Analysis

  • max time kernel
    118s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06-01-2025 14:58

General

  • Target

    document pdf.exe

  • Size

    742KB

  • MD5

    c67b6ff2d472bf82dc4da545dbc37a43

  • SHA1

    c5e677e5e48d5ca965b6e2d3f0c8b56fb80e7be5

  • SHA256

    df3c8cc4eaf6b0a8a6a0254c54160486df1b38f8a6591a60dbc520f38389c400

  • SHA512

    69ba6f8e9e99f09a669ae875412af6bcb87dd649161e8e725be05c9db2ce8fe20da88de509cd9208a427b93172caeb94ed588efa5697eb0ebf5fe262d8943e11

  • SSDEEP

    12288:74doaeS+/ZgdvAC+O8DzxPzNjZGtypP2q2PEexgQNqaCBCrRKNr6sj9Gn:EdFeSTdv+O8vxPzNjUtE7280RNqaLrMc

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    wVCMFq@2wVCMFq@2

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
  • 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 3 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 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.

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 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 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\document pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\document pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4972
    • C:\Users\Admin\AppData\Local\Temp\document pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\document pdf.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:3280
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 1200
      2⤵
      • Program crash
      PID:60
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4972 -ip 4972
    1⤵
      PID:3556

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\document pdf.exe.log

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • memory/3280-11-0x0000000000400000-0x000000000044A000-memory.dmp

      Filesize

      296KB

    • memory/3280-21-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/3280-20-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/3280-19-0x0000000007500000-0x0000000007A2C000-memory.dmp

      Filesize

      5.2MB

    • memory/3280-18-0x0000000006CA0000-0x0000000006CF0000-memory.dmp

      Filesize

      320KB

    • memory/3280-17-0x0000000006E00000-0x0000000006FC2000-memory.dmp

      Filesize

      1.8MB

    • memory/3280-15-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/3280-14-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/4972-10-0x0000000006BB0000-0x0000000006C3E000-memory.dmp

      Filesize

      568KB

    • memory/4972-0-0x00000000746DE000-0x00000000746DF000-memory.dmp

      Filesize

      4KB

    • memory/4972-9-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/4972-8-0x00000000746DE000-0x00000000746DF000-memory.dmp

      Filesize

      4KB

    • memory/4972-7-0x0000000005280000-0x0000000005294000-memory.dmp

      Filesize

      80KB

    • memory/4972-6-0x00000000052A0000-0x000000000533C000-memory.dmp

      Filesize

      624KB

    • memory/4972-16-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/4972-5-0x0000000005050000-0x000000000505A000-memory.dmp

      Filesize

      40KB

    • memory/4972-4-0x00000000746D0000-0x0000000074E80000-memory.dmp

      Filesize

      7.7MB

    • memory/4972-3-0x0000000004F90000-0x0000000005022000-memory.dmp

      Filesize

      584KB

    • memory/4972-2-0x0000000005650000-0x0000000005BF4000-memory.dmp

      Filesize

      5.6MB

    • memory/4972-1-0x0000000000520000-0x00000000005E0000-memory.dmp

      Filesize

      768KB