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Analysis

  • max time kernel
    153s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/10/2022, 04:03

General

  • Target

    b31089376dff069dca82d47f5b61cdaad447e8c8ebe5fd76ce7f7dac0ac8dd04.exe

  • Size

    54KB

  • MD5

    76307ca94f1e3b3a64c2e68a041d44d8

  • SHA1

    800907c39b5f34d94ee2f925bd639af66af993bf

  • SHA256

    b31089376dff069dca82d47f5b61cdaad447e8c8ebe5fd76ce7f7dac0ac8dd04

  • SHA512

    8f302b887a7c4409b569510b9d332b59cdee2294058619dd4a16292539a668a94fef9f6fb1e1f20a6a85b3949c62e1fdca1dee63f614014cddc8392617623937

  • SSDEEP

    1536:BLiSTK2DKfhw/kmBjMEWt1gKWSgfcmjxWNG9:BLiST9D2CMmBoE+gKOfnjJ9

Malware Config

Signatures

  • joker

    Joker is an Android malware that targets billing and SMS fraud.

  • Executes dropped EXE 1 IoCs
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 43 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b31089376dff069dca82d47f5b61cdaad447e8c8ebe5fd76ce7f7dac0ac8dd04.exe
    "C:\Users\Admin\AppData\Local\Temp\b31089376dff069dca82d47f5b61cdaad447e8c8ebe5fd76ce7f7dac0ac8dd04.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3600
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\s_Mg_l_219.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3792
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\redload\1.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3460
        • C:\PROGRA~1\INTERN~1\iexplore.exe
          C:\PROGRA~1\INTERN~1\IEXPLORE.EXE http://www.cnkankan.com/?82133
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4808
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4808 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4228
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\redload\1.inf
          4⤵
            PID:4604
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\redload\2.bat
            4⤵
            • Drops file in Program Files directory
            • Suspicious use of WriteProcessMemory
            PID:1496
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKLM\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.82133.com/?S"" /f
              5⤵
              • Modifies Internet Explorer settings
              • Modifies Internet Explorer start page
              PID:3128
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.82133.com/?S"" /f
              5⤵
              • Modifies Internet Explorer settings
              • Modifies Internet Explorer start page
              PID:1592
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\tmp" /v "key" /d ""http://www.82133.com/?S"" /f
              5⤵
                PID:2740
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
                5⤵
                • Modifies registry class
                PID:2724
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}\Shell\open(&H)\Command" /v "" /d "wscript -e:vbs ""C:\Users\Admin\AppData\Roaming\redload\3.bat""" /f
                5⤵
                • Modifies registry class
                PID:3848
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h C:\Users\Admin\AppData\Roaming\redload\tmp\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}
                5⤵
                • Sets file to hidden
                • Views/modifies file attributes
                PID:4568
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h C:\Users\Admin\AppData\Roaming\redload\tmp
                5⤵
                • Sets file to hidden
                • Views/modifies file attributes
                PID:2792
              • C:\Windows\SysWOW64\rundll32.exe
                rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\redload\2.inf
                5⤵
                • Adds Run key to start application
                • Suspicious use of WriteProcessMemory
                PID:3008
                • C:\Windows\SysWOW64\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  6⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:4696
                  • C:\Windows\SysWOW64\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    7⤵
                      PID:3984
                • C:\Windows\SysWOW64\rundll32.exe
                  rundll32 D:\VolumeDH\inj.dat,MainLoad
                  5⤵
                    PID:2756
            • C:\Users\Admin\AppData\Local\Temp\inlDAD1.tmp
              C:\Users\Admin\AppData\Local\Temp\inlDAD1.tmp
              2⤵
              • Executes dropped EXE
              PID:3648
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\B31089~1.EXE > nul
              2⤵
                PID:2320

