Analysis
- max time kernel
143s - max time network
125s - platform
windows10-2004_x64 - resource
win10v2004-20230221-en - resource tags
- submitted
21/02/2023, 14:18
General
- Target PAYMENT SLIP.exe
- Size 419KB
- Sample230221-rl9yqagh91
- SHA256 b3a8ac538be0b9db84f62a419be5bf4240293a5c90dd1cb8fb6cfd1f86356207
Malware Config
Signatures
- Snake Keylogger
Keylogger and Infostealer first seen in November 2020.
- Snake Keylogger payload 5 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\PAYMENT SLIP.exe"C:\Users\Admin\AppData\Local\Temp\PAYMENT SLIP.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\jcejtqt.exe"C:\Users\Admin\AppData\Local\Temp\jcejtqt.exe" C:\Users\Admin\AppData\Local\Temp\btrelskmd.lwm2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\jcejtqt.exe"C:\Users\Admin\AppData\Local\Temp\jcejtqt.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
btrelskmd.lwm
jcejtqt.exe
jcejtqt.exe
jcejtqt.exe
wiuin.k
memory/2304-140-0x0000000000530000-0x0000000000532000-memory.dmp
memory/3808-148-0x0000000002470000-0x000000000250C000-memory.dmp
memory/3808-151-0x0000000004BF0000-0x0000000004C00000-memory.dmp
memory/3808-145-0x0000000000400000-0x0000000000437000-memory.dmp
memory/3808-147-0x0000000004C00000-0x00000000051A4000-memory.dmp
memory/3808-142-0x0000000000400000-0x0000000000437000-memory.dmp
memory/3808-149-0x0000000000400000-0x0000000000437000-memory.dmp
memory/3808-150-0x0000000004BF0000-0x0000000004C00000-memory.dmp
memory/3808-144-0x0000000000400000-0x0000000000437000-memory.dmp
memory/3808-152-0x0000000004BF0000-0x0000000004C00000-memory.dmp
memory/3808-153-0x0000000005B60000-0x0000000005D22000-memory.dmp
memory/3808-154-0x0000000005D30000-0x0000000005DC2000-memory.dmp
memory/3808-155-0x0000000005E40000-0x0000000005E4A000-memory.dmp
memory/3808-157-0x0000000004BF0000-0x0000000004C00000-memory.dmp
memory/3808-158-0x0000000004BF0000-0x0000000004C00000-memory.dmp
memory/3808-159-0x0000000004BF0000-0x0000000004C00000-memory.dmp
memory/3808-160-0x0000000004BF0000-0x0000000004C00000-memory.dmp