Analysis

  • max time kernel
    120s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03-12-2024 14:03

General

  • Target

    K1_Chit_Form.scr.exe

  • Size

    646KB

  • MD5

    8ae914653340ef79bbf6c39eaf259e16

  • SHA1

    7b74c24e74bdb4837ebf448362dd2d261843e833

  • SHA256

    8bc4c184f461f92d95fd52ca1e1224fb3f3a905b3f8516211f47903a61cea271

  • SHA512

    e6e91013a45ea11451634c0fd5215a72be9a17c7e0cc3984c7b5a1120fee57cb5796d7884ba11ede95f068960646dc73cd6df44053cd41293d51a09e137b01fb

  • SSDEEP

    12288:pjBR3Lxt5wW1oLiLud/6w3ZJPAJBom1M8E16YdL7Dd3i6:pdvT96Pd/ex1Mt16YdLl3z

Malware Config

Extracted

Family

vipkeylogger

Signatures

  • VIPKeylogger

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

  • Vipkeylogger family
  • Drops startup file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 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 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.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe
    "C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2100
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
      "Powershell.exe" -ExecutionPolicy Bypass -command Copy-Item 'C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe' 'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\.exe'
      2⤵
      • Drops startup file
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2536
    • C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe
      "C:\Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe"
      2⤵
      • 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:2304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\K1_Chit_Form.scr.exe

    Filesize

    646KB

    MD5

    8ae914653340ef79bbf6c39eaf259e16

    SHA1

    7b74c24e74bdb4837ebf448362dd2d261843e833

    SHA256

    8bc4c184f461f92d95fd52ca1e1224fb3f3a905b3f8516211f47903a61cea271

    SHA512

    e6e91013a45ea11451634c0fd5215a72be9a17c7e0cc3984c7b5a1120fee57cb5796d7884ba11ede95f068960646dc73cd6df44053cd41293d51a09e137b01fb

  • memory/2100-12-0x00000000004B0000-0x00000000004B8000-memory.dmp

    Filesize

    32KB

  • memory/2100-1-0x0000000001080000-0x0000000001128000-memory.dmp

    Filesize

    672KB

  • memory/2100-2-0x0000000000FD0000-0x0000000001038000-memory.dmp

    Filesize

    416KB

  • memory/2100-3-0x00000000746C0000-0x0000000074DAE000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-29-0x00000000746C0000-0x0000000074DAE000-memory.dmp

    Filesize

    6.9MB

  • memory/2100-28-0x00000000746CE000-0x00000000746CF000-memory.dmp

    Filesize

    4KB

  • memory/2100-0-0x00000000746CE000-0x00000000746CF000-memory.dmp

    Filesize

    4KB

  • memory/2304-24-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-15-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-31-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-14-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-21-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2304-18-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-17-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-16-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-30-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-27-0x0000000000BA0000-0x0000000000BEE000-memory.dmp

    Filesize

    312KB

  • memory/2304-25-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2304-26-0x00000000006C0000-0x0000000000710000-memory.dmp

    Filesize

    320KB

  • memory/2536-8-0x000000006F4D0000-0x000000006FA7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2536-7-0x000000006F4D0000-0x000000006FA7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2536-6-0x000000006F4D1000-0x000000006F4D2000-memory.dmp

    Filesize

    4KB

  • memory/2536-11-0x000000006F4D0000-0x000000006FA7B000-memory.dmp

    Filesize

    5.7MB

  • memory/2536-9-0x000000006F4D0000-0x000000006FA7B000-memory.dmp

    Filesize

    5.7MB