Analysis
- max time kernel
142s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
20/07/2023, 11:59
General
- Target gvailantzx.exe
- Size 616KB
- Sample230720-n5qgmsgd57
- SHA256 0d03f0e57bfc9a9b4e583404b127ae9adff260762252e77d11c95bc6181188ce
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
brill.myhostcpl.com
-
Port
587
-
Username
-
Password
YRv0W)FH%o9S
-
Email to
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
- Suspicious behavior: EnumeratesProcesses 2 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\gvailantzx.exe"C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"C:\Users\Admin\AppData\Local\Temp\gvailantzx.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/472-142-0x0000000000400000-0x0000000000430000-memory.dmp
memory/472-160-0x00000000050F0000-0x0000000005100000-memory.dmp
memory/472-159-0x00000000743E0000-0x0000000074B90000-memory.dmp
memory/472-149-0x0000000006B30000-0x0000000006CF2000-memory.dmp
memory/472-148-0x0000000006910000-0x0000000006960000-memory.dmp
memory/472-146-0x0000000005170000-0x00000000051D6000-memory.dmp
memory/472-145-0x00000000050F0000-0x0000000005100000-memory.dmp
memory/472-144-0x00000000743E0000-0x0000000074B90000-memory.dmp
memory/4796-137-0x00000000052B0000-0x00000000052C0000-memory.dmp
memory/4796-141-0x00000000052B0000-0x00000000052C0000-memory.dmp
memory/4796-140-0x00000000743E0000-0x0000000074B90000-memory.dmp
memory/4796-139-0x0000000005360000-0x00000000053FC000-memory.dmp
memory/4796-138-0x00000000050A0000-0x00000000050AA000-memory.dmp
memory/4796-147-0x00000000743E0000-0x0000000074B90000-memory.dmp
memory/4796-133-0x00000000743E0000-0x0000000074B90000-memory.dmp
memory/4796-136-0x0000000005110000-0x00000000051A2000-memory.dmp
memory/4796-135-0x00000000056C0000-0x0000000005C64000-memory.dmp
memory/4796-134-0x0000000000610000-0x00000000006B0000-memory.dmp