Analysis
- max time kernel
142s - max time network
135s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
- submitted
27/03/2023, 10:19
General
- Target fedbc261ff4e365bd324203cc7996816.exe
- Size 253KB
- Sample230327-mch2esfa3y
- SHA256 38e91c926eff66b2fec2ae584d21de09d49cb34a69175a883ddb426c6624d13b
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\fedbc261ff4e365bd324203cc7996816.exe"C:\Users\Admin\AppData\Local\Temp\fedbc261ff4e365bd324203cc7996816.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\uuixihpzwh.exe"C:\Users\Admin\AppData\Local\Temp\uuixihpzwh.exe" C:\Users\Admin\AppData\Local\Temp\rsbexlc.j2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\uuixihpzwh.exe"C:\Users\Admin\AppData\Local\Temp\uuixihpzwh.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
nmscm.zk
rsbexlc.j
uuixihpzwh.exe
uuixihpzwh.exe
uuixihpzwh.exe
memory/3052-140-0x0000000000580000-0x0000000000582000-memory.dmp
memory/4144-148-0x0000000004FA0000-0x000000000503C000-memory.dmp
memory/4144-153-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-145-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4144-147-0x00000000049F0000-0x0000000004F94000-memory.dmp
memory/4144-142-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4144-151-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-150-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-149-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4144-152-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-144-0x0000000000400000-0x0000000000438000-memory.dmp
memory/4144-154-0x0000000005C90000-0x0000000005E52000-memory.dmp
memory/4144-155-0x0000000005E60000-0x0000000005EF2000-memory.dmp
memory/4144-156-0x0000000006060000-0x000000000606A000-memory.dmp
memory/4144-158-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-159-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-160-0x00000000049E0000-0x00000000049F0000-memory.dmp
memory/4144-161-0x00000000049E0000-0x00000000049F0000-memory.dmp