Analysis
- max time kernel
136s - max time network
151s - platform
windows10_x64 - resource
win10v20201028 - submitted
16/03/2021, 10:25
General
- Target SMEC SX#ATUSG02.COM.exe
- Size 1.7MB
- Sample210316-dtkftbtw46
- SHA256 d8a41a28c498d512310f9acfe5c44c6d22daa445d522cd53bd80bb4b2fddf2ac
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.vincnetsystems.de
-
Port
587
-
Username
-
Password
^PFybvG0
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Executes dropped EXE 1 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 SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\SMEC SX#ATUSG02.COM.exe"C:\Users\Admin\AppData\Local\Temp\SMEC SX#ATUSG02.COM.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/940-16-0x0000000000400000-0x000000000043C000-memory.dmp
memory/940-30-0x0000000002741000-0x0000000002742000-memory.dmp
memory/940-29-0x0000000000BC0000-0x0000000000BC1000-memory.dmp
memory/940-27-0x00000000059A0000-0x00000000059A1000-memory.dmp
memory/940-26-0x0000000005900000-0x0000000005901000-memory.dmp
memory/940-24-0x0000000002740000-0x0000000002741000-memory.dmp
memory/940-20-0x0000000073900000-0x0000000073FEE000-memory.dmp
memory/3584-8-0x0000000005990000-0x0000000005991000-memory.dmp
memory/3584-15-0x0000000002DA0000-0x0000000002DA1000-memory.dmp
memory/3584-14-0x0000000006CC0000-0x0000000006CCB000-memory.dmp
memory/3584-13-0x0000000005A31000-0x0000000005A32000-memory.dmp
memory/3584-12-0x0000000006C80000-0x0000000006CAF000-memory.dmp
memory/3584-10-0x0000000006950000-0x0000000006951000-memory.dmp
memory/3584-9-0x0000000005A30000-0x0000000005A31000-memory.dmp
memory/3584-2-0x0000000073900000-0x0000000073FEE000-memory.dmp
memory/3584-7-0x00000000054B0000-0x00000000054B1000-memory.dmp
memory/3584-6-0x00000000055A0000-0x00000000055A1000-memory.dmp
memory/3584-5-0x0000000005AA0000-0x0000000005AA1000-memory.dmp
memory/3584-3-0x0000000000A60000-0x0000000000A61000-memory.dmp