Analysis

  • max time kernel
    47s
  • max time network
    53s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:52

General

  • Target

    c1e38646daf1f01b2445ec1377e1b9bf5f9f13d44c32ececa6bee66d3c680c72.exe

  • Size

    446KB

  • MD5

    25f5350864c3287c1cbe1069b990e0b2

  • SHA1

    fafe7af00c20e8a3cfaf0a537cca802998b732c4

  • SHA256

    c1e38646daf1f01b2445ec1377e1b9bf5f9f13d44c32ececa6bee66d3c680c72

  • SHA512

    5d7dc900afbade8858bbd0c61600cf14161a259554855df784bbd1f79acf951b5c82de46cf73c92f526a571e6dfdea5721eb8ff42eac014aee7207849af4e6b4

  • SSDEEP

    12288:rugQgsZjdRnBoD1Zey/cgRB28hDdHm+2SH+kmt:rKZnRBoesDSAQ

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\c1e38646daf1f01b2445ec1377e1b9bf5f9f13d44c32ececa6bee66d3c680c72.exe
    "C:\Users\Admin\AppData\Local\Temp\c1e38646daf1f01b2445ec1377e1b9bf5f9f13d44c32ececa6bee66d3c680c72.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:1260
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1948
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:944
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1624
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1896
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1760
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1340
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1700
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:672
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:2004
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1888
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1592
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:2024
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1800

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          1
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c4492b089dfe1f2d0ad9b28eaa509747

            SHA1

            824e85003f1d8041903035a6a9f4b8720379790e

            SHA256

            b7db8e805d6742f51df188b339158ea965b48f406733eb799f8e94deee8d38b8

            SHA512

            b72e0add95e90c4b30d43cb13e6ce70a350a3d120eca569029dbe354e9812a8d0ae2a8a35c5f359a195eb852f75ecd9da1a2b69402bf0dc5c52c0548b66cfaa0

          • C:\Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b0cd072ba898f88e58942fd25e678322

            SHA1

            539ecc0850854617bf01758b075667d51756e34b

            SHA256

            123342c419e444588e3f58b15f3b3a28345f79029bff2e24214c546885268dc1

            SHA512

            db277cce1c06ec12784e8c55ef98cc4604c036750b0eed41bce1c17779948dceb26edf432ddc4138f5d873ba9061eed832619dcd5af4eb5fd55d5b8a430da0c0

          • C:\Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            37f055af0c24f8e8a0fb60b80a08851e

            SHA1

            d62a4d148bba0c1cbc9dad6fdc2ba6b9da957353

            SHA256

            1d54ad8fef1d824c9b77c0d5872abdc8a5451a628daec8da78815ed0b1f31f7a

            SHA512

            806318a1033bed9d5b01ed131c310d886938054d90af047727be7111b01570456b99a90dedd96d35b9aa34e0fa3486124e9c18430dfb0809eb5ab04caeda072d

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ef9ee65fe7fc3e995518327c38bfb4e6

            SHA1

            cbd2977ae0097d20f671365bff4920443fc99fc1

            SHA256

            bc3e6dc718c2054faf76aefcd07ed4f9221a39c69543228aee9a2b0f039dd09d

            SHA512

            20948aadc0f766245dd0245547396c1b71a7692f3a1af54d71d5088949abba347dea4a55ce84b69f4d009fa094e488b068a41273e1c5307ae4cc5be958649cb1

          • C:\Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ef9ee65fe7fc3e995518327c38bfb4e6

            SHA1

            cbd2977ae0097d20f671365bff4920443fc99fc1

            SHA256

            bc3e6dc718c2054faf76aefcd07ed4f9221a39c69543228aee9a2b0f039dd09d

            SHA512

            20948aadc0f766245dd0245547396c1b71a7692f3a1af54d71d5088949abba347dea4a55ce84b69f4d009fa094e488b068a41273e1c5307ae4cc5be958649cb1

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            2f0436505405aca195cac2e734566ee2

            SHA1

            a4913ad344eba0d77e89ea48e7b77d89f0c1dc14

            SHA256

            f4ab191f493910f7be314dcb1be832f83f9f7a434011326a9908c109f7a00243

            SHA512

            ffbc6de00b70797e628265a9fdc5e745052d4e16ae98b3d802c91990efa6615166419ff786f9f9bbdc9c2ea42a790aa6240704693fab96e20421e8798840d83e

          • C:\Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            2f0436505405aca195cac2e734566ee2

            SHA1

            a4913ad344eba0d77e89ea48e7b77d89f0c1dc14

            SHA256

            f4ab191f493910f7be314dcb1be832f83f9f7a434011326a9908c109f7a00243

            SHA512

            ffbc6de00b70797e628265a9fdc5e745052d4e16ae98b3d802c91990efa6615166419ff786f9f9bbdc9c2ea42a790aa6240704693fab96e20421e8798840d83e

