Analysis
- max time kernel
144s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
11/11/2024, 01:34
General
- Target cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe
- Size 1.1MB
- Sample241111-by72wszdrh
- SHA256 cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.showpiece.trillennium.biz
-
Port
587
-
Username
-
Password
3KJ[T.3]fsSW
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- 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 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
- Drops file in Program Files directory 2 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"C:\Users\Admin\AppData\Local\Temp\cf3c06fc4ac2aa1437f095c70671e38c9b8fb7c553ee19899b3183aa11843aad.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
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
System.dll
memory/540-15-0x0000000004DC0000-0x0000000006C22000-memory.dmp
memory/540-17-0x00000000771E1000-0x0000000077301000-memory.dmp
memory/540-16-0x0000000004DC0000-0x0000000006C22000-memory.dmp
memory/540-18-0x0000000073E35000-0x0000000073E36000-memory.dmp
memory/540-19-0x0000000004DC0000-0x0000000006C22000-memory.dmp
memory/5088-20-0x0000000001A80000-0x00000000038E2000-memory.dmp
memory/5088-33-0x0000000000820000-0x0000000001A74000-memory.dmp
memory/5088-34-0x0000000001A80000-0x00000000038E2000-memory.dmp
memory/5088-35-0x0000000000820000-0x0000000001A74000-memory.dmp
memory/5088-36-0x0000000000820000-0x0000000000860000-memory.dmp
memory/5088-37-0x00000000366F0000-0x0000000036C94000-memory.dmp
memory/5088-38-0x0000000036580000-0x00000000365E6000-memory.dmp
memory/5088-39-0x0000000037480000-0x00000000374D0000-memory.dmp
memory/5088-40-0x00000000374D0000-0x0000000037562000-memory.dmp
memory/5088-41-0x0000000037730000-0x000000003773A000-memory.dmp