Analysis
- max time kernel
120s - max time network
121s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
07/06/2024, 01:50
General
- Target 7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe
- Size 764KB
- Sample240607-b9j47sff7x
- SHA256 7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad
Malware Config
Extracted
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agenttesla
-
Protocol
smtp
-
Host
nffplp.com
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Port
587
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Username
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Password
$Nke%8XIIDtm
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 5 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 5 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 5 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 5 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 5 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 5 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 5 IoCs
- 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 2 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).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 6 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\rUaSsXwbr.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rUaSsXwbr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp40A8.tmp"2⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"C:\Users\Admin\AppData\Local\Temp\7a5e05a641c25842d65bf9206fffa0acdae7197fa204c4fda9ee801ff7c666ad.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
tmp40A8.tmp
memory/1296-4-0x0000000000460000-0x0000000000476000-memory.dmp
memory/1296-28-0x0000000074950000-0x000000007503E000-memory.dmp
memory/1296-3-0x00000000050D0000-0x0000000005188000-memory.dmp
memory/1296-0-0x000000007495E000-0x000000007495F000-memory.dmp
memory/1296-6-0x0000000000490000-0x00000000004A0000-memory.dmp
memory/1296-5-0x0000000000480000-0x000000000048E000-memory.dmp
memory/1296-7-0x0000000005560000-0x00000000055E4000-memory.dmp
memory/1296-1-0x0000000000290000-0x0000000000350000-memory.dmp
memory/1296-2-0x0000000074950000-0x000000007503E000-memory.dmp
memory/2516-25-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2516-23-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2516-22-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2516-21-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2516-19-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2516-17-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2516-15-0x0000000000400000-0x0000000000442000-memory.dmp
memory/2516-13-0x0000000000400000-0x0000000000442000-memory.dmp