Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02-10-2022 09:48

General

  • Target

    4636d17328f89f649f95bac628ee989a0f718d24347e9fae5b5e385e585c9ae8.exe

  • Size

    140KB

  • MD5

    6c912fd00210919bc0c3c3c0c11658b1

  • SHA1

    517d170affe2bae4d703dd9848824b0be60b2578

  • SHA256

    4636d17328f89f649f95bac628ee989a0f718d24347e9fae5b5e385e585c9ae8

  • SHA512

    5a57230bb0c29db024ebe42ccbf363dcc94708509de5522367e2611271b00da9a8cefab7bdccf82a72e7fe35815ddbcf06b977546dd408f03dd1b68a285d70a7

  • SSDEEP

    1536:nnMg2OVLjlevyaRLBnLuRgiaUxRIxecePKH5nKLV+o:M0LpeTLlamiaUxRIxecePKQF

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 50 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\4636d17328f89f649f95bac628ee989a0f718d24347e9fae5b5e385e585c9ae8.exe
    "C:\Users\Admin\AppData\Local\Temp\4636d17328f89f649f95bac628ee989a0f718d24347e9fae5b5e385e585c9ae8.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4972
    • 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:3148
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\winzip\1.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3796
        • 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:2808
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:2808 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4352
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\winzip\1.inf
          4⤵
            PID:772
          • C:\Windows\SysWOW64\cmd.exe
            C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\winzip\2.bat
            4⤵
            • Enumerates connected drives
            • Drops file in Program Files directory
            • Suspicious use of WriteProcessMemory
            PID:4428
            • 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:2988
            • 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:3492
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\tmp" /v "key" /d ""http://www.82133.com/?S"" /f
              5⤵
                PID:1516
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
                5⤵
                • Modifies registry class
                PID:2900
              • 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\winzip\3.bat""" /f
                5⤵
                • Modifies registry class
                PID:3224
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h C:\Users\Admin\AppData\Roaming\winzip\tmp\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}
                5⤵
                • Sets file to hidden
                • Views/modifies file attributes
                PID:2124
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h C:\Users\Admin\AppData\Roaming\winzip\tmp
                5⤵
                • Sets file to hidden
                • Views/modifies file attributes
                PID:4360
              • C:\Windows\SysWOW64\rundll32.exe
                rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\winzip\2.inf
                5⤵
                • Adds Run key to start application
                • Suspicious use of WriteProcessMemory
                PID:1400
                • C:\Windows\SysWOW64\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  6⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:4572
                  • C:\Windows\SysWOW64\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    7⤵
                      PID:4244
                • C:\Windows\SysWOW64\rundll32.exe
                  rundll32 D:\VolumeDH\inj.dat,MainLoad
                  5⤵
                    PID:4824
            • C:\Users\Admin\AppData\Local\Temp\inl19FD.tmp
              C:\Users\Admin\AppData\Local\Temp\inl19FD.tmp
              2⤵
              • Executes dropped EXE
              PID:3520
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\4636D1~1.EXE > nul
              2⤵
                PID:3744

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

            Loading Replay Monitor...

            Downloads

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

              Filesize

              471B

              MD5

              fd70739fca5345a28f924f9102ae10ee

              SHA1

              6ce3f92183544f3bf52cb76364591589cb940a19

              SHA256

              f238404cc643efddef8ff430f128cdc8ec1513969eaac24b5e5bce81248a91e7

              SHA512

              a787d3a2bceeaed2f2a29f357df6ae17d5b9f66a3c561550d5f83c308ad26a1ddf876488151ff5e51ce93bfb9d0c7b8ca812d595e8d3ebdda7d805707ac1b278

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

              Filesize

              434B

              MD5

              03a8c1f81e6c830c31c16015408738e1

              SHA1

              b2609b9cde57b0a5ac156494dfb65c90b1cbe6ed

              SHA256

              2c9896741a7bd6e372440a7fdeed5873a03ef5531bcde54d2c52350c0c7c055f

              SHA512

              f0c040e1e66c9fc5a3cccc2a1450e124322cb4bacf879965f2e4852c608bf598f11cbed7dffa0e85808800ee630dc7b79fbe35f8c07a77056b29a19bbb07c5da

            • C:\Users\Admin\AppData\Local\Microsoft\Internet Explorer\imagestore\z2evvp3\imagestore.dat

              Filesize

              1KB

              MD5

              d9310bf8ffbf15e71190abf48a573cf5

              SHA1

              a1dc5f216e9aac91680894f51fcdbcaed8bce927

              SHA256

              b8ba42a2ecf79d05409cee309ba59d7947b3601adb98c5f1dbf6be7943b34f30

              SHA512

              3bd8d90a931e1970d6603aa20e6a7b5405b839e4cd9a99efd4708770224897bd12549adbd1cffeb61033a70de4ac54cb6497a0cc4bdfc3e6383c25a728e8bec9

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

              Filesize

              1KB

              MD5

              3facc60dceffd752f284e286f4ceeb8a

              SHA1

              667ffb98ff425eeb8e3c4c85e0b9fee75cf76da4

              SHA256

              a0583d0e827c3e2aabdfb4e99d6ce78e06eac265bd85f339559433571853f56d

              SHA512

              26c16fd7d173aca60695d464035f639affbb0dcc74788b9246fa051a2bdcfa886e162014ff0eca751fcb90c84a17ab77bacfda1442249f4cbe6bb334c06ce317

