Analysis
- max time kernel
148s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
07/12/2024, 04:32
General
- Target Overdue_payment.pdf.exe
- Size 839KB
- Sample241207-e5ynksskgr
- SHA256 c6ca7a0c812b140b8d3e1f7ceb12f0efe6bc0f564c6312814bc9dba1255e8788
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.iaa-airferight.com
-
Port
587
-
Username
-
Password
webmaster
-
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 2 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 3 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 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 5 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 8 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Overdue_payment.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Overdue_payment.pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- 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\Overdue_payment.pdf.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\lxZwKFTCWa.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\lxZwKFTCWa" /XML "C:\Users\Admin\AppData\Local\Temp\tmpBC6A.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\Overdue_payment.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Overdue_payment.pdf.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\Overdue_payment.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Overdue_payment.pdf.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
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
powershell.exe.log
StartupProfileData-NonInteractive
__PSScriptPolicyTest_0lvn4522.leg.ps1
tmpBC6A.tmp
memory/2164-74-0x0000000007CC0000-0x000000000833A000-memory.dmp
memory/2164-88-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/2164-63-0x0000000070A60000-0x0000000070AAC000-memory.dmp
memory/2164-32-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/2164-76-0x00000000078F0000-0x0000000007986000-memory.dmp
memory/2164-77-0x0000000007870000-0x0000000007881000-memory.dmp
memory/2164-79-0x00000000078B0000-0x00000000078C4000-memory.dmp
memory/2164-19-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/3764-10-0x00000000061D0000-0x0000000006256000-memory.dmp
memory/3764-8-0x00000000743CE000-0x00000000743CF000-memory.dmp
memory/3764-2-0x0000000005050000-0x00000000055F4000-memory.dmp
memory/3764-6-0x0000000004EB0000-0x0000000004F4C000-memory.dmp
memory/3764-3-0x0000000004B40000-0x0000000004BD2000-memory.dmp
memory/3764-9-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/3764-4-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/3764-1-0x00000000001B0000-0x0000000000286000-memory.dmp
memory/3764-0-0x00000000743CE000-0x00000000743CF000-memory.dmp
memory/3764-38-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/3764-7-0x0000000004FF0000-0x0000000005008000-memory.dmp
memory/3764-5-0x0000000004E00000-0x0000000004E0A000-memory.dmp
memory/4124-31-0x0000000000400000-0x0000000000440000-memory.dmp
memory/4124-89-0x0000000006F00000-0x0000000006F50000-memory.dmp
memory/4888-48-0x00000000061B0000-0x00000000061CE000-memory.dmp
memory/4888-49-0x0000000006270000-0x00000000062BC000-memory.dmp
memory/4888-62-0x00000000067D0000-0x0000000006873000-memory.dmp
memory/4888-37-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/4888-61-0x0000000006760000-0x000000000677E000-memory.dmp
memory/4888-51-0x0000000070A60000-0x0000000070AAC000-memory.dmp
memory/4888-50-0x0000000006780000-0x00000000067B2000-memory.dmp
memory/4888-22-0x00000000059F0000-0x0000000005A56000-memory.dmp
memory/4888-73-0x00000000074D0000-0x00000000074EA000-memory.dmp
memory/4888-75-0x0000000007540000-0x000000000754A000-memory.dmp
memory/4888-23-0x0000000005B10000-0x0000000005B76000-memory.dmp
memory/4888-30-0x0000000005CB0000-0x0000000006004000-memory.dmp
memory/4888-78-0x0000000007700000-0x000000000770E000-memory.dmp
memory/4888-21-0x00000000052A0000-0x00000000052C2000-memory.dmp
memory/4888-80-0x0000000007810000-0x000000000782A000-memory.dmp
memory/4888-81-0x00000000077F0000-0x00000000077F8000-memory.dmp
memory/4888-18-0x00000000053C0000-0x00000000059E8000-memory.dmp
memory/4888-17-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/4888-16-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/4888-87-0x00000000743C0000-0x0000000074B70000-memory.dmp
memory/4888-15-0x0000000002840000-0x0000000002876000-memory.dmp