Analysis
- max time kernel
143s - max time network
141s - platform
windows11-21h2_x64 - resource
win11-20250610-en - resource tags
- submitted
29/09/2025, 07:02
General
- Target doc002209025.exe
- Size 805KB
- Sample250929-htt3ssxvez
- SHA256 88147aad7aa96d552ff975e54a28a013be2a82510226daf9e5bba144912e8ac3
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.indra-precision.co.th
-
Port
21
-
Username
-
Password
(8VnO^JKZAew
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Loads dropped DLL 1 IoCs
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- 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.
- 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
- Drops file in Windows directory 1 IoCs
- 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\doc002209025.exe"C:\Users\Admin\AppData\Local\Temp\doc002209025.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\doc002209025.exe"C:\Users\Admin\AppData\Local\Temp\doc002209025.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v16
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
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Downloads
System.dll
memory/2180-19-0x0000000074345000-0x0000000074346000-memory.dmp
memory/2372-20-0x0000000077638000-0x0000000077639000-memory.dmp
memory/2372-21-0x00000000776CB000-0x00000000776CC000-memory.dmp
memory/2372-33-0x0000000000450000-0x0000000001767000-memory.dmp
memory/2372-34-0x0000000000450000-0x0000000000492000-memory.dmp
memory/2372-35-0x00000000390B0000-0x0000000039656000-memory.dmp
memory/2372-36-0x0000000036CE0000-0x0000000036CF0000-memory.dmp
memory/2372-37-0x0000000039660000-0x00000000396C6000-memory.dmp
memory/2372-39-0x0000000039DA0000-0x0000000039E32000-memory.dmp
memory/2372-40-0x0000000039E70000-0x0000000039EC0000-memory.dmp
memory/2372-41-0x0000000039F00000-0x0000000039F0A000-memory.dmp
memory/2372-42-0x00000000776CB000-0x00000000776CC000-memory.dmp
memory/2372-43-0x0000000036CE0000-0x0000000036CF0000-memory.dmp