Analysis

  • max time kernel
    45s
  • max time network
    30s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:53

General

  • Target

    a10bb5d235d766376b81b289df900dc87c7aae19fe4716eca94a42c1a942fc45.exe

  • Size

    445KB

  • MD5

    3fddb710507281b1cc392e931012ede0

  • SHA1

    3843e4f6235981b8e81b0117c7f7218d4eb4aa4d

  • SHA256

    a10bb5d235d766376b81b289df900dc87c7aae19fe4716eca94a42c1a942fc45

  • SHA512

    8d7157ed9066e84b70dbb6082a47d24263dfa4f72123fd0e6e2aeec9bddbb7de9f6ae8ac3548c06a86d046a80b409da428f686efba67a937f697213e0304c084

  • SSDEEP

    12288:y3WP+khsIEfrUvfSm52cTv2LESekPpgaMQxWyoJZ:yikIcS6m5FvU7eTo4T

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\a10bb5d235d766376b81b289df900dc87c7aae19fe4716eca94a42c1a942fc45.exe
    "C:\Users\Admin\AppData\Local\Temp\a10bb5d235d766376b81b289df900dc87c7aae19fe4716eca94a42c1a942fc45.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:936
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:868
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:744
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1068
        • 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:560
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:748
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1776
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1036
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:384
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1732
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1356
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:616
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1764

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            69071cafffaa248cac0a95cd847a37aa

            SHA1

            ada548cac0cc6d2cc8f69c1c9a060de908c9867c

            SHA256

            60406e0e5892169a8407d94ca27e09684c13c0cdb1751ea369f65e27bd674be7

            SHA512

            ae7f2de6f9b8f657ce814245d3c398fb19765dd778b1f83d9a812c8c0e62431d8de92d87c6b75a4a0c7469af783623348d68321c810f722951f311d77d33612a

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5f4cb2b357d46b7d792b8d8e26bcd71e

            SHA1

            a3c74a767b7a2456832d24741e96e5e67c7730c3

            SHA256

            d91e6c879fd9e50d37e1ac6cacea6ad653b8fd86586e701bf5944a54821af4b6

            SHA512

            5bfb67446de56818a0834badf9a9ba6b21fae3e8951fc63e931abec9d9cca8e72b4c9e11f52ba1ef8d29f49a185901bd9cb2dc53a873e59978c27fc99274bbea

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7889011548eadf158625a4093dfb8b9f

            SHA1

            4524f3e2b3c87914a163c788ded1f05928440ba1

            SHA256

            0693eb4187f7e0fe7d93e3f4e0e8e99e312085636a4bc45e2e54161061e10425

            SHA512

            f3e2b3abcaa021d313776041317e606b2467e2a9c9c0999485b8bbdae6ebd8df28dad604e22e8cfa5df376cd6a2f1e8e21cdb9ca0362101b8f0290d1eb9292ba

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5d02c4f60c984a3e5d9ebb76938ed1d0

            SHA1

            3ff910754478cae4747cd758a012692b3d804289

            SHA256

            a7cf35d17d21875f58579e88b5a6ec0e994f07e3e9e7f899bd2418c55b5f3a3c

            SHA512

            79653e87d3703b862b87d251ee619a9151a5a75677c48824253ca69d117f7759bd196db3a8e320f368f4d30c3a563cf3e8757b235036119bd198230a6c6e407c

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5d02c4f60c984a3e5d9ebb76938ed1d0

            SHA1

            3ff910754478cae4747cd758a012692b3d804289

            SHA256

            a7cf35d17d21875f58579e88b5a6ec0e994f07e3e9e7f899bd2418c55b5f3a3c

            SHA512

            79653e87d3703b862b87d251ee619a9151a5a75677c48824253ca69d117f7759bd196db3a8e320f368f4d30c3a563cf3e8757b235036119bd198230a6c6e407c

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            baadfc4ac4aaefc7fc4b8761f6e92e4c

            SHA1

            2e3d561ced13351ce46766b543d6b51d45ce51dc

            SHA256

            ca0dc5ed993780867885750719401c56309686721b142c9cb9973601ed6bd04a

            SHA512

            9960c90e039becef6de7a974d003269eea1ffc85b7ad8c73c3a056e693277edc0fe5e94ca165823062319add6e302ab9b0cc7690b869babafaf4892b2c761170

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            baadfc4ac4aaefc7fc4b8761f6e92e4c

            SHA1

            2e3d561ced13351ce46766b543d6b51d45ce51dc

            SHA256

            ca0dc5ed993780867885750719401c56309686721b142c9cb9973601ed6bd04a

            SHA512

            9960c90e039becef6de7a974d003269eea1ffc85b7ad8c73c3a056e693277edc0fe5e94ca165823062319add6e302ab9b0cc7690b869babafaf4892b2c761170

