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Analysis

  • max time kernel
    152s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    29/10/2022, 16:43

General

  • Target

    b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd.exe

  • Size

    255KB

  • MD5

    83c2b73606debabb6f5b481d5df39bd5

  • SHA1

    6de359d76cf3fcfaeb01bb048003e676e97e44fa

  • SHA256

    b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd

  • SHA512

    943ec96e5c15afd5fdcaf1e169a890ef7c4897649fc9150c98dd736473301b76d21952e149fcdc8ff644e94ca0fad07f4af2d306a5ae01e3650987137e08e085

  • SSDEEP

    3072:MMDb50WrZa8jCgae5+VQkGdUQFDxePZ2SBaQJXkNRtXlNGKaUIQW/qlQBG3mmTJR:1xlZam+akqx6YQJXcNlEHUIQeE3mmBIs

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Executes dropped EXE 6 IoCs
  • UPX packed file 32 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
  • AutoIT Executable 14 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 21 IoCs
  • Suspicious use of SendNotifyMessage 21 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd.exe
    "C:\Users\Admin\AppData\Local\Temp\b670819af5334319fb9c2d7b2ee66b167f9bda2877d204e7ff51ede308915ccd.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1536
    • C:\Windows\SysWOW64\jrrbeaxobz.exe
      jrrbeaxobz.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1064
      • C:\Windows\SysWOW64\elqxphel.exe
        C:\Windows\system32\elqxphel.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1292
    • C:\Windows\SysWOW64\ocydoskvegybgzl.exe
      ocydoskvegybgzl.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2008
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c rlstwxsvjlhvc.exe
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1984
        • C:\Windows\SysWOW64\rlstwxsvjlhvc.exe
          rlstwxsvjlhvc.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          PID:784
    • C:\Windows\SysWOW64\elqxphel.exe
      elqxphel.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2032
    • C:\Windows\SysWOW64\rlstwxsvjlhvc.exe
      rlstwxsvjlhvc.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1164
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:564
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:1116

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe

      Filesize

      255KB

      MD5

      c71acdf31b2b3003cfb518f8ae2454f8

      SHA1

      e39f0a7e7189626073de32a8f4873a6699fd2b19

      SHA256

      ea770742fad9380d91c38aed53d01ab5c7b4c5a24eaf919467571b7d74905246

      SHA512

      b5de373d5da4587dd52395376d81ed6cddf5c3f5f338cb7ca053f0f4a8d030671b5f602a29e080f6f53eb25b06011ede058e10a5b0e4dfaf8ae43199ac6fac66

    • C:\Users\Admin\Documents\ExpandOpen.doc.exe

      Filesize

      255KB

      MD5

      76799a249b73d2b1bc4b3a38c88d63a6

      SHA1

      a631135d3565fdebcab96da7fb2c064ba0593ebc

      SHA256

      082f859fdac421b23ae96d65cb357568dbd1e0a0c72c0a0f7f5fe6ef774b8bc4

      SHA512

      e5d73535d0107ac45ba3c707947d24867fa6290c94e1181071936ad368e1be0a07ff7f370fc75b997aa4b35346c42c4e6acccd9f530a957cfdc7904b41cde4bb

    • C:\Windows\SysWOW64\elqxphel.exe

      Filesize

      255KB

      MD5

      1b84b052e6cc40ba55c0debae9b6a246

      SHA1

      21f722bf35b09005081b9c5df0c799260d4d472f

      SHA256

      1d49be8d302eb1b24aa697d0879f629bcf02e34eec9f67b8ea955780d2b76c88

      SHA512

      be3aad9248eecbd307f51e88964feac918f37339b9e9ee8757e803de2a793de384d7df7d93f6c02972f232c6c6363bd124c484965310c54e1d942310fadb05fd

    • C:\Windows\SysWOW64\elqxphel.exe

      Filesize

      255KB

      MD5

      1b84b052e6cc40ba55c0debae9b6a246

      SHA1

      21f722bf35b09005081b9c5df0c799260d4d472f

      SHA256

      1d49be8d302eb1b24aa697d0879f629bcf02e34eec9f67b8ea955780d2b76c88

      SHA512

      be3aad9248eecbd307f51e88964feac918f37339b9e9ee8757e803de2a793de384d7df7d93f6c02972f232c6c6363bd124c484965310c54e1d942310fadb05fd

    • C:\Windows\SysWOW64\elqxphel.exe

      Filesize

      255KB

      MD5

      1b84b052e6cc40ba55c0debae9b6a246

      SHA1

      21f722bf35b09005081b9c5df0c799260d4d472f

      SHA256

      1d49be8d302eb1b24aa697d0879f629bcf02e34eec9f67b8ea955780d2b76c88

      SHA512

      be3aad9248eecbd307f51e88964feac918f37339b9e9ee8757e803de2a793de384d7df7d93f6c02972f232c6c6363bd124c484965310c54e1d942310fadb05fd

