Analysis
- max time kernel
93s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
14/11/2024, 14:29
General
- Target 2024-11-14_fa4846c0444989818272902a0e5d2044_formbook_hiddentear.exe
- Size 680KB
- Sample241114-rt2bjs1apb
- SHA256 0cdd69862bf252d0ddbcbdf11612604b8cc055c7b09d5b948d84589569c492eb
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.kesoremrayon.com
-
Port
21
-
Username
-
Password
hHjRIMC^uNWw
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Command and Scripting Interpreter: PowerShell 1 TTPs 3 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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 SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-11-14_fa4846c0444989818272902a0e5d2044_formbook_hiddentear.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-14_fa4846c0444989818272902a0e5d2044_formbook_hiddentear.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\2024-11-14_fa4846c0444989818272902a0e5d2044_formbook_hiddentear.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\UqZUROQpIxP.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\UqZUROQpIxP" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF992.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Local\Temp\2024-11-14_fa4846c0444989818272902a0e5d2044_formbook_hiddentear.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-14_fa4846c0444989818272902a0e5d2044_formbook_hiddentear.exe"2⤵
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
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_5ozysbok.p2q.ps1
tmpF992.tmp
memory/540-82-0x0000000007930000-0x0000000007938000-memory.dmp
memory/540-80-0x0000000007850000-0x0000000007864000-memory.dmp
memory/540-81-0x0000000007950000-0x000000000796A000-memory.dmp
memory/540-73-0x00000000072E0000-0x0000000007383000-memory.dmp
memory/540-78-0x0000000007810000-0x0000000007821000-memory.dmp
memory/540-77-0x0000000007890000-0x0000000007926000-memory.dmp
memory/540-32-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/540-90-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/540-24-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/540-17-0x0000000005430000-0x0000000005A58000-memory.dmp
memory/540-22-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/540-58-0x0000000074FF0000-0x000000007503C000-memory.dmp
memory/540-75-0x0000000007610000-0x000000000762A000-memory.dmp
memory/1636-46-0x0000000000400000-0x0000000000430000-memory.dmp
memory/1636-91-0x0000000005F60000-0x0000000006122000-memory.dmp
memory/1636-86-0x0000000005D40000-0x0000000005D90000-memory.dmp
memory/3932-0-0x000000007474E000-0x000000007474F000-memory.dmp
memory/3932-10-0x000000000AA90000-0x000000000AB2C000-memory.dmp
memory/3932-9-0x0000000006E50000-0x0000000006EC4000-memory.dmp
memory/3932-8-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/3932-7-0x000000007474E000-0x000000007474F000-memory.dmp
memory/3932-6-0x0000000005DA0000-0x0000000005DB2000-memory.dmp
memory/3932-48-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/3932-5-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/3932-4-0x0000000005A10000-0x0000000005A1A000-memory.dmp
memory/3932-3-0x0000000005940000-0x00000000059D2000-memory.dmp
memory/3932-2-0x0000000005E40000-0x00000000063E4000-memory.dmp
memory/3932-1-0x0000000000EF0000-0x0000000000FA0000-memory.dmp
memory/4712-16-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/4712-52-0x0000000074FF0000-0x000000007503C000-memory.dmp
memory/4712-74-0x00000000079F0000-0x000000000806A000-memory.dmp
memory/4712-68-0x0000000006640000-0x000000000665E000-memory.dmp
memory/4712-76-0x0000000007420000-0x000000000742A000-memory.dmp
memory/4712-51-0x0000000006680000-0x00000000066B2000-memory.dmp
memory/4712-50-0x00000000065E0000-0x000000000662C000-memory.dmp
memory/4712-79-0x00000000075D0000-0x00000000075DE000-memory.dmp
memory/4712-49-0x0000000005F70000-0x0000000005F8E000-memory.dmp
memory/4712-25-0x0000000005970000-0x0000000005CC4000-memory.dmp
memory/4712-26-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/4712-85-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/4712-19-0x0000000004FC0000-0x0000000004FE2000-memory.dmp
memory/4712-20-0x0000000005060000-0x00000000050C6000-memory.dmp
memory/4712-21-0x00000000050D0000-0x0000000005136000-memory.dmp
memory/4712-18-0x0000000074740000-0x0000000074EF0000-memory.dmp
memory/4712-15-0x0000000002780000-0x00000000027B6000-memory.dmp