Analysis

  • max time kernel
    47s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:17

General

  • Target

    9fe7f39f3881413b09c26f1e8f5d91d9072071b9d07d5cd38d7ade585e474662.exe

  • Size

    603KB

  • MD5

    c83e8b14df09343c11a4db38989c1843

  • SHA1

    a9bb8859af1c14b13f65e15df4be89d370751c5b

  • SHA256

    9fe7f39f3881413b09c26f1e8f5d91d9072071b9d07d5cd38d7ade585e474662

  • SHA512

    8995c836ff3d430403aa49cd7f1d030796aa8d8fae6eff1a395d5afbd8332b01b92d9aeab4292367e72f161dce291828ac87810c5b0350135fed63e885212de5

  • SSDEEP

    12288:tIny5DYTfI0H4kUQMpI5TWq11raiKBf6ReIC5:5UTfbH4kjMpITbza/9SC

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\9fe7f39f3881413b09c26f1e8f5d91d9072071b9d07d5cd38d7ade585e474662.exe
    "C:\Users\Admin\AppData\Local\Temp\9fe7f39f3881413b09c26f1e8f5d91d9072071b9d07d5cd38d7ade585e474662.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:1564
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:900
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:524
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1280
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:676
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:332
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1916
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:688
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:2008
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1732
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:784
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1956
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1272
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:988

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e463fadaf3799f58935720b471f86d6b

            SHA1

            a664284c8822672e77fbe93585e1394902eccd54

            SHA256

            a2862d195912e702c25d34a2d99b8ae8742c30d6774dc835a0d26f46b6591e3d

            SHA512

            e2526a783b40ed763ff3fcaccd9f1fed8157a29e1e6c5d770669a8a6e21e88175f4bfbe45c1e004c27d04e23193d9ae55e7fad849e7e95c8e4e6eef8185bf4b6

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            04c0321806d7c38330ddbbfc6f354534

            SHA1

            18ccba7873eb144618e29bba8e181451e36019cb

            SHA256

            d7e91aaf24d0009e8c1a77de811bdf39a5035ed412332f3bb4190d2436019f17

            SHA512

            cd44442772cfb273a036ef5d4d5687bc240a771115485a6fe30115614cc9e0cdfd61d96b8f0cc6c7444aae1872cd8cbc5786a3ed1bcc7c77434116e9559b2fea

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bf4df27d6ab726b5e2c9834d8d1a038f

            SHA1

            cea3d77cbc96157a6be4c02ddd460a003f5618fd

            SHA256

            76c0c627068917f885d9856e75b00b9842f32a31c90ee8e38644ca65660c390e

            SHA512

            cf5257663698c01d4483d4162037949a3a3e969dfdd7926591ce553c60462f8fad6db4934bdb2398019c1d8168e8d33e9793918d9a3dd2ac854f04e3cbff7fc3

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d35c76fa1645b0270cad5520e2ca54e9

            SHA1

            010e1daaea7424431bb2d0595be603df3ec8aad7

            SHA256

            5c7052560480732f43cb10380b07717b46969d80f5ef3471ef64406f9524ec2e

            SHA512

            49cc8d4920ee5069fc78240258eed15ec03b60b4c408be1af4e8ed8470106bf8e5bd871e4141814c75b223a65653340499d787a50e9a8f85cb1c78119f3d9f29

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d35c76fa1645b0270cad5520e2ca54e9

            SHA1

            010e1daaea7424431bb2d0595be603df3ec8aad7

            SHA256

            5c7052560480732f43cb10380b07717b46969d80f5ef3471ef64406f9524ec2e

            SHA512

            49cc8d4920ee5069fc78240258eed15ec03b60b4c408be1af4e8ed8470106bf8e5bd871e4141814c75b223a65653340499d787a50e9a8f85cb1c78119f3d9f29

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            af52ddf57abdb591c256540a55ca087a

            SHA1

            56d463304943f3d53c36931770279f5f6b90c1a7

            SHA256

            95bb3dc1576c29ca590a8f9fd199154cf3bf8f6113b6096db904355ad6127655

            SHA512

            ecf6c1bcfacff605d048c8f5439e927aa946880b6cd571270696cc50a4426f94bec62aff354f880d5f54de0e78884b6c58a0b2bbf5d8eb52b488e4efa5056aff

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            af52ddf57abdb591c256540a55ca087a

            SHA1

            56d463304943f3d53c36931770279f5f6b90c1a7

            SHA256

            95bb3dc1576c29ca590a8f9fd199154cf3bf8f6113b6096db904355ad6127655

            SHA512

            ecf6c1bcfacff605d048c8f5439e927aa946880b6cd571270696cc50a4426f94bec62aff354f880d5f54de0e78884b6c58a0b2bbf5d8eb52b488e4efa5056aff

          • \Users\Admin\AppData\Local\Temp\nsj322B.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj322B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj322B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj322B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj322B.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e463fadaf3799f58935720b471f86d6b