          • \Users\Admin\AppData\Local\Temp\nsj33B1.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj33B1.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj33B1.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj33B1.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj33B1.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c4492b089dfe1f2d0ad9b28eaa509747

            SHA1

            824e85003f1d8041903035a6a9f4b8720379790e

            SHA256

            b7db8e805d6742f51df188b339158ea965b48f406733eb799f8e94deee8d38b8

            SHA512

            b72e0add95e90c4b30d43cb13e6ce70a350a3d120eca569029dbe354e9812a8d0ae2a8a35c5f359a195eb852f75ecd9da1a2b69402bf0dc5c52c0548b66cfaa0

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c4492b089dfe1f2d0ad9b28eaa509747

            SHA1

            824e85003f1d8041903035a6a9f4b8720379790e

            SHA256

            b7db8e805d6742f51df188b339158ea965b48f406733eb799f8e94deee8d38b8

            SHA512

            b72e0add95e90c4b30d43cb13e6ce70a350a3d120eca569029dbe354e9812a8d0ae2a8a35c5f359a195eb852f75ecd9da1a2b69402bf0dc5c52c0548b66cfaa0

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c4492b089dfe1f2d0ad9b28eaa509747

            SHA1

            824e85003f1d8041903035a6a9f4b8720379790e

            SHA256

            b7db8e805d6742f51df188b339158ea965b48f406733eb799f8e94deee8d38b8

            SHA512

            b72e0add95e90c4b30d43cb13e6ce70a350a3d120eca569029dbe354e9812a8d0ae2a8a35c5f359a195eb852f75ecd9da1a2b69402bf0dc5c52c0548b66cfaa0

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b0cd072ba898f88e58942fd25e678322

            SHA1

            539ecc0850854617bf01758b075667d51756e34b

            SHA256

            123342c419e444588e3f58b15f3b3a28345f79029bff2e24214c546885268dc1

            SHA512

            db277cce1c06ec12784e8c55ef98cc4604c036750b0eed41bce1c17779948dceb26edf432ddc4138f5d873ba9061eed832619dcd5af4eb5fd55d5b8a430da0c0

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            b0cd072ba898f88e58942fd25e678322

            SHA1

            539ecc0850854617bf01758b075667d51756e34b

            SHA256

            123342c419e444588e3f58b15f3b3a28345f79029bff2e24214c546885268dc1

            SHA512

            db277cce1c06ec12784e8c55ef98cc4604c036750b0eed41bce1c17779948dceb26edf432ddc4138f5d873ba9061eed832619dcd5af4eb5fd55d5b8a430da0c0

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            37f055af0c24f8e8a0fb60b80a08851e

            SHA1

            d62a4d148bba0c1cbc9dad6fdc2ba6b9da957353

            SHA256

            1d54ad8fef1d824c9b77c0d5872abdc8a5451a628daec8da78815ed0b1f31f7a

            SHA512

            806318a1033bed9d5b01ed131c310d886938054d90af047727be7111b01570456b99a90dedd96d35b9aa34e0fa3486124e9c18430dfb0809eb5ab04caeda072d

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            ef9ee65fe7fc3e995518327c38bfb4e6

            SHA1

            cbd2977ae0097d20f671365bff4920443fc99fc1

            SHA256

            bc3e6dc718c2054faf76aefcd07ed4f9221a39c69543228aee9a2b0f039dd09d

            SHA512

            20948aadc0f766245dd0245547396c1b71a7692f3a1af54d71d5088949abba347dea4a55ce84b69f4d009fa094e488b068a41273e1c5307ae4cc5be958649cb1

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            2f0436505405aca195cac2e734566ee2

            SHA1

            a4913ad344eba0d77e89ea48e7b77d89f0c1dc14

            SHA256

            f4ab191f493910f7be314dcb1be832f83f9f7a434011326a9908c109f7a00243

            SHA512

            ffbc6de00b70797e628265a9fdc5e745052d4e16ae98b3d802c91990efa6615166419ff786f9f9bbdc9c2ea42a790aa6240704693fab96e20421e8798840d83e

          • memory/672-79-0x0000000000000000-mapping.dmp
          • memory/944-58-0x0000000000000000-mapping.dmp
          • memory/1260-54-0x0000000075091000-0x0000000075093000-memory.dmp
            Filesize

            8KB

          • memory/1340-69-0x0000000000000000-mapping.dmp
          • memory/1592-86-0x0000000000000000-mapping.dmp
          • memory/1624-60-0x0000000000000000-mapping.dmp
          • memory/1700-75-0x0000000000000000-mapping.dmp
          • memory/1760-63-0x0000000000000000-mapping.dmp
          • memory/1888-85-0x0000000000000000-mapping.dmp
          • memory/1896-61-0x0000000000000000-mapping.dmp
          • memory/1948-57-0x0000000000000000-mapping.dmp
          • memory/2004-80-0x0000000000000000-mapping.dmp