Analysis
- max time kernel
142s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20230831-en - resource tags
- submitted
05/09/2023, 13:10
General
- Target 41ece53ba5688f97959fa0ebdbfb979c0b60ee534e05b094bae8cef005875876.exe
- Size 347KB
- Sample230905-qectzafe4w
- SHA256 41ece53ba5688f97959fa0ebdbfb979c0b60ee534e05b094bae8cef005875876
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 1 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).
- 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\41ece53ba5688f97959fa0ebdbfb979c0b60ee534e05b094bae8cef005875876.exe"C:\Users\Admin\AppData\Local\Temp\41ece53ba5688f97959fa0ebdbfb979c0b60ee534e05b094bae8cef005875876.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\wffwkdw.exe"C:\Users\Admin\AppData\Local\Temp\wffwkdw.exe"2⤵
- 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\wffwkdw.exe"C:\Users\Admin\AppData\Local\Temp\wffwkdw.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
phtwowsc.dqt
wffwkdw.exe
wffwkdw.exe
wffwkdw.exe
memory/2740-5-0x00000000006F0000-0x00000000006F2000-memory.dmp
memory/4408-15-0x0000000004B30000-0x0000000004B40000-memory.dmp
memory/4408-19-0x0000000004A20000-0x0000000004A86000-memory.dmp
memory/4408-11-0x0000000000400000-0x0000000000441000-memory.dmp
memory/4408-13-0x0000000000400000-0x0000000000441000-memory.dmp
memory/4408-14-0x0000000074650000-0x0000000074E00000-memory.dmp
memory/4408-8-0x0000000000400000-0x0000000000441000-memory.dmp
memory/4408-16-0x0000000004B30000-0x0000000004B40000-memory.dmp
memory/4408-17-0x0000000004B40000-0x00000000050E4000-memory.dmp
memory/4408-18-0x0000000004B30000-0x0000000004B40000-memory.dmp
memory/4408-10-0x0000000000400000-0x0000000000441000-memory.dmp
memory/4408-20-0x00000000061C0000-0x0000000006252000-memory.dmp
memory/4408-21-0x00000000062C0000-0x00000000062CA000-memory.dmp
memory/4408-22-0x0000000006350000-0x00000000063A0000-memory.dmp
memory/4408-23-0x0000000006550000-0x0000000006712000-memory.dmp
memory/4408-24-0x0000000074650000-0x0000000074E00000-memory.dmp
memory/4408-25-0x0000000004B30000-0x0000000004B40000-memory.dmp
memory/4408-27-0x0000000004B30000-0x0000000004B40000-memory.dmp