Analysis

  • max time kernel
    92s
  • max time network
    32s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    23-11-2022 10:08

General

  • Target

    eb109591d083d0e3dfc19fd5573ee246fba7825526e4a07d3faa85eb6aca96f2.exe

  • Size

    602KB

  • MD5

    a726ba45203b956ea7d8b9e9da8f3f77

  • SHA1

    6f86b200fdc477fc4fac1830b2fdba635324affe

  • SHA256

    eb109591d083d0e3dfc19fd5573ee246fba7825526e4a07d3faa85eb6aca96f2

  • SHA512

    f3ab1879e0961affe063c69067a7c9dbfef27e4523d9c0082ab86c2974fc77fd5f5faf10db97b5877ca9b6cad3cbe51ef42caf5fda27e6a72d87d94dc98fe89d

  • SSDEEP

    12288:0Iny5DYTSI7Ds9++1EZ3lt0skxcleWCsqctLIYIbc:yUTSUY9+Wu5NMcNWc

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\eb109591d083d0e3dfc19fd5573ee246fba7825526e4a07d3faa85eb6aca96f2.exe
    "C:\Users\Admin\AppData\Local\Temp\eb109591d083d0e3dfc19fd5573ee246fba7825526e4a07d3faa85eb6aca96f2.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:972
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:1812
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1748
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1104
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:608
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:932
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:860
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:524
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1864
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1428
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:560
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1336
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:2016

          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

            14910779461652149073f03600472971

            SHA1

            c0af4c6d257c4ce85ebe4d4a33e30f7a41e5afef

            SHA256

            94564345dfa605aeabd5b218769ead70bdae19b7dc5b0df8c7ea61562ca98f51

            SHA512

            cb89d5ed350e0197e8cb23355ae6d3c4bac6d7fd7f90f462365e39e31033223a9d741a5876ec0fc1bedf12ba0f4cb266682a3bb108368c3a5da93851f5d67333

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

            244KB

            MD5

            a90f74fc8170aa33cf01196e46b9fb24

            SHA1

            183c2df945bfcbddf69e268206ee7e0c1622d81b

            SHA256

            06626476ef253e2c35cc88184accffd90c269c30490ac36549c9b7fb170581cc

            SHA512

            759d989200d43d6450f07d87807a1b4aa806dc42f34fba1dbe202b33b8b355d315db4592d08deaa1a4caf8ca9ca081d9238b1a4b685bab5fe74c7c31b0916339

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

            108KB

            MD5

            62e6ee32e2b02e2633d5ba81aab2da5b

            SHA1

            3a5eec3308f968d0c94ad22d31fb2bcad93629ce

            SHA256

            93fbc79182a359fe1ddbcc4bcb22043be5513ae0cf78d892f75fa2aed779833b

            SHA512

            03a1e1a94b2278ddc81bf5bfbea9cb94784d7f0c6a0efb7858bcacd8f0ef5e0225d4ef2e43a8ad32ee47095d23202120be08dec63039c8d5323464e28705f6cd

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

            176KB

            MD5

            880155aeefcbdc9bee2ba24b6b8037cf

            SHA1

            48231b0b4b7459432ccce8cec7d18816ed158afe

            SHA256

            43f4c24adb06d98cfbd8aa6dd358bb4c73d8ca142aba231a6738ae1006dda7a2

            SHA512

            c198939020092acb7445ae6bbe3ddb44f44f72b63c670178010d91a61d548f72b28e25e912f09f504d32795172d1d1c2ad0c442b8e4aa32a05683cf6ff904d34

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

            176KB

            MD5

            880155aeefcbdc9bee2ba24b6b8037cf

            SHA1

            48231b0b4b7459432ccce8cec7d18816ed158afe

            SHA256

            43f4c24adb06d98cfbd8aa6dd358bb4c73d8ca142aba231a6738ae1006dda7a2

            SHA512

            c198939020092acb7445ae6bbe3ddb44f44f72b63c670178010d91a61d548f72b28e25e912f09f504d32795172d1d1c2ad0c442b8e4aa32a05683cf6ff904d34

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

            158KB

            MD5

            5333aca7cff71c0d28618a93b7c933b5

            SHA1

            f1c181b8c097749560a1c15a032e0e192661bf7f

            SHA256

            36f527ee3e33010304331a7919db7bb2a0b63765e9a9817dc09b96ff93384334

            SHA512

            38fd18b8d6aaf3736b1f422c7c6265939263b988f7071dad9719bcfbc68c24ff5be2b3c05b1f21c036ceee14f49a4e96712e2bbbc206771289f5187f8d7827ec

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

            158KB

            MD5

            5333aca7cff71c0d28618a93b7c933b5

            SHA1

            f1c181b8c097749560a1c15a032e0e192661bf7f

            SHA256

            36f527ee3e33010304331a7919db7bb2a0b63765e9a9817dc09b96ff93384334

            SHA512

            38fd18b8d6aaf3736b1f422c7c6265939263b988f7071dad9719bcfbc68c24ff5be2b3c05b1f21c036ceee14f49a4e96712e2bbbc206771289f5187f8d7827ec

          • \Users\Admin\AppData\Local\Temp\nseA22C.tmp\System.dll
            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nseA22C.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseA22C.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseA22C.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nseA22C.tmp\nsExec.dll
            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            14910779461652149073f03600472971

