Analysis

  • max time kernel
    64s
  • max time network
    34s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:34

General

  • Target

    03eae8b7cb683d602042501e3defc422f559de4888766d5b0ef4173e0867ab8c.exe

  • Size

    602KB

  • MD5

    c4977ea4495336e28cb3c92d27bb435e

  • SHA1

    c95946a2b837f1ea014934c0eb6798b413d7b936

  • SHA256

    03eae8b7cb683d602042501e3defc422f559de4888766d5b0ef4173e0867ab8c

  • SHA512

    35d071185871071e9500c8ec094e62211a3d00eebdde4ed709bc1158f759053973a7b2fbe4c5ce2cc86cbb21f73edc3add1ecfcd62c682782b3b0ed43d4f6c83

  • SSDEEP

    12288:SIny5DYTkItONDvuCJPlltkvZYuueQG86UNrg38eG3:UUTkGO52CJt8vZeL16UNrK8eM

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\03eae8b7cb683d602042501e3defc422f559de4888766d5b0ef4173e0867ab8c.exe
    "C:\Users\Admin\AppData\Local\Temp\03eae8b7cb683d602042501e3defc422f559de4888766d5b0ef4173e0867ab8c.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:1632
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1752
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1768
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:468
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1332
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:532
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:272
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1092
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1896
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1168
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1624
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1528
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1300

          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

            c3136f5852c730e09e68f9d6ed4e7804

            SHA1

            39c7c0398c2a8b8183f43a3516b3d63bf141c7b6

            SHA256

            098434e04fef1ed9098f1e13b183c52b04683036900d3413252afaee52e3e518

            SHA512

            2ecb3079fd326b07438823927495a5a14f6abbc52526990e7baffc51a8d7f66fed64f79c58a275ede533f6ac072d9d11cef640da4bfb9316be2a708aa18b4fe5

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

            244KB

            MD5

            0b76d55fdc43182936ca96f40cc45896

            SHA1

            76c3ede6a2f7d4764982b5be35e503722b8a85ab

            SHA256

            522932636c67e8a06a638502f7eb0aaa138debd27913c359dfb9348e18e678ca

            SHA512

            87d29cd2bd24fa54c1524d4084b817a024ca2543c322c44280605b7fdd7115a14175667afa5e7c3d504caa26f55f0ff63a042fb74a1361b0c40378b25301694f

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

            108KB

            MD5

            8d6a31226c2cc9b7e7a35e80c7d89e7b

            SHA1

            2aec51ff8b32b78db352620447027362cd898971

            SHA256

            9b56bdd8b5f98a88e310eff4317de856184c913416de57d28a18b17941d899b2

            SHA512

            c7f65b3a9e1c2bb442873a4db5d203d6645080372744d53f16744fe97dff367547d34ec297b48e0900d35317979c2f425b4716950904e840067a1bc62a859670

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

            176KB

            MD5

            676d7d3887f9bd7ef836e9c96db64747

            SHA1

            b3b35445a898197c14a0d0f3bf142a4273953860

            SHA256

            7f3cdff98412ab938d1c3b4ef6958d5e744deb1a700abade97e3539f93bec0f9

            SHA512

            665c967e4065fc6e51d2dc13dde40edd82c9ec9ff0f74f73c9c7eea6e515fc0e1c4a565ef5eb5a466c7c1601fd142e35bfb7c5dcdf7269bb836a32122803eb09

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

            176KB

            MD5

            676d7d3887f9bd7ef836e9c96db64747

            SHA1

            b3b35445a898197c14a0d0f3bf142a4273953860

            SHA256

            7f3cdff98412ab938d1c3b4ef6958d5e744deb1a700abade97e3539f93bec0f9

            SHA512

            665c967e4065fc6e51d2dc13dde40edd82c9ec9ff0f74f73c9c7eea6e515fc0e1c4a565ef5eb5a466c7c1601fd142e35bfb7c5dcdf7269bb836a32122803eb09

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

            159KB

            MD5

            871e16bb620c12ed6cde27697ab72ba6

            SHA1

            9fdabba225ed42ca34e753973f29cb62ec3b35c5

            SHA256

            043baaf7b3b53ba706e7aa05050ed0a04a7f64a63a6d64fe45793997abc51df6

            SHA512

            2c9e2216496f07aba5db9d360fbabd88e869851f66e0deb47bb12b3ed7047da66e6f5e56a0dc55ebaf07f9367e88b19468d54f11837ade051b171ed25f215bf6

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

            159KB

            MD5

            871e16bb620c12ed6cde27697ab72ba6

            SHA1

            9fdabba225ed42ca34e753973f29cb62ec3b35c5

            SHA256

            043baaf7b3b53ba706e7aa05050ed0a04a7f64a63a6d64fe45793997abc51df6

            SHA512

            2c9e2216496f07aba5db9d360fbabd88e869851f66e0deb47bb12b3ed7047da66e6f5e56a0dc55ebaf07f9367e88b19468d54f11837ade051b171ed25f215bf6

