Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250217-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/02/2025, 13:23

General

  • Target

    BugSplat64.dll

  • Size

    12.4MB

  • MD5

    5dc0ed87146dacc6f84005f6667a977a

  • SHA1

    397fd547749314eca0780275e8c695067256d82d

  • SHA256

    5b0c0b5fab4030da17e80d45dddaacda910e443d3a270882196968b9309bfaaf

  • SHA512

    f3df02654ebee17d9b7c1346d6a4a69d8a5fb025731e27ac7cab4929e4ec87818d6ed446ad95a959000013730d65523ff24036af23847ab0646883883b7df786

  • SSDEEP

    98304:ppnzRymHDY4HFSnarEN1w7Kx7GdvrqexhNZZ0MG1qB1H7F2hjGXCcdWSxwxQ2jh:pNFD84H+NqelOBBZZsItR2hjGXPdcxF

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.

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\BugSplat64.dll,#1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:412
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
      2⤵
        PID:4940
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
        2⤵
        • Accesses Microsoft Outlook profiles
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • outlook_office_path
        • outlook_win_path
        PID:792

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/412-0-0x0000020C48AC0000-0x0000020C48AD0000-memory.dmp

      Filesize

      64KB

    • memory/792-896-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/792-897-0x00000000750EE000-0x00000000750EF000-memory.dmp

      Filesize

      4KB

    • memory/792-898-0x0000000005B60000-0x0000000006104000-memory.dmp

      Filesize

      5.6MB

    • memory/792-899-0x0000000005650000-0x00000000056EC000-memory.dmp

      Filesize

      624KB

    • memory/792-900-0x00000000750E0000-0x0000000075890000-memory.dmp

      Filesize

      7.7MB

    • memory/792-901-0x0000000006920000-0x0000000006AE2000-memory.dmp

      Filesize

      1.8MB

    • memory/792-902-0x00000000067A0000-0x00000000067F0000-memory.dmp

      Filesize

      320KB

    • memory/792-903-0x00000000750EE000-0x00000000750EF000-memory.dmp

      Filesize

      4KB

    • memory/792-904-0x00000000750E0000-0x0000000075890000-memory.dmp

      Filesize

      7.7MB

    • memory/792-905-0x0000000006AF0000-0x0000000006B82000-memory.dmp

      Filesize

      584KB

    • memory/792-906-0x00000000068A0000-0x00000000068AA000-memory.dmp

      Filesize

      40KB