            • C:\Users\Admin\AppData\Local\Temp\inl19FD.tmp

              Filesize

              57.2MB

              MD5

              3e382ce37cda3072ee24e8eb00d56319

              SHA1

              7dbd9ecff8b8fc16374785dff207dcbf3746b8c6

              SHA256

              7c8a88ab4a572d6670286881ee93578173ae2c113d0646260f0978d8a00cfa26

              SHA512

              254172eae22f610714ae0f5be852084d8f4f775a60e88646c80c0aa114e0a51dac3d78a63457ad6c14e27a02fcb1b782ff413cc10495f380cf2bb2386034d487

            • C:\Users\Admin\AppData\Local\Temp\inl19FD.tmp

              Filesize

              57.2MB

              MD5

              3e382ce37cda3072ee24e8eb00d56319

              SHA1

              7dbd9ecff8b8fc16374785dff207dcbf3746b8c6

              SHA256

              7c8a88ab4a572d6670286881ee93578173ae2c113d0646260f0978d8a00cfa26

              SHA512

              254172eae22f610714ae0f5be852084d8f4f775a60e88646c80c0aa114e0a51dac3d78a63457ad6c14e27a02fcb1b782ff413cc10495f380cf2bb2386034d487

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

              Filesize

              53B

              MD5

              9b41ad553fc0a87c014049dfede9e7fa

              SHA1

              840b9c356ec59e65d33bae61c439b0abf11663bd

              SHA256

              a4bd6b14aa9694ba74db5503576072036cd232d586b5e3dd3fe3dade84a67b5e

              SHA512

              6de134478cd5052675cf936f3dc92fb823d72fc3d44c66f5d0755691481302f63cfe602dd7b492354487c9c5b692a09a404c1081265bb3676030cb43a64369b8

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

              Filesize

              2KB

              MD5

              68a30985a8b4a1dae5b24721ca5b8269

              SHA1

              78481107bbddcf18ffc4d25a184ec74274241a6b

              SHA256

              fe94352a25ade782ea77db82f1ec849479ebfe4605156142fc3fdfabc507a0cf

              SHA512

              d452182a296a9e202bce81ad0c752b34d4d779cac94bb54a07517936b79a4007127585673c524c75055f15e33c56eef0d26d1c448723a97fe70c15457bae5a24

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

              Filesize

              410B

              MD5

              66a1f0147fed7ddd19e9bb7ff93705c5

              SHA1

              9d803c81ea2195617379b880b227892ba30b0bf6

              SHA256

              4f45ce85e221352f7fe26e04968c7f7267dc24b55cf2b72b929b4c90e48cb764

              SHA512

              cfe51756ddec75d240249980a4d27870d15983add25058e4d0da4d8a3ea11384d4d228d6cbc95091f91e516e1ab4dfb1e315941dbd95bf717d4b31936311d597

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

              Filesize

              3KB

              MD5

              c106ffc420b54a4f0fd331f10657dc66

              SHA1

              8930d5b56358f518bdf5ccca2b4d24f98ce7a03f

              SHA256

              fb8218f8c607ec3a4c4cb6e59ee81a94cf8ff513d0b09565ad456c88a9e7250b

              SHA512

              ee82fb57af0dddf8f1acab855cda151d3eacb8e11b0adc3a81852c1e2d77a566aa630ff5dabd8c7bc92ebe78b6187cc823c8a4a645ca78ee88e2c27483080fbd

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

              Filesize

              247B

              MD5

              bf915cb73f6126d712c727039ad3d5e6

              SHA1

              73ff72a83711c90e45f8bd34505b3284fd2a870b

              SHA256

              3fd8eeaededa0a76d36df51803c01fe328ba110702a625b28c25bc83f6ef5940

              SHA512

              752387b92716e8e5296d24c532f16e17a955c8f02055c9fd66d4ff84c8f140d7f2a43cfbb4ff97bd5ba1eebc7fa0c215a9283a180a9598b1b413730d19db1957

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

              Filesize

              44KB

              MD5

              cfe6df01181e5ee0c90e83e917c86f3e

              SHA1

              3850550e8644e4686b2f156d852ad6396027e616

              SHA256

              9293c4a0bdc93d072096952d9df60b66545c6083f451703a9df5ecdde12fa790

              SHA512

              77df60a81d6099b7b4f5687ab38349d76a1410e9dd15d3e0bc042b7eb8634ff30c3d7c210707aa51f454367895c175eeb48c8427b3ba1d7c38a2b365e17cafb0

            • memory/2808-172-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-181-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-151-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-221-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-220-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-155-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-153-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-156-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-157-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-215-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-147-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-145-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-214-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-160-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-212-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-165-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-164-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-167-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-211-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-169-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-210-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-209-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-208-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-175-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-177-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-207-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-180-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-179-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-152-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-183-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-187-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-188-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-186-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-189-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-202-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-191-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-192-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-193-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-194-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-198-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-199-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-200-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/2808-201-0x00007FFDE1160000-0x00007FFDE11CE000-memory.dmp

              Filesize

              440KB

            • memory/4972-132-0x0000000000400000-0x0000000000423000-memory.dmp

              Filesize

              140KB

            • memory/4972-227-0x0000000000400000-0x0000000000423000-memory.dmp

              Filesize

              140KB

            • memory/4972-133-0x0000000000400000-0x0000000000423000-memory.dmp

              Filesize

              140KB