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              Filesize

              471B

              MD5

              60c5dda6c87529c1fdbe874fd534913b

              SHA1

              141dd530c67ebdac9998a8f253aede034519ebbb

              SHA256

              c210d69c28a4a6abb399a425ffb66797df7c3fcf3bfc9eab0bf0dc7e19fc84ee

              SHA512

              bfd86d9e0ee15f5b183070573cfd693e83ce1083aa9c061ce9e68ed0f38518352ccd11b5f78a4b9179bccbed6dad89ee2003b414fbc1e20cf835af7c57b232c5

            • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7423F88C7F265F0DEFC08EA88C3BDE45_AA1E8580D4EBC816148CE81268683776

              Filesize

              434B

              MD5

              f70429c9b459ec2298f1329bc2215ae3

              SHA1

              b05511cdf2834201f38fc12c0741b1bcebd53a3e

              SHA256

              c374c70f27c0553d0c2a2cd8e980e6d435beb7b52b2ba07daa8ae7844653ee90

              SHA512

              f630f8643db04d8fe8b23861cf9f74a476299d8ada623432010cf8d56d988c18531512e73365486ef7a43be7409bfa4a609ef9dd76def116ba28a2734fe27407

            • C:\Users\Admin\AppData\Local\Temp\cdf1912.tmp

              Filesize

              791B

              MD5

              1706b41fd446b5718a8419c0fcb35d55

              SHA1

              d9bb8df22acdc60c754ac14982cf795df3b1b815

              SHA256

              5c6d11ac3f220f8286455764ab2581dcb6554692d3b9974b097364d77edb3943

              SHA512

              68c9f6170ecdfcc79fc63cb646901d2ac52a915620b159047b2c93761c261897eb5ecc15065635105637a61a840d393104c15ea8268897fb8bb2fbc1a56c626e

            • C:\Users\Admin\AppData\Local\Temp\inlDAD1.tmp

              Filesize

              57.2MB

              MD5

              801a03795fb713113fb7331e204f43bf

              SHA1

              c1e45f51ebdb529d0ec5b64e9686c06240f2af13

              SHA256

              41afa30668ed740ead7268ec3a34327b42831b2e74a54cd54758acf1357aa577

              SHA512

              ee87e5763c7c491e082ffb4c86793f6335f35fcfeb49ee7c8735b56b31fdbff877ecb02232b93bc7868f4c1c7825b9eb4c25c0ae77ed65ab57cfb160b67091d5

            • C:\Users\Admin\AppData\Local\Temp\inlDAD1.tmp

              Filesize

              57.2MB

              MD5

              801a03795fb713113fb7331e204f43bf

              SHA1

              c1e45f51ebdb529d0ec5b64e9686c06240f2af13

              SHA256

              41afa30668ed740ead7268ec3a34327b42831b2e74a54cd54758acf1357aa577

              SHA512

              ee87e5763c7c491e082ffb4c86793f6335f35fcfeb49ee7c8735b56b31fdbff877ecb02232b93bc7868f4c1c7825b9eb4c25c0ae77ed65ab57cfb160b67091d5

            • C:\Users\Admin\AppData\Local\Temp\s_Mg_l_219.bat

              Filesize

              54B

              MD5

              504490369970f1c0eb580afbcdf91618

              SHA1

              b52f65cd538e6c998b2c7e3167f9c8e8fa6c7971

              SHA256

              a13a0579286521f0d7cb55fc7d28c6d33f14c0573e9e69f7584fa4008a8e7d43

              SHA512

              5495ce79abf0fc4ffbfaf9aefa484145f4e0d3e8457be0e2e4dfb1284fb5413016f2d9867e2386db5c4f7b51863bfffeae8ea6bd879053fdf6a928ab2a0857ad

