Analysis
- max time kernel
121s - max time network
122s - platform
windows7_x64 - resource
win7-20240903-en - resource tags
- submitted
11/11/2024, 19:01
General
- Target 64259b9c7add94c44c563a04df7560c950413b5270db25cde2e7013e094cede2.exe
- Size 768KB
- Sample241111-xpn4basrdx
- SHA256 64259b9c7add94c44c563a04df7560c950413b5270db25cde2e7013e094cede2
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.topcats.com
-
Port
587
-
Username
-
Password
SpurS21?
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
- 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.
- 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 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 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\64259b9c7add94c44c563a04df7560c950413b5270db25cde2e7013e094cede2.exe"C:\Users\Admin\AppData\Local\Temp\64259b9c7add94c44c563a04df7560c950413b5270db25cde2e7013e094cede2.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\xHETYXWFB.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xHETYXWFB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC9B.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\64259b9c7add94c44c563a04df7560c950413b5270db25cde2e7013e094cede2.exe"C:\Users\Admin\AppData\Local\Temp\64259b9c7add94c44c563a04df7560c950413b5270db25cde2e7013e094cede2.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
tmpBC9B.tmp
memory/2740-24-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2740-21-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2740-17-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2740-15-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2740-25-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2740-23-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2740-19-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2740-26-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2788-2-0x0000000074910000-0x0000000074FFE000-memory.dmp
memory/2788-1-0x0000000000B70000-0x0000000000C34000-memory.dmp
memory/2788-7-0x0000000005E80000-0x0000000005F04000-memory.dmp
memory/2788-0-0x000000007491E000-0x000000007491F000-memory.dmp
memory/2788-6-0x0000000000460000-0x0000000000470000-memory.dmp
memory/2788-5-0x0000000074910000-0x0000000074FFE000-memory.dmp
memory/2788-4-0x000000007491E000-0x000000007491F000-memory.dmp
memory/2788-3-0x0000000000400000-0x0000000000422000-memory.dmp
memory/2788-27-0x0000000074910000-0x0000000074FFE000-memory.dmp