Analysis

  • max time kernel
    60s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 05:42

General

  • Target

    31b1148f6ec66f2f8179617a8b33b6c6105ae7268337a914ee4b4a60c0980d6f.exe

  • Size

    602KB

  • MD5

    767c937f421e53fef89b21e8aed63f2d

  • SHA1

    f09509bc18085f552cad89372e6f57c9d9d9180a

  • SHA256

    31b1148f6ec66f2f8179617a8b33b6c6105ae7268337a914ee4b4a60c0980d6f

  • SHA512

    15d894357680f5b26bd3c4c7e1efcba7f791360b168ec8b04f86c46444a65df814607507654008aace02938d039cf1090d8b28288df2b7298366f3e4d9972427

  • SSDEEP

    12288:bIny5DYTRKTMwwwEPHYaGLTCTSUCCXplaQTn1HpxY6j8:jUTYQHwEPHwTWSUPa4rxYH

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\31b1148f6ec66f2f8179617a8b33b6c6105ae7268337a914ee4b4a60c0980d6f.exe
    "C:\Users\Admin\AppData\Local\Temp\31b1148f6ec66f2f8179617a8b33b6c6105ae7268337a914ee4b4a60c0980d6f.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:1880
    • C:\Windows\SysWOW64\net.exe
      net stop nethttpservice
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1436
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop nethttpservice
        3⤵
          PID:2036
      • C:\Windows\SysWOW64\net.exe
        net stop serviceupdater
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1724
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop serviceupdater
          3⤵
            PID:1980
        • C:\Windows\SysWOW64\installd.exe
          "C:\Windows\system32\installd.exe" nethfdrv
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1944
        • C:\Windows\SysWOW64\nethtsrv.exe
          "C:\Windows\system32\nethtsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          • Loads dropped DLL
          PID:1608
        • C:\Windows\SysWOW64\netupdsrv.exe
          "C:\Windows\system32\netupdsrv.exe" -nfdi
          2⤵
          • Executes dropped EXE
          PID:1028
        • C:\Windows\SysWOW64\net.exe
          net start nethttpservice
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1212
          • C:\Windows\SysWOW64\net1.exe
            C:\Windows\system32\net1 start nethttpservice
            3⤵
              PID:1260
          • C:\Windows\SysWOW64\net.exe
            net start serviceupdater
            2⤵
            • Suspicious use of WriteProcessMemory
            PID:1128
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 start serviceupdater
              3⤵
                PID:1440
          • C:\Windows\SysWOW64\nethtsrv.exe
            C:\Windows\SysWOW64\nethtsrv.exe
            1⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of AdjustPrivilegeToken
            PID:1636
          • C:\Windows\SysWOW64\netupdsrv.exe
            C:\Windows\SysWOW64\netupdsrv.exe
            1⤵
            • Executes dropped EXE
            PID:536

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f93f701aef10cc40a96ed4176500237b

            SHA1

            6700e2334b19d2b9d88d72f47387fa80d9fb0a5b

            SHA256

            dc6b10fb4804294f289362f24e43cbe7b2e907b4954227bb4833cf5a07909bab

            SHA512

            b1e79ab5f03dddaac89358cd9ec5bfda4c2885a65f1f63559d1ca69401f48746bd4f33c60d6d6f0e02385db7ee97ec03f557d8d5cc690f86e0589d08f41d3449

          • C:\Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ef4222b0711868a3ba6f4b8bd7a0e636

            SHA1

            d823362465ba9c340618f4e5151e89f5631aa68a

            SHA256

            4b846ea5d6fda8fa064e2534669a1f02cac9b279951415bf79051a4a91fed6aa

            SHA512

            a2f3c231e1192ebb30a8491f34e1327d46add0ede95f338df8eb48d66e0dc38c2a5d0448046dc294135167a4e4a46a2702862a2057f49cac46210ee1df4ae4d7

          • C:\Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            183f47d4ea821a849e2a28a24a98f607

