Analysis
- max time kernel
149s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
04/08/2026, 12:19
General
- Target Justificante.exe
- Size 457KB
- Sample260804-pg778aem4z
- SHA256 3bdc3b84e2970207b3e67191c3665ff676a5dfdab8331e4cd4787dee7decda82
Malware Config
Extracted
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vipkeylogger
-
https://api.telegram.org/bot8952917043:AAHayCUkLWgZtiplw7yD7b94fz3VDzBV20Q/sendMessage?chat_id=8579883216
Signatures
- Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Family: VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
- 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
- Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
- Looks up external IP address via web service 1 TTPs 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
- 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 4 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Justificante.exe"C:\Users\Admin\AppData\Local\Temp\Justificante.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Justificante.exe"C:\Users\Admin\AppData\Local\Temp\Justificante.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\Justificante.exe"C:\Users\Admin\AppData\Local\Temp\Justificante.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
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Users\Admin\AppData\Local\Temp\Justificante.exe"C:\Users\Admin\AppData\Local\Temp\Justificante.exe"3⤵
-
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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/1552-25-0x00000000016E0000-0x0000000003183000-memory.dmp
memory/1552-31-0x0000000035FB0000-0x0000000036554000-memory.dmp
memory/1552-41-0x00000000374F0000-0x00000000374FA000-memory.dmp
memory/1552-15-0x00000000016E0000-0x0000000003183000-memory.dmp
memory/1552-16-0x00000000770C8000-0x00000000770C9000-memory.dmp
memory/1552-18-0x00000000770E5000-0x00000000770E6000-memory.dmp
memory/1552-17-0x0000000077169000-0x000000007716A000-memory.dmp
memory/1552-40-0x0000000037400000-0x0000000037492000-memory.dmp
memory/1552-37-0x0000000036E70000-0x000000003739C000-memory.dmp
memory/1552-29-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/1552-30-0x0000000000480000-0x00000000004CA000-memory.dmp
memory/1552-32-0x0000000033CC0000-0x0000000033D5C000-memory.dmp
memory/1552-34-0x0000000077169000-0x000000007716A000-memory.dmp
memory/1552-35-0x0000000036A80000-0x0000000036C42000-memory.dmp
memory/1552-36-0x0000000036C60000-0x0000000036CB0000-memory.dmp
memory/4736-13-0x0000000010004000-0x0000000010005000-memory.dmp
memory/4736-12-0x0000000004BB0000-0x0000000006653000-memory.dmp
memory/4736-14-0x0000000004BB0000-0x0000000006653000-memory.dmp