Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-10-2022 12:25

General

  • Target

    7997a273dfec79d0db8c47b9a1c4e1e30c8eb341e2dfe12147e9145f0f5f8dd5.exe

  • Size

    96KB

  • MD5

    a18fc4fd364633a455ea3e50b0efb305

  • SHA1

    899964b9c3566239ba8f822bfe597cbc3121f586

  • SHA256

    7997a273dfec79d0db8c47b9a1c4e1e30c8eb341e2dfe12147e9145f0f5f8dd5

  • SHA512

    494ed7bd6118f6f0cb8d7f8351f94ccbadd1e7287a0b936ed2d5e39b3f8613cf7c0f43de3f4fdf7ead1aba3da45b02ee5c1149e58a4ca97bbd408267c951b5c8

  • SSDEEP

    768:ty837t4FkXJREBku3/nK5xa/24/ki8qkM7B1YlhrIWYHLxqu+TPW1Kljl9nnyQOc:l4PSuPKTBZrO/A5Qr+TOn+eWQ8qM+m

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 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.

  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 59 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 13 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7997a273dfec79d0db8c47b9a1c4e1e30c8eb341e2dfe12147e9145f0f5f8dd5.exe
    "C:\Users\Admin\AppData\Local\Temp\7997a273dfec79d0db8c47b9a1c4e1e30c8eb341e2dfe12147e9145f0f5f8dd5.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4076
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp_ext.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3360
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\lua\1.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1008
        • 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:4424
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4424 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4060
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\lua\1.inf
          4⤵
            PID:4416
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\lua\2.bat
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1332
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCR\CLSID\{D71C5380-D2A0-CD69-E3EE-E1002B3A309E}" /v "IsShortCut" /d "" /f
              5⤵
              • Modifies registry class
              PID:4596
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCR\CLSID\{D71C5380-D2A0-CD69-E3EE-E1002B3A309E}\Shell\open(&H)\Command" /v "" /d "wscript -e:vbs ""C:\Users\Admin\AppData\Roaming\lua\3.bat""" /f
              5⤵
              • Modifies registry class
              PID:4004
            • C:\Windows\SysWOW64\attrib.exe
              attrib +s +h C:\Users\Admin\AppData\Roaming\lua\tmp\a.{D71C5380-D2A0-CD69-E3EE-E1002B3A309E}
              5⤵
              • Sets file to hidden
              • Views/modifies file attributes
              PID:956
            • C:\Windows\SysWOW64\attrib.exe
              attrib +s +h C:\Users\Admin\AppData\Roaming\lua\tmp
              5⤵
              • Sets file to hidden
              • Views/modifies file attributes
              PID:4328
            • C:\Windows\SysWOW64\rundll32.exe
              rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\lua\2.inf
              5⤵
              • Adds Run key to start application
              • Suspicious use of WriteProcessMemory
              PID:4604
              • C:\Windows\SysWOW64\runonce.exe
                "C:\Windows\system32\runonce.exe" -r
                6⤵
                • Checks processor information in registry
                • Suspicious use of WriteProcessMemory
                PID:2072
                • C:\Windows\SysWOW64\grpconv.exe
                  "C:\Windows\System32\grpconv.exe" -o
                  7⤵
                    PID:2196
              • C:\Windows\SysWOW64\tasklist.exe
                tasklist
                5⤵
                • Enumerates processes with tasklist
                • Suspicious use of AdjustPrivilegeToken
                PID:4244
              • C:\Windows\SysWOW64\find.exe
                find /i "360tray.exe" tasklist.txt
                5⤵
                  PID:4116
                • C:\Windows\SysWOW64\reg.exe
                  reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu" /v "{871C5380-42A0-1069-A2EA-08002B30309D}" /d "1" /f
                  5⤵
                    PID:3776
                  • C:\Windows\SysWOW64\reg.exe
                    reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\ClassicStartMenu" /v "{871C5380-42A0-1069-A2EA-08002B30309D}" /d "1" /f
                    5⤵
                      PID:3460
                    • C:\Windows\SysWOW64\reg.exe
                      reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\HideDesktopIcons\NewStartPanel" /v "{871C5380-42A0-1069-A2EA-08002B30309D}" /d "1" /f
                      5⤵
                        PID:4780
                      • C:\Windows\SysWOW64\reg.exe
                        reg add "HKCR\htafile\DefaultIcon" /v "" /d "C:\Program Files\Internet Explorer\IEXPLORE.EXE" /f
                        5⤵
                        • Modifies registry class
                        PID:1868
                      • C:\Windows\SysWOW64\reg.exe
                        reg add "HKCR\htafile" /v "NeverShowExt" /d "" /f
                        5⤵
                        • Modifies registry class
                        PID:688
                      • 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:3916
                      • 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:4136
                • C:\Users\Admin\AppData\Local\Temp\inlE32E.tmp
                  C:\Users\Admin\AppData\Local\Temp\inlE32E.tmp
                  2⤵
                  • Executes dropped EXE
                  PID:1524
                • C:\Windows\SysWOW64\cmd.exe
                  "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\7997A2~1.EXE > nul
                  2⤵
                    PID:4984