            SHA1

            02999d461724e686f63a93b42eee3e14d9b45814

            SHA256

            7cd8350dd339bfddcf853a7cec89af7d0553c51cc999746d407ba7ad417878d4

            SHA512

            480e3017631c32886a11b3b29bf97ab54c633fed447087242829a0381c39228fef742e148c3944446f11925d5f06f34d33fe4b485b080bfcacd1860675c0e309

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            841a75392636aa53a0c7617b6ab2be00

            SHA1

            6dede1b540843d4cb343e20956f0ca046cf98d2a

            SHA256

            3d610dc23200bfec5909f1c442b46c4afed86010924df86bb720203007746096

            SHA512

            1893a1cddfe811aa6629135e36630106309d75d430dfde8502832d8b50cb49551e63330846d453e3e499c9d3cfaf642cb708085744fead12e151cda9424a18ce

          • C:\Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            841a75392636aa53a0c7617b6ab2be00

            SHA1

            6dede1b540843d4cb343e20956f0ca046cf98d2a

            SHA256

            3d610dc23200bfec5909f1c442b46c4afed86010924df86bb720203007746096

            SHA512

            1893a1cddfe811aa6629135e36630106309d75d430dfde8502832d8b50cb49551e63330846d453e3e499c9d3cfaf642cb708085744fead12e151cda9424a18ce

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b2af0d6bd8211089af8b9869f2911bf3

            SHA1

            37efce3fd40ea8302a74d85e27a4d4af6c06d557

            SHA256

            dd8c1375c1a945f14705aaaf2a73085a52e23aa179eef248e5e6d35af5e58ad0

            SHA512

            5ddba5b4fb0425de75676d97c1233327590502891687d559b5c36512dd11b0e1dba6f8a6c8a5cdec5e059ba72957f1aab1384e4ee2fbb9efe38417d318fd73d0

          • C:\Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b2af0d6bd8211089af8b9869f2911bf3

            SHA1

            37efce3fd40ea8302a74d85e27a4d4af6c06d557

            SHA256

            dd8c1375c1a945f14705aaaf2a73085a52e23aa179eef248e5e6d35af5e58ad0

            SHA512

            5ddba5b4fb0425de75676d97c1233327590502891687d559b5c36512dd11b0e1dba6f8a6c8a5cdec5e059ba72957f1aab1384e4ee2fbb9efe38417d318fd73d0

          • \Users\Admin\AppData\Local\Temp\nsj3363.tmp\System.dll

            Filesize

            11KB

            MD5

            c17103ae9072a06da581dec998343fc1

            SHA1

            b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

            SHA256

            dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

            SHA512

            d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

          • \Users\Admin\AppData\Local\Temp\nsj3363.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj3363.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj3363.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Users\Admin\AppData\Local\Temp\nsj3363.tmp\nsExec.dll

            Filesize

            6KB

            MD5

            acc2b699edfea5bf5aae45aba3a41e96

            SHA1

            d2accf4d494e43ceb2cff69abe4dd17147d29cc2

            SHA256

            168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

            SHA512

            e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f93f701aef10cc40a96ed4176500237b

            SHA1

            6700e2334b19d2b9d88d72f47387fa80d9fb0a5b

            SHA256

            dc6b10fb4804294f289362f24e43cbe7b2e907b4954227bb4833cf5a07909bab

            SHA512

            b1e79ab5f03dddaac89358cd9ec5bfda4c2885a65f1f63559d1ca69401f48746bd4f33c60d6d6f0e02385db7ee97ec03f557d8d5cc690f86e0589d08f41d3449

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f93f701aef10cc40a96ed4176500237b

            SHA1

            6700e2334b19d2b9d88d72f47387fa80d9fb0a5b

            SHA256

            dc6b10fb4804294f289362f24e43cbe7b2e907b4954227bb4833cf5a07909bab

            SHA512

            b1e79ab5f03dddaac89358cd9ec5bfda4c2885a65f1f63559d1ca69401f48746bd4f33c60d6d6f0e02385db7ee97ec03f557d8d5cc690f86e0589d08f41d3449

