Analysis

  • max time kernel
    151s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    24-05-2022 21:44

General

  • Target

    03ecfa9e62c6c03568209dcb2976354c0957da79f77bcf1368478c366042cd4f.exe

  • Size

    6.2MB

  • MD5

    24e11f360833c184ac76cde7cc727b0e

  • SHA1

    88438fab6c4a4120c1e09c8abe876ed4108c6906

  • SHA256

    03ecfa9e62c6c03568209dcb2976354c0957da79f77bcf1368478c366042cd4f

  • SHA512

    d2d25c1c5d3be123006efb50fb802325004287b0e1aeea7fe656fc6b8d61760d5b257a4460f1b24b410334a61c2a405f36ce6c65f3e93319c763e244f9d6f87e

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • RMS

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

  • Executes dropped EXE 7 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 13 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\03ecfa9e62c6c03568209dcb2976354c0957da79f77bcf1368478c366042cd4f.exe
    "C:\Users\Admin\AppData\Local\Temp\03ecfa9e62c6c03568209dcb2976354c0957da79f77bcf1368478c366042cd4f.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4656
    • C:\Windows\System64\1systemsmss.exe
      "C:\Windows\System64\1systemsmss.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:3592
      • C:\Windows\SysWOW64\regedit.exe
        "C:\Windows\System32\regedit.exe" /s "C:\Windows\Zont911\Regedit.reg"
        3⤵
        • Runs .reg file with regedit
        PID:4324
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Windows\Zont911\Tupe.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3764
        • C:\Windows\SysWOW64\chcp.com
          Chcp 1251
          4⤵
            PID:3664
          • C:\Windows\System64\svnhost.exe
            "C:\Windows\System64\svnhost.exe" /silentinstall
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3632
          • C:\Windows\System64\svnhost.exe
            "C:\Windows\System64\svnhost.exe" /firewall
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:2588
          • C:\Windows\System64\svnhost.exe
            "C:\Windows\System64\svnhost.exe" /start
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1812
    • C:\Windows\System64\svnhost.exe
      C:\Windows\System64\svnhost.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:404
      • C:\Windows\System64\systemsmss.exe
        C:\Windows\System64\systemsmss.exe /tray
        2⤵
        • Executes dropped EXE
        PID:4740
      • C:\Windows\System64\systemsmss.exe
        C:\Windows\System64\systemsmss.exe
        2⤵
        • Executes dropped EXE
        PID:2916
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k appmodel -p -s camsvc
      1⤵
        PID:4532

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Windows\System64\1systemsmss.exe

        Filesize

        6.2MB

        MD5

        24e11f360833c184ac76cde7cc727b0e

        SHA1

        88438fab6c4a4120c1e09c8abe876ed4108c6906

        SHA256

        03ecfa9e62c6c03568209dcb2976354c0957da79f77bcf1368478c366042cd4f

        SHA512

        d2d25c1c5d3be123006efb50fb802325004287b0e1aeea7fe656fc6b8d61760d5b257a4460f1b24b410334a61c2a405f36ce6c65f3e93319c763e244f9d6f87e

      • C:\Windows\System64\1systemsmss.exe

        Filesize

        6.2MB

        MD5

        24e11f360833c184ac76cde7cc727b0e

        SHA1

        88438fab6c4a4120c1e09c8abe876ed4108c6906

        SHA256

        03ecfa9e62c6c03568209dcb2976354c0957da79f77bcf1368478c366042cd4f

        SHA512

        d2d25c1c5d3be123006efb50fb802325004287b0e1aeea7fe656fc6b8d61760d5b257a4460f1b24b410334a61c2a405f36ce6c65f3e93319c763e244f9d6f87e

      • C:\Windows\System64\svnhost.exe

        Filesize

        6.0MB

        MD5

        e437e8730f2163cba2552a5a374a885a

        SHA1

        514497f668ae7b80a698bd8cda6de2dcf104e450

        SHA256

        dde1cc7b34ad434fb515b4b315c2ec22a74e3b1b4d50fe83421fab4d6055b3a6

        SHA512

        e924929176c60f00bfd45f0ec991279d4bbb96be4f5f270e636594d4faad681c318cbc9374dd2126170e18f7b4e9db54b193c147b452655c2806921d8c76c445

      • C:\Windows\System64\svnhost.exe

        Filesize

        6.0MB

        MD5

        e437e8730f2163cba2552a5a374a885a

        SHA1

        514497f668ae7b80a698bd8cda6de2dcf104e450

        SHA256

        dde1cc7b34ad434fb515b4b315c2ec22a74e3b1b4d50fe83421fab4d6055b3a6

        SHA512

        e924929176c60f00bfd45f0ec991279d4bbb96be4f5f270e636594d4faad681c318cbc9374dd2126170e18f7b4e9db54b193c147b452655c2806921d8c76c445

      • C:\Windows\System64\svnhost.exe

        Filesize

        6.0MB

        MD5

        e437e8730f2163cba2552a5a374a885a

        SHA1

        514497f668ae7b80a698bd8cda6de2dcf104e450

        SHA256

        dde1cc7b34ad434fb515b4b315c2ec22a74e3b1b4d50fe83421fab4d6055b3a6

        SHA512

        e924929176c60f00bfd45f0ec991279d4bbb96be4f5f270e636594d4faad681c318cbc9374dd2126170e18f7b4e9db54b193c147b452655c2806921d8c76c445

