Analysis
- max time kernel
134s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
09/06/2024, 01:29
General
- Target 73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0.exe
- Size 731KB
- Sample240609-bwlqwacb85
- SHA256 73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0
Malware Config
Extracted
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
xhcgmrubwdhylrry
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.gmail.com
-
Port
587
-
Username
-
Password
xhcgmrubwdhylrry
-
Email to
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Detect packed .NET executables. Mostly AgentTeslaV4. 1 IoCs
- Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 1 IoCs
- Detects executables referencing Windows vault credential objects. Observed in infostealers 1 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 1 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 1 IoCs
- Detects executables referencing many file transfer clients. Observed in information stealers 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.
- Adds Run key to start application 2 TTPs 1 IoCs
- 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
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0.exe"C:\Users\Admin\AppData\Local\Temp\73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0.exe"C:\Users\Admin\AppData\Local\Temp\73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0.exe"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
73c5c4b12646631dbf1e8adf10b52b8635b34d02d753d3fe829bd41210f547f0.exe.log
memory/3276-11-0x0000000000400000-0x0000000000442000-memory.dmp
memory/3276-20-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/3276-19-0x0000000006880000-0x00000000068D0000-memory.dmp
memory/3276-14-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/3276-16-0x00000000051E0000-0x0000000005246000-memory.dmp
memory/3276-17-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/3444-4-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/3444-7-0x0000000006260000-0x000000000626E000-memory.dmp
memory/3444-9-0x00000000062D0000-0x0000000006352000-memory.dmp
memory/3444-8-0x0000000006270000-0x0000000006280000-memory.dmp
memory/3444-15-0x0000000075310000-0x0000000075AC0000-memory.dmp
memory/3444-6-0x0000000007D00000-0x0000000007D16000-memory.dmp
memory/3444-5-0x0000000005010000-0x000000000501A000-memory.dmp
memory/3444-0-0x000000007531E000-0x000000007531F000-memory.dmp
memory/3444-3-0x0000000005040000-0x00000000050D2000-memory.dmp
memory/3444-10-0x0000000008EB0000-0x0000000008F4C000-memory.dmp
memory/3444-2-0x00000000056A0000-0x0000000005C44000-memory.dmp
memory/3444-1-0x00000000006A0000-0x000000000075E000-memory.dmp