Analysis
- max time kernel
133s - max time network
112s - platform
windows10_x64 - resource
win10v200722 - submitted
16/09/2020, 14:25
General
- Target MR#1901421 - RT materials.exe
- Size 386KB
- Sample200916-4edrjerl6s
- SHA256 277848fe676c925becc15a494855ccbc42ee8e2e88cf61144d7de703c82250a0
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.usamilitarydept.com
-
Port
587
-
Username
-
Password
w($dIvA0
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.
- 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 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\MR#1901421 - RT materials.exe"C:\Users\Admin\AppData\Local\Temp\MR#1901421 - RT materials.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\iejZDvQv" /XML "C:\Users\Admin\AppData\Local\Temp\tmp39AE.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\MR#1901421 - RT materials.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1616-21-0x0000000005CB0000-0x0000000005CB1000-memory.dmp
memory/1616-20-0x0000000005C10000-0x0000000005C11000-memory.dmp
memory/1616-15-0x0000000073FA0000-0x000000007468E000-memory.dmp
memory/1616-12-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3712-5-0x0000000004B40000-0x0000000004B41000-memory.dmp
memory/3712-9-0x00000000096A0000-0x00000000096EE000-memory.dmp
memory/3712-8-0x0000000007060000-0x00000000070B7000-memory.dmp
memory/3712-7-0x0000000004C50000-0x0000000004C53000-memory.dmp
memory/3712-6-0x0000000006D50000-0x0000000006D51000-memory.dmp
memory/3712-0-0x0000000073FA0000-0x000000007468E000-memory.dmp
memory/3712-4-0x00000000049D0000-0x00000000049D1000-memory.dmp
memory/3712-3-0x0000000004DF0000-0x0000000004DF1000-memory.dmp
memory/3712-1-0x0000000000130000-0x0000000000131000-memory.dmp