Analysis

  • max time kernel
    134s
  • max time network
    119s
  • 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, 15:32

General

  • Target

    regasm.exe

  • Size

    694KB

  • MD5

    62b9f8d4c98febbcd68e635c14d8d882

  • SHA1

    9689119fff4101543313c9fc73072cc3f7cb9736

  • SHA256

    e93063292dbb2c3209541ea13e57d0cca3225f35eb18977d2b3400a97255a49d

  • SHA512

    7eb0993733bd683b5b4ad128c1f7d746de4125da05d5e8bdbde1070705175ac12b431ab1924d08652462a3f4e5bf63bfb60717ac6b476186eff30e4aa9e2ee05

  • SSDEEP

    12288:btJJZsVISjztCzxhgAhxAFmu52iOYTH14FErBxLef:btJ3sVIUzkTgSqFF5bH

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.

  • 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
  • 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.

  • 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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\regasm.exe
    "C:\Users\Admin\AppData\Local\Temp\regasm.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4516
    • C:\Users\Admin\AppData\Local\Temp\regasm.exe
      "C:\Users\Admin\AppData\Local\Temp\regasm.exe"
      2⤵
        PID:4392
      • C:\Users\Admin\AppData\Local\Temp\regasm.exe
        "C:\Users\Admin\AppData\Local\Temp\regasm.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:4528

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1KB

      MD5

      8ec831f3e3a3f77e4a7b9cd32b48384c

      SHA1

      d83f09fd87c5bd86e045873c231c14836e76a05c

      SHA256

      7667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982

      SHA512

      26bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3

    • memory/4516-10-0x00000000064F0000-0x000000000657C000-memory.dmp

      Filesize

      560KB

    • memory/4516-2-0x00000000058B0000-0x0000000005E54000-memory.dmp

      Filesize

      5.6MB

    • memory/4516-3-0x0000000005210000-0x00000000052A2000-memory.dmp

      Filesize

      584KB

    • memory/4516-4-0x00000000052E0000-0x00000000052EA000-memory.dmp

      Filesize

      40KB

    • memory/4516-5-0x00000000746F0000-0x0000000074EA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4516-6-0x00000000054C0000-0x00000000054D2000-memory.dmp

      Filesize

      72KB

    • memory/4516-7-0x00000000746FE000-0x00000000746FF000-memory.dmp

      Filesize

      4KB

    • memory/4516-8-0x00000000746F0000-0x0000000074EA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4516-0-0x00000000746FE000-0x00000000746FF000-memory.dmp

      Filesize

      4KB

    • memory/4516-9-0x00000000055F0000-0x00000000055FE000-memory.dmp

      Filesize

      56KB

    • memory/4516-1-0x0000000000770000-0x0000000000824000-memory.dmp

      Filesize

      720KB

    • memory/4516-15-0x00000000746F0000-0x0000000074EA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4516-11-0x0000000009010000-0x00000000090AC000-memory.dmp

      Filesize

      624KB

    • memory/4528-12-0x0000000000400000-0x000000000044A000-memory.dmp

      Filesize

      296KB

    • memory/4528-16-0x00000000746F0000-0x0000000074EA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4528-17-0x00000000746F0000-0x0000000074EA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4528-18-0x00000000746F0000-0x0000000074EA0000-memory.dmp

      Filesize

      7.7MB

    • memory/4528-19-0x0000000006580000-0x0000000006742000-memory.dmp

      Filesize

      1.8MB

    • memory/4528-20-0x0000000006400000-0x0000000006450000-memory.dmp

      Filesize

      320KB

    • memory/4528-21-0x0000000006C80000-0x00000000071AC000-memory.dmp

      Filesize

      5.2MB