Analysis
- max time kernel
141s - max time network
137s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
18/05/2023, 17:48
General
- Target rShipmentDocumentHAWBR129724.exe
- Size 265KB
- Sample230518-wdevtscb4y
- SHA256 adbfb6e8fe8258eb1f95f737e75c5b28e42cfd901f3733c1748189efca49a2f1
Malware Config
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- Loads dropped DLL 1 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: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 5 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\rShipmentDocumentHAWBR129724.exe"C:\Users\Admin\AppData\Local\Temp\rShipmentDocumentHAWBR129724.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\rShipmentDocumentHAWBR129724.exe"C:\Users\Admin\AppData\Local\Temp\rShipmentDocumentHAWBR129724.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
wnrisrmrl.dll
memory/688-62-0x0000000000400000-0x0000000000441000-memory.dmp
memory/688-64-0x0000000000400000-0x0000000000441000-memory.dmp
memory/688-65-0x0000000000490000-0x00000000004C0000-memory.dmp
memory/688-66-0x00000000045D0000-0x0000000004610000-memory.dmp
memory/688-67-0x0000000000400000-0x0000000000441000-memory.dmp
memory/688-68-0x00000000045D0000-0x0000000004610000-memory.dmp
memory/688-69-0x00000000045D0000-0x0000000004610000-memory.dmp
memory/688-70-0x00000000045D0000-0x0000000004610000-memory.dmp
memory/688-89-0x00000000045D0000-0x0000000004610000-memory.dmp