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\dqptnfu\imagestore.dat

                  Filesize

                  1KB

                  MD5

                  15e7776431b16457306ab483a18f78e1

                  SHA1

                  63781c7bb64e54e9420886b3f4a7eb2d32368ab7

                  SHA256

                  92b3016e78f4e06ec8c658017a8a79c012e4f905f61112a94226463338cc24f6

                  SHA512

                  8aa6ad98ca9c9d95b46844f5655094399c07a02b38d78d4ab2716773d30418f9fbeda28b3e2136d44cdcd24430d28c0b09c645eeaa1623bba60e5211ba90da68

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

                  Filesize

                  1KB

                  MD5

                  5e300ab3cf5cfdd7fad2e9cecbe10888

                  SHA1

                  6d9cf5fa643d779928a2260749d374200bc3ab7b

                  SHA256

                  1ae11a97bc7f49666aaad5abbdaada3989bc7b26bedaace34e79cb274455fa49

                  SHA512

                  bb898deb86b91b601291a4174ed8bec5d79d95876ab5ae138d5c132fb50eed213aa95d6cbcc667cdea80bbe4dd68a52e3eeb17466dd74ff8e27b27d9076a3fb2

                • C:\Users\Admin\AppData\Local\Temp\inlE32E.tmp

                  Filesize

                  57.2MB

                  MD5

                  c7095b74521dd960e6411cfaf133c3cb

                  SHA1

                  ec412a4d083d10029955c3fc3e4bceeb06d1cb5c

                  SHA256

                  6ff96c8be4a0511e918805031931b6b7dd4bf3baee8f6ea614bb547d82840047

                  SHA512

                  d4a9cd82570c862c24babfd395afb30c5e9d52b2ca02022e90e7ef55ea49720a7e0e650474a5d6f3b37d8fd906e47d7505c6c8f6c5964c188c86a4f0c5c029ab

                • C:\Users\Admin\AppData\Local\Temp\inlE32E.tmp

                  Filesize

                  57.2MB

                  MD5

                  c7095b74521dd960e6411cfaf133c3cb

                  SHA1

                  ec412a4d083d10029955c3fc3e4bceeb06d1cb5c

                  SHA256

                  6ff96c8be4a0511e918805031931b6b7dd4bf3baee8f6ea614bb547d82840047

                  SHA512

                  d4a9cd82570c862c24babfd395afb30c5e9d52b2ca02022e90e7ef55ea49720a7e0e650474a5d6f3b37d8fd906e47d7505c6c8f6c5964c188c86a4f0c5c029ab

                • C:\Users\Admin\AppData\Local\Temp\tasklist.txt

                  Filesize

                  7KB

                  MD5

                  d5a36caf9857203e486703f51e12ac8c

                  SHA1

                  e93ee06ef32d4c5643d8d236613865f4b40280c1

                  SHA256

                  7841d1108c79cb19a831a3512f23afbdd18af314a784c3476f25a1f4df1b4008

                  SHA512

                  d9b5833f9d77eba020c285d94dbd946f99b0f537560e8a37ad8237c13ebf9d1b20d5919874610500060d79570166382d26b54ed1e4b285026504044da12f95f9

