Analysis
- max time kernel
134s - max time network
102s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 02:44
General
- Target ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a.exe
- Size 903KB
- Sample240607-c8a1ksgd4y
- SHA256 ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.medicalhome.com.pe
-
Port
587
-
Username
-
Password
MHinfo01
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
- Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 1 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.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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.
- Adds Run key to start application 2 TTPs 1 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 SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a.exe"C:\Users\Admin\AppData\Local\Temp\ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- 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\Local\Temp\ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Users\Admin\AppData\Local\Temp\ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a.exe"C:\Users\Admin\AppData\Local\Temp\ce45391f81f68e4bd77aff84b26082ed86a7be5a2e1003e4d8ff8ef7763b9d9a.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_zztcqyvs.tpv.ps1
memory/220-12-0x0000000000400000-0x0000000000476000-memory.dmp
memory/220-65-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/220-54-0x0000000006E30000-0x0000000006E80000-memory.dmp
memory/220-18-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/220-16-0x0000000005910000-0x0000000005976000-memory.dmp
memory/220-15-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4080-53-0x0000000006F60000-0x0000000006F7A000-memory.dmp
memory/4080-33-0x0000000005570000-0x00000000058C4000-memory.dmp
memory/4080-64-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4080-61-0x0000000007280000-0x0000000007288000-memory.dmp
memory/4080-60-0x00000000072A0000-0x00000000072BA000-memory.dmp
memory/4080-59-0x00000000071A0000-0x00000000071B4000-memory.dmp
memory/4080-58-0x0000000007190000-0x000000000719E000-memory.dmp
memory/4080-57-0x0000000007160000-0x0000000007171000-memory.dmp
memory/4080-17-0x0000000002320000-0x0000000002356000-memory.dmp
memory/4080-56-0x00000000071E0000-0x0000000007276000-memory.dmp
memory/4080-19-0x0000000004E40000-0x0000000005468000-memory.dmp
memory/4080-55-0x0000000006FD0000-0x0000000006FDA000-memory.dmp
memory/4080-21-0x0000000004C00000-0x0000000004C66000-memory.dmp
memory/4080-20-0x0000000004B60000-0x0000000004B82000-memory.dmp
memory/4080-22-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4080-52-0x00000000075A0000-0x0000000007C1A000-memory.dmp
memory/4080-32-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4080-34-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4080-35-0x0000000005C10000-0x0000000005C2E000-memory.dmp
memory/4080-51-0x0000000006E20000-0x0000000006EC3000-memory.dmp
memory/4080-36-0x00000000060C0000-0x000000000610C000-memory.dmp
memory/4080-40-0x0000000070C90000-0x0000000070CDC000-memory.dmp
memory/4080-39-0x00000000061D0000-0x0000000006202000-memory.dmp
memory/4080-50-0x0000000006240000-0x000000000625E000-memory.dmp
memory/4364-6-0x00000000063A0000-0x00000000063B6000-memory.dmp
memory/4364-3-0x00000000050D0000-0x0000000005162000-memory.dmp
memory/4364-0-0x000000007501E000-0x000000007501F000-memory.dmp
memory/4364-2-0x00000000055A0000-0x0000000005B44000-memory.dmp
memory/4364-4-0x0000000005190000-0x000000000519A000-memory.dmp
memory/4364-5-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4364-8-0x00000000063E0000-0x00000000063F0000-memory.dmp
memory/4364-14-0x0000000075010000-0x00000000757C0000-memory.dmp
memory/4364-7-0x00000000063C0000-0x00000000063CE000-memory.dmp
memory/4364-11-0x000000007501E000-0x000000007501F000-memory.dmp
memory/4364-10-0x0000000006A80000-0x0000000006B1C000-memory.dmp
memory/4364-9-0x0000000006400000-0x00000000064B8000-memory.dmp
memory/4364-1-0x0000000000730000-0x0000000000814000-memory.dmp