Analysis

  • max time kernel
    152s
  • max time network
    159s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 09:26

General

  • Target

    4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562.exe

  • Size

    6.2MB

  • MD5

    549e052c359d23383860a2335abe004a

  • SHA1

    3de0534f0c4c218c622da515385a80350cbd87f6

  • SHA256

    4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562

  • SHA512

    8b06d72dfb4069a6c712ae1046ab8537b597f064f02429766aa5afa66cf705eb39b0ac05bdbc23cfb21ac6002a6984f7f409a62e6eaa13d796cd76d17d58d1b3

  • SSDEEP

    196608:UPfaZYMRlp30bgwOGcjwppBR5dgI8H++:UKOMRlN0bgXGGwpj5gI8e

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
  • Loads dropped DLL 6 IoCs
  • 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 FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562.exe
    "C:\Users\Admin\AppData\Local\Temp\4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:904
    • C:\Windows\System64\1systemsmss.exe
      "C:\Windows\System64\1systemsmss.exe"
      2⤵
      • Modifies WinLogon for persistence
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Drops file in Windows directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1524
      • C:\Windows\SysWOW64\regedit.exe
        "C:\Windows\System32\regedit.exe" /s "C:\Windows\Zont911\Regedit.reg"
        3⤵
        • Runs .reg file with regedit
        PID:1736
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Windows\Zont911\Tupe.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:2028
        • C:\Windows\SysWOW64\chcp.com
          Chcp 1251
          4⤵
            PID:2044
          • C:\Windows\System64\svnhost.exe
            "C:\Windows\System64\svnhost.exe" /silentinstall
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1764
          • C:\Windows\System64\svnhost.exe
            "C:\Windows\System64\svnhost.exe" /firewall
            4⤵
            • Executes dropped EXE
            • Suspicious use of SetWindowsHookEx
            PID:1768
          • C:\Windows\System64\svnhost.exe
            "C:\Windows\System64\svnhost.exe" /start
            4⤵
            • Executes dropped EXE
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1384
    • C:\Windows\System64\svnhost.exe
      C:\Windows\System64\svnhost.exe
      1⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1756
      • C:\Windows\System64\systemsmss.exe
        C:\Windows\System64\systemsmss.exe /tray
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:332
      • C:\Windows\System64\systemsmss.exe
        C:\Windows\System64\systemsmss.exe
        2⤵
        • Executes dropped EXE
        PID:1180

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Persistence

    Winlogon Helper DLL

    1
    T1004

    Registry Run Keys / Startup Folder

    1
    T1060

    Defense Evasion

    Modify Registry

    2
    T1112

    Discovery

    System Information Discovery

    1
    T1082

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      6.2MB

      MD5

      549e052c359d23383860a2335abe004a

      SHA1

      3de0534f0c4c218c622da515385a80350cbd87f6

      SHA256

      4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562

      SHA512

      8b06d72dfb4069a6c712ae1046ab8537b597f064f02429766aa5afa66cf705eb39b0ac05bdbc23cfb21ac6002a6984f7f409a62e6eaa13d796cd76d17d58d1b3

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

      6.2MB

      MD5

      549e052c359d23383860a2335abe004a

      SHA1

      3de0534f0c4c218c622da515385a80350cbd87f6

      SHA256

      4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562

      SHA512

      8b06d72dfb4069a6c712ae1046ab8537b597f064f02429766aa5afa66cf705eb39b0ac05bdbc23cfb21ac6002a6984f7f409a62e6eaa13d796cd76d17d58d1b3

    • 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

      8652240acb0c567db26f15721b4eb7a1

      SHA1

      8e302e822bd83dc106d735343267dcb7c2384b93

      SHA256

      d86fc93ea8d3f3a2c7b09c64942ddffd1cc6fbbbf002fec07815138fa634f1b8

      SHA512

      e95d58d7525c16659705522bbb700ee94985da8084ca55d59d5be04e86ca5a51186c287eabf9f78e1aa6403823011323ffded3964c73691a71ef2d0036acc4d9

