Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20260911-en - resource tags
- submitted
18/09/2026, 03:52
General
- Target ac1d64cf0f0327d970b772a51a6d7350d03ed67e2ea841f9df5cf539328fd646.exe
- Size 178KB
- Sample260918-efcd2shp3s
- SHA256 ac1d64cf0f0327d970b772a51a6d7350d03ed67e2ea841f9df5cf539328fd646
Malware Config
Signatures
- Family: Gepys
Gepys is a Windows trojan.
- Detects Gepys trojan 11 IoCs
- Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
- ASPack v2.12-2.42 2 IoCs
Detects executables packed with ASPack v2.12-2.42
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Drops file in Program Files directory 4 IoCs
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes
-
C:\Users\Admin\AppData\Local\Temp\ac1d64cf0f0327d970b772a51a6d7350d03ed67e2ea841f9df5cf539328fd646.exe"C:\Users\Admin\AppData\Local\Temp\ac1d64cf0f0327d970b772a51a6d7350d03ed67e2ea841f9df5cf539328fd646.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
-
C:\PROGRA~3\Mozilla\mlrbybn.exeC:\PROGRA~3\Mozilla\mlrbybn.exe -eppdizk1⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
-
C:\PROGRA~3\Mozilla\mlrbybn.exeC:\PROGRA~3\Mozilla\mlrbybn.exe1⤵
- Executes dropped EXE
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
-
C:\PROGRA~3\Mozilla\mlrbybn.exeC:\PROGRA~3\Mozilla\mlrbybn.exe -eppdizk1⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
mlrbybn.exe
mlrbybn.exe
qszsebi.dll
memory/1788-11-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1788-24-0x0000000000400000-0x000000000045B000-memory.dmp
memory/1788-13-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1788-9-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1788-8-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1788-10-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1816-19-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1816-21-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1816-27-0x0000000000400000-0x000000000045B000-memory.dmp
memory/1816-18-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1816-17-0x0000000000400000-0x000000000045E000-memory.dmp
memory/1816-20-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2288-36-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2288-35-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2288-40-0x0000000010000000-0x000000001001B000-memory.dmp
memory/2288-39-0x0000000000400000-0x000000000045B000-memory.dmp
memory/2288-32-0x00000000005F0000-0x0000000000606000-memory.dmp
memory/2288-33-0x0000000000400000-0x000000000045E000-memory.dmp
memory/2288-31-0x0000000010000000-0x000000001001B000-memory.dmp
memory/2288-37-0x00000000005F0000-0x0000000000606000-memory.dmp
memory/2288-34-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4380-0-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4380-4-0x0000000000400000-0x000000000045B000-memory.dmp
memory/4380-2-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4380-1-0x0000000000400000-0x000000000045E000-memory.dmp
memory/4380-15-0x0000000001F60000-0x0000000001FBB000-memory.dmp
memory/4380-3-0x0000000001F60000-0x0000000001FBB000-memory.dmp
memory/4380-14-0x0000000000400000-0x000000000045B000-memory.dmp