Analysis
- max time kernel
133s - max time network
123s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
07/06/2024, 01:26
General
- Target 31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe
- Size 351KB
- Sample240607-btr5wafb7y
- SHA256 31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b
Malware Config
Extracted
-
Protocol
ftp
-
Host
s3.serv00.com
-
Port
21
-
Username
f9226_jono
-
Password
Ogasa56#@
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://s3.serv00.com
-
Port
21
-
Username
f9226_jono
-
Password
Ogasa56#@
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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.
- Adds Run key to start application 2 TTPs 1 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 2 IoCs
- Program crash 1 IoCs
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe"C:\Users\Admin\AppData\Local\Temp\31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe"C:\Users\Admin\AppData\Local\Temp\31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe"2⤵
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4032 -s 803⤵
- Program crash
-
-
-
C:\Users\Admin\AppData\Local\Temp\31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe"C:\Users\Admin\AppData\Local\Temp\31f4904d3dbe94e06f632e825d26a84b205905a36dc25efffb0425634d4fd92b.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4032 -ip 40321⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1556-0-0x00000000751FE000-0x00000000751FF000-memory.dmp
memory/1556-1-0x0000000000540000-0x000000000059E000-memory.dmp
memory/1556-3-0x00000000751F0000-0x00000000759A0000-memory.dmp
memory/4988-4-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4988-5-0x00000000751F0000-0x00000000759A0000-memory.dmp
memory/4988-6-0x0000000005C40000-0x00000000061E4000-memory.dmp
memory/4988-8-0x0000000005600000-0x0000000005666000-memory.dmp
memory/4988-7-0x00000000751F0000-0x00000000759A0000-memory.dmp
memory/4988-11-0x0000000006C60000-0x0000000006CB0000-memory.dmp
memory/4988-12-0x0000000006D50000-0x0000000006DEC000-memory.dmp
memory/4988-13-0x0000000006E90000-0x0000000006F22000-memory.dmp
memory/4988-14-0x0000000006E30000-0x0000000006E3A000-memory.dmp
memory/4988-15-0x00000000751F0000-0x00000000759A0000-memory.dmp