    • C:\Windows\SysWOW64\jrrbeaxobz.exe

      Filesize

      255KB

      MD5

      f79d7af86b5024415c7fbf22849b200d

      SHA1

      5d420ffedeaeeb59664e71ac4275f3c31ea6f3c2

      SHA256

      2ebfff883c345fe062b1a1d36055e00236cb07c96df6f7153a57162ae2b237c1

      SHA512

      a0b413ad0f9cc01ad730260d34556f746c994ba59f344595efd2e8e90a973b200499d4ec8da6740dd35c3da418c16e1962a56c908d083924ccd754eb4b225526

    • C:\Windows\SysWOW64\jrrbeaxobz.exe

      Filesize

      255KB

      MD5

      f79d7af86b5024415c7fbf22849b200d

      SHA1

      5d420ffedeaeeb59664e71ac4275f3c31ea6f3c2

      SHA256

      2ebfff883c345fe062b1a1d36055e00236cb07c96df6f7153a57162ae2b237c1

      SHA512

      a0b413ad0f9cc01ad730260d34556f746c994ba59f344595efd2e8e90a973b200499d4ec8da6740dd35c3da418c16e1962a56c908d083924ccd754eb4b225526

    • C:\Windows\SysWOW64\ocydoskvegybgzl.exe

      Filesize

      255KB

      MD5

      324347b787d526d1b0bcf15cfc598415

      SHA1

      b4815ea585048d981712abaa363680b3ad265107

      SHA256

      fdc294c60445c9562053f074491010fe7a3b77f098e99c57426e6b70bc990577

      SHA512

      fbf795b7114819b839304e96591139501e2d0fbe6e0b635b5e955beec967fd79ff7b794c6867d695c6f8f789ecec8f1d6a5e2607cb6a2b0a617b7b61abf4dcc5

    • C:\Windows\SysWOW64\ocydoskvegybgzl.exe

      Filesize

      255KB

      MD5

      324347b787d526d1b0bcf15cfc598415

      SHA1

      b4815ea585048d981712abaa363680b3ad265107

      SHA256

      fdc294c60445c9562053f074491010fe7a3b77f098e99c57426e6b70bc990577

      SHA512

      fbf795b7114819b839304e96591139501e2d0fbe6e0b635b5e955beec967fd79ff7b794c6867d695c6f8f789ecec8f1d6a5e2607cb6a2b0a617b7b61abf4dcc5

    • C:\Windows\SysWOW64\rlstwxsvjlhvc.exe

      Filesize

      255KB

      MD5

      09dcdeeff5287b9ec6d88d6a0c2e20bd

      SHA1

      03ec9da457fff0e5636388e899302927c05d2fc1

      SHA256

      926092b68d0a53441969740bb3256b0d03c8ae7e9900ae4d472954ea3cb11e71

      SHA512

      d58ee098a22d97ac911ede6667e7de8e4219ed9f6fb9177462ffb6a84bdbac5b841db1a51d6695ec52f620d8c36489e9cd4be66131d7f9ab29ff988f95554d3f

    • C:\Windows\SysWOW64\rlstwxsvjlhvc.exe

      Filesize

      255KB

      MD5

      09dcdeeff5287b9ec6d88d6a0c2e20bd

      SHA1

      03ec9da457fff0e5636388e899302927c05d2fc1

      SHA256

      926092b68d0a53441969740bb3256b0d03c8ae7e9900ae4d472954ea3cb11e71

      SHA512

      d58ee098a22d97ac911ede6667e7de8e4219ed9f6fb9177462ffb6a84bdbac5b841db1a51d6695ec52f620d8c36489e9cd4be66131d7f9ab29ff988f95554d3f

    • C:\Windows\SysWOW64\rlstwxsvjlhvc.exe

      Filesize

      255KB

      MD5

      09dcdeeff5287b9ec6d88d6a0c2e20bd

      SHA1

      03ec9da457fff0e5636388e899302927c05d2fc1

      SHA256

      926092b68d0a53441969740bb3256b0d03c8ae7e9900ae4d472954ea3cb11e71

      SHA512

      d58ee098a22d97ac911ede6667e7de8e4219ed9f6fb9177462ffb6a84bdbac5b841db1a51d6695ec52f620d8c36489e9cd4be66131d7f9ab29ff988f95554d3f

