Analysis

  • max time kernel
    154s
  • max time network
    168s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-10-2022 20:10

General

  • Target

    45b8f409788a95bfc3ed6446d93a9571af2cc65d605103e470d1da402aba8dc7.exe

  • Size

    46KB

  • MD5

    a352add70ee41efb5f8a4ec4658d2886

  • SHA1

    985db2384a900396050dc7777a4b6c84b97618be

  • SHA256

    45b8f409788a95bfc3ed6446d93a9571af2cc65d605103e470d1da402aba8dc7

  • SHA512

    d5bddd3f6dc2b5da3f065f04030b699299c73e5f716a656c5e34b7520dc1cce3c72d5edfdbffa840314719738ac589f507a24bca2032b50d3eed9d6771c5b2f4

  • SSDEEP

    768:+GCV6OOVTEQynyk40FO9P9ZgKRuON91o/spL4OHa:kV/O5s40mlZgK8wg/GLxHa

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 48 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\45b8f409788a95bfc3ed6446d93a9571af2cc65d605103e470d1da402aba8dc7.exe
    "C:\Users\Admin\AppData\Local\Temp\45b8f409788a95bfc3ed6446d93a9571af2cc65d605103e470d1da402aba8dc7.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4696
    • 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:320
      • 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:3548
        • 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:3648
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:3648 CREDAT:17410 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:4584
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\winzip\1.inf
          4⤵
            PID:3464
          • 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:3872
            • 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:4176
            • 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:4312
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCU\Software\tmp" /v "key" /d ""http://www.71628.com/?S"" /f
              5⤵
                PID:4184
              • C:\Windows\SysWOW64\reg.exe
                reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
                5⤵
                • Modifies registry class
                PID:1320
              • 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:3856
              • 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:3420
              • 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:2780
              • 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:4172
                • C:\Windows\SysWOW64\runonce.exe
                  "C:\Windows\system32\runonce.exe" -r
                  6⤵
                  • Checks processor information in registry
                  • Suspicious use of WriteProcessMemory
                  PID:1016
                  • C:\Windows\SysWOW64\grpconv.exe
                    "C:\Windows\System32\grpconv.exe" -o
                    7⤵
                      PID:3392
                • C:\Windows\SysWOW64\rundll32.exe
                  rundll32 D:\VolumeDH\inj.dat,MainLoad
                  5⤵
                    PID:1224
            • C:\Users\Admin\AppData\Local\Temp\inl26A0.tmp
              C:\Users\Admin\AppData\Local\Temp\inl26A0.tmp
              2⤵
              • Executes dropped EXE
              PID:4928
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\45B8F4~1.EXE > nul
              2⤵
                PID:3284

            Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

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

              Filesize

              471B

              MD5

              a66314123c8c72372bcb8583a5400a95

              SHA1

              fc3e45060463c37775da0bd4a8920296d222753d

              SHA256

              657c92d95798fc5dad4272f3d6d71776737ac0bcdce4ac6864ca5532f2ccf34d

              SHA512

              d9f5c243b04d7b3fbbcb37c68c583db672390644500cfa4d58280048d9fde52c668fd67e84ecd6ace20b2813eefb756627adbd04a6f19719f6e907aa3fffe4f1

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

              Filesize

              434B

              MD5

              7d1ee94d210e3ea1e31cace1153e42ef

              SHA1

              e0a3e411c7ef525d6b1030108718a25f8a07cdc4

              SHA256

              c7cd339729e464574047d740e111e91bf1fb21955dae34cdeb66c9eb5ebc23f6

              SHA512

              325f51a3edfcd0d6c21eec5b3444b03f3b1b8ca84b843b6a050a60d903da1192b7f2cdef986adc3f56f77731daf43e5f2c256408257d2e075de4de75a09c3ea9

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

              Filesize

              1KB

              MD5

              ab301ff15c000838c221b76a00aecb93

              SHA1

              a9bd18bb6340c7055fdb627d85bf6f90a48eca21

              SHA256

              5df478abe9d623d2707ca39a73259cbe95da2c824d23ed44454f55c5d67e6884

              SHA512

              0cb9e594bbd0d27f03a0553255a0b238243147154c2bfc07a2a915369153185003087e47cd582f84f0dad954ea508896cce1387f596604f93e47287fe46e42e7

            • C:\Users\Admin\AppData\Local\Temp\inl26A0.tmp

              Filesize

              57.2MB

              MD5

              aea2cf23adbae2b5378856186be93a6c

              SHA1

              f5a693159ba710d2b0b79eae406a8a41418d1b9d

              SHA256

              18d199d4aa23d58eca38926a70e7fa9339d3d118ab5ebc6c7c2686f41c1ae3d7

              SHA512

              c8faac8f59ad3c9ba5aae833dbbc998a450d781f300be5a299f6da7a247de229022c32f4f65666086c7b8ff2b6858b10cd88450826bc55a00c57f030bc9fd6cd

            • C:\Users\Admin\AppData\Local\Temp\inl26A0.tmp

              Filesize

              57.2MB

              MD5

              aea2cf23adbae2b5378856186be93a6c

              SHA1

              f5a693159ba710d2b0b79eae406a8a41418d1b9d

              SHA256

              18d199d4aa23d58eca38926a70e7fa9339d3d118ab5ebc6c7c2686f41c1ae3d7

              SHA512

              c8faac8f59ad3c9ba5aae833dbbc998a450d781f300be5a299f6da7a247de229022c32f4f65666086c7b8ff2b6858b10cd88450826bc55a00c57f030bc9fd6cd

            • 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

              06da964d0e968f46d37ba53b5109aba2

              SHA1

              b1cf0a4cfdcb9eae25a5e495274599bfbfbd5e22

              SHA256

              2e8728180cf207d76fd935a9420855601a0bab2f488c85ffcc095a90e2cfb4b0

              SHA512

              16f913c625c51c74bd4d5b0ccffcbbfec8c148d54a881a508e7efc0eb08f3b2059d516e794ed6eb4ebfb7318776e3b1d191a2da0d4ab7387c926d1050424a85b

            • memory/3648-174-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-192-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-160-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-162-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-163-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-157-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-154-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-152-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-165-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-224-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-167-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-168-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-149-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-223-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-171-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-222-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-173-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-221-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-176-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-148-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-178-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-180-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-182-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-183-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-184-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-185-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-220-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-187-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-188-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-218-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-144-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-159-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-193-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-143-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-194-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-198-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-199-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-200-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-201-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-202-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-217-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-208-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-209-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-210-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-212-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-211-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-213-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-215-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/3648-216-0x00007FFE1D960000-0x00007FFE1D9CE000-memory.dmp

              Filesize

              440KB

            • memory/4696-132-0x00000000007F0000-0x0000000000810000-memory.dmp

              Filesize

              128KB

            • memory/4696-134-0x00000000007F0000-0x0000000000810000-memory.dmp

              Filesize

              128KB

            • memory/4696-237-0x00000000007F0000-0x0000000000810000-memory.dmp

              Filesize

              128KB

            • memory/4696-133-0x0000000000230000-0x0000000000233000-memory.dmp

              Filesize

              12KB