Analysis
- max time kernel
134s - max time network
136s - platform
windows10_x64 - resource
win10 - submitted
28/10/2020, 06:45
General
- Target Invoice Overdue.exe
- Size 479KB
- Sample201028-5bvs1b457s
- SHA256 f030d590fcb9a74113d0e1e3b912bda207354996313320bee267f209be4a6129
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
smtp.eat-itailano.com
-
Port
587
-
Username
-
Password
LevyNE#4
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
- Looks for VirtualBox Guest Additions in registry 2 TTPs
- Looks for VMWare Tools registry key 2 TTPs
- Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
- 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 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
- Suspicious use of SetThreadContext 1 IoCs
- Suspicious behavior: EnumeratesProcesses 3 IoCs
- Suspicious behavior: RenamesItself 1 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Invoice Overdue.exe"C:\Users\Admin\AppData\Local\Temp\Invoice Overdue.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Invoice Overdue.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/3948-7-0x0000000009280000-0x00000000092E1000-memory.dmp
memory/3948-3-0x0000000007B60000-0x0000000007B61000-memory.dmp
memory/3948-4-0x0000000007660000-0x0000000007661000-memory.dmp
memory/3948-5-0x00000000051B0000-0x00000000051B1000-memory.dmp
memory/3948-6-0x0000000007AB0000-0x0000000007AC6000-memory.dmp
memory/3948-0-0x0000000073660000-0x0000000073D4E000-memory.dmp
memory/3948-8-0x000000000AC70000-0x000000000AC71000-memory.dmp
memory/3948-9-0x0000000009370000-0x0000000009371000-memory.dmp
memory/3948-1-0x00000000008C0000-0x00000000008C1000-memory.dmp
memory/3992-10-0x0000000000400000-0x000000000043C000-memory.dmp
memory/3992-13-0x0000000073660000-0x0000000073D4E000-memory.dmp
memory/3992-18-0x0000000005230000-0x0000000005231000-memory.dmp