    • C:\Windows\mydoc.rtf

      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

    • \Windows\SysWOW64\elqxphel.exe

      Filesize

      255KB

      MD5

      1b84b052e6cc40ba55c0debae9b6a246

      SHA1

      21f722bf35b09005081b9c5df0c799260d4d472f

      SHA256

      1d49be8d302eb1b24aa697d0879f629bcf02e34eec9f67b8ea955780d2b76c88

      SHA512

      be3aad9248eecbd307f51e88964feac918f37339b9e9ee8757e803de2a793de384d7df7d93f6c02972f232c6c6363bd124c484965310c54e1d942310fadb05fd

    • \Windows\SysWOW64\elqxphel.exe

      Filesize

      255KB

      MD5

      1b84b052e6cc40ba55c0debae9b6a246

      SHA1

      21f722bf35b09005081b9c5df0c799260d4d472f

      SHA256

      1d49be8d302eb1b24aa697d0879f629bcf02e34eec9f67b8ea955780d2b76c88

      SHA512

      be3aad9248eecbd307f51e88964feac918f37339b9e9ee8757e803de2a793de384d7df7d93f6c02972f232c6c6363bd124c484965310c54e1d942310fadb05fd

    • \Windows\SysWOW64\jrrbeaxobz.exe

      Filesize

      255KB

      MD5

      f79d7af86b5024415c7fbf22849b200d

      SHA1

      5d420ffedeaeeb59664e71ac4275f3c31ea6f3c2

      SHA256

      2ebfff883c345fe062b1a1d36055e00236cb07c96df6f7153a57162ae2b237c1

      SHA512

      a0b413ad0f9cc01ad730260d34556f746c994ba59f344595efd2e8e90a973b200499d4ec8da6740dd35c3da418c16e1962a56c908d083924ccd754eb4b225526

    • \Windows\SysWOW64\ocydoskvegybgzl.exe

      Filesize

      255KB

      MD5

      324347b787d526d1b0bcf15cfc598415

      SHA1

      b4815ea585048d981712abaa363680b3ad265107

      SHA256

      fdc294c60445c9562053f074491010fe7a3b77f098e99c57426e6b70bc990577

      SHA512

      fbf795b7114819b839304e96591139501e2d0fbe6e0b635b5e955beec967fd79ff7b794c6867d695c6f8f789ecec8f1d6a5e2607cb6a2b0a617b7b61abf4dcc5

    • \Windows\SysWOW64\rlstwxsvjlhvc.exe

      Filesize

      255KB

      MD5

      09dcdeeff5287b9ec6d88d6a0c2e20bd

      SHA1

      03ec9da457fff0e5636388e899302927c05d2fc1

      SHA256

      926092b68d0a53441969740bb3256b0d03c8ae7e9900ae4d472954ea3cb11e71

      SHA512

      d58ee098a22d97ac911ede6667e7de8e4219ed9f6fb9177462ffb6a84bdbac5b841db1a51d6695ec52f620d8c36489e9cd4be66131d7f9ab29ff988f95554d3f

    • \Windows\SysWOW64\rlstwxsvjlhvc.exe

      Filesize

      255KB

      MD5

      09dcdeeff5287b9ec6d88d6a0c2e20bd

      SHA1

      03ec9da457fff0e5636388e899302927c05d2fc1

      SHA256

      926092b68d0a53441969740bb3256b0d03c8ae7e9900ae4d472954ea3cb11e71

      SHA512

      d58ee098a22d97ac911ede6667e7de8e4219ed9f6fb9177462ffb6a84bdbac5b841db1a51d6695ec52f620d8c36489e9cd4be66131d7f9ab29ff988f95554d3f

    • memory/564-106-0x0000000071A7D000-0x0000000071A88000-memory.dmp

      Filesize

      44KB

    • memory/564-112-0x0000000071A7D000-0x0000000071A88000-memory.dmp

      Filesize

      44KB

    • memory/564-111-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/564-98-0x0000000071A7D000-0x0000000071A88000-memory.dmp

      Filesize

      44KB

    • memory/564-96-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

    • memory/564-95-0x0000000070A91000-0x0000000070A93000-memory.dmp

      Filesize

      8KB

    • memory/564-94-0x0000000073011000-0x0000000073014000-memory.dmp

      Filesize

      12KB

    • memory/784-105-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/784-91-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1064-100-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1064-86-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1116-110-0x000007FEFC521000-0x000007FEFC523000-memory.dmp

      Filesize

      8KB

    • memory/1164-89-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1164-103-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1292-90-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1292-104-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1536-85-0x0000000003060000-0x0000000003100000-memory.dmp

      Filesize

      640KB

    • memory/1536-84-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/1536-54-0x0000000076871000-0x0000000076873000-memory.dmp

      Filesize

      8KB

    • memory/1536-93-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2008-101-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2008-87-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2032-88-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

    • memory/2032-102-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB