Analysis
- max time kernel
149s - max time network
153s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
06/04/2026, 07:22
General
- Target Net-Worm.Sasser.exe
- Size 15KB
- Sample260406-h7fsbsf191
- SHA256 09398d3f5cc102f7d932b765036e1ac1ff5dc27405d7357b81eaf48ca8ec71b8
Malware Config
Signatures
- Detects Sasser 7 IoCs
- Sasser
Sasser is a Windows worm written in C.
- Sasser family
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 2 IoCs
- Drops file in Windows directory 3 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exe"C:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exe"1⤵
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exeC:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exe 127.30.87.722⤵
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exeC:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exe 127.27.150.722⤵
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exeC:\Users\Admin\AppData\Local\Temp\Net-Worm.Sasser.exe 127.178.27.1542⤵
- System Location Discovery: System Language Discovery
-
-
C:\Windows\avserve2.exeC:\Windows\avserve2.exe1⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
avserve2.exe
memory/468-14-0x0000000000880000-0x00000000008FB000-memory.dmp
memory/468-15-0x0000000000400000-0x000000000041A000-memory.dmp
memory/468-13-0x0000000000510000-0x0000000000511000-memory.dmp
memory/1516-31-0x0000000000860000-0x00000000008DB000-memory.dmp
memory/1516-32-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3464-8-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3464-7-0x0000000000650000-0x00000000006CB000-memory.dmp
memory/3464-3-0x0000000000400000-0x000000000041A000-memory.dmp
memory/3464-4-0x0000000000510000-0x0000000000511000-memory.dmp
memory/4092-16-0x00000000009E0000-0x0000000000A5B000-memory.dmp
memory/4092-23-0x0000000000400000-0x000000000041A000-memory.dmp
memory/4092-0-0x0000000000400000-0x000000000041A000-memory.dmp
memory/4092-1-0x00000000005F0000-0x00000000005F1000-memory.dmp
memory/5684-5-0x0000000000400000-0x000000000041A000-memory.dmp
memory/5684-9-0x0000000000870000-0x00000000008EB000-memory.dmp
memory/5684-10-0x0000000000400000-0x000000000041A000-memory.dmp
memory/5684-6-0x00000000005F0000-0x00000000005F1000-memory.dmp