Analysis
- max time kernel
141s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
26/11/2024, 02:34
General
- Target 5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe
- Size 536KB
- Sample241126-c2ys3awnfk
- SHA256 5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383
Malware Config
Extracted
-
Protocol
smtp
-
Host
mail.cipmach.com
-
Port
587
-
Username
-
Password
mail@2019$
Extracted
-
vipkeylogger
-
Protocol
smtp
-
Host
mail.cipmach.com
-
Port
587
-
Username
-
Password
mail@2019$
-
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 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
- 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 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\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe"C:\Users\Admin\AppData\Local\Temp\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.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\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.exe"C:\Users\Admin\AppData\Local\Temp\5b19a26d6e86bbcd6d454baee6ae7c77f1c4ca6017ad965eb79098308346f383.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/2340-8-0x0000000002DF0000-0x0000000005D83000-memory.dmp
memory/2340-9-0x00000000772D1000-0x00000000773F1000-memory.dmp
memory/2340-10-0x0000000002DF0000-0x0000000005D83000-memory.dmp
memory/4628-11-0x0000000001A40000-0x00000000049D3000-memory.dmp
memory/4628-12-0x00000000007E0000-0x0000000001A34000-memory.dmp
memory/4628-13-0x0000000001A40000-0x00000000049D3000-memory.dmp
memory/4628-14-0x00000000007E0000-0x0000000001A34000-memory.dmp
memory/4628-15-0x00000000007E0000-0x000000000082A000-memory.dmp
memory/4628-16-0x0000000037280000-0x0000000037824000-memory.dmp
memory/4628-17-0x0000000037830000-0x00000000378CC000-memory.dmp
memory/4628-19-0x0000000038050000-0x0000000038212000-memory.dmp
memory/4628-20-0x0000000038220000-0x0000000038270000-memory.dmp
memory/4628-21-0x00000000382D0000-0x00000000387FC000-memory.dmp
memory/4628-25-0x0000000038850000-0x00000000388E2000-memory.dmp
memory/4628-26-0x0000000038930000-0x000000003893A000-memory.dmp