Analysis

  • max time kernel
    136s
  • max time network
    139s
  • 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, 15:25

General

  • Target

    7441ee61db5f1ca3b26cf09df0763fed9f959b30970be46497e17f8470cb57a6.vbs

  • Size

    9KB

  • MD5

    11a8dbecbeb35ba5652b8fd4a9cefc9d

  • SHA1

    8ec32ebe929a907ce8c19433e5c5a6f48f7639c1

  • SHA256

    7441ee61db5f1ca3b26cf09df0763fed9f959b30970be46497e17f8470cb57a6

  • SHA512

    48dc0edf68d4a1f9d70a348a50aa93f8c42928a44a76709a34c641f8a04d3d97ed1fa98ac8aeab2d0ee41588597960ff81109e6e408503d3c4bd7ea96d4d5450

  • SSDEEP

    48:FeuekJeueheueRFF0euejzFF1Le8m3eNeueo:0jkAjYjbjM8mO8jo

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.

  • Blocklisted process makes network request 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • 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
  • Adds Run key to start application 2 TTPs 2 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.

  • Command and Scripting Interpreter: JavaScript 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\7441ee61db5f1ca3b26cf09df0763fed9f959b30970be46497e17f8470cb57a6.vbs"
    1⤵
    • Blocklisted process makes network request
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3176
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\MKLTPZ.js"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4048
      • C:\Users\Admin\AppData\Local\Temp\PbsonX.exe
        "C:\Users\Admin\AppData\Local\Temp\PbsonX.exe"
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1388
        • C:\Users\Admin\AppData\Local\Temp\PbsonX.exe
          "C:\Users\Admin\AppData\Local\Temp\PbsonX.exe"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:3000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    520B

    MD5

    03febbff58da1d3318c31657d89c8542

    SHA1

    c9e017bd9d0a4fe533795b227c855935d86c2092

    SHA256

    5164770a37b199a79ccd23b399bb3309228973d9f74c589bc2623dc613b37ac4

    SHA512

    3750c372bbca1892e9c1b34681d592c693e725a8b149c3d6938079cd467628cec42c4293b0d886b57a786abf45f5e7229247b3445001774e3e793ff5a3accfa3

  • C:\Users\Admin\AppData\Local\Temp\MKLTPZ.js

    Filesize

    6.6MB

    MD5

    ea57ef071f46a17df4b8976911510a85

    SHA1

    7ddaf13fcdf13173034c8e66ef8b49aef3fd6a8d

    SHA256

    aa79b39b43a7be8f342672a9b88fe35f2eff99c0088cf05acde9f5a9cec1bfc0

    SHA512

    f451352f8e6950d1403039e1b4ce3f8de3546179244caff7891d67c2c4f6a72228f6d14f6ec2fcab7c724f2d503c34897a7a71bfa306b0881f21faab4b553cee

  • C:\Users\Admin\AppData\Local\Temp\PbsonX.exe

    Filesize

    287KB

    MD5

    c7d1736b0a9f204446af8c5eb85a93bd

    SHA1

    a0b2bf664b02d76153c272318cfbdde300ca921a

    SHA256

    c2e3de7bf895dda2bf0d46057acc39aabf827d2c3599bc0f7ab3e6e05a0b3666

    SHA512

    4be6ede7c2de317e0beb151f9e3fbc92a3c7e893aa73c2e3cf12ea5c33498e0c13b987090d31915b40f7891d6e33d7e21f96e8cba6842d3235fc0e306e619ea5

  • memory/1388-16-0x0000000000C70000-0x0000000000CBE000-memory.dmp

    Filesize

    312KB

  • memory/1388-17-0x0000000005D10000-0x00000000062B4000-memory.dmp

    Filesize

    5.6MB

  • memory/1388-18-0x00000000032B0000-0x00000000032B8000-memory.dmp

    Filesize

    32KB

  • memory/3000-19-0x0000000000400000-0x000000000044A000-memory.dmp

    Filesize

    296KB

  • memory/3000-24-0x0000000004E00000-0x0000000004E9C000-memory.dmp

    Filesize

    624KB

  • memory/3000-25-0x0000000006530000-0x00000000066F2000-memory.dmp

    Filesize

    1.8MB

  • memory/3000-26-0x00000000063C0000-0x0000000006410000-memory.dmp

    Filesize

    320KB

  • memory/3000-27-0x0000000006700000-0x0000000006792000-memory.dmp

    Filesize

    584KB

  • memory/3000-28-0x00000000064D0000-0x00000000064DA000-memory.dmp

    Filesize

    40KB