Analysis
- max time kernel
141s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
25/10/2024, 02:12
General
- Target b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35.exe
- Size 785KB
- Sample241025-cm2w6ssfrb
- SHA256 b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35
Malware Config
Extracted
-
vipkeylogger
-
https://api.telegram.org/bot7902160942:AAGa4NniMhqzlNHvfBDtJeHrHFJi_wqVTDY/sendMessage?chat_id=7698865320
Signatures
- 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.
- 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 1 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
- 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 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\b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35.exe"C:\Users\Admin\AppData\Local\Temp\b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35.exe"C:\Users\Admin\AppData\Local\Temp\b77de0fb855cd859678fd1d16e03af3114cde9b3f0636d0fb7b9674eae14fd35.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 v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
System.dll
memory/408-9-0x0000000005F10000-0x0000000007A1B000-memory.dmp
memory/408-10-0x0000000077991000-0x0000000077AB1000-memory.dmp
memory/408-11-0x0000000010004000-0x0000000010005000-memory.dmp
memory/408-12-0x0000000005F10000-0x0000000007A1B000-memory.dmp
memory/408-13-0x0000000005F10000-0x0000000007A1B000-memory.dmp
memory/4576-14-0x00000000016E0000-0x00000000031EB000-memory.dmp
memory/4576-15-0x0000000077A18000-0x0000000077A19000-memory.dmp
memory/4576-16-0x00000000016E0000-0x00000000031EB000-memory.dmp
memory/4576-17-0x0000000077A35000-0x0000000077A36000-memory.dmp
memory/4576-30-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/4576-31-0x0000000000480000-0x00000000016D4000-memory.dmp
memory/4576-32-0x0000000000480000-0x00000000004C8000-memory.dmp
memory/4576-33-0x0000000035E50000-0x00000000363F4000-memory.dmp
memory/4576-34-0x0000000036400000-0x000000003649C000-memory.dmp
memory/4576-35-0x0000000077991000-0x0000000077AB1000-memory.dmp
memory/4576-37-0x00000000368C0000-0x0000000036A82000-memory.dmp
memory/4576-38-0x0000000036AB0000-0x0000000036B00000-memory.dmp
memory/4576-39-0x0000000036B90000-0x0000000036C22000-memory.dmp
memory/4576-40-0x0000000036C60000-0x0000000036C6A000-memory.dmp