Resubmissions

28/03/2025, 02:42

250328-c7a9yssrz3 10

28/03/2025, 02:36

250328-c32w4s1tey 10

Analysis

  • max time kernel
    106s
  • max time network
    118s
  • platform
    windows11-21h2_x64
  • resource
    win11-20250313-en
  • resource tags

    arch:x64arch:x86image:win11-20250313-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    28/03/2025, 02:42

General

  • Target

    Payroll List.exe

  • Size

    1.0MB

  • MD5

    13c442d8b8f4b6039b92e9beabaed96c

  • SHA1

    00e5f09a57064338f1db88298f31c50d853aca9e

  • SHA256

    aa21fca827d1d73cfc4f1153945a1534a66240e396ba3f9b361b6bd80aa31023

  • SHA512

    f44f42b5847530e647cf556fa2f014bd163d2657185b3ea6819fa95c2dae4a2ac7abaf4ca6f43ef259c6f1de15e9c4c87b0a7ba015aa6c07eb17e7b00544b97c

  • SSDEEP

    24576:Du6J33O0c+JY5UZ+XC0kGso6Faj1bcFSonuDiWY:Nu0c++OCvkGs9FapbbocY

Malware Config

Extracted

Family

vipkeylogger

C2

https://api.telegram.org/bot8089350393:AAGtBAwUH6SGnhWUaMF4LZ_wf4asnjV0ZLY/sendMessage?chat_id=7839951264

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.

  • 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 behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Payroll List.exe
    "C:\Users\Admin\AppData\Local\Temp\Payroll List.exe" bcdedit /c set shutdown /r readonly /f force /t 2
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1088
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "C:\Users\Admin\AppData\Local\Temp\Payroll List.exe" bcdedit /c set shutdown /r readonly /f force /t 2
      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:4172
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1088 -s 724
      2⤵
      • Program crash
      PID:3152
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1088 -ip 1088
    1⤵
      PID:4088

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1088-6-0x0000000000D50000-0x0000000001150000-memory.dmp

      Filesize

      4.0MB

    • memory/4172-7-0x0000000000400000-0x000000000044A000-memory.dmp

      Filesize

      296KB

    • memory/4172-8-0x00000000742FE000-0x00000000742FF000-memory.dmp

      Filesize

      4KB

    • memory/4172-9-0x0000000005E60000-0x0000000006406000-memory.dmp

      Filesize

      5.6MB

    • memory/4172-10-0x00000000058B0000-0x000000000594C000-memory.dmp

      Filesize

      624KB

    • memory/4172-11-0x00000000742F0000-0x0000000074AA1000-memory.dmp

      Filesize

      7.7MB

    • memory/4172-12-0x00000000742FE000-0x00000000742FF000-memory.dmp

      Filesize

      4KB

    • memory/4172-13-0x0000000006BA0000-0x0000000006D62000-memory.dmp

      Filesize

      1.8MB

    • memory/4172-14-0x0000000006A40000-0x0000000006A90000-memory.dmp

      Filesize

      320KB

    • memory/4172-15-0x00000000073A0000-0x00000000078CC000-memory.dmp

      Filesize

      5.2MB

    • memory/4172-16-0x00000000742F0000-0x0000000074AA1000-memory.dmp

      Filesize

      7.7MB

    • memory/4172-17-0x0000000006F10000-0x0000000006FA2000-memory.dmp

      Filesize

      584KB

    • memory/4172-18-0x0000000006EB0000-0x0000000006EBA000-memory.dmp

      Filesize

      40KB