Analysis
- max time kernel
141s - max time network
136s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
15/06/2023, 08:25
General
- Target df4f4d8f3a20196e3cbeddfad102cfa5.exe
- Size 299KB
- Sample230615-kbabsafb99
- SHA256 ca63861d243fe426a35ed766b47557c6249f9a8dba8ee1cc737eade5904aa4c4
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\df4f4d8f3a20196e3cbeddfad102cfa5.exe"C:\Users\Admin\AppData\Local\Temp\df4f4d8f3a20196e3cbeddfad102cfa5.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\df4f4d8f3a20196e3cbeddfad102cfa5.exe"C:\Users\Admin\AppData\Local\Temp\df4f4d8f3a20196e3cbeddfad102cfa5.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
afxcyprzss.dll
afxcyprzss.dll
memory/1212-63-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1212-66-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1212-67-0x00000000044B0000-0x00000000044E0000-memory.dmp
memory/1212-68-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1212-69-0x0000000004470000-0x00000000044B0000-memory.dmp
memory/1212-71-0x0000000004470000-0x00000000044B0000-memory.dmp
memory/1212-70-0x0000000004470000-0x00000000044B0000-memory.dmp
memory/1972-62-0x0000000000470000-0x0000000000472000-memory.dmp