Analysis
- max time kernel
148s - max time network
157s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
18/02/2026, 09:26
General
- Target E-sign Payment confirmation and Agreement.vbs
- Size 1.5MB
- Sample260218-legqpsez8d
- SHA256 c3a1146bf6e791105fdbd64cc28f99a7ff82f356ff8c5c155755bdc0b549c826
Malware Config
Extracted
-
quasar
-
encryption_key
2B0805F4D2EF415F2B88DDF77A6C83D5F5D0D7AF
-
key_salt
5a23f8394640cb9e40658446a04c0bbae82dc93d0470e1b2a406a90fd2520382
-
reconnect_delay
3000
Signatures
- Detects DonutLoader 2 IoCs
- DonutLoader
DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.
- Donutloader family
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- Quasar payload 1 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 1 IoCs
Processes
-
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\E-sign Payment confirmation and Agreement.vbs"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\app_files_202621892644\application.exe"C:\Users\Admin\AppData\Local\Temp\app_files_202621892644\application.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
application.exe
memory/404-18-0x0000015B07EF0000-0x0000015B07EFC000-memory.dmp
memory/5208-26-0x000001BAC3380000-0x000001BAC33A2000-memory.dmp
memory/5208-29-0x000001BAC2E20000-0x000001BAC2E32000-memory.dmp
memory/5208-12-0x000001BAC2E40000-0x000001BAC2E50000-memory.dmp
memory/5208-13-0x000001BAC2E40000-0x000001BAC2E50000-memory.dmp
memory/5208-14-0x000001BAAA490000-0x000001BAAA4C4000-memory.dmp
memory/5208-30-0x000001BAC2E40000-0x000001BAC2E50000-memory.dmp
memory/5208-16-0x000001BAC31D0000-0x000001BAC320C000-memory.dmp
memory/5208-17-0x000001BAC3190000-0x000001BAC319A000-memory.dmp
memory/5208-10-0x000001BAC2E40000-0x000001BAC2E50000-memory.dmp
memory/5208-19-0x000001BAC31A0000-0x000001BAC31C6000-memory.dmp
memory/5208-20-0x000001BAC3220000-0x000001BAC3228000-memory.dmp
memory/5208-21-0x000001BAC3230000-0x000001BAC3292000-memory.dmp
memory/5208-22-0x000001BAC32B0000-0x000001BAC32F2000-memory.dmp
memory/5208-23-0x000001BAC3210000-0x000001BAC321A000-memory.dmp
memory/5208-24-0x000001BAC3290000-0x000001BAC329A000-memory.dmp
memory/5208-25-0x000001BAC3310000-0x000001BAC332A000-memory.dmp
memory/5208-9-0x000001BAAA190000-0x000001BAAA287000-memory.dmp
memory/5208-27-0x000001BAC33B0000-0x000001BAC33E8000-memory.dmp
memory/5208-11-0x000001BAC2D10000-0x000001BAC2E04000-memory.dmp
memory/5208-28-0x000001BAAA420000-0x000001BAAA42C000-memory.dmp
memory/5208-15-0x000001BAC3170000-0x000001BAC3182000-memory.dmp
memory/5208-31-0x000001BAC2E40000-0x000001BAC2E50000-memory.dmp
memory/5208-36-0x000001BAC32A0000-0x000001BAC32B2000-memory.dmp
memory/5208-47-0x000001BAC33F0000-0x000001BAC343A000-memory.dmp
memory/5208-48-0x000001BAC3440000-0x000001BAC348C000-memory.dmp
memory/5208-49-0x000001BAC3490000-0x000001BAC3510000-memory.dmp
memory/5208-59-0x000001BAC3600000-0x000001BAC3614000-memory.dmp
memory/5208-58-0x000001BAC35F0000-0x000001BAC3600000-memory.dmp
memory/5208-57-0x000001BAC35C0000-0x000001BAC35F2000-memory.dmp
memory/5208-56-0x000001BAC3590000-0x000001BAC35C4000-memory.dmp
memory/5208-55-0x000001BAC3580000-0x000001BAC3596000-memory.dmp
memory/5208-54-0x000001BAC3370000-0x000001BAC337C000-memory.dmp
memory/5208-53-0x000001BAC3300000-0x000001BAC330A000-memory.dmp
memory/5208-52-0x000001BAC3540000-0x000001BAC357A000-memory.dmp
memory/5208-51-0x000001BAC32F0000-0x000001BAC3304000-memory.dmp
memory/5208-50-0x000001BAC3510000-0x000001BAC353A000-memory.dmp
memory/5208-60-0x000001BAC2E40000-0x000001BAC2E50000-memory.dmp