Analysis

  • max time kernel
    90s
  • max time network
    155s
  • 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 10:26

General

  • Target

    4c1d2efdf9d11099695d74ace930897ff357b584cf97e92ccf430e836d291db3.exe

  • Size

    601KB

  • MD5

    af6a0db13007b84d90014b5a503f5513

  • SHA1

    b237548a0b902cfefea8c0f63c4a9cd5b424a41d

  • SHA256

    4c1d2efdf9d11099695d74ace930897ff357b584cf97e92ccf430e836d291db3

  • SHA512

    0d2d5783a5d4c5d2bdc9162c00545befc0a6b68f311ef702ac9afff194b209d001e1122e01dc9cface92b9bebbcc83cff149e1afc45a33e53b66e85babd499bd

  • SSDEEP

    12288:mIny5DYT5IUDdh2443p3loQkmly9ZsbMqfOmsx1aRf5kNGc9Q:IUT5vJh2Z3LoQkmlH72aR8G8Q

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\4c1d2efdf9d11099695d74ace930897ff357b584cf97e92ccf430e836d291db3.exe
    "C:\Users\Admin\AppData\Local\Temp\4c1d2efdf9d11099695d74ace930897ff357b584cf97e92ccf430e836d291db3.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:4872
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1412
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2160
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1788
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:3756
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:3988
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:5108
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:2452
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:4688
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1660
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:748
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:4976
          • 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:1348
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:4092

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Users\Admin\AppData\Local\Temp\nsrFF27.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d25afbba9b675bdb378933aa3e0135b0

            SHA1

            dc9bdd1181ffc88611a0636a86600e4b956e0d10

            SHA256

            bc9eb653f2e936869d8a329c4721a45fb663be249d4799b8cecd6e3cc8d9ce51

            SHA512

            ce796ca8c45156d036128d14d96476e266a4e56ca3caf5a391bbba2a912fa41bf9883748844c1a688f3475126b033e4e0f2ca2449913354827ae5adcab4668ed

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d25afbba9b675bdb378933aa3e0135b0

            SHA1

            dc9bdd1181ffc88611a0636a86600e4b956e0d10

            SHA256

            bc9eb653f2e936869d8a329c4721a45fb663be249d4799b8cecd6e3cc8d9ce51

            SHA512

            ce796ca8c45156d036128d14d96476e266a4e56ca3caf5a391bbba2a912fa41bf9883748844c1a688f3475126b033e4e0f2ca2449913354827ae5adcab4668ed

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d25afbba9b675bdb378933aa3e0135b0

            SHA1

            dc9bdd1181ffc88611a0636a86600e4b956e0d10

            SHA256

            bc9eb653f2e936869d8a329c4721a45fb663be249d4799b8cecd6e3cc8d9ce51

            SHA512

            ce796ca8c45156d036128d14d96476e266a4e56ca3caf5a391bbba2a912fa41bf9883748844c1a688f3475126b033e4e0f2ca2449913354827ae5adcab4668ed

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            d25afbba9b675bdb378933aa3e0135b0

            SHA1

            dc9bdd1181ffc88611a0636a86600e4b956e0d10

            SHA256

            bc9eb653f2e936869d8a329c4721a45fb663be249d4799b8cecd6e3cc8d9ce51

            SHA512

            ce796ca8c45156d036128d14d96476e266a4e56ca3caf5a391bbba2a912fa41bf9883748844c1a688f3475126b033e4e0f2ca2449913354827ae5adcab4668ed

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36cbf1a85c785211247b1b38b6345231

            SHA1

            7d2e8ee65eb4b20aacf2a5726a8db255a852b835

            SHA256

            b99756a501a751543edea514d4ac19306c7b94e587b7869c51d4940ca0c655a5

            SHA512

            7d3b93fe41adb8870e74a6ba4ab82eeabeb0bb25f104809958f3ce19a3cc36d85961b3003bd440931af68df878dc91018c10102df8f5065dceef3352e64a015c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36cbf1a85c785211247b1b38b6345231

            SHA1

            7d2e8ee65eb4b20aacf2a5726a8db255a852b835

            SHA256

            b99756a501a751543edea514d4ac19306c7b94e587b7869c51d4940ca0c655a5

            SHA512

            7d3b93fe41adb8870e74a6ba4ab82eeabeb0bb25f104809958f3ce19a3cc36d85961b3003bd440931af68df878dc91018c10102df8f5065dceef3352e64a015c

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            36cbf1a85c785211247b1b38b6345231

            SHA1

            7d2e8ee65eb4b20aacf2a5726a8db255a852b835

            SHA256

            b99756a501a751543edea514d4ac19306c7b94e587b7869c51d4940ca0c655a5

            SHA512

            7d3b93fe41adb8870e74a6ba4ab82eeabeb0bb25f104809958f3ce19a3cc36d85961b3003bd440931af68df878dc91018c10102df8f5065dceef3352e64a015c