          • \Users\Admin\AppData\Local\Temp\nso626E.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nso626E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso626E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso626E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nso626E.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c3136f5852c730e09e68f9d6ed4e7804

            SHA1

            39c7c0398c2a8b8183f43a3516b3d63bf141c7b6

            SHA256

            098434e04fef1ed9098f1e13b183c52b04683036900d3413252afaee52e3e518

            SHA512

            2ecb3079fd326b07438823927495a5a14f6abbc52526990e7baffc51a8d7f66fed64f79c58a275ede533f6ac072d9d11cef640da4bfb9316be2a708aa18b4fe5

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c3136f5852c730e09e68f9d6ed4e7804

            SHA1

            39c7c0398c2a8b8183f43a3516b3d63bf141c7b6

            SHA256

            098434e04fef1ed9098f1e13b183c52b04683036900d3413252afaee52e3e518

            SHA512

            2ecb3079fd326b07438823927495a5a14f6abbc52526990e7baffc51a8d7f66fed64f79c58a275ede533f6ac072d9d11cef640da4bfb9316be2a708aa18b4fe5

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            c3136f5852c730e09e68f9d6ed4e7804

            SHA1

            39c7c0398c2a8b8183f43a3516b3d63bf141c7b6

            SHA256

            098434e04fef1ed9098f1e13b183c52b04683036900d3413252afaee52e3e518

            SHA512

            2ecb3079fd326b07438823927495a5a14f6abbc52526990e7baffc51a8d7f66fed64f79c58a275ede533f6ac072d9d11cef640da4bfb9316be2a708aa18b4fe5

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            0b76d55fdc43182936ca96f40cc45896

            SHA1

            76c3ede6a2f7d4764982b5be35e503722b8a85ab

            SHA256

            522932636c67e8a06a638502f7eb0aaa138debd27913c359dfb9348e18e678ca

            SHA512

            87d29cd2bd24fa54c1524d4084b817a024ca2543c322c44280605b7fdd7115a14175667afa5e7c3d504caa26f55f0ff63a042fb74a1361b0c40378b25301694f

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            0b76d55fdc43182936ca96f40cc45896

            SHA1

            76c3ede6a2f7d4764982b5be35e503722b8a85ab

            SHA256

            522932636c67e8a06a638502f7eb0aaa138debd27913c359dfb9348e18e678ca

            SHA512

            87d29cd2bd24fa54c1524d4084b817a024ca2543c322c44280605b7fdd7115a14175667afa5e7c3d504caa26f55f0ff63a042fb74a1361b0c40378b25301694f

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            8d6a31226c2cc9b7e7a35e80c7d89e7b

            SHA1

            2aec51ff8b32b78db352620447027362cd898971

            SHA256

            9b56bdd8b5f98a88e310eff4317de856184c913416de57d28a18b17941d899b2

            SHA512

            c7f65b3a9e1c2bb442873a4db5d203d6645080372744d53f16744fe97dff367547d34ec297b48e0900d35317979c2f425b4716950904e840067a1bc62a859670

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            676d7d3887f9bd7ef836e9c96db64747

            SHA1

            b3b35445a898197c14a0d0f3bf142a4273953860

            SHA256

            7f3cdff98412ab938d1c3b4ef6958d5e744deb1a700abade97e3539f93bec0f9

            SHA512

            665c967e4065fc6e51d2dc13dde40edd82c9ec9ff0f74f73c9c7eea6e515fc0e1c4a565ef5eb5a466c7c1601fd142e35bfb7c5dcdf7269bb836a32122803eb09

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            159KB

            MD5

            871e16bb620c12ed6cde27697ab72ba6

            SHA1

            9fdabba225ed42ca34e753973f29cb62ec3b35c5

            SHA256

            043baaf7b3b53ba706e7aa05050ed0a04a7f64a63a6d64fe45793997abc51df6

            SHA512

            2c9e2216496f07aba5db9d360fbabd88e869851f66e0deb47bb12b3ed7047da66e6f5e56a0dc55ebaf07f9367e88b19468d54f11837ade051b171ed25f215bf6

          • memory/272-77-0x0000000000000000-mapping.dmp
          • memory/468-62-0x0000000000000000-mapping.dmp
          • memory/532-71-0x0000000000000000-mapping.dmp
          • memory/1092-81-0x0000000000000000-mapping.dmp
          • memory/1168-87-0x0000000000000000-mapping.dmp
          • memory/1332-65-0x0000000000000000-mapping.dmp
          • memory/1428-58-0x0000000000000000-mapping.dmp
          • memory/1624-88-0x0000000000000000-mapping.dmp
          • memory/1632-54-0x0000000075BE1000-0x0000000075BE3000-memory.dmp
            Filesize

            8KB

          • memory/1632-63-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1632-55-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1632-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1752-59-0x0000000000000000-mapping.dmp
          • memory/1768-61-0x0000000000000000-mapping.dmp
          • memory/1896-82-0x0000000000000000-mapping.dmp