Analysis
- max time kernel
91s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20220901-en - resource tags
- submitted
24/10/2022, 05:56
General
- Target 990OTT220624040.exe
- Size 1019KB
- Sample221024-gm2cvsefh5
- SHA256 fe4d35aa4b996c11b247ce2eeda07ce6a932172e73b9db9fc00bb2e2f9ac2aa1
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot1507062795:AAEBb0H5OYbp-dWwXk8ffQp0InjOhKxhpbU/
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- 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
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\990OTT220624040.exe"C:\Users\Admin\AppData\Local\Temp\990OTT220624040.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\skxIBkJUsixs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1FBD.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\990OTT220624040.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
990OTT220624040.exe.log
tmp1FBD.tmp
memory/2296-132-0x0000000000A20000-0x0000000000B24000-memory.dmp
memory/2296-133-0x00000000059C0000-0x0000000005F64000-memory.dmp
memory/2296-134-0x00000000054F0000-0x0000000005582000-memory.dmp
memory/2296-135-0x0000000005590000-0x000000000562C000-memory.dmp
memory/2296-136-0x0000000006060000-0x000000000606A000-memory.dmp
memory/5108-140-0x0000000000400000-0x000000000043C000-memory.dmp
memory/5108-142-0x0000000006190000-0x00000000061F6000-memory.dmp
memory/5108-143-0x0000000006640000-0x0000000006690000-memory.dmp