Analysis

  • max time kernel
    148s
  • max time network
    169s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29-10-2022 11:06

General

  • Target

    40b424701cdde23a9b4bab6a58421ae79ff0507db97795571b1b49359f46d130.exe

  • Size

    57KB

  • MD5

    12203f67a96d5821bfbc786eaad05e35

  • SHA1

    2aa3f3cf895676771e5cb4bde895108f6a078a1c

  • SHA256

    40b424701cdde23a9b4bab6a58421ae79ff0507db97795571b1b49359f46d130

  • SHA512

    8669fe85885a5c8a007147b061c89442087e0de539f7cb4a5c804c7bc4e4d08589c08ea53c5cf5d6ed6f78c626a15ca6dd47dece94c75ed882759dd885c23a36

  • SSDEEP

    1536:z53rJiDSIBvPuvvrQ1Ovq64vQzJ7lZ+NF:z53rJShN9uqrQzxlZiF

Malware Config

Signatures

  • joker

    Joker is an Android malware that targets billing and SMS fraud.

  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops file in Program Files directory 2 IoCs
  • Drops file in Windows 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 41 IoCs
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
  • Modifies registry class 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 14 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\40b424701cdde23a9b4bab6a58421ae79ff0507db97795571b1b49359f46d130.exe
    "C:\Users\Admin\AppData\Local\Temp\40b424701cdde23a9b4bab6a58421ae79ff0507db97795571b1b49359f46d130.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1896
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\leg20_check.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:868
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\PPLive\1.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1504
        • 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:1072
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1072 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1776
        • C:\Windows\SysWOW64\rundll32.exe
          rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\PPLive\1.inf
          4⤵
          • Drops file in Windows directory
          • Suspicious use of AdjustPrivilegeToken
          PID:832
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /K C:\Users\Admin\AppData\Roaming\PPLive\2.bat
          4⤵
          • Drops file in Program Files directory
          • Suspicious use of WriteProcessMemory
          PID:828
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKLM\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.71628.com/?i"" /f
            5⤵
            • Modifies Internet Explorer settings
            • Modifies Internet Explorer start page
            PID:932
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCU\Software\Microsoft\Internet Explorer\Main" /v "Start Page" /d ""http://www.71628.com/?i"" /f
            5⤵
            • Modifies Internet Explorer settings
            • Modifies Internet Explorer start page
            PID:1928
          • C:\Windows\SysWOW64\reg.exe
            reg add "HKCU\Software\tmp" /v "key" /d ""http://www.71628.com/?i"" /f
            5⤵
              PID:1644
            • C:\Windows\SysWOW64\reg.exe
              reg add "HKCR\CLSID\{971C5380-92A0-5A69-B3EE-C3002B33309E}" /v "IsShortCut" /d "" /f
              5⤵
              • Modifies registry class
              PID:1936
            • 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\PPLive\3.bat""" /f
              5⤵
              • Modifies registry class
              PID:276
            • C:\Windows\SysWOW64\attrib.exe
              attrib +s +h C:\Users\Admin\AppData\Roaming\PPLive\tmp\a.{971C5380-92A0-5A69-B3EE-C3002B33309E}
              5⤵
              • Sets file to hidden
              • Views/modifies file attributes
              PID:1608
            • C:\Windows\SysWOW64\attrib.exe
              attrib +s +h C:\Users\Admin\AppData\Roaming\PPLive\tmp
              5⤵
              • Sets file to hidden
              • Views/modifies file attributes
              PID:1688
            • C:\Windows\SysWOW64\rundll32.exe
              rundll32 syssetup,SetupInfObjectInstallAction DefaultInstall 128 C:\Users\Admin\AppData\Roaming\PPLive\2.inf
              5⤵
              • Adds Run key to start application
              • Drops file in Windows directory
              • Suspicious use of AdjustPrivilegeToken
              PID:1720
              • C:\Windows\SysWOW64\runonce.exe
                "C:\Windows\system32\runonce.exe" -r
                6⤵
                • Checks processor information in registry
                PID:1872
                • C:\Windows\SysWOW64\grpconv.exe
                  "C:\Windows\System32\grpconv.exe" -o
                  7⤵
                    PID:1340
              • C:\Windows\SysWOW64\rundll32.exe
                rundll32 D:\VolumeDH\inj.dat,MainLoad
                5⤵
                  PID:1020

