Analysis

  • max time kernel
    90s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-11-2022 10:11

General

  • Target

    d541782c55feb7b0d3941a37ba96537ed90a3c92e0ece4cc64889f2a8f6e35ab.exe

  • Size

    602KB

  • MD5

    8f2b42a62bb45ea5c77a3e3f0547ac56

  • SHA1

    d2158063381c43c1930c47030fd605e798f621bd

  • SHA256

    d541782c55feb7b0d3941a37ba96537ed90a3c92e0ece4cc64889f2a8f6e35ab

  • SHA512

    52f864def63ced1bee852b6fba08ad8b0f2479cce53bb567ea92b9b1111b4cc760d5bdd61bfa8150b0448bae9b90d52fcf6d994eda08a3a8b40a9eacfc38ba07

  • SSDEEP

    12288:nIny5DYTgaabXS3YHgQ6YCC4VHPRV1Vy9JaBQJnhpPnGmSa12GJaJGSyqBj:vUTg7XSC4VH/+JaaTpu/a1ZDSfB

Score
8/10

Malware Config

Signatures

  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 14 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.

  • Modifies data under HKEY_USERS 1 IoCs
  • Runs net.exe
  • Suspicious behavior: LoadsDriver 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d541782c55feb7b0d3941a37ba96537ed90a3c92e0ece4cc64889f2a8f6e35ab.exe
    "C:\Users\Admin\AppData\Local\Temp\d541782c55feb7b0d3941a37ba96537ed90a3c92e0ece4cc64889f2a8f6e35ab.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:796
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:4336
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1704
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1396
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3128
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3308
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2816
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:5004
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1216
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:5116
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4932
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Modifies data under HKEY_USERS
            • Suspicious use of AdjustPrivilegeToken
            PID:2716
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2520

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nssDAE6.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd19cc0c291f11666b3176d263f9f882

            SHA1

            6f247ed1eaa162e7617a5b4033986cfa41b406c4

            SHA256

            564678c320dd98cbe198a33791387a27208271a5a28a2ce80890d2707360115a

            SHA512

            2e267b1d29816034647a4244501ca089252d9b00ce6b3608bdb88e182e2bf82ffe4f2598e85120f478f1da5055e9ff0f9348472e3de3f1b67ee8020ba603ee2b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd19cc0c291f11666b3176d263f9f882

            SHA1

            6f247ed1eaa162e7617a5b4033986cfa41b406c4

            SHA256

            564678c320dd98cbe198a33791387a27208271a5a28a2ce80890d2707360115a

            SHA512

            2e267b1d29816034647a4244501ca089252d9b00ce6b3608bdb88e182e2bf82ffe4f2598e85120f478f1da5055e9ff0f9348472e3de3f1b67ee8020ba603ee2b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd19cc0c291f11666b3176d263f9f882

            SHA1

            6f247ed1eaa162e7617a5b4033986cfa41b406c4

            SHA256

            564678c320dd98cbe198a33791387a27208271a5a28a2ce80890d2707360115a

            SHA512

            2e267b1d29816034647a4244501ca089252d9b00ce6b3608bdb88e182e2bf82ffe4f2598e85120f478f1da5055e9ff0f9348472e3de3f1b67ee8020ba603ee2b

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            cd19cc0c291f11666b3176d263f9f882

            SHA1

            6f247ed1eaa162e7617a5b4033986cfa41b406c4

            SHA256

            564678c320dd98cbe198a33791387a27208271a5a28a2ce80890d2707360115a

            SHA512

            2e267b1d29816034647a4244501ca089252d9b00ce6b3608bdb88e182e2bf82ffe4f2598e85120f478f1da5055e9ff0f9348472e3de3f1b67ee8020ba603ee2b

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            bd26a9d8078b666d185f92de757ede6d

            SHA1

            4db86e6de82c54b76d15eb634bca978eca4d8539

            SHA256

            8779aaef87099866b4a8d74d894cc7ce48003711a3b9f9a19cb40266133a436d

            SHA512

            b72a31fe20bb02c34ff9821b3a6b3383428d0ef3ece7a5363bd5ad97a0138692169107e409b8a0a854bb2f0e3bba8b412e8daa27e7d8613d9e76239d19194305

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            bd26a9d8078b666d185f92de757ede6d

            SHA1

            4db86e6de82c54b76d15eb634bca978eca4d8539

            SHA256

            8779aaef87099866b4a8d74d894cc7ce48003711a3b9f9a19cb40266133a436d

            SHA512

            b72a31fe20bb02c34ff9821b3a6b3383428d0ef3ece7a5363bd5ad97a0138692169107e409b8a0a854bb2f0e3bba8b412e8daa27e7d8613d9e76239d19194305

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            bd26a9d8078b666d185f92de757ede6d

