Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
03/08/2024, 04:08
General
- Target 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe
- Size 3.8MB
- Sample240803-eqdpvsxend
- SHA256 0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a
Malware Config
Signatures
- Detect Socks5Systemz Payload 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- Unexpected DNS network traffic destination 3 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\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe"C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-O0EJ3.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp"C:\Users\Admin\AppData\Local\Temp\is-O0EJ3.tmp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp" /SL5="$6023E,3759147,54272,C:\Users\Admin\AppData\Local\Temp\0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.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\AC3Filter\ac3filter32_64.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
ac3filter32_64.exe
_iscrypt.dll
0b73b6a445183fb265e533d811bebf9285d4618166b01f7d8f63dcc51aa93f8a.tmp
memory/1440-52-0x0000000000400000-0x0000000000880000-memory.dmp
memory/1440-53-0x0000000000400000-0x0000000000880000-memory.dmp
memory/1440-55-0x0000000000400000-0x0000000000880000-memory.dmp
memory/1440-57-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4144-60-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4144-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4144-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4252-62-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-84-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-105-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-65-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-68-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-71-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-74-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-77-0x0000000000AC0000-0x0000000000B62000-memory.dmp
memory/4252-79-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-102-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-87-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-90-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-93-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-96-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4252-99-0x0000000000400000-0x0000000000880000-memory.dmp
memory/4468-61-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4468-13-0x0000000000400000-0x00000000004BD000-memory.dmp