Analysis
- max time kernel
129s - max time network
126s - platform
windows7_x64 - resource
win7-en-20210920 - submitted
21/10/2021, 09:26
General
- Target PAYMENT FOR OVERDUE INVOICE1.exe
- Size 480KB
- Sample211021-ld7kqsaag9
- SHA256 ca08070182c0182cabcae7e0fb3aea143e41d43e4bde4bd21dc04838d4bd417e
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.privateemail.com
-
Port
587
-
Username
-
Password
mmm777
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 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PAYMENT FOR OVERDUE INVOICE1.exe"C:\Users\Admin\AppData\Local\Temp\PAYMENT FOR OVERDUE INVOICE1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\xsFqGJAH" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5428.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\PAYMENT FOR OVERDUE INVOICE1.exe"C:\Users\Admin\AppData\Local\Temp\PAYMENT FOR OVERDUE INVOICE1.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1156-64-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1156-70-0x0000000004B11000-0x0000000004B12000-memory.dmp
memory/1156-69-0x0000000004B10000-0x0000000004B11000-memory.dmp
memory/1156-67-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1156-61-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1156-62-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1156-63-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1156-65-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1756-54-0x0000000000150000-0x0000000000151000-memory.dmp
memory/1756-57-0x0000000000270000-0x0000000000277000-memory.dmp
memory/1756-56-0x0000000076961000-0x0000000076963000-memory.dmp
memory/1756-59-0x00000000051A0000-0x00000000051F8000-memory.dmp
memory/1756-58-0x0000000004CE0000-0x0000000004CE1000-memory.dmp