Analysis
- max time kernel
116s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 01:55
General
- Target 333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157.exe
- Size 789KB
- Sample240607-cck6nsgg95
- SHA256 333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
Brillium360@@
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.yandex.com
-
Port
587
-
Username
-
Password
Brillium360@@
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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 2 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).
- 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 9 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157.exe"C:\Users\Admin\AppData\Local\Temp\333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- 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\Local\Temp\333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- 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\jJrvCmqCDG.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jJrvCmqCDG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp882B.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157.exe"C:\Users\Admin\AppData\Local\Temp\333cb4bdf241bd44368898b62884b1edb83bfb7fd45b7337be44077ef395c157.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
__PSScriptPolicyTest_wryuyjtm.mm4.ps1
tmp882B.tmp
memory/448-75-0x0000000007BC0000-0x0000000007BDA000-memory.dmp
memory/448-78-0x0000000007DC0000-0x0000000007DD1000-memory.dmp
memory/448-51-0x0000000007810000-0x0000000007842000-memory.dmp
memory/448-52-0x00000000715D0000-0x000000007161C000-memory.dmp
memory/448-85-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/448-81-0x0000000007F00000-0x0000000007F1A000-memory.dmp
memory/448-82-0x0000000007EE0000-0x0000000007EE8000-memory.dmp
memory/448-80-0x0000000007E00000-0x0000000007E14000-memory.dmp
memory/448-79-0x0000000007DF0000-0x0000000007DFE000-memory.dmp
memory/448-63-0x0000000007880000-0x0000000007923000-memory.dmp
memory/448-62-0x0000000007850000-0x000000000786E000-memory.dmp
memory/448-76-0x0000000007C30000-0x0000000007C3A000-memory.dmp
memory/448-22-0x00000000061B0000-0x0000000006216000-memory.dmp
memory/448-20-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/448-21-0x0000000006010000-0x0000000006032000-memory.dmp
memory/448-74-0x0000000008210000-0x000000000888A000-memory.dmp
memory/448-23-0x0000000006220000-0x0000000006286000-memory.dmp
memory/448-47-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/448-24-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/448-42-0x0000000006290000-0x00000000065E4000-memory.dmp
memory/4104-45-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4104-87-0x0000000006B90000-0x0000000006BE0000-memory.dmp
memory/4584-50-0x0000000006790000-0x00000000067DC000-memory.dmp
memory/4584-44-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/4584-49-0x00000000061C0000-0x00000000061DE000-memory.dmp
memory/4584-77-0x0000000007760000-0x00000000077F6000-memory.dmp
memory/4584-17-0x0000000005290000-0x00000000058B8000-memory.dmp
memory/4584-18-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/4584-16-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/4584-15-0x0000000004C20000-0x0000000004C56000-memory.dmp
memory/4584-64-0x00000000715D0000-0x000000007161C000-memory.dmp
memory/4584-86-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/4868-3-0x0000000004E60000-0x0000000004EF2000-memory.dmp
memory/4868-0-0x0000000074E6E000-0x0000000074E6F000-memory.dmp
memory/4868-1-0x00000000003A0000-0x000000000046A000-memory.dmp
memory/4868-48-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/4868-2-0x0000000005410000-0x00000000059B4000-memory.dmp
memory/4868-10-0x00000000062B0000-0x000000000634C000-memory.dmp
memory/4868-9-0x0000000006030000-0x00000000060B2000-memory.dmp
memory/4868-7-0x0000000005FD0000-0x0000000005FDE000-memory.dmp
memory/4868-8-0x0000000005FE0000-0x0000000005FF0000-memory.dmp
memory/4868-6-0x0000000006770000-0x0000000006786000-memory.dmp
memory/4868-5-0x0000000074E60000-0x0000000075610000-memory.dmp
memory/4868-4-0x0000000004F00000-0x0000000004F0A000-memory.dmp