Analysis
- max time kernel
149s - max time network
138s - platform
windows11-21h2_x64 - resource
win11-20250619-en - resource tags
- submitted
17/10/2025, 06:04
General
- Target 251378.exe
- Size 597KB
- Sample251017-gsv32axp14
- SHA256 07ac845eee39222cc487d6dfe0a50f12874af6b05ea0390b5d6e4e4e64d3e18c
Malware Config
Extracted
-
vipkeylogger
-
Protocol
smtp
-
Host
mail.barreroygarcia.com
-
Port
587
-
Username
-
Password
Byg@20212021
-
Email to
Signatures
- VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
- Vipkeylogger family
- 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
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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 NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Drops file in Windows directory 2 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 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 WriteProcessMemory 5 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\251378.exe"C:\Users\Admin\AppData\Local\Temp\251378.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\251378.exe"C:\Users\Admin\AppData\Local\Temp\251378.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
System.dll
memory/2784-98-0x0000000074995000-0x0000000074996000-memory.dmp
memory/3592-99-0x0000000077C78000-0x0000000077C79000-memory.dmp
memory/3592-100-0x0000000077D0B000-0x0000000077D0C000-memory.dmp
memory/3592-112-0x0000000000460000-0x0000000001777000-memory.dmp
memory/3592-113-0x0000000000460000-0x00000000004A2000-memory.dmp
memory/3592-114-0x0000000038A20000-0x0000000038FC6000-memory.dmp
memory/3592-115-0x0000000038FD0000-0x000000003906C000-memory.dmp
memory/3592-117-0x0000000039110000-0x0000000039120000-memory.dmp
memory/3592-118-0x0000000077D0B000-0x0000000077D0C000-memory.dmp
memory/3592-119-0x00000000395B0000-0x0000000039772000-memory.dmp
memory/3592-120-0x00000000397B0000-0x0000000039800000-memory.dmp
memory/3592-122-0x0000000039110000-0x0000000039120000-memory.dmp
memory/3592-123-0x0000000039970000-0x0000000039A02000-memory.dmp
memory/3592-124-0x0000000039A40000-0x0000000039A4A000-memory.dmp