Analysis
- max time kernel
43s - max time network
111s - platform
windows10_x64 - resource
win10v200722 - submitted
30/09/2020, 11:35
General
- Target Port Inquiry 34009294342.xls.exe
- Size 210KB
- Sample200930-mbdmn8798a
- SHA256 80a52385f8f47d5ff195f29a6dc0288985d392ea4b76acc6c18320fd6ecfbf5a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.stevenlkornsteinlawfirm.com
-
Port
587
-
Username
-
Password
T:gr:A2t{7ai
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.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 13 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Program crash 1 IoCs
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Port Inquiry 34009294342.xls.exe"C:\Users\Admin\AppData\Local\Temp\Port Inquiry 34009294342.xls.exe"1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\timeout.exetimeout 42⤵
- Delays execution with timeout.exe
-
-
C:\Users\Admin\AppData\Local\Temp\Port Inquiry 34009294342.xls.exe"C:\Users\Admin\AppData\Local\Temp\Port Inquiry 34009294342.xls.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 860 -s 16962⤵
- Program crash
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/860-1-0x0000000000B50000-0x0000000000B51000-memory.dmp
memory/860-3-0x00000000054B0000-0x00000000054B1000-memory.dmp
memory/860-0-0x0000000073270000-0x000000007395E000-memory.dmp
memory/860-5-0x0000000005F00000-0x0000000005F3F000-memory.dmp
memory/860-6-0x0000000006440000-0x0000000006441000-memory.dmp
memory/3392-14-0x00000000047B0000-0x00000000047B1000-memory.dmp
memory/3980-9-0x0000000073270000-0x000000007395E000-memory.dmp
memory/3980-7-0x0000000000400000-0x0000000000436000-memory.dmp
memory/3980-15-0x0000000005470000-0x0000000005471000-memory.dmp
memory/3980-16-0x0000000006030000-0x0000000006031000-memory.dmp
memory/3980-17-0x0000000006750000-0x0000000006751000-memory.dmp
memory/3980-18-0x0000000006700000-0x0000000006701000-memory.dmp