Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    25/04/2026, 02:10

General

  • Target
    2026-04-25_205d9dad0e2f439686bd13b8a986e25b_amadey_cobalt-strike_elex_hellokitty_luca-stealer_njrat_play_smoke-loader.exe
  • Size 552KB
  • Sample260425-clq4aab16w
  • SHA256 2270510b6dd97cf35a38597bb3f62e1024229c54bfad3671553fa2d6bda48a97
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: Expiro, m0yv

    Expiro aka m0yv is a multi-functional backdoor written in C++.

  • Expiro payload 5 IoCs
  • Disables taskbar notifications via registry modification
  • Executes dropped EXE 5 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 42 IoCs

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

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 6 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 34 IoCs
  • Suspicious behavior: LoadsDriver 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-04-25_205d9dad0e2f439686bd13b8a986e25b_amadey_cobalt-strike_elex_hellokitty_luca-stealer_njrat_play_smoke-loader.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-04-25_205d9dad0e2f439686bd13b8a986e25b_amadey_cobalt-strike_elex_hellokitty_luca-stealer_njrat_play_smoke-loader.exe"
    1⤵
    • 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 use of AdjustPrivilegeToken
    PID:2096
  • C:\Windows\System32\alg.exe
    C:\Windows\System32\alg.exe
    1⤵
    • Executes dropped EXE
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • System policy modification
    PID:4324
  • C:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe
    C:\Windows\system32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe
    1⤵
    • Executes dropped EXE
    PID:1992
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k NetworkService -p -s TapiSrv
    1⤵
      PID:4984
    • C:\Windows\system32\fxssvc.exe
      C:\Windows\system32\fxssvc.exe
      1⤵
      • Executes dropped EXE
      • Modifies data under HKEY_USERS
      • Suspicious use of AdjustPrivilegeToken
      PID:968
    • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
      "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
      1⤵
      • Executes dropped EXE
      PID:2100
    • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
      1⤵
      • Executes dropped EXE
      PID:3884

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          elevation_service.exe

          • Path C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
          • Size 2.6MB
          • SHA256 b1642aa114a119bb5c8b4c9fa169b1c99dbe0344d90ecf034f75d8597f82c0a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7z.exe

          • Path C:\Program Files\7-Zip\7z.exe
          • Size 941KB
          • SHA256 441354232818e565ee1f07486e8f84841b1ce983d930e32cadf8893ee19ef75f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7zFM.exe

          • Path C:\Program Files\7-Zip\7zFM.exe
          • Size 1.3MB
          • SHA256 d841400f51ee78732ca3821ce9dfd38e808aa5c1b8bda6451eca8a6a63ea0b2b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          7zG.exe

          • Path C:\Program Files\7-Zip\7zG.exe
          • Size 1.1MB
          • SHA256 997b6ac13f5ec0e42fd2e23d6265b7a934e186bd2ffcbc196250e36c1d27baae
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Uninstall.exe

          • Path C:\Program Files\7-Zip\Uninstall.exe
          • Size 406KB
          • SHA256 3c1be032d6f0f82f5d4e038e1e61b1ac7a03f6389cbf533cc48f26f6154c4ed2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          AppVShNotify.exe

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVShNotify.exe
          • Size 668KB
          • SHA256 a5c71af3a2b1fe74231387a80b200411db7512e437a2a8edc55bf07b942d29fa
          • MD5 SHA1 SHA512 SSDEEP TLSH

          IntegratedOffice.exe

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\IntegratedOffice.exe
          • Size 4.5MB
          • SHA256 27e583cdc19a761d88bc4509dc9780a30fe753e08d95f04fff398f32a29e09fd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MavInject32.exe

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe
          • Size 734KB
          • SHA256 e4c4dd8c14e734fa2ba37eb46c84079ec94ba0717918ba943755c38d90c2dde7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          OfficeC2RClient.exe