            SHA1

            4db86e6de82c54b76d15eb634bca978eca4d8539

            SHA256

            8779aaef87099866b4a8d74d894cc7ce48003711a3b9f9a19cb40266133a436d

            SHA512

            b72a31fe20bb02c34ff9821b3a6b3383428d0ef3ece7a5363bd5ad97a0138692169107e409b8a0a854bb2f0e3bba8b412e8daa27e7d8613d9e76239d19194305

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ad0d2e712cf136d3619514f3b2f12f03

            SHA1

            5b98a6481434d428169181831ca71f6f34496f3c

            SHA256

            53df5099a22b0e1798480996595f4cca8e62ae8e1b83dc30152a2252155b2fa4

            SHA512

            af49297130b0197a7ffd7f654a756dbbd1c669116b34e8b4f470ef57270084d48c572c7709eaadfc34c4c5c6bd61674b52c8e91290eeab7564c9d60fe09aaaaf

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            ad0d2e712cf136d3619514f3b2f12f03

            SHA1

            5b98a6481434d428169181831ca71f6f34496f3c

            SHA256

            53df5099a22b0e1798480996595f4cca8e62ae8e1b83dc30152a2252155b2fa4

            SHA512

            af49297130b0197a7ffd7f654a756dbbd1c669116b34e8b4f470ef57270084d48c572c7709eaadfc34c4c5c6bd61674b52c8e91290eeab7564c9d60fe09aaaaf

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c0ac39cc45bd46b3e842258807195e88

            SHA1

            31387c855447137b82005afe0ad1d037f77057f3

            SHA256

            1d9a50137b005de2bba417518c27973bd01449494bb205160a716d20e9f1a132

            SHA512

            cbba8415dfc704fec2808cecb147968a2a678aa6f5879a01cd2111436908a5d867b69c761134be71f87e562467c778e5f791d09908e385b5993ca2f61686bce7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c0ac39cc45bd46b3e842258807195e88

            SHA1

            31387c855447137b82005afe0ad1d037f77057f3

            SHA256

            1d9a50137b005de2bba417518c27973bd01449494bb205160a716d20e9f1a132

            SHA512

            cbba8415dfc704fec2808cecb147968a2a678aa6f5879a01cd2111436908a5d867b69c761134be71f87e562467c778e5f791d09908e385b5993ca2f61686bce7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            c0ac39cc45bd46b3e842258807195e88

            SHA1

            31387c855447137b82005afe0ad1d037f77057f3

            SHA256

            1d9a50137b005de2bba417518c27973bd01449494bb205160a716d20e9f1a132

            SHA512

            cbba8415dfc704fec2808cecb147968a2a678aa6f5879a01cd2111436908a5d867b69c761134be71f87e562467c778e5f791d09908e385b5993ca2f61686bce7

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            02cb83ab2512fb2674147cf9a2edfe56

            SHA1

            2991142e7a3a5f3faa88383d296b567f8e586316

            SHA256

            eb46835d4315851d8190aadcffb38acaf6edf3a86f7afa3d93a5bf447673c696

            SHA512

            5cbbde011181da4871508c3867f440d63f9c66686b92c372f6507e45c0b8d33205b5c074efff0e792a55ba5fdd395e0d8a33017ddf819d638c9fc5caea2096e0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            02cb83ab2512fb2674147cf9a2edfe56

            SHA1

            2991142e7a3a5f3faa88383d296b567f8e586316

            SHA256

            eb46835d4315851d8190aadcffb38acaf6edf3a86f7afa3d93a5bf447673c696

            SHA512

            5cbbde011181da4871508c3867f440d63f9c66686b92c372f6507e45c0b8d33205b5c074efff0e792a55ba5fdd395e0d8a33017ddf819d638c9fc5caea2096e0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            02cb83ab2512fb2674147cf9a2edfe56

            SHA1

            2991142e7a3a5f3faa88383d296b567f8e586316

            SHA256

            eb46835d4315851d8190aadcffb38acaf6edf3a86f7afa3d93a5bf447673c696

            SHA512

            5cbbde011181da4871508c3867f440d63f9c66686b92c372f6507e45c0b8d33205b5c074efff0e792a55ba5fdd395e0d8a33017ddf819d638c9fc5caea2096e0

          • memory/796-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/796-132-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1216-159-0x0000000000000000-mapping.dmp

          • memory/1396-141-0x0000000000000000-mapping.dmp

          • memory/1704-140-0x0000000000000000-mapping.dmp

          • memory/2816-153-0x0000000000000000-mapping.dmp

          • memory/3128-142-0x0000000000000000-mapping.dmp

          • memory/3308-147-0x0000000000000000-mapping.dmp

          • memory/4000-136-0x0000000000000000-mapping.dmp

          • memory/4336-137-0x0000000000000000-mapping.dmp

          • memory/4932-166-0x0000000000000000-mapping.dmp

          • memory/5004-158-0x0000000000000000-mapping.dmp

          • memory/5116-165-0x0000000000000000-mapping.dmp