Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12-10-2022 22:16

General

  • Target

    a286becab98d9cffbc1cf4bf9755302a46247145fab84401c02aff82f47541f8.exe

  • Size

    46KB

  • MD5

    7b0e22256ca84a9f36affb4ebec87598

  • SHA1

    77a786e61339ad2f8075b1bad1ac813edac5e24b

  • SHA256

    a286becab98d9cffbc1cf4bf9755302a46247145fab84401c02aff82f47541f8

  • SHA512

    e7a7bd897cdd57ecae4d031b4ab35e77ba8949cc8191d8af11879b15e1ee9dd37b65aef667a3d99baeb850ade25454a19c09f87aba16e786eeea136c9621a21c

  • SSDEEP

    768:rFzj+w97y5nP1fkml51yK30XYi8RU1ODA3sq+146CtUeVbSjFNBW3qjUVLO:rFzj+xPKm1l0XYVU1n8tyz2eVboAajuy

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
  • 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 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\a286becab98d9cffbc1cf4bf9755302a46247145fab84401c02aff82f47541f8.exe
    "C:\Users\Admin\AppData\Local\Temp\a286becab98d9cffbc1cf4bf9755302a46247145fab84401c02aff82f47541f8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2808
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\start_min_bat.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\winamp\1.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4288
        • C:\PROGRA~1\INTERN~1\iexplore.exe
          C:\PROGRA~1\INTERN~1\IEXPLORE.EXE http://www.cnkankan.com/?71628
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3212
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3212 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:3104
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\winamp\1.inf
          4⤵
            PID:4952
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\winamp\2.bat
            4⤵
            • Enumerates connected drives
            • Drops file in Program Files directory
            • Suspicious use of WriteProcessMemory
            PID:932
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKLM\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.71628.com/?S"" /f
              5⤵
              • Modifies Internet Explorer settings
              • Modifies Internet Explorer start page
              PID:4516
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.71628.com/?S"" /f
              5⤵
              • Modifies Internet Explorer settings
              • Modifies Internet Explorer start page
              PID:4708
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\tmp" /v "key" /d ""http://www.71628.com/?S"" /f
              5⤵
                PID:3732
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
                5⤵
                • Modifies registry class
                PID:4668
              • 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\winamp\3.bat""" /f
                5⤵
                • Modifies registry class
                PID:4548
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h C:\Users\Admin\AppData\Roaming\winamp\tmp\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}
                5⤵
                • Sets file to hidden
                • Views/modifies file attributes
                PID:4312
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h C:\Users\Admin\AppData\Roaming\winamp\tmp
                5⤵
                • Sets file to hidden
                • Views/modifies file attributes
                PID:3544
              • C:\Windows\SysWOW64\rundll32.exe
                rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\winamp\2.inf
                5⤵
                • Adds Run key to start application
                • Suspicious use of WriteProcessMemory
                PID:3916
                • C:\Windows\SysWOW64\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  6⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:3492
                  • C:\Windows\SysWOW64\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    7⤵
                      PID:4316
                • C:\Windows\SysWOW64\rundll32.exe
                  rundll32 D:\VolumeDH\inj.dat,MainLoad
                  5⤵
                    PID:4036
            • C:\Users\Admin\AppData\Local\Temp\inl19EE.tmp
              C:\Users\Admin\AppData\Local\Temp\inl19EE.tmp
              2⤵
              • Executes dropped EXE
              PID:872
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\A286BE~1.EXE > nul
              2⤵
                PID:2440

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              1KB

              MD5

              90257a867ffe2f50582b357970165efc

              SHA1

              fff0bf3eb80136b811b0149801a31511f697a9ec

              SHA256

              c7e7d19e69d2821b085d1ec77f16119f353d6d999196f6535108c2c0d8f3f189

              SHA512

              24f469d23045afb658132e464be528911c1bc5f30f34696298a564b1050dd7569f9fe57ae68c4aa84a884a5970e186e1165c104c7b3751aa829797de9ad7e50e

            • C:\Users\Admin\AppData\Local\Temp\inl19EE.tmp

              Filesize

              57.2MB

              MD5

              1b2dfe3524a51228bb9c879850b23735

              SHA1

              67d5f959a5bc0bef2bb9b6aca88c57d67c96a184

              SHA256

              beff46a77bae995d13a0ad0284d484e27889eec9b24f394a35abb23de8f002d3

              SHA512

              1725f51c30df5518d6569919657bd4d4e0625030f70cc0d54cea0e4f25d3414884f8e9df51c1c9306f0b99d1492b279f5d3a80222820895ffeeb0d29de41bad7

