfebe6f327b

            SHA1

            0c0a281dfd13216ec93ccb94969cc10921ae9058

            SHA256

            8dad68edb695865005785fedbebe52532a96166c41afa853e980fe0edd17cab2

            SHA512

            a12ffc1e13311b3d537b3817755e12fa52afa241761f8741fd4818932dddd556bf7b5fad0abd5ee7a8b45a1162e3a8adf8208b3bddf94e35a454951fab9a8080

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ac1dcc1ba2a4e4e882716da1d3253ec6

            SHA1

            23a7bc10b1cdb5f65e96d92bb44d51d8b1953563

            SHA256

            65c21fa537d933726245c52de4182e14ee6e5f4738b0ecbdcb411bf1e3900677

            SHA512

            f1bcbd7fba8620ce8b01b29ad251c177e3157c522592df6c45c8339e76bfa858d7dd2f0335beb12c5b5942f16e225d929c41a38480f1bc8cb178c16a95ab4162

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            60a095f54fefc481add0272cd1d012e4

            SHA1

            972beb72daf9fe64913c2be05152faf8eae4f39b

            SHA256

            8311cec51462d4760827cd89ed6ddd5f8b95d159e10e385bcdaab4efc6ff4927

            SHA512

            b84a69cb897695f00c8ecdc6c079de3e1bac1a7b372286bd9fac2eae777f0d75b8bc2135363e9f8393fc48e6b63df654606ccdeffabf88d9e38d3f6c99c0c90c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            78b7a468919049b2b5367125af42ab10

            SHA1

            f67120feb0dd20bc470cbb294ab0456f2f9881d8

            SHA256

            c9a71348dabb46898406b9b7eb46f3c5affeb319b16f10137ca8b315f251c3f6

            SHA512

            b837a5c02bdbb16b9e9202266baf0dd354aacad854d8b7db7b6807607bf2ac2557b01aefa27f0d71583dfce0be122e9f8c2af70fee5c8c5068d706465d863897

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            78b7a468919049b2b5367125af42ab10

            SHA1

            f67120feb0dd20bc470cbb294ab0456f2f9881d8

            SHA256

            c9a71348dabb46898406b9b7eb46f3c5affeb319b16f10137ca8b315f251c3f6

            SHA512

            b837a5c02bdbb16b9e9202266baf0dd354aacad854d8b7db7b6807607bf2ac2557b01aefa27f0d71583dfce0be122e9f8c2af70fee5c8c5068d706465d863897

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            22748f8b2d3d374996ed3b6dc541e81e

            SHA1

            aa0c8663b04f259af68cca940dc10f8ad063e865

            SHA256

            99b78ff378425e1d467b50d7de1c6860485d6fb2f41e90391f7c857cab626c85

            SHA512

            4d10dccf2c7477d35327109226468685a9be0d819e27f6f8cb4f2f7841949981a5599fc1dd1dea4f582fd744b926df810607016b89f367156303f1bb4630a95a

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            22748f8b2d3d374996ed3b6dc541e81e

            SHA1

            aa0c8663b04f259af68cca940dc10f8ad063e865

            SHA256

            99b78ff378425e1d467b50d7de1c6860485d6fb2f41e90391f7c857cab626c85

            SHA512

            4d10dccf2c7477d35327109226468685a9be0d819e27f6f8cb4f2f7841949981a5599fc1dd1dea4f582fd744b926df810607016b89f367156303f1bb4630a95a

          • \Users\Admin\AppData\Local\Temp\nsj5361.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj5361.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj5361.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj5361.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj5361.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ad65e70276fa658ce196cdfebe6f327b

            SHA1

            0c0a281dfd13216ec93ccb94969cc10921ae9058

            SHA256

            8dad68edb695865005785fedbebe52532a96166c41afa853e980fe0edd17cab2

            SHA512

            a12ffc1e13311b3d537b3817755e12fa52afa241761f8741fd4818932dddd556bf7b5fad0abd5ee7a8b45a1162e3a8adf8208b3bddf94e35a454951fab9a8080

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ad65e70276fa658ce196cdfebe6f327b

