Analysis
- max time kernel
149s - max time network
129s - platform
windows11-21h2_x64 - resource
win11-20251015-en - resource tags
- submitted
08/12/2025, 15:59
General
- Target bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe
- Size 867KB
- Sample251208-tfbvvaen5x
- SHA256 bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70
Malware Config
Extracted
-
vipkeylogger
-
Protocol
smtp
-
Host
mail.bcnhaiguan.com
-
Port
587
-
Username
-
Password
1952a2013A
-
Email to
Signatures
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
- Vipkeylogger family
- Loads dropped DLL 2 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
- 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\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"C:\Users\Admin\AppData\Local\Temp\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"C:\Users\Admin\AppData\Local\Temp\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"C:\Users\Admin\AppData\Local\Temp\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.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\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"C:\Users\Admin\AppData\Local\Temp\bac00be71feb7f3f3091eb54d53771e21eee2c422f148e8524bb09e1827e2b70.exe"3⤵
-
-
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/1284-35-0x0000000002AC0000-0x0000000003569000-memory.dmp
memory/1284-36-0x0000000074BD5000-0x0000000074BD6000-memory.dmp
memory/5152-37-0x0000000001810000-0x00000000022B9000-memory.dmp
memory/5152-38-0x0000000077C58000-0x0000000077C59000-memory.dmp
memory/5152-40-0x0000000077C6B000-0x0000000077C6C000-memory.dmp
memory/5152-39-0x0000000077CEB000-0x0000000077CEC000-memory.dmp
memory/5152-52-0x00000000004F0000-0x0000000001807000-memory.dmp
memory/5152-54-0x0000000077BC1000-0x0000000077CE3000-memory.dmp
memory/5152-53-0x0000000001810000-0x00000000022B9000-memory.dmp
memory/5152-55-0x0000000077BC1000-0x0000000077CE3000-memory.dmp
memory/5152-56-0x00000000004F0000-0x0000000000532000-memory.dmp
memory/5152-57-0x0000000035240000-0x00000000357E6000-memory.dmp
memory/5152-58-0x00000000350D0000-0x000000003516C000-memory.dmp
memory/5152-60-0x0000000077CEB000-0x0000000077CEC000-memory.dmp
memory/5152-61-0x0000000035C80000-0x0000000035E42000-memory.dmp
memory/5152-62-0x0000000035EA0000-0x0000000035EF0000-memory.dmp
memory/5152-64-0x0000000036060000-0x00000000360F2000-memory.dmp
memory/5152-65-0x0000000036140000-0x000000003614A000-memory.dmp