          • \Users\Admin\AppData\Local\Temp\nsoC9B8.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoC9B8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC9B8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC9B8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoC9B8.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            69071cafffaa248cac0a95cd847a37aa

            SHA1

            ada548cac0cc6d2cc8f69c1c9a060de908c9867c

            SHA256

            60406e0e5892169a8407d94ca27e09684c13c0cdb1751ea369f65e27bd674be7

            SHA512

            ae7f2de6f9b8f657ce814245d3c398fb19765dd778b1f83d9a812c8c0e62431d8de92d87c6b75a4a0c7469af783623348d68321c810f722951f311d77d33612a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            69071cafffaa248cac0a95cd847a37aa

            SHA1

            ada548cac0cc6d2cc8f69c1c9a060de908c9867c

            SHA256

            60406e0e5892169a8407d94ca27e09684c13c0cdb1751ea369f65e27bd674be7

            SHA512

            ae7f2de6f9b8f657ce814245d3c398fb19765dd778b1f83d9a812c8c0e62431d8de92d87c6b75a4a0c7469af783623348d68321c810f722951f311d77d33612a

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            69071cafffaa248cac0a95cd847a37aa

            SHA1

            ada548cac0cc6d2cc8f69c1c9a060de908c9867c

            SHA256

            60406e0e5892169a8407d94ca27e09684c13c0cdb1751ea369f65e27bd674be7

            SHA512

            ae7f2de6f9b8f657ce814245d3c398fb19765dd778b1f83d9a812c8c0e62431d8de92d87c6b75a4a0c7469af783623348d68321c810f722951f311d77d33612a

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5f4cb2b357d46b7d792b8d8e26bcd71e

            SHA1

            a3c74a767b7a2456832d24741e96e5e67c7730c3

            SHA256

            d91e6c879fd9e50d37e1ac6cacea6ad653b8fd86586e701bf5944a54821af4b6

            SHA512

            5bfb67446de56818a0834badf9a9ba6b21fae3e8951fc63e931abec9d9cca8e72b4c9e11f52ba1ef8d29f49a185901bd9cb2dc53a873e59978c27fc99274bbea

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            5f4cb2b357d46b7d792b8d8e26bcd71e

            SHA1

            a3c74a767b7a2456832d24741e96e5e67c7730c3

            SHA256

            d91e6c879fd9e50d37e1ac6cacea6ad653b8fd86586e701bf5944a54821af4b6

            SHA512

            5bfb67446de56818a0834badf9a9ba6b21fae3e8951fc63e931abec9d9cca8e72b4c9e11f52ba1ef8d29f49a185901bd9cb2dc53a873e59978c27fc99274bbea

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            7889011548eadf158625a4093dfb8b9f

            SHA1

            4524f3e2b3c87914a163c788ded1f05928440ba1

            SHA256

            0693eb4187f7e0fe7d93e3f4e0e8e99e312085636a4bc45e2e54161061e10425

            SHA512

            f3e2b3abcaa021d313776041317e606b2467e2a9c9c0999485b8bbdae6ebd8df28dad604e22e8cfa5df376cd6a2f1e8e21cdb9ca0362101b8f0290d1eb9292ba

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            5d02c4f60c984a3e5d9ebb76938ed1d0

            SHA1

            3ff910754478cae4747cd758a012692b3d804289

            SHA256

            a7cf35d17d21875f58579e88b5a6ec0e994f07e3e9e7f899bd2418c55b5f3a3c

            SHA512

            79653e87d3703b862b87d251ee619a9151a5a75677c48824253ca69d117f7759bd196db3a8e320f368f4d30c3a563cf3e8757b235036119bd198230a6c6e407c

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            baadfc4ac4aaefc7fc4b8761f6e92e4c

            SHA1

            2e3d561ced13351ce46766b543d6b51d45ce51dc

            SHA256

            ca0dc5ed993780867885750719401c56309686721b142c9cb9973601ed6bd04a

            SHA512

            9960c90e039becef6de7a974d003269eea1ffc85b7ad8c73c3a056e693277edc0fe5e94ca165823062319add6e302ab9b0cc7690b869babafaf4892b2c761170

          • memory/384-80-0x0000000000000000-mapping.dmp

          • memory/468-61-0x0000000000000000-mapping.dmp

          • memory/560-63-0x0000000000000000-mapping.dmp

          • memory/744-58-0x0000000000000000-mapping.dmp

          • memory/748-69-0x0000000000000000-mapping.dmp

          • memory/868-57-0x0000000000000000-mapping.dmp

          • memory/936-54-0x0000000076941000-0x0000000076943000-memory.dmp

            Filesize

            8KB

          • memory/1036-79-0x0000000000000000-mapping.dmp

          • memory/1068-60-0x0000000000000000-mapping.dmp

          • memory/1356-86-0x0000000000000000-mapping.dmp

          • memory/1732-85-0x0000000000000000-mapping.dmp

          • memory/1776-75-0x0000000000000000-mapping.dmp