Analysis
- max time kernel
143s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
05/12/2024, 02:54
General
- Target 935cbed36f8d1f6e18a988bc200c075039f4dc6ffb1a87e1a72c9f8b393fe4fa.exe
- Size 600KB
- Sample241205-dd3yjs1ldn
- SHA256 935cbed36f8d1f6e18a988bc200c075039f4dc6ffb1a87e1a72c9f8b393fe4fa
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.concaribe.com
-
Port
21
-
Username
-
Password
ro}UWgz#!38E
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Agenttesla family
- Guloader family
- Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 2 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 3 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.
- 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).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- 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\935cbed36f8d1f6e18a988bc200c075039f4dc6ffb1a87e1a72c9f8b393fe4fa.exe"C:\Users\Admin\AppData\Local\Temp\935cbed36f8d1f6e18a988bc200c075039f4dc6ffb1a87e1a72c9f8b393fe4fa.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\935cbed36f8d1f6e18a988bc200c075039f4dc6ffb1a87e1a72c9f8b393fe4fa.exe"C:\Users\Admin\AppData\Local\Temp\935cbed36f8d1f6e18a988bc200c075039f4dc6ffb1a87e1a72c9f8b393fe4fa.exe"2⤵
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
corruptive.ini
System.dll
memory/1008-21-0x00000000030B0000-0x00000000062AE000-memory.dmp
memory/1008-18-0x00000000030B0000-0x00000000062AE000-memory.dmp
memory/1008-19-0x0000000077C21000-0x0000000077D41000-memory.dmp
memory/1008-20-0x00000000750C5000-0x00000000750C6000-memory.dmp
memory/1008-17-0x00000000030B0000-0x00000000062AE000-memory.dmp
memory/4116-22-0x0000000000490000-0x00000000016E4000-memory.dmp
memory/4116-23-0x0000000000490000-0x00000000004D2000-memory.dmp
memory/4116-24-0x00000000372B0000-0x0000000037854000-memory.dmp
memory/4116-25-0x0000000037210000-0x0000000037276000-memory.dmp
memory/4116-26-0x0000000038280000-0x00000000382D0000-memory.dmp
memory/4116-27-0x00000000382D0000-0x0000000038362000-memory.dmp
memory/4116-28-0x00000000383A0000-0x00000000383AA000-memory.dmp