Analysis

  • max time kernel
    38s
  • max time network
    52s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    25-11-2022 19:34

Errors

Reason
Machine shutdown

General

  • Target

    Vale_Presente.exe

  • Size

    1.7MB

  • MD5

    ea6ffad92153412e5237665c82c78799

  • SHA1

    db71dca3183cb79d10cde3153d2c7eab4d6ad7d2

  • SHA256

    f5a5f9093b00de4ab3740188f75612847e94551cba90878519637d86b5355e01

  • SHA512

    ed13c783bfc614d2ed1c3b31e22cef33234c5ad77d1017f9368d5a6542a98325496f119a78fdc80bc92f1faa31ef06f079d8023e154ea6f987479bc06add5ae3

  • SSDEEP

    3072:dwvqbFtkEyWvXFPmy/DA/cZd0SzsZpzbwgWamdUHGNFopPF1XeRBIytGVXi8FrTN:jDycXI6lZij/1TGFo5F1DXRDXy1

Malware Config

Signatures

  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
  • Modifies registry class 45 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Vale_Presente.exe
    "C:\Users\Admin\AppData\Local\Temp\Vale_Presente.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1760
    • C:\Users\Admin\26112022.exe
      "C:\Users\Admin\26112022.exe"
      2⤵
      • UAC bypass
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Installs/modifies Browser Helper Object
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1692
      • C:\Windows\SysWOW64\shutdown.exe
        shutdown.exe -r -f -t 0
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1932
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x55c
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1672
  • C:\Windows\system32\LogonUI.exe
    "LogonUI.exe" /flags:0x0
    1⤵
      PID:2036
    • C:\Windows\system32\LogonUI.exe
      "LogonUI.exe" /flags:0x1
      1⤵
        PID:1716

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      Registry Run Keys / Startup Folder

      1
      T1060

      Browser Extensions

      1
      T1176

      Privilege Escalation

      Bypass User Account Control

      1
      T1088

      Defense Evasion

      Bypass User Account Control

      1
      T1088

      Disabling Security Tools

      1
      T1089

      Modify Registry

      5
      T1112

      Discovery

      System Information Discovery

      2
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\26112022.exe
        Filesize

        1.7MB

        MD5

        ea6ffad92153412e5237665c82c78799

        SHA1

        db71dca3183cb79d10cde3153d2c7eab4d6ad7d2

        SHA256

        f5a5f9093b00de4ab3740188f75612847e94551cba90878519637d86b5355e01

        SHA512

        ed13c783bfc614d2ed1c3b31e22cef33234c5ad77d1017f9368d5a6542a98325496f119a78fdc80bc92f1faa31ef06f079d8023e154ea6f987479bc06add5ae3

      • C:\Users\Admin\26112022.exe
        Filesize

        1.7MB

        MD5

        ea6ffad92153412e5237665c82c78799

        SHA1

        db71dca3183cb79d10cde3153d2c7eab4d6ad7d2

        SHA256

        f5a5f9093b00de4ab3740188f75612847e94551cba90878519637d86b5355e01

        SHA512

        ed13c783bfc614d2ed1c3b31e22cef33234c5ad77d1017f9368d5a6542a98325496f119a78fdc80bc92f1faa31ef06f079d8023e154ea6f987479bc06add5ae3

      • C:\Users\Admin\26112022.tmp
        Filesize

        55B

        MD5

        929ed09ec05257e4b2852823a571ca47

        SHA1

        5ead69983eeda06dbf09b24df8264b95d0f4738c

        SHA256

        c2b80186cc569e5dcdd394d4c0e71a38a2470f4415e2d2bddd33f1785d4dec74

        SHA512

        ea9638246d19a8ceccb832744cba27fa1b056e53f8a1d032774d766e55cdcaf3dd7a87dfa0344fd22c5212bdfd539b301bc82c157a8b7a721c8688863aa322b8

      • \Users\Admin\26112022.exe
        Filesize

        1.7MB

        MD5

        ea6ffad92153412e5237665c82c78799

        SHA1

        db71dca3183cb79d10cde3153d2c7eab4d6ad7d2

        SHA256

        f5a5f9093b00de4ab3740188f75612847e94551cba90878519637d86b5355e01

        SHA512

        ed13c783bfc614d2ed1c3b31e22cef33234c5ad77d1017f9368d5a6542a98325496f119a78fdc80bc92f1faa31ef06f079d8023e154ea6f987479bc06add5ae3

      • \Users\Admin\26112022.exe
        Filesize

        1.7MB

        MD5

        ea6ffad92153412e5237665c82c78799

        SHA1

        db71dca3183cb79d10cde3153d2c7eab4d6ad7d2

        SHA256

        f5a5f9093b00de4ab3740188f75612847e94551cba90878519637d86b5355e01

        SHA512

        ed13c783bfc614d2ed1c3b31e22cef33234c5ad77d1017f9368d5a6542a98325496f119a78fdc80bc92f1faa31ef06f079d8023e154ea6f987479bc06add5ae3

      • \Users\Admin\enrqffre\enrqffre.tmp
        Filesize

        560KB

        MD5

        44f7d31463d79dd60560195e8fa33b29

        SHA1

        27ecd3fa4fe68f5e72f9a1d25887d2ff1e082140

        SHA256

        4a3774c66e6c46a99f610aecd533224331303ae4eb0582ee8e0653b4bd7971d0

        SHA512

        57977f4ed1a5801e48e060ef282407411b31f3cc2a2fc47af08259faadc4190abf188a6916fcd6c3c8d034bed873da48e90c16988500a76fca7fffa4c2cbc790

      • memory/1692-59-0x0000000000000000-mapping.dmp
      • memory/1692-65-0x0000000004461000-0x000000000530D000-memory.dmp
        Filesize

        14.7MB

      • memory/1692-67-0x0000000071C21000-0x0000000071C23000-memory.dmp
        Filesize

        8KB

      • memory/1760-56-0x0000000074DA1000-0x0000000074DA3000-memory.dmp
        Filesize

        8KB

      • memory/1932-69-0x0000000000000000-mapping.dmp
      • memory/2036-70-0x000007FEFB651000-0x000007FEFB653000-memory.dmp
        Filesize

        8KB