Analysis
- max time kernel
137s - max time network
127s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
25/10/2021, 04:27
General
- Target Purchase order. pdf..................exe
- Size 607KB
- Sample211025-e24enafee7
- SHA256 877fbae1ee57fedd9ad5406e6ac3750f737dadc3ac6e2677f730b8e330fa6c95
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.oxc-ph.com
-
Port
587
-
Username
-
Password
oxychempassword
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 5 IoCs
- 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
- 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Purchase order. pdf..................exe"C:\Users\Admin\AppData\Local\Temp\Purchase order. pdf..................exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GrEoAlwf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8FB7.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\Purchase order. pdf..................exe"{path}"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
Loading Replay Monitor...
Downloads
memory/784-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/784-74-0x0000000004BA1000-0x0000000004BA2000-memory.dmp
memory/784-73-0x0000000004BA0000-0x0000000004BA1000-memory.dmp
memory/784-71-0x0000000000400000-0x000000000043C000-memory.dmp
memory/784-69-0x0000000000400000-0x000000000043C000-memory.dmp
memory/784-68-0x0000000000400000-0x000000000043C000-memory.dmp
memory/784-67-0x0000000000400000-0x000000000043C000-memory.dmp
memory/784-66-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1728-54-0x0000000000D10000-0x0000000000D11000-memory.dmp
memory/1728-62-0x00000000041F0000-0x0000000004228000-memory.dmp
memory/1728-61-0x0000000008460000-0x00000000084DF000-memory.dmp
memory/1728-60-0x0000000000A60000-0x0000000000A6E000-memory.dmp
memory/1728-59-0x0000000004E32000-0x0000000004E33000-memory.dmp
memory/1728-58-0x0000000004E31000-0x0000000004E32000-memory.dmp
memory/1728-57-0x0000000004E30000-0x0000000004E31000-memory.dmp
memory/1728-56-0x0000000075821000-0x0000000075823000-memory.dmp