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4f007224b62586d1462d39e6f41dc403

            SHA1

            484d24d2a33eac2b9317daf2bb5a44de1631153e

            SHA256

            a08285597d669b62a999d91ab73811bfb34b129781c91a5342a30ace20761c9c

            SHA512

            f995d0502e6ac5d8925009ef9d85cd79f175143fa2515e4e14e25500ddaa0b937adacfc639bce188520ff7f9b28f4c71aea705910f3fe1c96049bb4d3b8a39c7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            4f007224b62586d1462d39e6f41dc403

            SHA1

            484d24d2a33eac2b9317daf2bb5a44de1631153e

            SHA256

            a08285597d669b62a999d91ab73811bfb34b129781c91a5342a30ace20761c9c

            SHA512

            f995d0502e6ac5d8925009ef9d85cd79f175143fa2515e4e14e25500ddaa0b937adacfc639bce188520ff7f9b28f4c71aea705910f3fe1c96049bb4d3b8a39c7

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ddf2c35a24e7d43ffc726f0b76b1bdb3

            SHA1

            181904fc82d285eca90125d8e3dd1f5396241f5f

            SHA256

            8b7d16f16007874742b4f908ffa20ec18338fd44179b8b555aa428a126858f90

            SHA512

            a5b3ad8b370087dee91a3c09e28b7b20851606a992dd51a360246486913c16347f661921c708e573ada4fb1e491d36f9f5fab0165aca18440ced9e9403bca461

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ddf2c35a24e7d43ffc726f0b76b1bdb3

            SHA1

            181904fc82d285eca90125d8e3dd1f5396241f5f

            SHA256

            8b7d16f16007874742b4f908ffa20ec18338fd44179b8b555aa428a126858f90

            SHA512

            a5b3ad8b370087dee91a3c09e28b7b20851606a992dd51a360246486913c16347f661921c708e573ada4fb1e491d36f9f5fab0165aca18440ced9e9403bca461

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ddf2c35a24e7d43ffc726f0b76b1bdb3

            SHA1

            181904fc82d285eca90125d8e3dd1f5396241f5f

            SHA256

            8b7d16f16007874742b4f908ffa20ec18338fd44179b8b555aa428a126858f90

            SHA512

            a5b3ad8b370087dee91a3c09e28b7b20851606a992dd51a360246486913c16347f661921c708e573ada4fb1e491d36f9f5fab0165aca18440ced9e9403bca461

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            3f7f2cce5cd1c939c18d5a953905f1c7

            SHA1

            ffb2cdd135e3bb670f5d04d7864d35fcb2813df4

            SHA256

            0060928009341ad3c679b765323f4cb1d12fc760905741ec02d7a4f5aa5c54bc

            SHA512

            142ee7f80e20434d77660df3af5692d41077814b50867eeea8038b8f25c898f7dd48b32f08116f763280fa5df750540532596b5235f9c43919e0baad2efc7320

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            3f7f2cce5cd1c939c18d5a953905f1c7

            SHA1

            ffb2cdd135e3bb670f5d04d7864d35fcb2813df4

            SHA256

            0060928009341ad3c679b765323f4cb1d12fc760905741ec02d7a4f5aa5c54bc

            SHA512

            142ee7f80e20434d77660df3af5692d41077814b50867eeea8038b8f25c898f7dd48b32f08116f763280fa5df750540532596b5235f9c43919e0baad2efc7320

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            3f7f2cce5cd1c939c18d5a953905f1c7

            SHA1

            ffb2cdd135e3bb670f5d04d7864d35fcb2813df4

            SHA256

            0060928009341ad3c679b765323f4cb1d12fc760905741ec02d7a4f5aa5c54bc

            SHA512

            142ee7f80e20434d77660df3af5692d41077814b50867eeea8038b8f25c898f7dd48b32f08116f763280fa5df750540532596b5235f9c43919e0baad2efc7320

          • memory/748-165-0x0000000000000000-mapping.dmp

          • memory/1412-136-0x0000000000000000-mapping.dmp

          • memory/1660-159-0x0000000000000000-mapping.dmp

          • memory/1788-140-0x0000000000000000-mapping.dmp

          • memory/2160-137-0x0000000000000000-mapping.dmp

          • memory/2452-153-0x0000000000000000-mapping.dmp

          • memory/3756-141-0x0000000000000000-mapping.dmp

          • memory/3988-142-0x0000000000000000-mapping.dmp

          • memory/4688-158-0x0000000000000000-mapping.dmp

          • memory/4872-133-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4872-168-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/4976-166-0x0000000000000000-mapping.dmp

          • memory/5108-147-0x0000000000000000-mapping.dmp