Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    25/04/2026, 03:05

General

  • Target
    2026-04-25_b6df13aeaf8595a97872555a95a13768_elex_stop_yuner.exe
  • Size 512KB
  • Sample260425-dlln8sdy21
  • SHA256 b8e10ca4de61e5e8939cf3fa67a9f612829fe854987377b5fa1197b259ff8998
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Sohanad, Svich

    Sohanad is a worm written in C++.

  • Detects Sohanad worm 9 IoCs
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visibility of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 3 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 3 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 10 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Drops file in Windows directory 19 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 20 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-25_b6df13aeaf8595a97872555a95a13768_elex_stop_yuner.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-25_b6df13aeaf8595a97872555a95a13768_elex_stop_yuner.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3496
    • C:\Windows\SysWOW64\brolsbmzfo.exe
      brolsbmzfo.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visibility of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4704
      • C:\Windows\SysWOW64\ywmcxrfp.exe
        C:\Windows\system32\ywmcxrfp.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1420
    • C:\Windows\SysWOW64\yseudjrijpkymoc.exe
      yseudjrijpkymoc.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1300
    • C:\Windows\SysWOW64\ywmcxrfp.exe
      ywmcxrfp.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:744
    • C:\Windows\SysWOW64\vuazvddfmuevc.exe
      vuazvddfmuevc.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4328
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
      2⤵
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4000

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        PROTTPLN.DOC.exe

        • Path C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe
        • Size 512KB
        • SHA256 23699c6e953ed763e6ea22dd059a272e9402f4791de58aedb476922dad94fe06
        • MD5 SHA1 SHA512 SSDEEP TLSH

        PROTTPLV.DOC.exe

        • Path C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe
        • Size 512KB
        • SHA256 93b34d34e1622fa9dd05cc89ce5a57b36129c670c320e78a924a7c7097c0b264
        • MD5 SHA1 SHA512 SSDEEP TLSH

        iso690.xsl

        • Path C:\Users\Admin\AppData\Local\Temp\TCD94F6.tmp\iso690.xsl
        • Size 263KB
        • SHA256 3f925e0cc1542f09de1f99060899eafb0042bb9682507c907173c392115a44b5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        CompareRequest.doc.exe

        • Path C:\Users\Admin\AppData\Roaming\InitializeConnect\CompareRequest.doc.exe
        • Size 512KB
        • SHA256 f6fd5dc710df2da4c595f41e10b5cabcb1821d5df3acb927b2b77769b431fb50
        • MD5 SHA1 SHA512 SSDEEP TLSH

        index.dat

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat
        • Size 361B
        • SHA256 fe97be00ce2828d44e06d4edde45ffffc996807c13befea65e8327818f26078e
        • MD5 SHA1 SHA512 TLSH

        fb3b0dbfee58fac8.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
        • Size 3KB
        • SHA256 1689e9fce665b799eca154522efb24b3684c99b9af35b8afae9e6d7fe16f3f5a
        • MD5 SHA1 SHA512 TLSH

        fb3b0dbfee58fac8.customDestinations-ms

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms
        • Size 3KB
        • SHA256 5c6dd25f01522d1f4164bd2f9fe0660358d6ee86bb39abece0da7387345e809d
        • MD5 SHA1 SHA512 TLSH

        brolsbmzfo.exe

        • Path C:\Windows\SysWOW64\brolsbmzfo.exe
        • Size 512KB
        • SHA256 d8504a63b7b7c4a766bc8410147a74c02f97b70d0f9a4127452026ce745f087a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        vuazvddfmuevc.exe

        • Path C:\Windows\SysWOW64\vuazvddfmuevc.exe
        • Size 512KB
        • SHA256 1bc93e6d0f80d89a867cb34b836384f4e0589a227847944eebe7a626322b2bc3
        • MD5 SHA1 SHA512 SSDEEP TLSH

        yseudjrijpkymoc.exe

        • Path C:\Windows\SysWOW64\yseudjrijpkymoc.exe
        • Size 512KB
        • SHA256 ee3162fa322afd7f595377b3a783d993f9e7aa8988ebe5ecd732ae9a39075c33
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ywmcxrfp.exe

        • Path C:\Windows\SysWOW64\ywmcxrfp.exe
        • Size 512KB
        • SHA256 971e42d0da79c193b48f3c9d253465f79095e1f8c19b52e8696e6a78ba371c8a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        mydoc.rtf

        • Path C:\Windows\mydoc.rtf
        • Size 223B
        • SHA256 85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2
        • MD5 SHA1 SHA512 TLSH

        MsoIrmProtector.doc.exe

        • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
        • Size 512KB
        • SHA256 8ed1d50c6315624cd19f9e5b9bf042e9db9dfb12c02f9f4ced9d6510fb6893b4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MsoIrmProtector.doc.exe

        • Path \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe
        • Size 512KB
        • SHA256 9976b6e5f0eaa9b75d0d8437d9f0fb376ef4c98a26228daa1c15a1e16d8f05ef
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/744-74-0x0000000000180000-0x00000000001C5000-memory.dmp

        memory/744-266-0x0000000000180000-0x00000000001C5000-memory.dmp

        memory/1300-73-0x0000000000160000-0x00000000001A5000-memory.dmp

        memory/1420-76-0x0000000000170000-0x00000000001B5000-memory.dmp

        memory/1420-265-0x0000000000170000-0x00000000001B5000-memory.dmp

        memory/3496-39-0x0000000000920000-0x0000000000965000-memory.dmp

        memory/3496-0-0x0000000000400000-0x0000000000496000-memory.dmp

        memory/4000-40-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-41-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-43-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-42-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-46-0x00007FFAD8ED0000-0x00007FFAD8EE0000-memory.dmp

        memory/4000-44-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-45-0x00007FFAD8ED0000-0x00007FFAD8EE0000-memory.dmp

        memory/4000-287-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-288-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-290-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4000-289-0x00007FFADB6D0000-0x00007FFADB6E0000-memory.dmp

        memory/4328-75-0x00000000008A0000-0x00000000008E5000-memory.dmp

        memory/4704-72-0x0000000000E20000-0x0000000000E65000-memory.dmp