Analysis
- max time kernel
150s - max time network
148s - platform
windows10_x64 - resource
win10v20201028 - submitted
08/12/2020, 18:39
General
- Target 52c1c0a68da545fd829d2b5ed7c2b4f4.exe
- Size 1021KB
- Sample201208-hmp3rn7xq2
- SHA256 2268b02851b88a3dc6aea375ec1a36b9ceca5def60ca62e2f47d22db566e1e7a
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
UMTLG^L5
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.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- 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 WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\52c1c0a68da545fd829d2b5ed7c2b4f4.exe"C:\Users\Admin\AppData\Local\Temp\52c1c0a68da545fd829d2b5ed7c2b4f4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tivwHfLpckVPVs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp255B.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Users\Admin\AppData\Local\Temp\52c1c0a68da545fd829d2b5ed7c2b4f4.exe"C:\Users\Admin\AppData\Local\Temp\52c1c0a68da545fd829d2b5ed7c2b4f4.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/756-7-0x0000000005780000-0x0000000005781000-memory.dmp
memory/756-14-0x0000000047190000-0x0000000047210000-memory.dmp
memory/756-8-0x0000000005870000-0x0000000005871000-memory.dmp
memory/756-9-0x0000000005940000-0x0000000005941000-memory.dmp
memory/756-10-0x0000000026B60000-0x0000000046B48000-memory.dmp
memory/756-11-0x0000000046FC0000-0x000000004705E000-memory.dmp
memory/756-12-0x00000000058C0000-0x00000000058C8000-memory.dmp
memory/756-2-0x00000000739A0000-0x000000007408E000-memory.dmp
memory/756-6-0x0000000005C80000-0x0000000005C81000-memory.dmp
memory/756-5-0x00000000056E0000-0x00000000056E1000-memory.dmp
memory/756-3-0x0000000000D40000-0x0000000000D41000-memory.dmp
memory/2116-17-0x0000000000400000-0x000000000043C000-memory.dmp
memory/2116-20-0x00000000739A0000-0x000000007408E000-memory.dmp
memory/2116-25-0x0000000005400000-0x0000000005401000-memory.dmp
memory/2116-26-0x0000000005C90000-0x0000000005C91000-memory.dmp