Analysis
- max time kernel
142s - max time network
140s - platform
windows10_x64 - resource
win10v20201028 - submitted
13/11/2020, 10:08
General
- Target FINAL SHIPPING DOCS.exe
- Size 584KB
- Sample201113-fgrbykdls2
- SHA256 f90cf6686fcfe69bb074cf65a5b7e19c8e97b1351377faa7a2477577d4171de8
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
t$KMOPJ9
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Uses the VBS compiler for execution 1 TTPs
- 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 3 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\FINAL SHIPPING DOCS.exe"C:\Users\Admin\AppData\Local\Temp\FINAL SHIPPING DOCS.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\CZYsqNY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp725.tmp"2⤵
- Creates scheduled task(s)
-
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/576-9-0x0000000008670000-0x0000000008671000-memory.dmp
memory/576-0-0x0000000073190000-0x000000007387E000-memory.dmp
memory/576-4-0x0000000004C20000-0x0000000004C21000-memory.dmp
memory/576-5-0x0000000004B80000-0x0000000004B81000-memory.dmp
memory/576-6-0x0000000008750000-0x0000000008751000-memory.dmp
memory/576-7-0x0000000008370000-0x0000000008384000-memory.dmp
memory/576-3-0x0000000005080000-0x0000000005081000-memory.dmp
memory/576-1-0x00000000002B0000-0x00000000002B1000-memory.dmp
memory/576-8-0x0000000006870000-0x00000000068EA000-memory.dmp
memory/1160-12-0x0000000000400000-0x000000000043C000-memory.dmp
memory/1160-14-0x0000000073190000-0x000000007387E000-memory.dmp
memory/1160-19-0x0000000009860000-0x0000000009861000-memory.dmp
memory/1160-20-0x000000000A310000-0x000000000A311000-memory.dmp