Analysis
- max time kernel
108s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
06/03/2023, 08:31
General
- Target Proforma Invoice.exe
- Size 270KB
- Sample230306-keqsyabc87
- SHA256 315ecb120b54f60b17626f16ca7283d002511ac41babfd4da930e94a8a0a3154
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
- 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 SetWindowsHookEx 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\Proforma Invoice.exe"C:\Users\Admin\AppData\Local\Temp\Proforma Invoice.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\lpijnr.exe"C:\Users\Admin\AppData\Local\Temp\lpijnr.exe" C:\Users\Admin\AppData\Local\Temp\gccxejw.v2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\lpijnr.exe"C:\Users\Admin\AppData\Local\Temp\lpijnr.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
-
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
gccxejw.v
lpijnr.exe
lpijnr.exe
lpijnr.exe
wvaywoxm.h
memory/3496-149-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-153-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-145-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3496-147-0x0000000005670000-0x0000000005C14000-memory.dmp
memory/3496-148-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3496-142-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3496-150-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-151-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-152-0x0000000005170000-0x00000000051D6000-memory.dmp
memory/3496-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/3496-154-0x00000000067E0000-0x0000000006872000-memory.dmp
memory/3496-155-0x0000000006890000-0x000000000689A000-memory.dmp
memory/3496-156-0x0000000006A60000-0x0000000006AB0000-memory.dmp
memory/3496-157-0x0000000006DC0000-0x0000000006F82000-memory.dmp
memory/3496-158-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-159-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-160-0x0000000002A40000-0x0000000002A50000-memory.dmp
memory/3496-161-0x0000000002A40000-0x0000000002A50000-memory.dmp