Analysis
- max time kernel
148s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
28/10/2024, 01:01
General
- Target rFa24c148.exe
- Size 981KB
- Sample241028-bc75rstqev
- SHA256 0b7ba80811d300aefe42de77b7b8fb2d5b6f9a8d4f2cf3d1213b6fead5efb59b
Malware Config
Extracted
-
vipkeylogger
-
https://api.telegram.org/bot8148338634:AAFvLNrhxaF7bMPzQMLbUnueRMJvDIi5kcU/sendMessage?chat_id=7698865320
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 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
- 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\rFa24c148.exe"C:\Users\Admin\AppData\Local\Temp\rFa24c148.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\rFa24c148.exe"C:\Users\Admin\AppData\Local\Temp\rFa24c148.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/1336-14-0x0000000005450000-0x0000000006A13000-memory.dmp
memory/1336-15-0x0000000077D01000-0x0000000077E21000-memory.dmp
memory/1336-16-0x0000000010004000-0x0000000010005000-memory.dmp
memory/1336-17-0x0000000005450000-0x0000000006A13000-memory.dmp
memory/4576-18-0x0000000001700000-0x0000000002CC3000-memory.dmp
memory/4576-19-0x0000000077D88000-0x0000000077D89000-memory.dmp
memory/4576-20-0x0000000077DA5000-0x0000000077DA6000-memory.dmp
memory/4576-33-0x0000000001700000-0x0000000002CC3000-memory.dmp
memory/4576-34-0x00000000004A0000-0x00000000016F4000-memory.dmp
memory/4576-35-0x00000000004A0000-0x00000000004E8000-memory.dmp
memory/4576-36-0x0000000035900000-0x0000000035EA4000-memory.dmp
memory/4576-37-0x0000000035EF0000-0x0000000035F8C000-memory.dmp
memory/4576-39-0x0000000077D01000-0x0000000077E21000-memory.dmp
memory/4576-38-0x00000000004A0000-0x00000000016F4000-memory.dmp
memory/4576-40-0x0000000036510000-0x00000000366D2000-memory.dmp
memory/4576-41-0x00000000366E0000-0x0000000036730000-memory.dmp
memory/4576-43-0x00000000367C0000-0x0000000036852000-memory.dmp
memory/4576-44-0x0000000036890000-0x000000003689A000-memory.dmp