Analysis

  • max time kernel
    43s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    22/11/2022, 00:28

General

  • Target

    aa4c8acc081cecc7a66a93af36a72837f6d52818589b948c6b3cd655cd946287.exe

  • Size

    446KB

  • MD5

    67f10882aa675e4edc0869900190e687

  • SHA1

    6593d26153482da2d5ee2831c6283e4132c78d86

  • SHA256

    aa4c8acc081cecc7a66a93af36a72837f6d52818589b948c6b3cd655cd946287

  • SHA512

    418308de280697be40790e72c35a829c390b93056c868765c3faf2b024f253df43bff48553800138c0d83ce2c9dd2cef84f1a07420626e52274b9a33441ab56b

  • SSDEEP

    12288:dMpk1GkBKHHQ7CHJjLv++EZNm78C4pmIi2m0EsDy:d3YgKHHQ6JfIo78Tni2m0EsW

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\aa4c8acc081cecc7a66a93af36a72837f6d52818589b948c6b3cd655cd946287.exe
    "C:\Users\Admin\AppData\Local\Temp\aa4c8acc081cecc7a66a93af36a72837f6d52818589b948c6b3cd655cd946287.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:1088
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:848
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1388
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1900
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1376
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1192
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1756
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1552
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1428
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1964
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:876
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1300
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1968
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:764

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1160b90baab892bf9e7f4823114e7ed3

            SHA1

            463214beebf89f225997010ad4a2f2a180d575c1

            SHA256

            93bc2e02ce66d7764256fec0558addd7331ce35f0009cbc46e79ba14f58b1856

            SHA512

            a196bfbb63a8f14c643b83c90c31c9ecb302d8e194752ab48209bc92325ea6ccc344c7505622fc1eaab2ac6923b1269f1799281d04db635a59f762d712a89794

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            7193df5c38f9b829094cc6547929c489

            SHA1

            46d3fcbb14a07986c0624db393391cdd730c17da

            SHA256

            8109b60c96a0adfa663bb01722707e96d0db9f2f19aa30122fc68534993d769e

            SHA512

            a80d595bb1c5c63e641ad9f7813bb6bcd817858c2cd912b6f8575dbbe3b5a6c622bd847a69fddc3d3f71d93f4bfc65f7bc707d3e4e79c067834e869b209a8a92

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            02d5d35f0c39f31839376234b07aab6b

            SHA1

            bb8bb9e4cfa38eb4ed3acee780209da7bcdbf85a

            SHA256

            6d8b3ca5b65c62ef9c20884bf5700a0097f0f9253e323fb14bee7767f5260297

            SHA512

            233f7eee2c10026741e653dc5522300f500ec2682b437e7ab28f6b870b7ef91e4d680e47cb6747603213e7ec64b8e936b99ff57b30670e263071101a5c3fcae4

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ceb204423f02fd9b17db4b55bd66c898

            SHA1

            35ea09e8cf8e83652132d51dd43d1b98402c3f9c

            SHA256

            bd57b409b1bc159850e4d9a9af2384caf87f53d6b02dffed7f0172625e19e077

            SHA512

            b14f7f48713a56d98604149f1e505189a70821ddb8c2c2864368236168646657a0f7b8111cb5ee90424303f55eea6d4e8b3035e0c055d32d24d20310a2fbb374

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ceb204423f02fd9b17db4b55bd66c898

            SHA1

            35ea09e8cf8e83652132d51dd43d1b98402c3f9c

            SHA256

            bd57b409b1bc159850e4d9a9af2384caf87f53d6b02dffed7f0172625e19e077

            SHA512

            b14f7f48713a56d98604149f1e505189a70821ddb8c2c2864368236168646657a0f7b8111cb5ee90424303f55eea6d4e8b3035e0c055d32d24d20310a2fbb374

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            710fe54ec104f6ec3bf09a782a111686

            SHA1

            cd45a0fb6aca64def6afdac07ed3dfe92f03b928

            SHA256

            684bad5cd2ca906a9781f38adca5bb5ea41e2cf53c81a3642ab7fad2ea004d7c

            SHA512

            3be3f423f403cc1706d71be62071282aea6321a62996594e32081aa842406595255b783276df8de74fa721d33a218531d621ae5ababcb2085d2deada6e8ee638

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            710fe54ec104f6ec3bf09a782a111686