            SHA1

            0c0a281dfd13216ec93ccb94969cc10921ae9058

            SHA256

            8dad68edb695865005785fedbebe52532a96166c41afa853e980fe0edd17cab2

            SHA512

            a12ffc1e13311b3d537b3817755e12fa52afa241761f8741fd4818932dddd556bf7b5fad0abd5ee7a8b45a1162e3a8adf8208b3bddf94e35a454951fab9a8080

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            ad65e70276fa658ce196cdfebe6f327b

            SHA1

            0c0a281dfd13216ec93ccb94969cc10921ae9058

            SHA256

            8dad68edb695865005785fedbebe52532a96166c41afa853e980fe0edd17cab2

            SHA512

            a12ffc1e13311b3d537b3817755e12fa52afa241761f8741fd4818932dddd556bf7b5fad0abd5ee7a8b45a1162e3a8adf8208b3bddf94e35a454951fab9a8080

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ac1dcc1ba2a4e4e882716da1d3253ec6

            SHA1

            23a7bc10b1cdb5f65e96d92bb44d51d8b1953563

            SHA256

            65c21fa537d933726245c52de4182e14ee6e5f4738b0ecbdcb411bf1e3900677

            SHA512

            f1bcbd7fba8620ce8b01b29ad251c177e3157c522592df6c45c8339e76bfa858d7dd2f0335beb12c5b5942f16e225d929c41a38480f1bc8cb178c16a95ab4162

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            ac1dcc1ba2a4e4e882716da1d3253ec6

            SHA1

            23a7bc10b1cdb5f65e96d92bb44d51d8b1953563

            SHA256

            65c21fa537d933726245c52de4182e14ee6e5f4738b0ecbdcb411bf1e3900677

            SHA512

            f1bcbd7fba8620ce8b01b29ad251c177e3157c522592df6c45c8339e76bfa858d7dd2f0335beb12c5b5942f16e225d929c41a38480f1bc8cb178c16a95ab4162

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            60a095f54fefc481add0272cd1d012e4

            SHA1

            972beb72daf9fe64913c2be05152faf8eae4f39b

            SHA256

            8311cec51462d4760827cd89ed6ddd5f8b95d159e10e385bcdaab4efc6ff4927

            SHA512

            b84a69cb897695f00c8ecdc6c079de3e1bac1a7b372286bd9fac2eae777f0d75b8bc2135363e9f8393fc48e6b63df654606ccdeffabf88d9e38d3f6c99c0c90c

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            78b7a468919049b2b5367125af42ab10

            SHA1

            f67120feb0dd20bc470cbb294ab0456f2f9881d8

            SHA256

            c9a71348dabb46898406b9b7eb46f3c5affeb319b16f10137ca8b315f251c3f6

            SHA512

            b837a5c02bdbb16b9e9202266baf0dd354aacad854d8b7db7b6807607bf2ac2557b01aefa27f0d71583dfce0be122e9f8c2af70fee5c8c5068d706465d863897

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            22748f8b2d3d374996ed3b6dc541e81e

            SHA1

            aa0c8663b04f259af68cca940dc10f8ad063e865

            SHA256

            99b78ff378425e1d467b50d7de1c6860485d6fb2f41e90391f7c857cab626c85

            SHA512

            4d10dccf2c7477d35327109226468685a9be0d819e27f6f8cb4f2f7841949981a5599fc1dd1dea4f582fd744b926df810607016b89f367156303f1bb4630a95a

          • memory/576-57-0x0000000000000000-mapping.dmp

          • memory/592-61-0x0000000000000000-mapping.dmp

          • memory/676-62-0x0000000000000000-mapping.dmp

          • memory/692-77-0x0000000000000000-mapping.dmp

          • memory/992-58-0x0000000000000000-mapping.dmp

          • memory/1180-64-0x0000000000000000-mapping.dmp

          • memory/1332-69-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1332-54-0x00000000752B1000-0x00000000752B3000-memory.dmp

            Filesize

            8KB

          • memory/1332-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1332-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1656-71-0x0000000000000000-mapping.dmp

          • memory/1680-81-0x0000000000000000-mapping.dmp

          • memory/1724-88-0x0000000000000000-mapping.dmp

          • memory/1752-87-0x0000000000000000-mapping.dmp

          • memory/1988-82-0x0000000000000000-mapping.dmp