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe
          • Size 23.8MB
          • SHA256 fb36eae913df4a68b1a46fe73e2da4f44e1d5bc390312c74a0eedbc2460fa191
          • MD5 SHA1 SHA512 SSDEEP TLSH

          appvcleaner.exe

          • Path C:\Program Files\Common Files\microsoft shared\ClickToRun\appvcleaner.exe
          • Size 2.5MB
          • SHA256 82a02b5e6c7b809ef22f47fc9a4a491813242154218fd730b1fc11a8692f759c
          • MD5 SHA1 SHA512 SSDEEP TLSH

          elevation_service.exe

          • Path C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
          • Size 2.6MB
          • SHA256 c3a41c0f6b9f9d87858230a370601c988ded1362028c5a7d369f64da1f9d728f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          flhjdidc.tmp

          • Path C:\Users\Admin\AppData\Local\aacjkqcr\flhjdidc.tmp
          • Size 639KB
          • SHA256 7b9e5a1461928318865981135b423f5ad6b36f530f23a05a7c65327cc385b2a4
          • MD5 SHA1 SHA512 SSDEEP TLSH

          powershell.exe

          • Path C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          • Size 804KB
          • SHA256 03ad45da960f59c7a89c6354da796013a3cd608b6afe8823a4ee08b38eb7d4fd
          • MD5 SHA1 SHA512 SSDEEP TLSH

          DiagnosticsHub.StandardCollector.Service.exe

          • Path C:\Windows\System32\DiagSvcs\DiagnosticsHub.StandardCollector.Service.exe
          • Size 500KB
          • SHA256 020f5e3dc44309385a7b8df963d2fa8297d04d3e3c2ab524e17b516dd7fc49c8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          FXSSVC.exe

          • Path C:\Windows\System32\FXSSVC.exe
          • Size 1.0MB
          • SHA256 5bb8bd1a2a380aa6952046ccdd4958fc5ed7872996ca7351736e8d8158ee8bf6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          alg.exe

          • Path C:\Windows\System32\alg.exe
          • Size 500KB
          • SHA256 2fa61e497a4260b9e43d03aed165b248e8f56f109506e791f39c2c5d2285bca3
          • MD5 SHA1 SHA512 SSDEEP TLSH

          maintenanceservice.exe

          • Path \??\c:\program files (x86)\mozilla maintenance service\maintenanceservice.exe
          • Size 654KB
          • SHA256 3dc8058288508caaefad1e258c110af6c38f0637367cf52a398cdbfaecebf8ef
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ose.exe

          • Path \??\c:\program files\common files\microsoft shared\source engine\ose.exe
          • Size 633KB
          • SHA256 1ac06d3e8edfddb84a5e399f3045989df05efc97eeb56dcc565b5278413ea9d5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          wmpnetwk.exe

          • Path \??\c:\program files\windows media player\wmpnetwk.exe
          • Size 1.3MB
          • SHA256 73ae553707b53cece6db8c3f786a3317e634a69c6ebec128d496c6ee3d9a83f2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Agentservice.exe

          • Path \??\c:\windows\system32\Agentservice.exe
          • Size 1.5MB
          • SHA256 de20d627762e1250bf67da569abb47fd48b746ec16a351ca3be0983b8bbf3cf6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Appvclient.exe

          • Path \??\c:\windows\system32\Appvclient.exe
          • Size 1.1MB
          • SHA256 728a83054e6e81a2009ed2c6077594d23c852767dc502a42334679fae351b3ed
          • MD5 SHA1 SHA512 SSDEEP TLSH

          locator.exe

          • Path \??\c:\windows\system32\locator.exe
          • Size 420KB
          • SHA256 344058c459ca4bb7a322e62c7c25d729f8172e890dee432df288728c01339522
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msdtc.exe

          • Path \??\c:\windows\system32\msdtc.exe
          • Size 556KB
          • SHA256 8bb805f39a6f3038003206d621887a7cf6076a9e51efef40d0a16a3304528c4b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          msiexec.exe

          • Path \??\c:\windows\system32\msiexec.exe
          • Size 568KB
          • SHA256 9002d89fe471e20cad3447ba0d2917775a28dd93e5d5b412685755f9524364c1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ssh-agent.exe

