Analysis
- max time kernel
142s - max time network
111s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
22/02/2023, 08:26
General
- Target PI 160256.exe
- Size 296KB
- Sample230222-kbvbysae25
- SHA256 688caa06e305d2bd7218f806b5a5b21ec6ed4dda1284ae5c136f226be21735e9
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Executes dropped EXE 2 IoCs
- 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.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- 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 SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 7 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PI 160256.exe"C:\Users\Admin\AppData\Local\Temp\PI 160256.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\xmpegimi.exe"C:\Users\Admin\AppData\Local\Temp\xmpegimi.exe" C:\Users\Admin\AppData\Local\Temp\oxalzaivr.da2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\xmpegimi.exe"C:\Users\Admin\AppData\Local\Temp\xmpegimi.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
ixsghfz.uv
oxalzaivr.da
xmpegimi.exe
xmpegimi.exe
xmpegimi.exe
memory/1688-142-0x0000000000590000-0x0000000000592000-memory.dmp
memory/4896-151-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-154-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-146-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4896-148-0x0000000004960000-0x0000000004F04000-memory.dmp
memory/4896-149-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4896-150-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-143-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4896-152-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-153-0x0000000004FA0000-0x0000000005006000-memory.dmp
memory/4896-145-0x0000000000400000-0x0000000000442000-memory.dmp
memory/4896-155-0x0000000006160000-0x00000000061F2000-memory.dmp
memory/4896-156-0x0000000006200000-0x000000000620A000-memory.dmp
memory/4896-157-0x0000000006350000-0x00000000063A0000-memory.dmp
memory/4896-158-0x0000000006520000-0x00000000066E2000-memory.dmp
memory/4896-165-0x00000000066F0000-0x000000000678C000-memory.dmp
memory/4896-167-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-168-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-169-0x0000000004940000-0x0000000004950000-memory.dmp
memory/4896-170-0x0000000004940000-0x0000000004950000-memory.dmp