Analysis

  • max time kernel
    58s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:27

General

  • Target

    42faf8bec0b518ec3cb196d52ad897c7e8549cf6e0b653832d53e7a484223e93.exe

  • Size

    602KB

  • MD5

    ed81568bf8baeac764b00078ba7907e8

  • SHA1

    c59298477adf0366ba86b23aabc2db4375ca3b16

  • SHA256

    42faf8bec0b518ec3cb196d52ad897c7e8549cf6e0b653832d53e7a484223e93

  • SHA512

    2732030c66628b6ec543e2f0931092f7eccc50399f4f007748af02ee36085151cb8e8e3d4ff515f3b8ea05228756061d08bb1e08f5542ddeb70e6c8deac97147

  • SSDEEP

    12288:aIny5DYTgPfwJxavkppm3kM93uWcZDJmF2+tueTJucB8JR4jkz:8UTg3wkkpokUUdJx+tueTJuc+bukz

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\42faf8bec0b518ec3cb196d52ad897c7e8549cf6e0b653832d53e7a484223e93.exe
    "C:\Users\Admin\AppData\Local\Temp\42faf8bec0b518ec3cb196d52ad897c7e8549cf6e0b653832d53e7a484223e93.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:2008
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1000
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1048
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:520
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1496
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1144
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1548
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:612
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1532
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:112
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1340
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1652
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1868
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:1716

          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

            13cf4a5734e24cab4d103073b2ce1ed4

            SHA1

            8c3f4504ab5debd5f27c043de53ec774cbd76698

            SHA256

            382d1c9368cc33ca22b70dabfddbdae9c956da2d900930c0daac77f78b0a0dab

            SHA512

            e054be13c41638ebf647304d1bff564e04cc0e6833b1cda18c4be5aecd119216b894032565abb96c89e91cb28737ce2020b4dbdf8bb8828e10aebea13a211c38

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

            241KB

            MD5

            adf0f80e30230aa37dc1dcbfa987e3e6

            SHA1

            1b0258881409b23142c817842af5d867c92fa43a

            SHA256

            c6d66925fe5137efda820f92b8b5a69110814304406306474f793b72c5fcfbe2

            SHA512

            1a361bffa6a25e0e8dab2a0b9526b351aeb368695d2ab8475986827d1233c871d1e628e5ef0b06e725d60bda11e222c71b5d8d2ad954feca79c7fb832e864513

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

            108KB

            MD5

            6f9f05ce8ec07ab4397fe9b63741c460

            SHA1

            7cf973eaf80b50de44653f0f57529c53fd163163

            SHA256

            a927f733a440ef52a0ff8139046a6eae20d18ad22adfede0102bd0e1fb9f6933

            SHA512

            c879397ad764b3236e0fc77e8e9e5874553db72a7bc9660fb03a01d5c880f129b773a301ba54acf93b8cac1af85e1774cb35c1f4d6190a2031363ea5685c0eb4

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

            176KB

            MD5

            b53db3f737db84ac54c76df0e2701a74

            SHA1

            eb92355bfa1b53f6354cc68751c232ca9e209fa2

            SHA256

            fda1bf205e744aef37b69badf103e962d7bf27bd66720f245b9a3ca7a3e2866a

            SHA512

            b9a60a8cc43958ea34b25b212f1b3f2786ed63c5addc904e76cb592b906ec6be770c4a0d929a0c62fb5211f60384738f38ef031ffdb193ada61383300c182acf

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

            176KB

            MD5

            b53db3f737db84ac54c76df0e2701a74

            SHA1

            eb92355bfa1b53f6354cc68751c232ca9e209fa2

            SHA256

            fda1bf205e744aef37b69badf103e962d7bf27bd66720f245b9a3ca7a3e2866a

            SHA512

            b9a60a8cc43958ea34b25b212f1b3f2786ed63c5addc904e76cb592b906ec6be770c4a0d929a0c62fb5211f60384738f38ef031ffdb193ada61383300c182acf

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

            158KB

            MD5

            8db04c9092bc869deba418a01aaed10e

            SHA1

            8ab706852b461beceff248d04b5cd8468369de4b

            SHA256

            0e7d311b015fc088b90371f0009fe5e6349902f0723ef4088b97f505687a31f0

            SHA512

            c259d475b1b5a1d6bfb1d3ba08e69fd7b0c8b303c97355606cc7678c44948dc529a6568a366be1377a30c17f5bd557c338aa5bdbcfeeb5e69d11e0ad9b3e008d

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

            158KB

            MD5

            8db04c9092bc869deba418a01aaed10e

            SHA1

            8ab706852b461beceff248d04b5cd8468369de4b

            SHA256

            0e7d311b015fc088b90371f0009fe5e6349902f0723ef4088b97f505687a31f0

            SHA512

            c259d475b1b5a1d6bfb1d3ba08e69fd7b0c8b303c97355606cc7678c44948dc529a6568a366be1377a30c17f5bd557c338aa5bdbcfeeb5e69d11e0ad9b3e008d

