Analysis
- max time kernel
145s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
02/03/2023, 10:38
General
- Target 4018695.exe
- Size 329KB
- Sample230302-mpdbpsce58
- SHA256 51d790b7e7c7e1f1bf83e0c7f94dfe682ec48e6afeeaa61b0b0db7f8f187ea29
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\4018695.exe"C:\Users\Admin\AppData\Local\Temp\4018695.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\valglsrdh.exe"C:\Users\Admin\AppData\Local\Temp\valglsrdh.exe" C:\Users\Admin\AppData\Local\Temp\xwwpxekuvi.zbe2⤵
- 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\valglsrdh.exe"C:\Users\Admin\AppData\Local\Temp\valglsrdh.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
szuvdd.zm
valglsrdh.exe
valglsrdh.exe
valglsrdh.exe
xwwpxekuvi.zbe
memory/1956-150-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-154-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-146-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1956-148-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1956-149-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-143-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1956-151-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-152-0x0000000005950000-0x0000000005EF4000-memory.dmp
memory/1956-153-0x0000000005280000-0x00000000052E6000-memory.dmp
memory/1956-145-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1956-155-0x0000000006A50000-0x0000000006AE2000-memory.dmp
memory/1956-156-0x0000000006A00000-0x0000000006A0A000-memory.dmp
memory/1956-157-0x0000000006BA0000-0x0000000006BF0000-memory.dmp
memory/1956-158-0x0000000006F50000-0x0000000007112000-memory.dmp
memory/1956-159-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-160-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-161-0x0000000005390000-0x00000000053A0000-memory.dmp
memory/1956-162-0x0000000005390000-0x00000000053A0000-memory.dmp