      • C:\Windows\System64\svnhost.exe

        Filesize

        6.0MB

        MD5

        e437e8730f2163cba2552a5a374a885a

        SHA1

        514497f668ae7b80a698bd8cda6de2dcf104e450

        SHA256

        dde1cc7b34ad434fb515b4b315c2ec22a74e3b1b4d50fe83421fab4d6055b3a6

        SHA512

        e924929176c60f00bfd45f0ec991279d4bbb96be4f5f270e636594d4faad681c318cbc9374dd2126170e18f7b4e9db54b193c147b452655c2806921d8c76c445

      • C:\Windows\System64\svnhost.exe

        Filesize

        6.0MB

        MD5

        e437e8730f2163cba2552a5a374a885a

        SHA1

        514497f668ae7b80a698bd8cda6de2dcf104e450

        SHA256

        dde1cc7b34ad434fb515b4b315c2ec22a74e3b1b4d50fe83421fab4d6055b3a6

        SHA512

        e924929176c60f00bfd45f0ec991279d4bbb96be4f5f270e636594d4faad681c318cbc9374dd2126170e18f7b4e9db54b193c147b452655c2806921d8c76c445

      • C:\Windows\System64\systemsmss.exe

        Filesize

        5.1MB

        MD5

        bd458a26931f960f13958510e88a61a8

        SHA1

        be9fff29f269d649688e941e97ac03e669571837

        SHA256

        d295538301a5513d3e605e43586e48504ec22f87666a31ef06f697b5c9b611f3

        SHA512

        afe9e6209ade2846f31efb7b9977d42b28cd082eb0a4b9c4ba4b9c91d528afbc7efe748be0c78c938d042dc9d200c23d2f0552a7498ab23becac828df53245e7

      • C:\Windows\System64\systemsmss.exe

        Filesize

        5.1MB

        MD5

        bd458a26931f960f13958510e88a61a8

        SHA1

        be9fff29f269d649688e941e97ac03e669571837

        SHA256

        d295538301a5513d3e605e43586e48504ec22f87666a31ef06f697b5c9b611f3

        SHA512

        afe9e6209ade2846f31efb7b9977d42b28cd082eb0a4b9c4ba4b9c91d528afbc7efe748be0c78c938d042dc9d200c23d2f0552a7498ab23becac828df53245e7

      • C:\Windows\System64\systemsmss.exe

        Filesize

        5.1MB

        MD5

        bd458a26931f960f13958510e88a61a8

        SHA1

        be9fff29f269d649688e941e97ac03e669571837

        SHA256

        d295538301a5513d3e605e43586e48504ec22f87666a31ef06f697b5c9b611f3

        SHA512

        afe9e6209ade2846f31efb7b9977d42b28cd082eb0a4b9c4ba4b9c91d528afbc7efe748be0c78c938d042dc9d200c23d2f0552a7498ab23becac828df53245e7

      • C:\Windows\System64\vp8decoder.dll

        Filesize

        378KB

        MD5

        d43fa82fab5337ce20ad14650085c5d9

        SHA1

        678aa092075ff65b6815ffc2d8fdc23af8425981

        SHA256

        c022958429edd94bfe31f2eacfe24ff6b45d6f12747725c449a36116373de03b

        SHA512

        103e61a9f58df03316676a074487e50ec518479c11068df3736df139b85c7671048c65bce0ef2c55b3c50c61fde54e9e6c7d1b795aea71263ae94c91d4874e0d

      • C:\Windows\System64\vp8encoder.dll

        Filesize

        1.6MB

        MD5

        dab4646806dfca6d0e0b4d80fa9209d6

        SHA1

        8244dfe22ec2090eee89dad103e6b2002059d16a

        SHA256

        cb6ef96d3a66ef08ec2c8640b751a52d6d4f4530cf01162a69966f0fd5153587

        SHA512

        aa5eb93bf23a10de797d6fb52a55a95d36bc48927c76fedd81e0c48872745cb7f7d1b3f230eaae42fd4e79b6a59ca707e56bd6963b03644cbd5984f11e98d6e7

      • C:\Windows\Zont911\Regedit.reg

        Filesize

        11KB

        MD5

        c9d1eb161cc32d0a3a7f00b0fd4b56d8

        SHA1

        fcb0844d6ed77a158f477f4a682de4a8402ed1cd

        SHA256

        2cf96e92c92be3c48f93342b0f8e3ef5aa4f2f0aa6f5755cde82152bda56f88d

        SHA512

        bb25500a74fec3c2e18919d74b033489826b0081b31a6fe71a8ca04e55564bdba23cb729372e9f48976b141164fe009a182abccea7a5e47a630db077d752d112

      • C:\Windows\Zont911\Tupe.bat

        Filesize

        281B

        MD5

        691f040de6d335962416b319dcd416dc

        SHA1

        db49109c0917910f7fce8b6de690a1c7e2026226

        SHA256

        605d0b9c2fd1972c4ee60d8eefd336be636884dcdf54a4e5f2829c46e80fdcea

        SHA512

        f34ba36bdeaa43a1265ec69acfa0f199f2b4d5d90b4ea890327478f4f48ec7597d660b922dd1e149de3a1ff9b48c79e4c9c53e8a482b4cb5842bc0976f93bf89