            • C:\Users\Admin\AppData\Roaming\redload\1.bat

              Filesize

              3KB

              MD5

              168976102055ae6902b5d251d4b39401

              SHA1

              37c28d5b4d19bf3ef0be7be04ac4b54c71866773

              SHA256

              aabf9954046b451c6287c18b37448dbce289b0a76bb0bcbe72b7e97b6ebfc9fc

              SHA512

              95474e88ce99544ab19d25c3f96b348b99733858b8382baeedce62748444b529e55c0c4df84c20ff05eb7b3172baaa22ade7604c7288b536e1895cd95dbc42a6

            • C:\Users\Admin\AppData\Roaming\redload\1.inf

              Filesize

              410B

              MD5

              66a1f0147fed7ddd19e9bb7ff93705c5

              SHA1

              9d803c81ea2195617379b880b227892ba30b0bf6

              SHA256

              4f45ce85e221352f7fe26e04968c7f7267dc24b55cf2b72b929b4c90e48cb764

              SHA512

              cfe51756ddec75d240249980a4d27870d15983add25058e4d0da4d8a3ea11384d4d228d6cbc95091f91e516e1ab4dfb1e315941dbd95bf717d4b31936311d597

            • C:\Users\Admin\AppData\Roaming\redload\2.bat

              Filesize

              3KB

              MD5

              428b15afd0f31b5f77d86f84a2e0bf36

              SHA1

              e76c640936f9ea1a4cf0f26e5417d4cbbde08ea2

              SHA256

              390a9eb07646fea162115045ea2b76a3a248d8823e7dc4a54851c39463ddfdb5

              SHA512

              3272917c8a65641eb39c280ba2f23c359145d8951ec78d803143fdbfa87cf6233a4d3a03607bcae7703f718dc592297aefc69726086a206e5d0bffd5655d8ca4

            • C:\Users\Admin\AppData\Roaming\redload\2.inf

              Filesize

              248B

              MD5

              2197ffb407fb3b2250045c084f73b70a

              SHA1

              3d0efbacba73ac5e8d77f0d25d63fc424511bcf6

              SHA256

              a1a42f5a41ce65135b1ad525eabc04cce89ee07d2f51d06e5e1dea6047081591

              SHA512

              b35a99e144da3f02de71158f58a6b937435d1bce941126a554783c667654b880527b11ba8a5c0fcf093ce28863ea4f5e60f73f8f973a727f177d584d2e9c80fe

            • C:\Users\Admin\AppData\Roaming\redload\4.bat

              Filesize

              5.8MB

              MD5

              2ed223890ada5ab7a0442d32fdf037f0

              SHA1

              ca99344163e924cbdd28e503fd2c5f3753f8a540

              SHA256

              32a0098a303cc608a22136a8545845ddb22e503fc5c24647d13fa837c9683117

              SHA512

              750ebab758bdc40bbd38d3986abb95ebdf6dc1a1caab7c2c7384af30223fcdec9ab9db03ab048e4a536e4efb1e62dc8b793aa017ddce82e9d95269eeaf02f9a5

            • memory/3600-176-0x0000000000B10000-0x0000000000B35000-memory.dmp

              Filesize

              148KB

            • memory/3600-132-0x0000000000B10000-0x0000000000B35000-memory.dmp

              Filesize

              148KB

            • memory/3600-134-0x0000000000B10000-0x0000000000B35000-memory.dmp

              Filesize

              148KB

            • memory/3600-133-0x0000000000D10000-0x0000000000D13000-memory.dmp

              Filesize

              12KB

            • memory/4808-182-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-197-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-171-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-175-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-164-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-161-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-178-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-158-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-157-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-183-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-155-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-154-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-187-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-185-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-188-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-190-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-189-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-181-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-167-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-153-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-152-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-195-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-196-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-170-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-149-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-151-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-150-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-201-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-148-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-203-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-147-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-209-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-144-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-211-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-212-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-213-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-214-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-215-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-217-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-218-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-219-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-220-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-222-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-223-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-224-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-225-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB

            • memory/4808-143-0x00007FFADA510000-0x00007FFADA57E000-memory.dmp

              Filesize

              440KB