Analysis
- max time kernel
292s - max time network
288s - platform
windows10-2004_x64 - resource
win10v2004-20250502-en - resource tags
- submitted
02/07/2025, 04:04
General
- Target Factura sillón María.exe
- Size 609KB
- Sample250702-em2brasnv2
- SHA256 4815643bf9e3c51ae12955f15fe3a7a54fb41b37bc1cdcf41ad6b7b1b52adc95
Malware Config
Extracted
-
vipkeylogger
-
Protocol
smtp
-
Host
smtp.ionos.es
-
Port
587
-
Username
-
Password
070922*Bn
-
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 10 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
- Drops file in Program Files directory 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\Factura sillón María.exe"C:\Users\Admin\AppData\Local\Temp\Factura sillón María.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Factura sillón María.exe"C:\Users\Admin\AppData\Local\Temp\Factura sillón María.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 v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
LangDLL.dll
System.dll
memory/5076-49-0x0000000004A30000-0x0000000007C8A000-memory.dmp
memory/5076-50-0x0000000010004000-0x0000000010005000-memory.dmp
memory/5076-51-0x0000000004A30000-0x0000000007C8A000-memory.dmp
memory/5856-64-0x0000000000490000-0x00000000004D8000-memory.dmp
memory/5856-62-0x0000000000490000-0x00000000016E4000-memory.dmp
memory/5856-63-0x0000000000490000-0x00000000016E4000-memory.dmp
memory/5856-52-0x00000000016F0000-0x000000000494A000-memory.dmp
memory/5856-65-0x0000000037600000-0x0000000037BA4000-memory.dmp
memory/5856-66-0x0000000037440000-0x00000000374DC000-memory.dmp
memory/5856-67-0x00000000016F0000-0x000000000494A000-memory.dmp
memory/5856-68-0x0000000038120000-0x00000000382E2000-memory.dmp
memory/5856-69-0x0000000038310000-0x0000000038360000-memory.dmp
memory/5856-71-0x0000000038520000-0x00000000385B2000-memory.dmp
memory/5856-72-0x0000000038610000-0x000000003861A000-memory.dmp