Analysis
- max time kernel
145s - max time network
134s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
01/05/2024, 04:13
General
- Target Transferencias90900-54576097665.exe
- Size 426KB
- Sample240501-es3f1afd7w
- SHA256 c133857c1d5b7c0f19499dae8fc16c74fd34c67d095f84030b3026acd88e3fcc
Malware Config
Extracted
-
agenttesla
-
Protocol
smtp
-
Host
mail.biotem.com.tr
-
Port
587
-
Username
-
Password
alesta.,alesta.,
-
Email to
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.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
- 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 Windows 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\Transferencias90900-54576097665.exe"C:\Users\Admin\AppData\Local\Temp\Transferencias90900-54576097665.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Transferencias90900-54576097665.exe"C:\Users\Admin\AppData\Local\Temp\Transferencias90900-54576097665.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
Loading Replay Monitor...
Downloads
System.dll
memory/1412-32-0x00000000378C0000-0x0000000037910000-memory.dmp
memory/1412-33-0x0000000037920000-0x00000000379B2000-memory.dmp
memory/1412-36-0x00000000016D0000-0x0000000003E9E000-memory.dmp
memory/1412-12-0x00000000016D0000-0x0000000003E9E000-memory.dmp
memory/1412-29-0x0000000000470000-0x00000000004B2000-memory.dmp
memory/1412-26-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/1412-34-0x00000000379E0000-0x00000000379EA000-memory.dmp
memory/1412-31-0x00000000372D0000-0x0000000037336000-memory.dmp
memory/1412-27-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/1412-30-0x0000000036C20000-0x00000000371C4000-memory.dmp
memory/4828-25-0x0000000004A20000-0x00000000071EE000-memory.dmp
memory/4828-9-0x0000000004A20000-0x00000000071EE000-memory.dmp
memory/4828-28-0x0000000004A20000-0x00000000071EE000-memory.dmp
memory/4828-10-0x0000000077B51000-0x0000000077C71000-memory.dmp
memory/4828-11-0x0000000010000000-0x0000000010006000-memory.dmp