Analysis
- max time kernel
150s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
16/12/2024, 12:34
General
- Target PO.bat.exe
- Size 760KB
- Sample241216-prrcfs1pan
- SHA256 81c7f5b291b1fcd6d64f7f12208b0134a8462f156dbda97188ec0ba5ff869478
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.concaribe.com
-
Port
21
-
Username
-
Password
ro}UWgz#!38E
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 10 IoCs
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- 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 3 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 NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PO.bat.exe"C:\Users\Admin\AppData\Local\Temp\PO.bat.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\PO.bat.exe"C:\Users\Admin\AppData\Local\Temp\PO.bat.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
LangDLL.dll
System.dll
memory/2476-35-0x0000000004240000-0x000000000544A000-memory.dmp
memory/2476-36-0x0000000076FF1000-0x0000000077111000-memory.dmp
memory/2476-38-0x0000000010004000-0x0000000010005000-memory.dmp
memory/2476-37-0x0000000004240000-0x000000000544A000-memory.dmp
memory/2476-39-0x0000000004240000-0x000000000544A000-memory.dmp
memory/5108-41-0x0000000077078000-0x0000000077079000-memory.dmp
memory/5108-40-0x0000000001710000-0x000000000291A000-memory.dmp
memory/5108-42-0x0000000077095000-0x0000000077096000-memory.dmp
memory/5108-43-0x00000000004B0000-0x0000000001704000-memory.dmp
memory/5108-44-0x0000000001710000-0x000000000291A000-memory.dmp
memory/5108-45-0x0000000076FF1000-0x0000000077111000-memory.dmp
memory/5108-46-0x00000000004B0000-0x00000000004F2000-memory.dmp
memory/5108-47-0x00000000351F0000-0x0000000035794000-memory.dmp
memory/5108-48-0x0000000035130000-0x0000000035196000-memory.dmp
memory/5108-50-0x0000000036170000-0x00000000361C0000-memory.dmp
memory/5108-51-0x00000000361C0000-0x0000000036252000-memory.dmp
memory/5108-52-0x0000000036290000-0x000000003629A000-memory.dmp