Analysis
- max time kernel
63s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
14/02/2023, 10:09
General
- Target Order.pdf.exe
- Size 262KB
- Sample230214-l6s8tabh41
- SHA256 a5c26d42bb66fd537d2a68ca5e0aca1cf4f528f4c3b53b42cb483034cfd90e20
Malware Config
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 1 IoCs
- 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 1 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: EnumeratesProcesses 2 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 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\Order.pdf.exe"C:\Users\Admin\AppData\Local\Temp\Order.pdf.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\zhzvanj.exe"C:\Users\Admin\AppData\Local\Temp\zhzvanj.exe" C:\Users\Admin\AppData\Local\Temp\xerwe.kf2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\zhzvanj.exe"C:\Users\Admin\AppData\Local\Temp\zhzvanj.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
gnhlrilx.gqg
xerwe.kf
zhzvanj.exe
zhzvanj.exe
zhzvanj.exe
memory/4144-139-0x0000000004A20000-0x0000000004FC4000-memory.dmp
memory/4144-140-0x0000000004FD0000-0x000000000506C000-memory.dmp
memory/4144-141-0x0000000000400000-0x0000000000437000-memory.dmp
memory/4144-142-0x0000000005C80000-0x0000000005E42000-memory.dmp
memory/4144-143-0x0000000005E50000-0x0000000005EE2000-memory.dmp
memory/4144-144-0x0000000006060000-0x000000000606A000-memory.dmp