Analysis

  • max time kernel
    129s
  • max time network
    146s
  • 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 11:30

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 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 11 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:5008
    • 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:1692
    • 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:2728

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zvsoioni.wyw.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • memory/1692-51-0x0000000007630000-0x000000000763A000-memory.dmp

    Filesize

    40KB

  • memory/1692-50-0x00000000075C0000-0x00000000075DA000-memory.dmp

    Filesize

    104KB

  • memory/1692-23-0x0000000005B70000-0x0000000005BD6000-memory.dmp

    Filesize

    408KB

  • memory/1692-21-0x00000000052B0000-0x00000000052D2000-memory.dmp

    Filesize

    136KB

  • memory/1692-60-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/1692-57-0x00000000078E0000-0x00000000078E8000-memory.dmp

    Filesize

    32KB

  • memory/1692-56-0x0000000007900000-0x000000000791A000-memory.dmp

    Filesize

    104KB

  • memory/1692-55-0x0000000007800000-0x0000000007814000-memory.dmp

    Filesize

    80KB

  • memory/1692-54-0x00000000077F0000-0x00000000077FE000-memory.dmp

    Filesize

    56KB

  • memory/1692-53-0x00000000077C0000-0x00000000077D1000-memory.dmp

    Filesize

    68KB

  • memory/1692-52-0x0000000007840000-0x00000000078D6000-memory.dmp

    Filesize

    600KB

  • memory/1692-34-0x00000000061F0000-0x000000000620E000-memory.dmp

    Filesize

    120KB

  • memory/1692-49-0x0000000007C00000-0x000000000827A000-memory.dmp

    Filesize

    6.5MB

  • memory/1692-48-0x0000000007270000-0x0000000007313000-memory.dmp

    Filesize

    652KB

  • memory/1692-47-0x0000000007250000-0x000000000726E000-memory.dmp

    Filesize

    120KB

  • memory/1692-37-0x0000000070900000-0x000000007094C000-memory.dmp

    Filesize

    304KB

  • memory/1692-19-0x0000000005440000-0x0000000005A68000-memory.dmp

    Filesize

    6.2MB

  • memory/1692-20-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/1692-16-0x00000000028F0000-0x0000000002926000-memory.dmp

    Filesize

    216KB

  • memory/1692-22-0x00000000053D0000-0x0000000005436000-memory.dmp

    Filesize

    408KB

  • memory/1692-36-0x0000000007210000-0x0000000007242000-memory.dmp

    Filesize

    200KB

  • memory/1692-35-0x0000000006290000-0x00000000062DC000-memory.dmp

    Filesize

    304KB

  • memory/1692-18-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/1692-33-0x0000000005E50000-0x00000000061A4000-memory.dmp

    Filesize

    3.3MB

  • memory/2728-12-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/2728-13-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/2728-62-0x00000000066F0000-0x00000000068B2000-memory.dmp

    Filesize

    1.8MB

  • memory/2728-63-0x0000000006590000-0x00000000065E0000-memory.dmp

    Filesize

    320KB

  • memory/2728-17-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/2728-61-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-11-0x000000000B3E0000-0x000000000B47C000-memory.dmp

    Filesize

    624KB

  • memory/5008-2-0x0000000005B30000-0x00000000060D4000-memory.dmp

    Filesize

    5.6MB

  • memory/5008-0-0x000000007462E000-0x000000007462F000-memory.dmp

    Filesize

    4KB

  • memory/5008-4-0x00000000060E0000-0x0000000006434000-memory.dmp

    Filesize

    3.3MB

  • memory/5008-10-0x0000000008BE0000-0x0000000008C6E000-memory.dmp

    Filesize

    568KB

  • memory/5008-9-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-8-0x000000007462E000-0x000000007462F000-memory.dmp

    Filesize

    4KB

  • memory/5008-7-0x0000000008740000-0x0000000008758000-memory.dmp

    Filesize

    96KB

  • memory/5008-6-0x0000000005790000-0x000000000579A000-memory.dmp

    Filesize

    40KB

  • memory/5008-5-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-15-0x0000000074620000-0x0000000074DD0000-memory.dmp

    Filesize

    7.7MB

  • memory/5008-3-0x0000000005620000-0x00000000056B2000-memory.dmp

    Filesize

    584KB

  • memory/5008-1-0x0000000000B30000-0x0000000000C00000-memory.dmp

    Filesize

    832KB