Analysis
- max time kernel
141s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
30/05/2024, 14:00
General
- Target 41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe
- Size 4.8MB
- Sample240530-rbfl5aah9w
- SHA256 41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2
Malware Config
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.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp"C:\Users\Admin\AppData\Local\Temp\is-T9P5Q.tmp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp" /SL5="$5006C,4732976,54272,C:\Users\Admin\AppData\Local\Temp\41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe"C:\Users\Admin\AppData\Local\5K Player\5kplayer32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
5kplayer32.exe
_iscrypt.dll
41616e9ec10e24b1d3b4d1e53c6be8ae0e5c3e10b8d81a3cdd640002041693d2.tmp
memory/448-69-0x0000000000400000-0x0000000000414000-memory.dmp
memory/448-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/448-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2748-95-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-85-0x0000000000A30000-0x0000000000AD2000-memory.dmp
memory/2748-119-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-67-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-68-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-116-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-111-0x0000000000A30000-0x0000000000AD2000-memory.dmp
memory/2748-71-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-73-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-75-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-78-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-81-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-84-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-112-0x0000000000A30000-0x0000000000AD2000-memory.dmp
memory/2748-89-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-110-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-98-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-101-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-104-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2748-107-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2924-63-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2924-62-0x0000000000400000-0x0000000000745000-memory.dmp
memory/2924-59-0x0000000000400000-0x0000000000745000-memory.dmp
memory/3000-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3000-70-0x0000000000400000-0x00000000004BA000-memory.dmp