Analysis
- max time kernel
140s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
04/12/2024, 10:44
General
- Target a10e959289c077bc452de5c48abd7262.exe
- Size 588KB
- Sample241204-ms2hpsykaq
- SHA256 e246806c6b16a736f29c6c3677c9f9263c8a0dc347a92a4f2606e93b13aec707
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\a10e959289c077bc452de5c48abd7262.exe"C:\Users\Admin\AppData\Local\Temp\a10e959289c077bc452de5c48abd7262.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\a10e959289c077bc452de5c48abd7262.exe"C:\Users\Admin\AppData\Local\Temp\a10e959289c077bc452de5c48abd7262.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/100-30-0x0000000035A30000-0x0000000035A96000-memory.dmp
memory/100-32-0x0000000036490000-0x00000000364E0000-memory.dmp
memory/100-35-0x00000000772D1000-0x00000000773F1000-memory.dmp
memory/100-34-0x00000000365B0000-0x00000000365BA000-memory.dmp
memory/100-21-0x00000000016F0000-0x0000000002C33000-memory.dmp
memory/100-33-0x00000000364E0000-0x0000000036572000-memory.dmp
memory/100-23-0x0000000077358000-0x0000000077359000-memory.dmp
memory/100-24-0x00000000016F0000-0x0000000002C33000-memory.dmp
memory/100-25-0x0000000077375000-0x0000000077376000-memory.dmp
memory/100-27-0x00000000772D1000-0x00000000773F1000-memory.dmp
memory/100-26-0x0000000000490000-0x00000000016E4000-memory.dmp
memory/100-28-0x0000000000490000-0x00000000004D2000-memory.dmp
memory/100-29-0x0000000035480000-0x0000000035A24000-memory.dmp
memory/4452-22-0x00000000030C0000-0x0000000004603000-memory.dmp
memory/4452-17-0x00000000030C0000-0x0000000004603000-memory.dmp
memory/4452-18-0x00000000772D1000-0x00000000773F1000-memory.dmp
memory/4452-19-0x00000000030C0000-0x0000000004603000-memory.dmp
memory/4452-20-0x0000000074775000-0x0000000074776000-memory.dmp