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\leg20_check.bat

          Filesize

          53B

          MD5

          23962a245f75fe25510051582203aff1

          SHA1

          20832a3a1179bb2730194d2f7738d41d5d669a43

          SHA256

          1abcea214b9b2bd76cc04be07ae2d4d70371e6ca443d99f4f1327afe7a5fc647

          SHA512

          dc36b64f2dbb710652900a31295c148760b0c44eae13515aa29613916c9dffe3d8e55ba61568f7c27b43bf0c341f7dcd4b9c721f81627fc6bb915b15c358fe80

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

          Filesize

          3KB

          MD5

          286fe459674aef6eee17f6ac79a15fdb

          SHA1

          233dc43099c575a67b05fc1076e676324fd6e63d

          SHA256

          872cc596dc1fe6d5a131129bd84c2a76d6874e9c57ab2cd792d4d12b6f014fd2

          SHA512

          c9acc4a134001da76e7ae6aa5ae65ce58501942dfc1f80959ae4db27c06010db753c9d115eedbe0b2b0e30dd5c4dcd1d32816493b053c65cee81d3a343c87314

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

          Filesize

          492B

          MD5

          34c14b8530e1094e792527f7a474fe77

          SHA1

          f71c4e9091140256b34c18220d1dd1efab1f301d

          SHA256

          fe0dfb3458bfe2a3632d365e00765fa10f14d62e7dfa8b70a055c7eb9fdb6713

          SHA512

          25bb09b526e1e9f5c6052f1f7c36b37c956c1b5649936af8df3abfcf120c931f3d2603e17a061cb99d8c8074bfb1973a5423cce89762fca53cd46aeb3e8944a2

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

          Filesize

          3KB

          MD5

          d4917ae9072a10d8e12ef3b282b25b3b

          SHA1

          bd9ec6c6395997525ec7c15ecca2f115573cc14c

          SHA256

          6f7649988962c61ac7644262ee6082ef352bbb00cb155a3f4ef0467fbdf1c67b

          SHA512

          c6ed3119e008191ad56050f6b72a2d64e908c57e80fd0c252b8b1947cf091644c83b6bc16c56d6e2153579eb3e8711c8cd608977426a0906d56a7713bfca309d

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

          Filesize

          247B

          MD5

          ca436f6f187bc049f9271ecdcbf348fa

          SHA1

          bf8a548071cfc150f7affb802538edf03d281106

          SHA256

          6cdfa9b7f0e1e4ee16bc8ce5d7448d47ea8866c1f55f3e56be5c2a4d183ca534

          SHA512

          d19e20aabddad6b0284f8c1d473e9180f30b49d4d8b54f26e7c8630228e16b1f6ba04023c5e8b1993d8a10d97adcfff683b216f79b9981bf16181641aebdd591

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

          Filesize

          12.3MB

          MD5

          4bab61433d5a65af85d0c68f2986974d

          SHA1

          d89db4105688f27778a9cc85d003e1f1fe325874

          SHA256

          62960b48031b3093edc36dbb5347a3e2c6b674c555929dbb427eef59bf77c81d

          SHA512

          ecda44b6a8c029c4d92b2e0ed3ac1ee05a30918e784cd03f9b7bfb217c9fbd0c42aa30d54f56d6f035dc4bf8731bfb1acaa1d6693295fecc61509a1a98fd0eaf

        • memory/1896-55-0x0000000000EF0000-0x0000000000F16000-memory.dmp

          Filesize

          152KB

        • memory/1896-56-0x0000000000020000-0x0000000000023000-memory.dmp

          Filesize

          12KB

        • memory/1896-54-0x00000000763F1000-0x00000000763F3000-memory.dmp

          Filesize

          8KB

        • memory/1896-62-0x0000000000450000-0x000000000045F000-memory.dmp

          Filesize

          60KB

        • memory/1896-85-0x0000000000EF0000-0x0000000000F16000-memory.dmp

          Filesize

          152KB