Analysis
- max time kernel
108s - max time network
59s - platform
windows7_x64 - resource
win7v200722 - submitted
08/08/2020, 08:13
General
- Target recibo_de_seguimiento_de_dhl.exe
- Size 785KB
- Sample200808-eb15aylnba
- SHA256 cf8fab966145ea0701db997fd11c2969c984d6793d668f84e113f358274150a6
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.mcspa.co.il/
-
Port
21
-
Username
-
Password
law_rence0
-
Protocol
ftp
-
Host
ftp://ftp.mcspa.co.il/
-
Port
21
-
Username
-
Password
law_rence0
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 4 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 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.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 5 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\recibo_de_seguimiento_de_dhl.exe"C:\Users\Admin\AppData\Local\Temp\recibo_de_seguimiento_de_dhl.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
C:\Windows\SysWOW64\DllHost.exeC:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}1⤵
- Suspicious use of FindShellTrayWindow
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1244-0-0x0000000074860000-0x0000000074F4E000-memory.dmp
memory/1244-6-0x0000000004A10000-0x0000000004A13000-memory.dmp
memory/1244-3-0x0000000000920000-0x000000000092F000-memory.dmp
memory/1244-1-0x0000000000D30000-0x0000000000D31000-memory.dmp
memory/1856-5-0x000007FEF7FA0000-0x000007FEF821A000-memory.dmp
memory/1944-8-0x0000000000400000-0x000000000044C000-memory.dmp
memory/1944-11-0x0000000000400000-0x000000000044C000-memory.dmp
memory/1944-12-0x0000000000400000-0x000000000044C000-memory.dmp
memory/1944-15-0x00000000747E0000-0x0000000074ECE000-memory.dmp