Analysis
- max time kernel
144s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
22/05/2024, 18:05
General
- Target jpgcamscanner_20240521_0072345_JPEG.bat.exe
- Size 370KB
- Sample240522-wn6rasbc2w
- SHA256 05df6f3430171cb7db9fa5f6782b8f67b14079b6e1dffbb013c33ca91b1ad5d3
Malware Config
Extracted
-
agenttesla
-
Protocol
ftp
-
Host
ftp://ftp.instantprint.ro
-
Port
21
-
Username
-
Password
playmen123#@
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 4 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.
- 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
- 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\jpgcamscanner_20240521_0072345_JPEG.bat.exe"C:\Users\Admin\AppData\Local\Temp\jpgcamscanner_20240521_0072345_JPEG.bat.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\jpgcamscanner_20240521_0072345_JPEG.bat.exe"C:\Users\Admin\AppData\Local\Temp\jpgcamscanner_20240521_0072345_JPEG.bat.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
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Downloads
BgImage.dll
System.dll
nsDialogs.dll
memory/832-43-0x0000000036480000-0x00000000364D0000-memory.dmp
memory/832-44-0x00000000364E0000-0x0000000036572000-memory.dmp
memory/832-48-0x00000000779F1000-0x0000000077B11000-memory.dmp
memory/832-33-0x00000000016D0000-0x0000000002DA0000-memory.dmp
memory/832-34-0x0000000077A78000-0x0000000077A79000-memory.dmp
memory/832-46-0x00000000016D0000-0x0000000002DA0000-memory.dmp
memory/832-36-0x0000000077A95000-0x0000000077A96000-memory.dmp
memory/832-37-0x0000000000470000-0x00000000016C4000-memory.dmp
memory/832-45-0x00000000365A0000-0x00000000365AA000-memory.dmp
memory/832-39-0x0000000000470000-0x00000000004B2000-memory.dmp
memory/832-40-0x0000000035680000-0x0000000035C24000-memory.dmp
memory/832-41-0x00000000355A0000-0x0000000035606000-memory.dmp
memory/4744-30-0x0000000004C20000-0x00000000062F0000-memory.dmp
memory/4744-31-0x00000000779F1000-0x0000000077B11000-memory.dmp
memory/4744-38-0x0000000004C20000-0x00000000062F0000-memory.dmp
memory/4744-35-0x0000000004C20000-0x00000000062F0000-memory.dmp
memory/4744-32-0x0000000074854000-0x0000000074855000-memory.dmp