Analysis
- max time kernel
95s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
24/01/2025, 07:47
General
- Target RH-098765000.exe
- Size 745KB
- Sample250124-jmh8dsxnfy
- SHA256 89260b07ae5d0858db8a14a8b7cd9e2c1bcd064f5596e7e0cea1665c7f0c496b
Malware Config
Extracted
-
Protocol
ftp
-
Host
ftp.antoniomayol.com
-
Port
21
-
Username
-
Password
cMhKDQUk1{;%
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.antoniomayol.com:21
-
Port
21
-
Username
-
Password
cMhKDQUk1{;%
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 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 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\RH-098765000.exe"C:\Users\Admin\AppData\Local\Temp\RH-098765000.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\RH-098765000.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\YUNDEs.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\YUNDEs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4AE.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\RH-098765000.exe"C:\Users\Admin\AppData\Local\Temp\RH-098765000.exe"2⤵
-
-
C:\Users\Admin\AppData\Local\Temp\RH-098765000.exe"C:\Users\Admin\AppData\Local\Temp\RH-098765000.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_bokn2han.lbl.ps1
tmp4AE.tmp
memory/1196-45-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1196-18-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1196-77-0x00000000076E0000-0x0000000007776000-memory.dmp
memory/1196-78-0x0000000007660000-0x0000000007671000-memory.dmp
memory/1196-82-0x0000000007780000-0x0000000007788000-memory.dmp
memory/1196-89-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1196-64-0x0000000071260000-0x00000000712AC000-memory.dmp
memory/1196-15-0x0000000002810000-0x0000000002846000-memory.dmp
memory/1196-16-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1360-10-0x0000000004900000-0x0000000004986000-memory.dmp
memory/1360-7-0x00000000062C0000-0x00000000062DE000-memory.dmp
memory/1360-0-0x0000000074B9E000-0x0000000074B9F000-memory.dmp
memory/1360-9-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1360-1-0x00000000003B0000-0x0000000000470000-memory.dmp
memory/1360-2-0x0000000005470000-0x0000000005A14000-memory.dmp
memory/1360-8-0x0000000074B9E000-0x0000000074B9F000-memory.dmp
memory/1360-5-0x0000000004E50000-0x0000000004E5A000-memory.dmp
memory/1360-4-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/1360-3-0x0000000004EC0000-0x0000000004F52000-memory.dmp
memory/1360-6-0x0000000005120000-0x00000000051BC000-memory.dmp
memory/1360-48-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/4232-90-0x0000000006D20000-0x0000000006D70000-memory.dmp
memory/4232-46-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4828-21-0x0000000004C60000-0x0000000004CC6000-memory.dmp
memory/4828-50-0x0000000005AC0000-0x0000000005B0C000-memory.dmp
memory/4828-51-0x00000000069D0000-0x0000000006A02000-memory.dmp
memory/4828-62-0x0000000006990000-0x00000000069AE000-memory.dmp
memory/4828-52-0x0000000071260000-0x00000000712AC000-memory.dmp
memory/4828-63-0x0000000006C10000-0x0000000006CB3000-memory.dmp
memory/4828-49-0x0000000005A20000-0x0000000005A3E000-memory.dmp
memory/4828-74-0x0000000007390000-0x0000000007A0A000-memory.dmp
memory/4828-75-0x0000000006D50000-0x0000000006D6A000-memory.dmp
memory/4828-76-0x0000000006DC0000-0x0000000006DCA000-memory.dmp
memory/4828-44-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/4828-24-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/4828-79-0x0000000006F80000-0x0000000006F8E000-memory.dmp
memory/4828-80-0x0000000006F90000-0x0000000006FA4000-memory.dmp
memory/4828-81-0x0000000007090000-0x00000000070AA000-memory.dmp
memory/4828-23-0x00000000054C0000-0x0000000005814000-memory.dmp
memory/4828-22-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/4828-19-0x0000000004950000-0x0000000004972000-memory.dmp
memory/4828-88-0x0000000074B90000-0x0000000075340000-memory.dmp
memory/4828-20-0x0000000004B70000-0x0000000004BD6000-memory.dmp
memory/4828-17-0x0000000004E90000-0x00000000054B8000-memory.dmp