    • C:\Windows\Zont911\Tupe.bat
      Filesize

      281B

      MD5

      691f040de6d335962416b319dcd416dc

      SHA1

      db49109c0917910f7fce8b6de690a1c7e2026226

      SHA256

      605d0b9c2fd1972c4ee60d8eefd336be636884dcdf54a4e5f2829c46e80fdcea

      SHA512

      f34ba36bdeaa43a1265ec69acfa0f199f2b4d5d90b4ea890327478f4f48ec7597d660b922dd1e149de3a1ff9b48c79e4c9c53e8a482b4cb5842bc0976f93bf89

    • \Windows\System64\1systemsmss.exe
      Filesize

      6.2MB

      MD5

      549e052c359d23383860a2335abe004a

      SHA1

      3de0534f0c4c218c622da515385a80350cbd87f6

      SHA256

      4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562

      SHA512

      8b06d72dfb4069a6c712ae1046ab8537b597f064f02429766aa5afa66cf705eb39b0ac05bdbc23cfb21ac6002a6984f7f409a62e6eaa13d796cd76d17d58d1b3

    • \Windows\System64\1systemsmss.exe
      Filesize

      6.2MB

      MD5

      549e052c359d23383860a2335abe004a

      SHA1

      3de0534f0c4c218c622da515385a80350cbd87f6

      SHA256

      4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562

      SHA512

      8b06d72dfb4069a6c712ae1046ab8537b597f064f02429766aa5afa66cf705eb39b0ac05bdbc23cfb21ac6002a6984f7f409a62e6eaa13d796cd76d17d58d1b3

    • \Windows\System64\1systemsmss.exe
      Filesize

      6.2MB

      MD5

      549e052c359d23383860a2335abe004a

      SHA1

      3de0534f0c4c218c622da515385a80350cbd87f6

      SHA256

      4c871923e65e65c0e08eb216c8db9c60aebccf8060646ec6fc06886091678562

      SHA512

      8b06d72dfb4069a6c712ae1046ab8537b597f064f02429766aa5afa66cf705eb39b0ac05bdbc23cfb21ac6002a6984f7f409a62e6eaa13d796cd76d17d58d1b3

    • \Windows\System64\svnhost.exe
      Filesize

      6.0MB

      MD5

      e437e8730f2163cba2552a5a374a885a

      SHA1

      514497f668ae7b80a698bd8cda6de2dcf104e450

      SHA256

      dde1cc7b34ad434fb515b4b315c2ec22a74e3b1b4d50fe83421fab4d6055b3a6

      SHA512

      e924929176c60f00bfd45f0ec991279d4bbb96be4f5f270e636594d4faad681c318cbc9374dd2126170e18f7b4e9db54b193c147b452655c2806921d8c76c445

    • \Windows\System64\systemsmss.exe
      Filesize

      5.1MB

      MD5

      bd458a26931f960f13958510e88a61a8

      SHA1

      be9fff29f269d649688e941e97ac03e669571837

      SHA256

      d295538301a5513d3e605e43586e48504ec22f87666a31ef06f697b5c9b611f3

      SHA512

      afe9e6209ade2846f31efb7b9977d42b28cd082eb0a4b9c4ba4b9c91d528afbc7efe748be0c78c938d042dc9d200c23d2f0552a7498ab23becac828df53245e7

    • \Windows\System64\systemsmss.exe
      Filesize

      5.1MB

      MD5

      bd458a26931f960f13958510e88a61a8

      SHA1

      be9fff29f269d649688e941e97ac03e669571837

      SHA256

      d295538301a5513d3e605e43586e48504ec22f87666a31ef06f697b5c9b611f3

      SHA512

      afe9e6209ade2846f31efb7b9977d42b28cd082eb0a4b9c4ba4b9c91d528afbc7efe748be0c78c938d042dc9d200c23d2f0552a7498ab23becac828df53245e7

    • memory/332-86-0x0000000000000000-mapping.dmp
    • memory/904-54-0x0000000075E11000-0x0000000075E13000-memory.dmp
      Filesize

      8KB

    • memory/1180-87-0x0000000000000000-mapping.dmp
    • memory/1384-76-0x0000000000000000-mapping.dmp
    • memory/1524-57-0x0000000000000000-mapping.dmp
    • memory/1736-62-0x0000000000000000-mapping.dmp
    • memory/1764-70-0x0000000000000000-mapping.dmp
    • memory/1768-73-0x0000000000000000-mapping.dmp
    • memory/2028-65-0x0000000000000000-mapping.dmp
    • memory/2044-67-0x0000000000000000-mapping.dmp