          • Path \??\c:\windows\system32\openssh\ssh-agent.exe
          • Size 768KB
          • SHA256 0efc21c57dd2bde6e3570080ce97b77ad0fac080839c9672848360f5c4931378
          • MD5 SHA1 SHA512 SSDEEP TLSH

          perceptionsimulationservice.exe

          • Path \??\c:\windows\system32\perceptionsimulation\perceptionsimulationservice.exe
          • Size 624KB
          • SHA256 5ae57d505361ae4fbcc450bae99a506f0943e9bfb047b344cc43a7f15221b22f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          searchindexer.exe

          • Path \??\c:\windows\system32\searchindexer.exe
          • Size 1.3MB
          • SHA256 8c496e3a64e98e0f86ccbc58d5d8aa9eb77bdbb03c637d914477a36b079ac54f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          sensordataservice.exe

          • Path \??\c:\windows\system32\sensordataservice.exe
          • Size 1.5MB
          • SHA256 b6c766bdd467d34b7e2f771a6404a926841489a6539f4dd9e25922cb76115ab6
          • MD5 SHA1 SHA512 SSDEEP TLSH

          sgrmbroker.exe

          • Path \??\c:\windows\system32\sgrmbroker.exe
          • Size 780KB
          • SHA256 f3c9c50114d60b9e51a5f3b9bd1d3b0178578c108a676bf760c90bbbedd97aac
          • MD5 SHA1 SHA512 SSDEEP TLSH

          snmptrap.exe

          • Path \??\c:\windows\system32\snmptrap.exe
          • Size 428KB
          • SHA256 a2939fd03e6dba278609594f28c2ea611957d3965f7f396caa8fde626283dd77
          • MD5 SHA1 SHA512 SSDEEP TLSH

          spectrum.exe

          • Path \??\c:\windows\system32\spectrum.exe
          • Size 1.1MB
          • SHA256 e15a86e826405f504b51027c84a70785bb58a2859e52549ef01c8e284b732c72
          • MD5 SHA1 SHA512 SSDEEP TLSH

          tieringengineservice.exe

          • Path \??\c:\windows\system32\tieringengineservice.exe
          • Size 728KB
          • SHA256 5a5af187f14403ca741a66bf9267fc1225e60b3a6bf774c7f6f0738854393999
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vds.exe

          • Path \??\c:\windows\system32\vds.exe
          • Size 1.1MB
          • SHA256 e2b0ceacbabca507f9a5f2afa27402cb41990a6b02f5fac8cb5c6df88858a595
          • MD5 SHA1 SHA512 SSDEEP TLSH

          vssvc.exe

          • Path \??\c:\windows\system32\vssvc.exe
          • Size 1.8MB
          • SHA256 992ccbf1dcd44c15ab7a3153ab099a8fb0fb476ba8d57134b94bbf237171ba6b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          wmiApsrv.exe

          • Path \??\c:\windows\system32\wbem\wmiApsrv.exe
          • Size 592KB
          • SHA256 68137b6f2f447d09dc9fecf081ff8a8428972e8b6703954ff1ef20d99eb96980
          • MD5 SHA1 SHA512 SSDEEP TLSH

          wbengine.exe

          • Path \??\c:\windows\system32\wbengine.exe
          • Size 1.9MB
          • SHA256 7dbef76f2f34b8d1e656f8d3e30c1f717a6da7586b1a3d32c908546ce3fce76b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          perfhost.exe

          • Path \??\c:\windows\syswow64\perfhost.exe
          • Size 412KB
          • SHA256 d33bbee23749a90515de78921c9db914df6bf7d774bb17ecdbb6b44d4516f499
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/2096-0-0x0000000000F4E000-0x0000000000F7F000-memory.dmp

          memory/2096-5-0x0000000000EC0000-0x0000000000F7F000-memory.dmp

          memory/2096-4-0x0000000000EC0000-0x0000000000F7F000-memory.dmp

          memory/2096-2-0x0000000000F4E000-0x0000000000F7F000-memory.dmp

          memory/2096-1-0x0000000000EC0000-0x0000000000F7F000-memory.dmp

          memory/4324-50-0x00007FF6B0C10000-0x00007FF6B0CE2000-memory.dmp