Analysis
- max time kernel
144s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
21/02/2023, 14:18
General
- Target MY27758783895.exe
- Size 251KB
- Sample230221-rl9mysgh9w
- SHA256 5f935489fa1a58fe71aead038c33240f6cf5e2382ccc563ee01a3f9efb68499d
Malware Config
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 4 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\MY27758783895.exe"C:\Users\Admin\AppData\Local\Temp\MY27758783895.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\fkwlvwjxn.exe"C:\Users\Admin\AppData\Local\Temp\fkwlvwjxn.exe" C:\Users\Admin\AppData\Local\Temp\hislzgdqza.rw2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\fkwlvwjxn.exe"C:\Users\Admin\AppData\Local\Temp\fkwlvwjxn.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
fkwlvwjxn.exe
fkwlvwjxn.exe
fkwlvwjxn.exe
hislzgdqza.rw
pyukge.tpd
memory/828-148-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-156-0x0000000005E00000-0x0000000005E0A000-memory.dmp
memory/828-144-0x0000000000400000-0x0000000000437000-memory.dmp
memory/828-145-0x0000000000400000-0x0000000000437000-memory.dmp
memory/828-147-0x0000000000400000-0x0000000000437000-memory.dmp
memory/828-161-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-149-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-150-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-151-0x0000000004960000-0x0000000004F04000-memory.dmp
memory/828-152-0x0000000004840000-0x00000000048DC000-memory.dmp
memory/828-153-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-154-0x0000000005A10000-0x0000000005BD2000-memory.dmp
memory/828-155-0x0000000005BE0000-0x0000000005C72000-memory.dmp
memory/828-142-0x0000000000400000-0x0000000000437000-memory.dmp
memory/828-158-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-159-0x0000000004950000-0x0000000004960000-memory.dmp
memory/828-160-0x0000000004950000-0x0000000004960000-memory.dmp
memory/4936-140-0x00000000004A0000-0x00000000004A2000-memory.dmp