Analysis
- max time kernel
108s - max time network
129s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
02/03/2023, 14:29
General
- Target P.O. No.4036041334 pdf.exe
- Size 488KB
- Sample230302-rtknssch71
- SHA256 d538dbe0fccb2e9edca59f0adf3161833adfed58c20a572b9e54295646460dbf
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). 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\P.O. No.4036041334 pdf.exe"C:\Users\Admin\AppData\Local\Temp\P.O. No.4036041334 pdf.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\uecgr.exe"C:\Users\Admin\AppData\Local\Temp\uecgr.exe" C:\Users\Admin\AppData\Local\Temp\hqqjfmnwyo.hr2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\uecgr.exe"C:\Users\Admin\AppData\Local\Temp\uecgr.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- 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
hqqjfmnwyo.hr
uecgr.exe
uecgr.exe
uecgr.exe
yswbp.jpr
memory/1464-150-0x0000000005090000-0x00000000050A0000-memory.dmp
memory/1464-153-0x0000000005090000-0x00000000050A0000-memory.dmp
memory/1464-146-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1464-147-0x0000000005650000-0x0000000005BF4000-memory.dmp
memory/1464-148-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1464-142-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1464-149-0x0000000005090000-0x00000000050A0000-memory.dmp
memory/1464-151-0x0000000005090000-0x00000000050A0000-memory.dmp
memory/1464-152-0x00000000050A0000-0x0000000005106000-memory.dmp
memory/1464-144-0x0000000000400000-0x0000000000441000-memory.dmp
memory/1464-154-0x0000000006860000-0x00000000068F2000-memory.dmp
memory/1464-155-0x0000000006900000-0x000000000690A000-memory.dmp
memory/1464-156-0x0000000006C10000-0x0000000006C60000-memory.dmp
memory/1464-157-0x0000000006E30000-0x0000000006FF2000-memory.dmp
memory/1464-158-0x0000000005090000-0x00000000050A0000-memory.dmp
memory/1464-159-0x0000000005090000-0x00000000050A0000-memory.dmp
memory/1464-160-0x0000000005090000-0x00000000050A0000-memory.dmp