          • \Windows\SysWOW64\hfnapi.dll

            Filesize

            106KB

            MD5

            f93f701aef10cc40a96ed4176500237b

            SHA1

            6700e2334b19d2b9d88d72f47387fa80d9fb0a5b

            SHA256

            dc6b10fb4804294f289362f24e43cbe7b2e907b4954227bb4833cf5a07909bab

            SHA512

            b1e79ab5f03dddaac89358cd9ec5bfda4c2885a65f1f63559d1ca69401f48746bd4f33c60d6d6f0e02385db7ee97ec03f557d8d5cc690f86e0589d08f41d3449

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ef4222b0711868a3ba6f4b8bd7a0e636

            SHA1

            d823362465ba9c340618f4e5151e89f5631aa68a

            SHA256

            4b846ea5d6fda8fa064e2534669a1f02cac9b279951415bf79051a4a91fed6aa

            SHA512

            a2f3c231e1192ebb30a8491f34e1327d46add0ede95f338df8eb48d66e0dc38c2a5d0448046dc294135167a4e4a46a2702862a2057f49cac46210ee1df4ae4d7

          • \Windows\SysWOW64\hfpapi.dll

            Filesize

            244KB

            MD5

            ef4222b0711868a3ba6f4b8bd7a0e636

            SHA1

            d823362465ba9c340618f4e5151e89f5631aa68a

            SHA256

            4b846ea5d6fda8fa064e2534669a1f02cac9b279951415bf79051a4a91fed6aa

            SHA512

            a2f3c231e1192ebb30a8491f34e1327d46add0ede95f338df8eb48d66e0dc38c2a5d0448046dc294135167a4e4a46a2702862a2057f49cac46210ee1df4ae4d7

          • \Windows\SysWOW64\installd.exe

            Filesize

            108KB

            MD5

            183f47d4ea821a849e2a28a24a98f607

            SHA1

            02999d461724e686f63a93b42eee3e14d9b45814

            SHA256

            7cd8350dd339bfddcf853a7cec89af7d0553c51cc999746d407ba7ad417878d4

            SHA512

            480e3017631c32886a11b3b29bf97ab54c633fed447087242829a0381c39228fef742e148c3944446f11925d5f06f34d33fe4b485b080bfcacd1860675c0e309

          • \Windows\SysWOW64\nethtsrv.exe

            Filesize

            176KB

            MD5

            841a75392636aa53a0c7617b6ab2be00

            SHA1

            6dede1b540843d4cb343e20956f0ca046cf98d2a

            SHA256

            3d610dc23200bfec5909f1c442b46c4afed86010924df86bb720203007746096

            SHA512

            1893a1cddfe811aa6629135e36630106309d75d430dfde8502832d8b50cb49551e63330846d453e3e499c9d3cfaf642cb708085744fead12e151cda9424a18ce

          • \Windows\SysWOW64\netupdsrv.exe

            Filesize

            159KB

            MD5

            b2af0d6bd8211089af8b9869f2911bf3

            SHA1

            37efce3fd40ea8302a74d85e27a4d4af6c06d557

            SHA256

            dd8c1375c1a945f14705aaaf2a73085a52e23aa179eef248e5e6d35af5e58ad0

            SHA512

            5ddba5b4fb0425de75676d97c1233327590502891687d559b5c36512dd11b0e1dba6f8a6c8a5cdec5e059ba72957f1aab1384e4ee2fbb9efe38417d318fd73d0

          • memory/1880-54-0x0000000076DC1000-0x0000000076DC3000-memory.dmp

            Filesize

            8KB

          • memory/1880-63-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1880-55-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB

          • memory/1880-91-0x0000000000360000-0x00000000007BE000-memory.dmp

            Filesize

            4.4MB