Analysis
- max time kernel
114s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
01/06/2023, 19:35
General
- Target aaiygiJAsBkaLRK.exe
- Size 1.1MB
- Sample230601-yan1fage31
- SHA256 e0b0867a1134a009f72806ea563e4e6597152fd73206bdbabea5a7e716cf99b4
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5473903116:AAH0COryXTO6kCeNjQRiy6Z66WJsa9yts6c/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- 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
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\aaiygiJAsBkaLRK.exe"C:\Users\Admin\AppData\Local\Temp\aaiygiJAsBkaLRK.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\aaiygiJAsBkaLRK.exe"C:\Users\Admin\AppData\Local\Temp\aaiygiJAsBkaLRK.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4064 -s 21803⤵
- Program crash
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4064 -ip 40641⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
aaiygiJAsBkaLRK.exe.log
memory/2132-133-0x0000000000CE0000-0x0000000000DF6000-memory.dmp
memory/2132-134-0x0000000005D80000-0x0000000006324000-memory.dmp
memory/2132-135-0x00000000057D0000-0x0000000005862000-memory.dmp
memory/2132-136-0x0000000005910000-0x0000000005920000-memory.dmp
memory/2132-137-0x00000000057B0000-0x00000000057BA000-memory.dmp
memory/2132-138-0x0000000005910000-0x0000000005920000-memory.dmp
memory/2132-139-0x0000000008D10000-0x0000000008DAC000-memory.dmp
memory/4064-140-0x0000000000400000-0x000000000043C000-memory.dmp
memory/4064-143-0x0000000005900000-0x0000000005910000-memory.dmp
memory/4064-144-0x0000000005C90000-0x0000000005CF6000-memory.dmp
memory/4064-145-0x0000000006EB0000-0x0000000006F00000-memory.dmp