Analysis
- max time kernel
98s - max time network
112s - platform
windows10_x64 - resource
win10v20210408 - submitted
02/08/2021, 12:56
General
- Target Invoice.exe
- Size 840KB
- Sample210802-v35mtf182a
- SHA256 55b0da6efe5800b10b6f47d98c4943652dca7eec1a418dcb5ad828bc667f3e6d
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
us2.smtp.mailhostbox.com
-
Port
587
-
Username
-
Password
gibson.1990
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
- Drops file in Drivers directory 1 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.
- Adds Run key to start application 2 TTPs 1 IoCs
- 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\Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Invoice.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3628-123-0x0000000004C60000-0x0000000004C6F000-memory.dmp
memory/3628-116-0x0000000005030000-0x0000000005031000-memory.dmp
memory/3628-118-0x0000000004BD0000-0x0000000004BD1000-memory.dmp
memory/3628-119-0x0000000004CF0000-0x0000000004CF1000-memory.dmp
memory/3628-120-0x0000000004B30000-0x000000000502E000-memory.dmp
memory/3628-121-0x0000000004AC0000-0x0000000004AC1000-memory.dmp
memory/3628-117-0x0000000004B30000-0x0000000004B31000-memory.dmp
memory/3628-114-0x00000000001E0000-0x00000000001E1000-memory.dmp
memory/3628-122-0x0000000004C80000-0x0000000004CE8000-memory.dmp
memory/3792-124-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3792-131-0x0000000005450000-0x000000000594E000-memory.dmp
memory/3792-132-0x00000000058B0000-0x00000000058B1000-memory.dmp
memory/3792-133-0x0000000006140000-0x0000000006141000-memory.dmp
memory/3792-135-0x00000000013C0000-0x00000000013C1000-memory.dmp