Analysis
- max time kernel
146s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
26/02/2024, 19:36
General
- Target 4987a29536eea903d1c43e7b63f02689.exe
- Size 2.6MB
- Sample240226-ya8pvaef7t
- SHA256 ed66e61018e80bdca358abfcc1a97b84b461e79a1ae39de70fa3cf2fdf463f9b
Malware Config
Extracted
-
socks5systemz
-
http://buqbirh.com/search/?q=67e28dd83d5cf57a4406a9177c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f571ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ef718c7e997993c
Signatures
- Detect Socks5Systemz Payload 3 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\4987a29536eea903d1c43e7b63f02689.exe"C:\Users\Admin\AppData\Local\Temp\4987a29536eea903d1c43e7b63f02689.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-9C9TL.tmp\4987a29536eea903d1c43e7b63f02689.tmp"C:\Users\Admin\AppData\Local\Temp\is-9C9TL.tmp\4987a29536eea903d1c43e7b63f02689.tmp" /SL5="$A00E6,2428594,54272,C:\Users\Admin\AppData\Local\Temp\4987a29536eea903d1c43e7b63f02689.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Media Builder\mmediabuilder.exe"C:\Users\Admin\AppData\Local\Media Builder\mmediabuilder.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Media Builder\mmediabuilder.exe"C:\Users\Admin\AppData\Local\Media Builder\mmediabuilder.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
mmediabuilder.exe
mmediabuilder.exe
mmediabuilder.exe
_iscrypt.dll
4987a29536eea903d1c43e7b63f02689.tmp
memory/220-45-0x0000000000400000-0x0000000000720000-memory.dmp
memory/220-46-0x0000000000400000-0x0000000000720000-memory.dmp
memory/220-50-0x0000000000400000-0x0000000000720000-memory.dmp
memory/220-49-0x0000000000400000-0x0000000000720000-memory.dmp
memory/896-1-0x0000000000400000-0x0000000000414000-memory.dmp
memory/896-54-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2988-57-0x0000000002240000-0x0000000002241000-memory.dmp
memory/2988-7-0x0000000002240000-0x0000000002241000-memory.dmp
memory/2988-55-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/4092-60-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-76-0x0000000000990000-0x0000000000A32000-memory.dmp
memory/4092-53-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-61-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-64-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-67-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-70-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-73-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-74-0x0000000000990000-0x0000000000A32000-memory.dmp
memory/4092-56-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-81-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-84-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-85-0x0000000000990000-0x0000000000A32000-memory.dmp
memory/4092-88-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-91-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-94-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-97-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-101-0x0000000000400000-0x0000000000720000-memory.dmp
memory/4092-104-0x0000000000400000-0x0000000000720000-memory.dmp