            SHA1

            cd45a0fb6aca64def6afdac07ed3dfe92f03b928

            SHA256

            684bad5cd2ca906a9781f38adca5bb5ea41e2cf53c81a3642ab7fad2ea004d7c

            SHA512

            3be3f423f403cc1706d71be62071282aea6321a62996594e32081aa842406595255b783276df8de74fa721d33a218531d621ae5ababcb2085d2deada6e8ee638

          • \Users\Admin\AppData\Local\Temp\nsiA8E.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsiA8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiA8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiA8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsiA8E.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1160b90baab892bf9e7f4823114e7ed3

            SHA1

            463214beebf89f225997010ad4a2f2a180d575c1

            SHA256

            93bc2e02ce66d7764256fec0558addd7331ce35f0009cbc46e79ba14f58b1856

            SHA512

            a196bfbb63a8f14c643b83c90c31c9ecb302d8e194752ab48209bc92325ea6ccc344c7505622fc1eaab2ac6923b1269f1799281d04db635a59f762d712a89794

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1160b90baab892bf9e7f4823114e7ed3

            SHA1

            463214beebf89f225997010ad4a2f2a180d575c1

            SHA256

            93bc2e02ce66d7764256fec0558addd7331ce35f0009cbc46e79ba14f58b1856

            SHA512

            a196bfbb63a8f14c643b83c90c31c9ecb302d8e194752ab48209bc92325ea6ccc344c7505622fc1eaab2ac6923b1269f1799281d04db635a59f762d712a89794

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            1160b90baab892bf9e7f4823114e7ed3

            SHA1

            463214beebf89f225997010ad4a2f2a180d575c1

            SHA256

            93bc2e02ce66d7764256fec0558addd7331ce35f0009cbc46e79ba14f58b1856

            SHA512

            a196bfbb63a8f14c643b83c90c31c9ecb302d8e194752ab48209bc92325ea6ccc344c7505622fc1eaab2ac6923b1269f1799281d04db635a59f762d712a89794

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            7193df5c38f9b829094cc6547929c489

            SHA1

            46d3fcbb14a07986c0624db393391cdd730c17da

            SHA256

            8109b60c96a0adfa663bb01722707e96d0db9f2f19aa30122fc68534993d769e

            SHA512

            a80d595bb1c5c63e641ad9f7813bb6bcd817858c2cd912b6f8575dbbe3b5a6c622bd847a69fddc3d3f71d93f4bfc65f7bc707d3e4e79c067834e869b209a8a92

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            241KB

            MD5

            7193df5c38f9b829094cc6547929c489

            SHA1

            46d3fcbb14a07986c0624db393391cdd730c17da

            SHA256

            8109b60c96a0adfa663bb01722707e96d0db9f2f19aa30122fc68534993d769e

            SHA512

            a80d595bb1c5c63e641ad9f7813bb6bcd817858c2cd912b6f8575dbbe3b5a6c622bd847a69fddc3d3f71d93f4bfc65f7bc707d3e4e79c067834e869b209a8a92

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            02d5d35f0c39f31839376234b07aab6b

            SHA1

            bb8bb9e4cfa38eb4ed3acee780209da7bcdbf85a

            SHA256

            6d8b3ca5b65c62ef9c20884bf5700a0097f0f9253e323fb14bee7767f5260297

            SHA512

            233f7eee2c10026741e653dc5522300f500ec2682b437e7ab28f6b870b7ef91e4d680e47cb6747603213e7ec64b8e936b99ff57b30670e263071101a5c3fcae4

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            ceb204423f02fd9b17db4b55bd66c898

            SHA1

            35ea09e8cf8e83652132d51dd43d1b98402c3f9c

            SHA256

            bd57b409b1bc159850e4d9a9af2384caf87f53d6b02dffed7f0172625e19e077

            SHA512

            b14f7f48713a56d98604149f1e505189a70821ddb8c2c2864368236168646657a0f7b8111cb5ee90424303f55eea6d4e8b3035e0c055d32d24d20310a2fbb374

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            158KB

            MD5

            710fe54ec104f6ec3bf09a782a111686

            SHA1

            cd45a0fb6aca64def6afdac07ed3dfe92f03b928

            SHA256

            684bad5cd2ca906a9781f38adca5bb5ea41e2cf53c81a3642ab7fad2ea004d7c

            SHA512

            3be3f423f403cc1706d71be62071282aea6321a62996594e32081aa842406595255b783276df8de74fa721d33a218531d621ae5ababcb2085d2deada6e8ee638

          • memory/1088-54-0x0000000074C91000-0x0000000074C93000-memory.dmp

            Filesize

            8KB