Analysis
- max time kernel
144s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
13/08/2024, 23:27
General
- Target MSK332871.exe
- Size 461KB
- Sample240813-3fxa8a1eng
- SHA256 51b09071a66f4f8d1da32b279026b0f482b2ef176b288b2c87b65fbadce4ed43
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
oadc jzrw bmvr klnl
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
oadc jzrw bmvr klnl
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
- Loads dropped DLL 7 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 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 2 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
- 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\MSK332871.exe"C:\Users\Admin\AppData\Local\Temp\MSK332871.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\MSK332871.exe"C:\Users\Admin\AppData\Local\Temp\MSK332871.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 v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
LangDLL.dll
System.dll
memory/3252-36-0x00000000057F0000-0x0000000006F1C000-memory.dmp
memory/3252-28-0x00000000057F0000-0x0000000006F1C000-memory.dmp
memory/3252-29-0x00000000777B1000-0x00000000778D1000-memory.dmp
memory/3252-30-0x0000000074615000-0x0000000074616000-memory.dmp
memory/3252-32-0x00000000057F0000-0x0000000006F1C000-memory.dmp
memory/4388-31-0x00000000016C0000-0x0000000002DEC000-memory.dmp
memory/4388-34-0x0000000077855000-0x0000000077856000-memory.dmp
memory/4388-35-0x0000000000460000-0x00000000016B4000-memory.dmp
memory/4388-33-0x0000000077838000-0x0000000077839000-memory.dmp
memory/4388-37-0x0000000000460000-0x00000000004A4000-memory.dmp
memory/4388-38-0x00000000356C0000-0x0000000035C64000-memory.dmp
memory/4388-39-0x00000000355C0000-0x0000000035626000-memory.dmp
memory/4388-41-0x0000000036610000-0x0000000036660000-memory.dmp
memory/4388-42-0x0000000036670000-0x000000003670C000-memory.dmp
memory/4388-43-0x0000000036790000-0x0000000036822000-memory.dmp
memory/4388-44-0x0000000036880000-0x000000003688A000-memory.dmp
memory/4388-46-0x00000000016C0000-0x0000000002DEC000-memory.dmp
memory/4388-47-0x00000000777B1000-0x00000000778D1000-memory.dmp