Analysis

  • max time kernel
    127s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2024 11:33

General

  • Target

    tmp1u2e_efl.exe

  • Size

    803KB

  • MD5

    4123e0b7da19f26d9e99e29e7a618911

  • SHA1

    430b1daf4bb38220b3dc85a1b34c0b1b532a1f01

  • SHA256

    6c9e54f7f42bd5c8c7e8dc0c34ba0961d95513db27c854ce83e8206d6f4c1b9b

  • SHA512

    c5b588612b4d58231e74b10fb2bdf1369aa03752333950ef8b61a43f2e2b64bed8da52a1ec68c63030a6f3686a21c43eccb0562d873fa05e6780d24242f58aa8

  • SSDEEP

    24576:61MqxjvCNra98jjW4wYOI5fHsAbXWgaoOz:6mqIMQDjOCTWg

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.

  • Checks computer location settings 2 TTPs 1 IoCs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2100
    • 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\tmp1u2e_efl.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1100
    • C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe
      "C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe"
      2⤵
        PID:4912
      • C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.exe
        "C:\Users\Admin\AppData\Local\Temp\tmp1u2e_efl.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:3736

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_h01afjnr.hfm.ps1

      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • memory/1100-51-0x0000000006B00000-0x0000000006B1A000-memory.dmp

      Filesize

      104KB

    • memory/1100-38-0x0000000070B80000-0x0000000070BCC000-memory.dmp

      Filesize

      304KB

    • memory/1100-56-0x0000000006F50000-0x0000000006F64000-memory.dmp

      Filesize

      80KB

    • memory/1100-27-0x00000000053F0000-0x0000000005744000-memory.dmp

      Filesize

      3.3MB

    • memory/1100-55-0x0000000006F40000-0x0000000006F4E000-memory.dmp

      Filesize

      56KB

    • memory/1100-54-0x0000000006F10000-0x0000000006F21000-memory.dmp

      Filesize

      68KB

    • memory/1100-53-0x0000000006F90000-0x0000000007026000-memory.dmp

      Filesize

      600KB

    • memory/1100-52-0x0000000006D80000-0x0000000006D8A000-memory.dmp

      Filesize

      40KB

    • memory/1100-50-0x00000000073F0000-0x0000000007A6A000-memory.dmp

      Filesize

      6.5MB

    • memory/1100-49-0x00000000069B0000-0x0000000006A53000-memory.dmp

      Filesize

      652KB

    • memory/1100-48-0x0000000005F80000-0x0000000005F9E000-memory.dmp

      Filesize

      120KB

    • memory/1100-57-0x0000000007050000-0x000000000706A000-memory.dmp

      Filesize

      104KB

    • memory/1100-37-0x0000000005FA0000-0x0000000005FD2000-memory.dmp

      Filesize

      200KB

    • memory/1100-15-0x00000000020D0000-0x0000000002106000-memory.dmp

      Filesize

      216KB

    • memory/1100-34-0x00000000059D0000-0x00000000059EE000-memory.dmp

      Filesize

      120KB

    • memory/1100-18-0x0000000004B30000-0x0000000005158000-memory.dmp

      Filesize

      6.2MB

    • memory/1100-17-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/1100-61-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/1100-21-0x0000000005280000-0x00000000052E6000-memory.dmp

      Filesize

      408KB

    • memory/1100-20-0x0000000005210000-0x0000000005276000-memory.dmp

      Filesize

      408KB

    • memory/1100-28-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/1100-33-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/1100-35-0x0000000005A00000-0x0000000005A4C000-memory.dmp

      Filesize

      304KB

    • memory/1100-58-0x0000000007030000-0x0000000007038000-memory.dmp

      Filesize

      32KB

    • memory/1100-19-0x0000000004A30000-0x0000000004A52000-memory.dmp

      Filesize

      136KB

    • memory/2100-9-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/2100-16-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/2100-2-0x0000000005500000-0x0000000005AA4000-memory.dmp

      Filesize

      5.6MB

    • memory/2100-1-0x0000000000450000-0x0000000000520000-memory.dmp

      Filesize

      832KB

    • memory/2100-11-0x000000000AD10000-0x000000000ADAC000-memory.dmp

      Filesize

      624KB

    • memory/2100-10-0x0000000008510000-0x000000000859E000-memory.dmp

      Filesize

      568KB

    • memory/2100-4-0x0000000004FF0000-0x0000000005344000-memory.dmp

      Filesize

      3.3MB

    • memory/2100-0-0x000000007515E000-0x000000007515F000-memory.dmp

      Filesize

      4KB

    • memory/2100-8-0x000000007515E000-0x000000007515F000-memory.dmp

      Filesize

      4KB

    • memory/2100-7-0x0000000008060000-0x0000000008078000-memory.dmp

      Filesize

      96KB

    • memory/2100-6-0x0000000005AC0000-0x0000000005ACA000-memory.dmp

      Filesize

      40KB

    • memory/2100-5-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/2100-3-0x0000000004F50000-0x0000000004FE2000-memory.dmp

      Filesize

      584KB

    • memory/3736-14-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/3736-64-0x00000000068B0000-0x0000000006900000-memory.dmp

      Filesize

      320KB

    • memory/3736-36-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/3736-62-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB

    • memory/3736-63-0x0000000006A20000-0x0000000006BE2000-memory.dmp

      Filesize

      1.8MB

    • memory/3736-12-0x0000000000400000-0x0000000000448000-memory.dmp

      Filesize

      288KB

    • memory/3736-65-0x0000000075150000-0x0000000075900000-memory.dmp

      Filesize

      7.7MB