            SHA1

            a664284c8822672e77fbe93585e1394902eccd54

            SHA256

            a2862d195912e702c25d34a2d99b8ae8742c30d6774dc835a0d26f46b6591e3d

            SHA512

            e2526a783b40ed763ff3fcaccd9f1fed8157a29e1e6c5d770669a8a6e21e88175f4bfbe45c1e004c27d04e23193d9ae55e7fad849e7e95c8e4e6eef8185bf4b6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e463fadaf3799f58935720b471f86d6b

            SHA1

            a664284c8822672e77fbe93585e1394902eccd54

            SHA256

            a2862d195912e702c25d34a2d99b8ae8742c30d6774dc835a0d26f46b6591e3d

            SHA512

            e2526a783b40ed763ff3fcaccd9f1fed8157a29e1e6c5d770669a8a6e21e88175f4bfbe45c1e004c27d04e23193d9ae55e7fad849e7e95c8e4e6eef8185bf4b6

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            e463fadaf3799f58935720b471f86d6b

            SHA1

            a664284c8822672e77fbe93585e1394902eccd54

            SHA256

            a2862d195912e702c25d34a2d99b8ae8742c30d6774dc835a0d26f46b6591e3d

            SHA512

            e2526a783b40ed763ff3fcaccd9f1fed8157a29e1e6c5d770669a8a6e21e88175f4bfbe45c1e004c27d04e23193d9ae55e7fad849e7e95c8e4e6eef8185bf4b6

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            04c0321806d7c38330ddbbfc6f354534

            SHA1

            18ccba7873eb144618e29bba8e181451e36019cb

            SHA256

            d7e91aaf24d0009e8c1a77de811bdf39a5035ed412332f3bb4190d2436019f17

            SHA512

            cd44442772cfb273a036ef5d4d5687bc240a771115485a6fe30115614cc9e0cdfd61d96b8f0cc6c7444aae1872cd8cbc5786a3ed1bcc7c77434116e9559b2fea

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            04c0321806d7c38330ddbbfc6f354534

            SHA1

            18ccba7873eb144618e29bba8e181451e36019cb

            SHA256

            d7e91aaf24d0009e8c1a77de811bdf39a5035ed412332f3bb4190d2436019f17

            SHA512

            cd44442772cfb273a036ef5d4d5687bc240a771115485a6fe30115614cc9e0cdfd61d96b8f0cc6c7444aae1872cd8cbc5786a3ed1bcc7c77434116e9559b2fea

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            bf4df27d6ab726b5e2c9834d8d1a038f

            SHA1

            cea3d77cbc96157a6be4c02ddd460a003f5618fd

            SHA256

            76c0c627068917f885d9856e75b00b9842f32a31c90ee8e38644ca65660c390e

            SHA512

            cf5257663698c01d4483d4162037949a3a3e969dfdd7926591ce553c60462f8fad6db4934bdb2398019c1d8168e8d33e9793918d9a3dd2ac854f04e3cbff7fc3

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            d35c76fa1645b0270cad5520e2ca54e9

            SHA1

            010e1daaea7424431bb2d0595be603df3ec8aad7

            SHA256

            5c7052560480732f43cb10380b07717b46969d80f5ef3471ef64406f9524ec2e

            SHA512

            49cc8d4920ee5069fc78240258eed15ec03b60b4c408be1af4e8ed8470106bf8e5bd871e4141814c75b223a65653340499d787a50e9a8f85cb1c78119f3d9f29

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            af52ddf57abdb591c256540a55ca087a

            SHA1

            56d463304943f3d53c36931770279f5f6b90c1a7

            SHA256

            95bb3dc1576c29ca590a8f9fd199154cf3bf8f6113b6096db904355ad6127655

            SHA512

            ecf6c1bcfacff605d048c8f5439e927aa946880b6cd571270696cc50a4426f94bec62aff354f880d5f54de0e78884b6c58a0b2bbf5d8eb52b488e4efa5056aff

          • memory/332-64-0x0000000000000000-mapping.dmp

          • memory/524-58-0x0000000000000000-mapping.dmp

          • memory/676-62-0x0000000000000000-mapping.dmp

          • memory/688-76-0x0000000000000000-mapping.dmp

          • memory/784-86-0x0000000000000000-mapping.dmp

          • memory/900-57-0x0000000000000000-mapping.dmp

          • memory/1280-61-0x0000000000000000-mapping.dmp

          • memory/1564-54-0x0000000075681000-0x0000000075683000-memory.dmp

            Filesize

            8KB

          • memory/1564-59-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1564-90-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1732-81-0x0000000000000000-mapping.dmp

          • memory/1916-70-0x0000000000000000-mapping.dmp

          • memory/1956-87-0x0000000000000000-mapping.dmp

          • memory/2008-80-0x0000000000000000-mapping.dmp