Analysis
- max time kernel
147s - max time network
156s - platform
windows11-21h2_x64 - resource
win11-20240802-en - resource tags
- submitted
11/08/2024, 01:07
General
- Target 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe
- Size 4.5MB
- Sample240811-bg5v7ssaqa
- SHA256 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f
Malware Config
Signatures
- Detect Socks5Systemz Payload 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 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.
- 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp"C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp" /SL5="$8027A,4429287,54272,C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
avicodec32_64.exe
_iscrypt.dll
_isdecmp.dll
28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp
memory/3196-90-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-77-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-112-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-109-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-105-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-102-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-99-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-65-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-96-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-93-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-68-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-71-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-74-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-85-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-80-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-82-0x0000000002A70000-0x0000000002B12000-memory.dmp
memory/4408-12-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4408-67-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4612-61-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4612-62-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4612-60-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4612-58-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4844-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4844-66-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4844-2-0x0000000000401000-0x000000000040B000-memory.dmp