          • \Users\Admin\AppData\Local\Temp\nsoEEE4.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsoEEE4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoEEE4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoEEE4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsoEEE4.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            13cf4a5734e24cab4d103073b2ce1ed4

            SHA1

            8c3f4504ab5debd5f27c043de53ec774cbd76698

            SHA256

            382d1c9368cc33ca22b70dabfddbdae9c956da2d900930c0daac77f78b0a0dab

            SHA512

            e054be13c41638ebf647304d1bff564e04cc0e6833b1cda18c4be5aecd119216b894032565abb96c89e91cb28737ce2020b4dbdf8bb8828e10aebea13a211c38

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            13cf4a5734e24cab4d103073b2ce1ed4

            SHA1

            8c3f4504ab5debd5f27c043de53ec774cbd76698

            SHA256

            382d1c9368cc33ca22b70dabfddbdae9c956da2d900930c0daac77f78b0a0dab

            SHA512

            e054be13c41638ebf647304d1bff564e04cc0e6833b1cda18c4be5aecd119216b894032565abb96c89e91cb28737ce2020b4dbdf8bb8828e10aebea13a211c38

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            13cf4a5734e24cab4d103073b2ce1ed4

            SHA1

            8c3f4504ab5debd5f27c043de53ec774cbd76698

            SHA256

            382d1c9368cc33ca22b70dabfddbdae9c956da2d900930c0daac77f78b0a0dab

            SHA512

            e054be13c41638ebf647304d1bff564e04cc0e6833b1cda18c4be5aecd119216b894032565abb96c89e91cb28737ce2020b4dbdf8bb8828e10aebea13a211c38

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            adf0f80e30230aa37dc1dcbfa987e3e6

            SHA1

            1b0258881409b23142c817842af5d867c92fa43a

            SHA256

            c6d66925fe5137efda820f92b8b5a69110814304406306474f793b72c5fcfbe2

            SHA512

            1a361bffa6a25e0e8dab2a0b9526b351aeb368695d2ab8475986827d1233c871d1e628e5ef0b06e725d60bda11e222c71b5d8d2ad954feca79c7fb832e864513

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            241KB

            MD5

            adf0f80e30230aa37dc1dcbfa987e3e6

            SHA1

            1b0258881409b23142c817842af5d867c92fa43a

            SHA256

            c6d66925fe5137efda820f92b8b5a69110814304406306474f793b72c5fcfbe2

            SHA512

            1a361bffa6a25e0e8dab2a0b9526b351aeb368695d2ab8475986827d1233c871d1e628e5ef0b06e725d60bda11e222c71b5d8d2ad954feca79c7fb832e864513

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            6f9f05ce8ec07ab4397fe9b63741c460

            SHA1

            7cf973eaf80b50de44653f0f57529c53fd163163

            SHA256

            a927f733a440ef52a0ff8139046a6eae20d18ad22adfede0102bd0e1fb9f6933

            SHA512

            c879397ad764b3236e0fc77e8e9e5874553db72a7bc9660fb03a01d5c880f129b773a301ba54acf93b8cac1af85e1774cb35c1f4d6190a2031363ea5685c0eb4

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            b53db3f737db84ac54c76df0e2701a74

            SHA1

            eb92355bfa1b53f6354cc68751c232ca9e209fa2

            SHA256

            fda1bf205e744aef37b69badf103e962d7bf27bd66720f245b9a3ca7a3e2866a

            SHA512

            b9a60a8cc43958ea34b25b212f1b3f2786ed63c5addc904e76cb592b906ec6be770c4a0d929a0c62fb5211f60384738f38ef031ffdb193ada61383300c182acf

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            8db04c9092bc869deba418a01aaed10e

            SHA1

            8ab706852b461beceff248d04b5cd8468369de4b

            SHA256

            0e7d311b015fc088b90371f0009fe5e6349902f0723ef4088b97f505687a31f0

            SHA512

            c259d475b1b5a1d6bfb1d3ba08e69fd7b0c8b303c97355606cc7678c44948dc529a6568a366be1377a30c17f5bd557c338aa5bdbcfeeb5e69d11e0ad9b3e008d

          • memory/112-81-0x0000000000000000-mapping.dmp
          • memory/520-61-0x0000000000000000-mapping.dmp
          • memory/612-76-0x0000000000000000-mapping.dmp
          • memory/1000-57-0x0000000000000000-mapping.dmp
          • memory/1048-58-0x0000000000000000-mapping.dmp
          • memory/1144-64-0x0000000000000000-mapping.dmp
          • memory/1340-86-0x0000000000000000-mapping.dmp
          • memory/1496-62-0x0000000000000000-mapping.dmp
          • memory/1532-80-0x0000000000000000-mapping.dmp
          • memory/1548-70-0x0000000000000000-mapping.dmp
          • memory/1652-87-0x0000000000000000-mapping.dmp
          • memory/2008-54-0x0000000075B11000-0x0000000075B13000-memory.dmp
            Filesize

            8KB

          • memory/2008-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/2008-90-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB