Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    09/09/2024, 01:31

General

  • Target
    60ec502046b8c0d787ad3b5e431c9126.exe
  • Size 16.4MB
  • Sample240909-bxdrnavfqr
  • SHA256 0c41e02ef1c8837307ffbfe5e3c97116808ced2214d34a5517ac732bc2c3baa7
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • RMS

    Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.

  • UPX packed file 2 IoCs

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

  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Drops file in System32 directory 8 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 5 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 41 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\60ec502046b8c0d787ad3b5e431c9126.exe
    "C:\Users\Admin\AppData\Local\Temp\60ec502046b8c0d787ad3b5e431c9126.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rfusclient.exe
      "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rfusclient.exe" -run_agent
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1516
      • C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rutserv.exe
        "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rutserv.exe" -run_agent
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:2816
        • C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rutserv.exe
          "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rutserv.exe" -run_agent -second
          4⤵
          • Drops file in System32 directory
          • Executes dropped EXE
          • Loads dropped DLL
          • System Location Discovery: System Language Discovery
          • Modifies data under HKEY_USERS
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3048
          • C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rfusclient.exe
            "C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rfusclient.exe" /tray /user
            5⤵
            • Checks computer location settings
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:640

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        EULA.rtf

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\EULA.rtf
        • Size 69KB
        • SHA256 b137e38facdd1cdfc9730856675f4b531366d7af54b605209cb2158a58deb1ef
        • MD5 SHA1 SHA512 SSDEEP

        branding.ini

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\branding.ini
        • Size 216B
        • SHA256 cbb3e1eb3714776ccfbfdc8f8fe66a6db2880f39cdd9ab53fb6ca6d86b98fb07
        • MD5 SHA1 SHA512

        eventmsg.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\eventmsg.dll
        • Size 51KB
        • SHA256 ccd5b9e5947f956e880bd2285a6091dc9f1ee9b0eb8df627ec4e72b451a1c745
        • MD5 SHA1 SHA512 SSDEEP

        libeay32.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\libeay32.dll
        • Size 1.3MB
        • SHA256 dfc847405be60c29e86e3e3222e7f63c1ff584727d87d3c35c25c4893e19fda0
        • MD5 SHA1 SHA512 SSDEEP

        logo.png

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\logo.png
        • Size 57KB
        • SHA256 b022cea1a3caeb02da1334f5f1ac7afdb3ae4fca1cd4ccd9ae106a0c9457613b
        • MD5 SHA1 SHA512 SSDEEP

        rfusclient.exe

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rfusclient.exe
        • Size 11.2MB
        • SHA256 41ea3c0b8421ebdea1eb6a508a38e120b1fbb38b9a2e1379deabc5a167a87408
        • MD5 SHA1 SHA512 SSDEEP

        rutserv.exe

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\rutserv.exe
        • Size 18.0MB
        • SHA256 ce5ba1e5d70d95d52b89a1b8278ff8dd4d1e25c38c90ca202b43bdc014795d78
        • MD5 SHA1 SHA512 SSDEEP

        settings.dat

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\settings.dat
        • Size 8KB
        • SHA256 202fc5f1f030a19911f9405629f1d3ac082c2742b4b49a60e1b5a59d869fee4b
        • MD5 SHA1 SHA512 SSDEEP

        ssleay32.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\ssleay32.dll
        • Size 337KB
        • SHA256 303c78aba3b776472c245f17020f9aa5a53f09a6f6c1e4f34b8e18e33906b5ee
        • MD5 SHA1 SHA512 SSDEEP

        vp8decoder.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\vp8decoder.dll
        • Size 380KB
        • SHA256 36993fc3312ce757c8adeca3e5969e1fcc11d5b51b12c458ba8d54d73b64d4e7
        • MD5 SHA1 SHA512 SSDEEP

        vp8encoder.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\vp8encoder.dll
        • Size 1.6MB
        • SHA256 0961d83cb25e1a50d5c0ec2f9fb0d17f2504dae0b22a865f6e1ea8e987e1c6fa
        • MD5 SHA1 SHA512 SSDEEP

        webmmux.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\webmmux.dll
        • Size 260KB
        • SHA256 bd520007864b44e0bda7a466384d12c3c3f328326cf3549ba1853a58ccdbc99d
        • MD5 SHA1 SHA512 SSDEEP

        webmvorbisdecoder.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\webmvorbisdecoder.dll
        • Size 365KB
        • SHA256 f3465ce8a23db5e8228eed5a60a6f7a096d1a9adf3012c39bc6d81d4e57e8e9e
        • MD5 SHA1 SHA512 SSDEEP

        webmvorbisencoder.dll

        • Path C:\Users\Admin\AppData\Roaming\Remote Utilities Agent\70020\A5110FEF53\webmvorbisencoder.dll
        • Size 860KB
        • SHA256 83e1c1eb55bfd0f2d85d41c1e4dee65046b064ccb263ec7f412a5f329c75cfd1
        • MD5 SHA1 SHA512 SSDEEP

        memory/640-122-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-128-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-157-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-139-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-131-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-142-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-154-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-111-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-151-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-136-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-148-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-125-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-145-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/640-160-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/1516-86-0x0000000000400000-0x0000000000FCE000-memory.dmp

        memory/1516-83-0x0000000003340000-0x0000000003341000-memory.dmp

        memory/2816-92-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-124-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-150-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-135-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-141-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-130-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-144-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-127-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-147-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-159-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-138-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-121-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-153-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-110-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/3048-156-0x0000000000400000-0x00000000016BA000-memory.dmp

        memory/5056-81-0x0000000000400000-0x0000000002843000-memory.dmp

        memory/5056-1-0x0000000002F40000-0x0000000002F41000-memory.dmp

        memory/5056-0-0x0000000000400000-0x0000000002843000-memory.dmp