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

                  Filesize

                  50B

                  MD5

                  e08ad52d3d132292f9c51e7cfec5fe08

                  SHA1

                  269f7eb185a9ff02664297bfb6f5df9f86ec10f0

                  SHA256

                  bd2a3003fb1f771283b30a044c49aecb72bfdff4322330337dba4992ecd198f4

                  SHA512

                  3dc0331f3ee9a57de7bda71a94953239bc7033a130f2b783b35d17ce3ed7b7928c154323d10ba81bd81d3bfd2d7c123cec55f5178d2b44286c2f857ccd6a1722

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

                  Filesize

                  2KB

                  MD5

                  e9b0ea3bb8833d31df07f7ceaf019e02

                  SHA1

                  d147c5363b7fa233cbf2247897a465661f5ad408

                  SHA256

                  c9908af4e516f3fe5631e31d099f16f8c4e4d8b91d073003c10a3a0a0bc30fe3

                  SHA512

                  4c2a36d0498dd3332ca19e969d1ceaab2a57ef4d12adcc3ffff218a9d72dbfc1622fb22c08215da778821d50d3fd72b0d559f891196176e00459ef01300c9b2b

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

                  Filesize

                  424B

                  MD5

                  5d8e8066c8e44558a044f4de83b79df2

                  SHA1

                  4920014abe179ae430bb55b3c4bdb6966327f551

                  SHA256

                  1d51c8abf3a0f5d4b2e61209507052bd12797d12c7821cb8868a0f3cd9950149

                  SHA512

                  792b8d0dcb3309ac0513d45e683dbf301ad06d60f4ae770b9d6c0d975eef6b85af17fb3f05fb74866556a11ef0c92f98b20fd81d455ab4b97606257fa782ea81

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

                  Filesize

                  8KB

                  MD5

                  fad373a616743963bbd11fa966e3f5ac

                  SHA1

                  89638961a6a0d6622fa3214e6abc2bc810c549cf

                  SHA256

                  2c5b82c6c39cfba12d70cd4080165bd18ce3e65d3e540e2f787b9e7c583eb319

                  SHA512

                  956c7d65a3ac45b688fe3ae71f04c664542d03910f8f727ed27fc5d36bf2571d3e397d16ee28ac19512dfa939b8bbd453a307f9d778b84bf689cf32af9a4c39b

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

                  Filesize

                  244B

                  MD5

                  2de3e6e4faea8c4a10ddd4f26455caca

                  SHA1

                  b7c02274aa020619e6c7b925427b027ffcc28629

                  SHA256

                  9f29d64886130752a5fe40ce6e83a8f35dc65340871cfe435499a609037c2824

                  SHA512

                  0e49cbd89766d3697ce4c9a2c83de32ebaee2d41f1a635a94cf0c73541aaa614f4f5b755f55d21fdea07fc76985bc741f2649abc1c6a32e9876ffa6b3a1c33c8

                • memory/4076-232-0x0000000000400000-0x0000000000418000-memory.dmp

                  Filesize

                  96KB

                • memory/4076-133-0x0000000000400000-0x0000000000418000-memory.dmp

                  Filesize

                  96KB

                • memory/4076-132-0x0000000000400000-0x0000000000418000-memory.dmp

                  Filesize

                  96KB

                • memory/4424-176-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-197-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-169-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-170-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-163-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-161-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-158-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-157-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-174-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-155-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-177-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-179-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-154-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-183-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-184-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-182-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-185-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-153-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-152-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-188-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-189-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-190-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-191-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-192-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-196-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-199-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-150-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-149-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-201-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-202-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-142-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-147-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-209-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-148-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-226-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-143-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-213-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-214-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-215-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-216-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-217-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-219-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-220-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB

                • memory/4424-225-0x00007FFE37FB0000-0x00007FFE3801E000-memory.dmp

                  Filesize

                  440KB