Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-11-2022 13:35

General

  • Target

    ac64af32d1a865c03ade6dfd7ce0787b2f1db51fae16020168d5f48e3823e14f.exe

  • Size

    46KB

  • MD5

    080ec93c00dfbbacf60a59eebb55803d

  • SHA1

    0153848c149f909205bfda63ec094c0fe013096f

  • SHA256

    ac64af32d1a865c03ade6dfd7ce0787b2f1db51fae16020168d5f48e3823e14f

  • SHA512

    20be23706b6148fa8bb2724ce1ab10239cf45978300b74a642ad43b680fec629ab6d21204a8fb28060eb6ad85510f76952763350eb416d07771ddf6a3be17c22

  • SSDEEP

    768:+GCV6OOVTEQynyk40FO9P9ZgKRuON91o/spL4OH8:kV/O5s40mlZgK8wg/GLxH8

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 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 6 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ac64af32d1a865c03ade6dfd7ce0787b2f1db51fae16020168d5f48e3823e14f.exe
    "C:\Users\Admin\AppData\Local\Temp\ac64af32d1a865c03ade6dfd7ce0787b2f1db51fae16020168d5f48e3823e14f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:912
    • 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:1640
      • 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:1112
        • 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:1652
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1652 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4028
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\winzip\1.inf
          4⤵
            PID:1060
          • 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:2548
            • 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:4956
            • 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:2072
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\tmp" /v "key" /d ""http://www.71628.com/?S"" /f
              5⤵
                PID:380
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
                5⤵
                • Modifies registry class
                PID:5076
              • 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:1044
              • 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:4964
              • 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:2156
              • 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:4972
                • C:\Windows\SysWOW64\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  6⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:3508
                  • C:\Windows\SysWOW64\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    7⤵
                      PID:3152
                • C:\Windows\SysWOW64\rundll32.exe
                  rundll32 D:\VolumeDH\inj.dat,MainLoad
                  5⤵
                    PID:4676
            • C:\Users\Admin\AppData\Local\Temp\inlDE8B.tmp
              C:\Users\Admin\AppData\Local\Temp\inlDE8B.tmp
              2⤵
              • Executes dropped EXE
              PID:3780
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\AC64AF~1.EXE > nul
              2⤵
                PID:4788

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              Filesize

              1KB

              MD5

              ab301ff15c000838c221b76a00aecb93

              SHA1

              a9bd18bb6340c7055fdb627d85bf6f90a48eca21

              SHA256

              5df478abe9d623d2707ca39a73259cbe95da2c824d23ed44454f55c5d67e6884

              SHA512

              0cb9e594bbd0d27f03a0553255a0b238243147154c2bfc07a2a915369153185003087e47cd582f84f0dad954ea508896cce1387f596604f93e47287fe46e42e7

            • C:\Users\Admin\AppData\Local\Temp\inlDE8B.tmp

              Filesize

              57.2MB

              MD5

              0e34dd8ae339cfdfb439f7a895754db7

              SHA1

              6fb28a18321286579d40ab02d8a892814ffeaeb0

              SHA256

              e1f95faaeb2e91a8f9471367ac5f6635ae2081fb39c3204b5c3e98c625b7481a

              SHA512

              d38d0f1cd51326b9f0f1420d2f56c119af362fefe6d25c2adc479725c81b0d7c92806811583174bb031f623692dafa634766aa145e732ef769614fe3cf251303

            • C:\Users\Admin\AppData\Local\Temp\inlDE8B.tmp

              Filesize

              57.2MB

              MD5

              0e34dd8ae339cfdfb439f7a895754db7

              SHA1

              6fb28a18321286579d40ab02d8a892814ffeaeb0

              SHA256

              e1f95faaeb2e91a8f9471367ac5f6635ae2081fb39c3204b5c3e98c625b7481a

              SHA512

              d38d0f1cd51326b9f0f1420d2f56c119af362fefe6d25c2adc479725c81b0d7c92806811583174bb031f623692dafa634766aa145e732ef769614fe3cf251303

            • 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

              582695c0131019067973d3870c8c9bca

              SHA1

              575da5536074707385418985375d6735fec7de77

              SHA256

              4dd7bb56ca6f2e48cd57ceafcd79ff31c11ce2d474d777ee5c9e16c5bfbf3e9c

              SHA512

              ea59965f427ca826734115290e42ed9a2b7db66853474a735c0add16b5e0f2e799fe7586aa2114443797d3ea02c09e36523d072dc12be38c9be5ddbab6083231

            • 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

              2cc7ab0e0e60b07b036165b5359b4f29

              SHA1

              ce5d46d531e37bb52ac4983c061963223b043052

              SHA256

              52ed22e575304c981f0f44c771fdd7d4fe185ecfba4ff9e3ac24986686e58be9

              SHA512

              35bb22bf0c253a0d099f6fbf92ebea36714a674459f7185bce8267aee79ddceeef010a86b3e0f5a1aa9af0d7d3843c4a905a171529e19472543c916b7c926746

            • 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

              35673f5bd4092b54ac1fdbef85c1e022

              SHA1

              ab26da2bf9c9e3e8d460752dc64f7c5a038dbe9c

              SHA256

              604bf5eb431bfddc6c38c94acaf776cfa2dbea8b7525be86c8c99c51b08e21f8

              SHA512

              2d2cad83a287e69bb59db6f3367654c7b2b2ce9e6109962aa7ef489376c07ecf7930cc95a76f9b36b68fc9d30eea51908170d3f26cdd753982d2453ccd458191

            • memory/912-132-0x00000000009F0000-0x0000000000A10000-memory.dmp

              Filesize

              128KB

            • memory/912-229-0x00000000009F0000-0x0000000000A10000-memory.dmp

              Filesize

              128KB

            • memory/912-133-0x0000000000820000-0x0000000000823000-memory.dmp

              Filesize

              12KB

            • memory/1652-177-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-184-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-152-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-154-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-155-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-157-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-158-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-160-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-161-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-162-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-164-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-221-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-220-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-149-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-148-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-145-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-147-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-170-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-144-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-178-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-142-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-179-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-167-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-165-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-182-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-141-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-151-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-215-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-214-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-187-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-185-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-188-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-212-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-211-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-210-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-209-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-198-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-196-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-208-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-194-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-200-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-201-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB

            • memory/1652-206-0x00007FFA11490000-0x00007FFA114FE000-memory.dmp

              Filesize

              440KB