            SHA1

            c0af4c6d257c4ce85ebe4d4a33e30f7a41e5afef

            SHA256

            94564345dfa605aeabd5b218769ead70bdae19b7dc5b0df8c7ea61562ca98f51

            SHA512

            cb89d5ed350e0197e8cb23355ae6d3c4bac6d7fd7f90f462365e39e31033223a9d741a5876ec0fc1bedf12ba0f4cb266682a3bb108368c3a5da93851f5d67333

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            14910779461652149073f03600472971

            SHA1

            c0af4c6d257c4ce85ebe4d4a33e30f7a41e5afef

            SHA256

            94564345dfa605aeabd5b218769ead70bdae19b7dc5b0df8c7ea61562ca98f51

            SHA512

            cb89d5ed350e0197e8cb23355ae6d3c4bac6d7fd7f90f462365e39e31033223a9d741a5876ec0fc1bedf12ba0f4cb266682a3bb108368c3a5da93851f5d67333

          • \Windows\SysWOW64\hfnapi.dll
            Filesize

            106KB

            MD5

            14910779461652149073f03600472971

            SHA1

            c0af4c6d257c4ce85ebe4d4a33e30f7a41e5afef

            SHA256

            94564345dfa605aeabd5b218769ead70bdae19b7dc5b0df8c7ea61562ca98f51

            SHA512

            cb89d5ed350e0197e8cb23355ae6d3c4bac6d7fd7f90f462365e39e31033223a9d741a5876ec0fc1bedf12ba0f4cb266682a3bb108368c3a5da93851f5d67333

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            a90f74fc8170aa33cf01196e46b9fb24

            SHA1

            183c2df945bfcbddf69e268206ee7e0c1622d81b

            SHA256

            06626476ef253e2c35cc88184accffd90c269c30490ac36549c9b7fb170581cc

            SHA512

            759d989200d43d6450f07d87807a1b4aa806dc42f34fba1dbe202b33b8b355d315db4592d08deaa1a4caf8ca9ca081d9238b1a4b685bab5fe74c7c31b0916339

          • \Windows\SysWOW64\hfpapi.dll
            Filesize

            244KB

            MD5

            a90f74fc8170aa33cf01196e46b9fb24

            SHA1

            183c2df945bfcbddf69e268206ee7e0c1622d81b

            SHA256

            06626476ef253e2c35cc88184accffd90c269c30490ac36549c9b7fb170581cc

            SHA512

            759d989200d43d6450f07d87807a1b4aa806dc42f34fba1dbe202b33b8b355d315db4592d08deaa1a4caf8ca9ca081d9238b1a4b685bab5fe74c7c31b0916339

          • \Windows\SysWOW64\installd.exe
            Filesize

            108KB

            MD5

            62e6ee32e2b02e2633d5ba81aab2da5b

            SHA1

            3a5eec3308f968d0c94ad22d31fb2bcad93629ce

            SHA256

            93fbc79182a359fe1ddbcc4bcb22043be5513ae0cf78d892f75fa2aed779833b

            SHA512

            03a1e1a94b2278ddc81bf5bfbea9cb94784d7f0c6a0efb7858bcacd8f0ef5e0225d4ef2e43a8ad32ee47095d23202120be08dec63039c8d5323464e28705f6cd

          • \Windows\SysWOW64\nethtsrv.exe
            Filesize

            176KB

            MD5

            880155aeefcbdc9bee2ba24b6b8037cf

            SHA1

            48231b0b4b7459432ccce8cec7d18816ed158afe

            SHA256

            43f4c24adb06d98cfbd8aa6dd358bb4c73d8ca142aba231a6738ae1006dda7a2

            SHA512

            c198939020092acb7445ae6bbe3ddb44f44f72b63c670178010d91a61d548f72b28e25e912f09f504d32795172d1d1c2ad0c442b8e4aa32a05683cf6ff904d34

          • \Windows\SysWOW64\netupdsrv.exe
            Filesize

            158KB

            MD5

            5333aca7cff71c0d28618a93b7c933b5

            SHA1

            f1c181b8c097749560a1c15a032e0e192661bf7f

            SHA256

            36f527ee3e33010304331a7919db7bb2a0b63765e9a9817dc09b96ff93384334

            SHA512

            38fd18b8d6aaf3736b1f422c7c6265939263b988f7071dad9719bcfbc68c24ff5be2b3c05b1f21c036ceee14f49a4e96712e2bbbc206771289f5187f8d7827ec

          • memory/524-81-0x0000000000000000-mapping.dmp
          • memory/560-88-0x0000000000000000-mapping.dmp
          • memory/608-64-0x0000000000000000-mapping.dmp
          • memory/860-77-0x0000000000000000-mapping.dmp
          • memory/932-70-0x0000000000000000-mapping.dmp
          • memory/972-54-0x0000000075D01000-0x0000000075D03000-memory.dmp
            Filesize

            8KB

          • memory/972-59-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/972-75-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/972-91-0x0000000000360000-0x00000000007BE000-memory.dmp
            Filesize

            4.4MB

          • memory/1104-62-0x0000000000000000-mapping.dmp
          • memory/1428-87-0x0000000000000000-mapping.dmp
          • memory/1632-57-0x0000000000000000-mapping.dmp
          • memory/1748-61-0x0000000000000000-mapping.dmp
          • memory/1812-58-0x0000000000000000-mapping.dmp
          • memory/1864-82-0x0000000000000000-mapping.dmp