Analysis

  • max time kernel
    121s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-ja
  • resource tags

    arch:x64arch:x86image:win7-20240903-jalocale:ja-jpos:windows7-x64systemwindows
  • submitted
    13-11-2024 03:37

General

  • Target

    お見積依頼、_20241113.exe

  • Size

    701KB

  • MD5

    77cf9c286b05a5afaca2de336ba1f075

  • SHA1

    bc95b5df0602b53675429f06a9f1e367b65e1b86

  • SHA256

    39adb205bc13aa9d2e6e2531da9c7955e46f5e27fceae045a8c040971e702ec0

  • SHA512

    e42e9dd3c26926354cabaed656042db7d3294f90a942ce5c33ea16d11f0b2e078489c5e9d9ab33a25266eec1f0b5df3bf80764dcbd17ebe91775b5622fb846db

  • SSDEEP

    12288:JMyCotxqmA3F+mGDTLXRNFovOLV0kzO7ka3x7TCJmxa564nv+Z1chLX/3R:JMyBqmubWTLho0V0EO7D3x/CIp82Z1c/

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
  • 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.

  • 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 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\お見積依頼、_20241113.exe
    "C:\Users\Admin\AppData\Local\Temp\お見積依頼、_20241113.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2532
    • 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\お見積依頼、_20241113.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2352
    • C:\Users\Admin\AppData\Local\Temp\お見積依頼、_20241113.exe
      "C:\Users\Admin\AppData\Local\Temp\お見積依頼、_20241113.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:2248

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2248-13-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-11-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-21-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-19-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-24-0x0000000074860000-0x0000000074F4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2248-22-0x0000000074860000-0x0000000074F4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2248-9-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-7-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-17-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2248-27-0x0000000074860000-0x0000000074F4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2248-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2532-2-0x0000000074860000-0x0000000074F4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2532-0-0x000000007486E000-0x000000007486F000-memory.dmp

    Filesize

    4KB

  • memory/2532-1-0x00000000010D0000-0x0000000001186000-memory.dmp

    Filesize

    728KB

  • memory/2532-6-0x0000000005120000-0x00000000051AE000-memory.dmp

    Filesize

    568KB

  • memory/2532-5-0x0000000074860000-0x0000000074F4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2532-23-0x0000000074860000-0x0000000074F4E000-memory.dmp

    Filesize

    6.9MB

  • memory/2532-4-0x000000007486E000-0x000000007486F000-memory.dmp

    Filesize

    4KB

  • memory/2532-3-0x00000000004C0000-0x00000000004D2000-memory.dmp

    Filesize

    72KB