Analysis
- max time kernel
149s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
30/05/2024, 15:29
General
- Target REVISED_CONTRACTS_20240530_JPG.exe
- Size 583KB
- Sample240530-sxbezaeb82
- SHA256 1b6304388826ef0f3c826c75afbe4ff571562dae466726e8d25cc93afb22ffa0
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.instantprint.ro
-
Port
21
-
Username
-
Password
playmen123#@
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 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 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Looks up external IP address via web service 1 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
- Drops file in Program Files directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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\REVISED_CONTRACTS_20240530_JPG.exe"C:\Users\Admin\AppData\Local\Temp\REVISED_CONTRACTS_20240530_JPG.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\REVISED_CONTRACTS_20240530_JPG.exe"C:\Users\Admin\AppData\Local\Temp\REVISED_CONTRACTS_20240530_JPG.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
System.dll
memory/3512-21-0x0000000036E80000-0x0000000036EE6000-memory.dmp
memory/3512-13-0x0000000001710000-0x000000000434A000-memory.dmp
memory/3512-17-0x00000000004B0000-0x0000000001704000-memory.dmp
memory/3512-18-0x00000000004B0000-0x00000000004F2000-memory.dmp
memory/3512-19-0x0000000036F60000-0x0000000037504000-memory.dmp
memory/3512-22-0x0000000037D70000-0x0000000037DC0000-memory.dmp
memory/3512-23-0x0000000037DD0000-0x0000000037E62000-memory.dmp
memory/3512-24-0x0000000037E90000-0x0000000037E9A000-memory.dmp
memory/3512-27-0x0000000001710000-0x000000000434A000-memory.dmp
memory/3956-11-0x0000000077261000-0x0000000077381000-memory.dmp
memory/3956-12-0x0000000010004000-0x0000000010005000-memory.dmp
memory/3956-20-0x0000000004B90000-0x00000000077CA000-memory.dmp
memory/3956-10-0x0000000004B90000-0x00000000077CA000-memory.dmp