Analysis
- max time kernel
93s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
- submitted
20/01/2023, 13:57
General
- Target file.exe
- Size 200KB
- Sample230120-q9ayvsba74
- SHA256 d0dcb0eee1b8b7f5b54cf5b26a04ec74e588918bb47e7ea738cd2548410c9b85
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
madrid.servershost.net
-
Port
587
-
Username
-
Password
Goodplace1@1
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Modifies system executable filetype association 2 TTPs 1 IoCs
- Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
- Executes dropped EXE 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- 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
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Modifies registry class 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe"C:\Users\Admin\AppData\Local\Temp\3582-490\file.exe"2⤵
- Executes dropped EXE
- 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
file.exe
file.exe
memory/1604-135-0x0000000000270000-0x000000000029E000-memory.dmp
memory/1604-136-0x0000000005290000-0x0000000005834000-memory.dmp
memory/1604-137-0x0000000004CE0000-0x0000000004D7C000-memory.dmp
memory/1604-138-0x0000000005220000-0x0000000005286000-memory.dmp
memory/1604-139-0x0000000005DA0000-0x0000000005E32000-memory.dmp
memory/1604-140-0x00000000063F0000-0x00000000063FA000-memory.dmp
memory/1604-141-0x0000000006470000-0x00000000064C0000-memory.dmp