Analysis
- max time kernel
140s - max time network
133s - platform
windows10_x64 - resource
win10-en-20211014 - 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 2 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.
- Modifies system certificate store 2 TTPs 2 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 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\Purchase order. pdf..................exe"C:\Users\Admin\AppData\Local\Temp\Purchase order. pdf..................exe"1⤵
- Suspicious use of SetThreadContext
- Modifies system certificate store
- 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\tmp6945.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/1448-142-0x0000000005761000-0x0000000005762000-memory.dmp
memory/1448-139-0x0000000006400000-0x0000000006401000-memory.dmp
memory/1448-138-0x0000000005C40000-0x0000000005C41000-memory.dmp
memory/1448-137-0x0000000005760000-0x0000000005761000-memory.dmp
memory/1448-130-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3356-121-0x0000000004C60000-0x0000000004C61000-memory.dmp
memory/3356-126-0x0000000009860000-0x00000000098DF000-memory.dmp
memory/3356-127-0x000000000C110000-0x000000000C148000-memory.dmp
memory/3356-125-0x0000000008F30000-0x0000000008F3E000-memory.dmp
memory/3356-124-0x0000000004BA0000-0x0000000004C3C000-memory.dmp
memory/3356-123-0x0000000004BA0000-0x0000000004C3C000-memory.dmp
memory/3356-122-0x0000000004F40000-0x0000000004F41000-memory.dmp
memory/3356-115-0x00000000003B0000-0x00000000003B1000-memory.dmp
memory/3356-120-0x0000000004BA0000-0x0000000004C3C000-memory.dmp
memory/3356-119-0x0000000004D50000-0x0000000004D51000-memory.dmp
memory/3356-118-0x0000000005250000-0x0000000005251000-memory.dmp
memory/3356-117-0x0000000004CB0000-0x0000000004CB1000-memory.dmp