Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/01/2023, 12:21

General

  • Target
    916D53E09DA4C910F04585026F5AAB7410C391E30C0D5.exe
  • Size 4.1MB
  • Sample230129-pjba9sef76
  • SHA256 916d53e09da4c910f04585026f5aab7410c391e30c0d560159ad16e936272eeb
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Signatures

  • RMS

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Loads dropped DLL 11 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 12 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\916D53E09DA4C910F04585026F5AAB7410C391E30C0D5.exe
    "C:\Users\Admin\AppData\Local\Temp\916D53E09DA4C910F04585026F5AAB7410C391E30C0D5.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1116
    • C:\Program Files\OSM\osmserv.exe
      "C:\Program Files\OSM\osmserv.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1648
      • C:\Program Files\OSM\osmserv.exe
        "C:\Program Files\OSM\osmserv.exe" -second
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:3076
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c SchTasks /create /f /XML %temp%\Log360.xml /TN \microsoft\windows\defrag\scheduleddefrag && schtasks /Change /TN \microsoft\windows\defrag\scheduleddefrag /ENABLE && schtasks /run /TN \microsoft\windows\defrag\scheduleddefrag
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4772
      • C:\Windows\SysWOW64\schtasks.exe
        SchTasks /create /f /XML C:\Users\Admin\AppData\Local\Temp\Log360.xml /TN \microsoft\windows\defrag\scheduleddefrag
        3⤵
        • Creates scheduled task(s)
        PID:1600
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /Change /TN \microsoft\windows\defrag\scheduleddefrag /ENABLE
        3⤵
          PID:4644
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /run /TN \microsoft\windows\defrag\scheduleddefrag
          3⤵
            PID:4184
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
        1⤵
        • Suspicious use of NtCreateUserProcessOtherParentProcess
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4312
      • C:\Program Files\OSM\osmserv.exe
        "C:\Program Files\OSM\osmserv.exe"
        1⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:848

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            libeay32.dll

            • Path C:\Program Files\OSM\libeay32.dll
            • Size 1.3MB
            • SHA256 a8124500cae0aba3411428c2c6df2762ea11cc11c312abed415d3f3667eb6884
            • MD5 SHA1 SHA512 SSDEEP

            libeay32.dll

            • Path C:\Program Files\OSM\libeay32.dll
            • Size 1.3MB
            • SHA256 a8124500cae0aba3411428c2c6df2762ea11cc11c312abed415d3f3667eb6884
            • MD5 SHA1 SHA512 SSDEEP

            libeay32.dll

            • Path C:\Program Files\OSM\libeay32.dll
            • Size 1.3MB
            • SHA256 a8124500cae0aba3411428c2c6df2762ea11cc11c312abed415d3f3667eb6884
            • MD5 SHA1 SHA512 SSDEEP

            libeay32.dll

            • Path C:\Program Files\OSM\libeay32.dll
            • Size 1.3MB
            • SHA256 a8124500cae0aba3411428c2c6df2762ea11cc11c312abed415d3f3667eb6884
            • MD5 SHA1 SHA512 SSDEEP

            osmserv.exe

            • Path C:\Program Files\OSM\osmserv.exe
            • Size 11.2MB
            • SHA256 87846d788c3a189eed07822136e23d63413c4da216a08e1ea0e1cfadb54093fd
            • MD5 SHA1 SHA512 SSDEEP

            osmserv.exe

            • Path C:\Program Files\OSM\osmserv.exe
            • Size 11.2MB
            • SHA256 87846d788c3a189eed07822136e23d63413c4da216a08e1ea0e1cfadb54093fd
            • MD5 SHA1 SHA512 SSDEEP

            osmserv.exe

            • Path C:\Program Files\OSM\osmserv.exe
            • Size 11.2MB
            • SHA256 87846d788c3a189eed07822136e23d63413c4da216a08e1ea0e1cfadb54093fd
            • MD5 SHA1 SHA512 SSDEEP

            osmserv.exe

            • Path C:\Program Files\OSM\osmserv.exe
            • Size 11.2MB
            • SHA256 87846d788c3a189eed07822136e23d63413c4da216a08e1ea0e1cfadb54093fd
            • MD5 SHA1 SHA512 SSDEEP

            ssleay32.dll

            • Path C:\Program Files\OSM\ssleay32.dll
            • Size 337KB
            • SHA256 1f4b3efc919af1106f348662ee9ad95ab019058ff502e3d68e1b5f7abff91b56
            • MD5 SHA1 SHA512 SSDEEP

            ssleay32.dll

            • Path C:\Program Files\OSM\ssleay32.dll
            • Size 337KB
            • SHA256 1f4b3efc919af1106f348662ee9ad95ab019058ff502e3d68e1b5f7abff91b56
            • MD5 SHA1 SHA512 SSDEEP

            ssleay32.dll

            • Path C:\Program Files\OSM\ssleay32.dll
            • Size 337KB
            • SHA256 1f4b3efc919af1106f348662ee9ad95ab019058ff502e3d68e1b5f7abff91b56
            • MD5 SHA1 SHA512 SSDEEP

            ssleay32.dll

            • Path C:\Program Files\OSM\ssleay32.dll
            • Size 337KB
            • SHA256 1f4b3efc919af1106f348662ee9ad95ab019058ff502e3d68e1b5f7abff91b56
            • MD5 SHA1 SHA512 SSDEEP

            Log360.xml

            • Path C:\Users\Admin\AppData\Local\Temp\Log360.xml
            • Size 1KB
            • SHA256 1235422a8be537021b5688cd129b60fc145f33af7c46e35ba2b59e77cd48352d
            • MD5 SHA1 SHA512

            NSISList.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsr7F96.tmp\NSISList.dll
            • Size 105KB
            • SHA256 df3621f83e9d11be45e0e617b899c4ab0241f60ed56494e892dc449482058402
            • MD5 SHA1 SHA512 SSDEEP

            NSISList.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsr7F96.tmp\NSISList.dll
            • Size 105KB
            • SHA256 df3621f83e9d11be45e0e617b899c4ab0241f60ed56494e892dc449482058402
            • MD5 SHA1 SHA512 SSDEEP

            System.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsr7F96.tmp\System.dll
            • Size 12KB
            • SHA256 6950991102462d84fdc0e3b0ae30c95af8c192f77ce3d78e8d54e6b22f7c09ba
            • MD5 SHA1 SHA512 SSDEEP

            nsExec.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsr7F96.tmp\nsExec.dll
            • Size 7KB
            • SHA256 1f18f4126124b0551f3dbcd0fec7f34026f930ca509f04435657cedc32ae8c47
            • MD5 SHA1 SHA512 SSDEEP

            registry.dll

            • Path C:\Users\Admin\AppData\Local\Temp\nsr7F96.tmp\registry.dll
            • Size 24KB
            • SHA256 0b25b20f26de5d5bd795f934c70447112b4981343fcb2dfab3374a4018d28c2d
            • MD5 SHA1 SHA512 SSDEEP

            memory/1116-135-0x0000000003030000-0x0000000003054000-memory.dmp