Analysis
- max time kernel
142s - max time network
116s - platform
windows7_x64 - resource
win7-20230220-en - resource tags
- submitted
13/05/2023, 22:56
General
- Target PreAlertDebitNote.xlsx.exe
- Size 284KB
- Sample230513-2wtplacb4y
- SHA256 aa68121f50bc718bfec09a7a0686ad001d01a9cbe85f36849a649c4b6e55006d
Malware Config
Extracted
-
agenttesla
-
https://api.telegram.org/bot5920132669:AAHpkofPc-DhM0smIt_tpRWpf91Nz1cUW7o/
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: 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\PreAlertDebitNote.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\PreAlertDebitNote.xlsx.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\PreAlertDebitNote.xlsx.exe"C:\Users\Admin\AppData\Local\Temp\PreAlertDebitNote.xlsx.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
dsuecqh.dll
memory/2024-61-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2024-63-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2024-64-0x0000000000400000-0x0000000000441000-memory.dmp
memory/2024-65-0x0000000001E70000-0x0000000001EA0000-memory.dmp
memory/2024-66-0x00000000045D0000-0x0000000004610000-memory.dmp
memory/2024-67-0x00000000045D0000-0x0000000004610000-memory.dmp
memory/2024-86-0x00000000045D0000-0x0000000004610000-memory.dmp