Analysis

  • max time kernel
    134s
  • max time network
    125s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/08/2024, 03:23

General

  • Target

    SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe

  • Size

    698KB

  • MD5

    a9c460a020b9b80a360ed5f0d23f12a1

  • SHA1

    a2686effa4cee1d638d780c4e33d3626f7821fe3

  • SHA256

    7af98634dd9d2f4b3a52ee5651fabf2bd1215d7a79109fc4e0ff9095119944b3

  • SHA512

    e9e1bc642275598851af83c4d8fe1e2e0aec66561517f5507bf69b73085d36c8b25f15e70df796d5e8e5a14f6dbb65db18a8f974003f8163062a098a9f31e658

  • SSDEEP

    12288:LVVnSIwjGnYdHTpvc4OUOpmJzerz1cVX36xjNGSqWp7HP:vVjYdzpvc4OULgz1cVn6xM8pjP

Malware Config

Extracted

Family

vipkeylogger

Credentials

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:408
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3636
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe"
      2⤵
        PID:4520
      • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe
        "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.MSIL_Kryptik.KTU.gen.Eldorado.3036.13101.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        • outlook_office_path
        • outlook_win_path
        PID:1508
        • C:\Windows\SysWOW64\REG.exe
          REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f
          3⤵
          • Disables RegEdit via registry modification
          • System Location Discovery: System Language Discovery
          • Modifies registry key
          PID:4316
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1508 -s 1956
          3⤵
          • Program crash
          PID:2444
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 1508 -ip 1508
      1⤵
        PID:2460

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mxnthtla.ql2.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • memory/408-8-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/408-16-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/408-3-0x00000000058C0000-0x0000000005952000-memory.dmp

        Filesize

        584KB

      • memory/408-4-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/408-5-0x00000000059A0000-0x00000000059AA000-memory.dmp

        Filesize

        40KB

      • memory/408-6-0x0000000005D70000-0x0000000005D88000-memory.dmp

        Filesize

        96KB

      • memory/408-7-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

        Filesize

        4KB

      • memory/408-1-0x0000000000E20000-0x0000000000ED4000-memory.dmp

        Filesize

        720KB

      • memory/408-2-0x0000000005F50000-0x00000000064F4000-memory.dmp

        Filesize

        5.6MB

      • memory/408-9-0x0000000006C90000-0x0000000006D1C000-memory.dmp

        Filesize

        560KB

      • memory/408-10-0x0000000006EC0000-0x0000000006F5C000-memory.dmp

        Filesize

        624KB

      • memory/408-0-0x0000000074F3E000-0x0000000074F3F000-memory.dmp

        Filesize

        4KB

      • memory/1508-11-0x0000000000400000-0x000000000044A000-memory.dmp

        Filesize

        296KB

      • memory/1508-62-0x0000000006860000-0x00000000068B0000-memory.dmp

        Filesize

        320KB

      • memory/1508-14-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/1508-61-0x0000000006A30000-0x0000000006BF2000-memory.dmp

        Filesize

        1.8MB

      • memory/1508-31-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/1508-63-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/3636-32-0x0000000005F10000-0x0000000006264000-memory.dmp

        Filesize

        3.3MB

      • memory/3636-50-0x0000000007820000-0x000000000783A000-memory.dmp

        Filesize

        104KB

      • memory/3636-21-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/3636-20-0x0000000005EA0000-0x0000000005F06000-memory.dmp

        Filesize

        408KB

      • memory/3636-33-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/3636-18-0x0000000005420000-0x0000000005442000-memory.dmp

        Filesize

        136KB

      • memory/3636-34-0x00000000064D0000-0x00000000064EE000-memory.dmp

        Filesize

        120KB

      • memory/3636-35-0x0000000006640000-0x000000000668C000-memory.dmp

        Filesize

        304KB

      • memory/3636-36-0x0000000006AC0000-0x0000000006AF2000-memory.dmp

        Filesize

        200KB

      • memory/3636-37-0x0000000070A80000-0x0000000070ACC000-memory.dmp

        Filesize

        304KB

      • memory/3636-47-0x00000000076C0000-0x00000000076DE000-memory.dmp

        Filesize

        120KB

      • memory/3636-48-0x00000000076E0000-0x0000000007783000-memory.dmp

        Filesize

        652KB

      • memory/3636-49-0x0000000007E60000-0x00000000084DA000-memory.dmp

        Filesize

        6.5MB

      • memory/3636-19-0x0000000005640000-0x00000000056A6000-memory.dmp

        Filesize

        408KB

      • memory/3636-51-0x0000000007890000-0x000000000789A000-memory.dmp

        Filesize

        40KB

      • memory/3636-52-0x0000000007AA0000-0x0000000007B36000-memory.dmp

        Filesize

        600KB

      • memory/3636-53-0x0000000007A20000-0x0000000007A31000-memory.dmp

        Filesize

        68KB

      • memory/3636-54-0x0000000007A50000-0x0000000007A5E000-memory.dmp

        Filesize

        56KB

      • memory/3636-55-0x0000000007A60000-0x0000000007A74000-memory.dmp

        Filesize

        80KB

      • memory/3636-56-0x0000000007B60000-0x0000000007B7A000-memory.dmp

        Filesize

        104KB

      • memory/3636-57-0x0000000007B40000-0x0000000007B48000-memory.dmp

        Filesize

        32KB

      • memory/3636-60-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/3636-17-0x0000000074F30000-0x00000000756E0000-memory.dmp

        Filesize

        7.7MB

      • memory/3636-15-0x00000000056C0000-0x0000000005CE8000-memory.dmp

        Filesize

        6.2MB

      • memory/3636-13-0x0000000002B80000-0x0000000002BB6000-memory.dmp

        Filesize

        216KB