            • C:\Users\Admin\AppData\Local\Temp\inl19EE.tmp

              Filesize

              57.2MB

              MD5

              1b2dfe3524a51228bb9c879850b23735

              SHA1

              67d5f959a5bc0bef2bb9b6aca88c57d67c96a184

              SHA256

              beff46a77bae995d13a0ad0284d484e27889eec9b24f394a35abb23de8f002d3

              SHA512

              1725f51c30df5518d6569919657bd4d4e0625030f70cc0d54cea0e4f25d3414884f8e9df51c1c9306f0b99d1492b279f5d3a80222820895ffeeb0d29de41bad7

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

              Filesize

              53B

              MD5

              03aa4f858377d4d17b0ef66cf73cff6c

              SHA1

              75e8331fdaf16a85e61b8aabcfc50219625a5e30

              SHA256

              a4714dae286e9d4ca145934fb71342bcdbe30cc2f951e3758ea6448256da71fc

              SHA512

              87b4a725a8c7e4632282a04d51a637a95726743250ac85f2fd2189f954fde6026d80a75925788d90c4f0fd92f7fc954bfcab41d57f9a89131786c6b1779f45a2

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

              Filesize

              2KB

              MD5

              582695c0131019067973d3870c8c9bca

              SHA1

              575da5536074707385418985375d6735fec7de77

              SHA256

              4dd7bb56ca6f2e48cd57ceafcd79ff31c11ce2d474d777ee5c9e16c5bfbf3e9c

              SHA512

              ea59965f427ca826734115290e42ed9a2b7db66853474a735c0add16b5e0f2e799fe7586aa2114443797d3ea02c09e36523d072dc12be38c9be5ddbab6083231

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

              Filesize

              410B

              MD5

              66a1f0147fed7ddd19e9bb7ff93705c5

              SHA1

              9d803c81ea2195617379b880b227892ba30b0bf6

              SHA256

              4f45ce85e221352f7fe26e04968c7f7267dc24b55cf2b72b929b4c90e48cb764

              SHA512

              cfe51756ddec75d240249980a4d27870d15983add25058e4d0da4d8a3ea11384d4d228d6cbc95091f91e516e1ab4dfb1e315941dbd95bf717d4b31936311d597

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

              Filesize

              3KB

              MD5

              2cc7ab0e0e60b07b036165b5359b4f29

              SHA1

              ce5d46d531e37bb52ac4983c061963223b043052

              SHA256

              52ed22e575304c981f0f44c771fdd7d4fe185ecfba4ff9e3ac24986686e58be9

              SHA512

              35bb22bf0c253a0d099f6fbf92ebea36714a674459f7185bce8267aee79ddceeef010a86b3e0f5a1aa9af0d7d3843c4a905a171529e19472543c916b7c926746

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

              Filesize

              247B

              MD5

              efdcc94d238cbb81632c97810cc9d185

              SHA1

              fa8b883263ed48065e7e1c592afd4730a2d29260

              SHA256

              32cc99a9c018f2936eead0d6a0c1c115f17d28d12cfe77393b8fd38d2d0d643a

              SHA512

              4deb2ce6ecab1c96e6de49be73c774a90b737cc5c29dd600b50cf7cac27695443e155cfcd5642415df9206e9c0f64a9a072290e83a0318e24b502fddfc77d431

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

              Filesize

              44KB

              MD5

              8e0f07ea59d93b58df7cb382773b51e4

              SHA1

              e51c8ee7fe646d23f23746f1396d54522779a8c1

              SHA256

              1841edcd73156b88c1aba5fd0e0c140e78193e66b4e500c93efce00fe228be5f

              SHA512

              f1b698e4890fc33d0912d5995ea670987916043a330042e7ab52a358d69f7d95900e7f45c7bece2cedaa9c03b8782591f7b11932635467c1ac46e7eefc8accb7

            • memory/2808-227-0x00000000002A0000-0x00000000002BF000-memory.dmp

              Filesize

              124KB

            • memory/2808-133-0x0000000000EB0000-0x0000000000EB3000-memory.dmp

              Filesize

              12KB

            • memory/2808-132-0x00000000002A0000-0x00000000002BF000-memory.dmp

              Filesize

              124KB

            • memory/3212-177-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-184-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-154-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-156-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-157-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-158-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-161-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-151-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-162-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-150-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-148-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-167-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-149-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-147-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-169-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-159-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-171-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-173-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-174-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-176-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-145-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-141-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-178-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-179-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-221-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-220-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-144-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-183-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-215-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-153-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-214-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-187-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-212-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-211-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-192-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-194-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-210-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-208-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-199-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-209-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-142-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-200-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-201-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB

            • memory/3212-207-0x00007FFD353C0000-0x00007FFD3542E000-memory.dmp

              Filesize

              440KB