Analysis
- max time kernel
149s - max time network
94s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
19/04/2026, 04:25
General
- Target EsoBR/EsoBR.txt
- Size 1KB
- Sample260419-e2fnlahw41
- SHA256 4419d58fada9dcaa739c7873c131eb2bbcf33cd3b6c5190fb94db134a108a3c0
Score
3/10
Malware Config
Signatures
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 1 IoCs
- Opens file in notepad (likely ransom note) 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\EsoBR\EsoBR.txt1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\EsoBR\EsoBR.txt2⤵
- Opens file in notepad (likely ransom note)
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3460-0-0x000002A6D8CA0000-0x000002A6D8DC0000-memory.dmp
memory/3460-2-0x000002A6D8CA0000-0x000002A6D8DC0000-memory.dmp
memory/3460-5-0x000002A6D8CA0000-0x000002A6D8DC0000-memory.dmp
memory/3460-6-0x000002A6D8CA0000-0x000002A6D8DC0000-memory.dmp
memory/3460-12-0x000002A6D8CA0000-0x000002A6D8DC0000-memory.dmp