Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
14/06/2024, 01:58
General
- Target cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.exe
- Size 4.7MB
- Sample240614-cd72tsvdmr
- SHA256 cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd
Malware Config
Extracted
-
socks5systemz
-
bhfmxyp.com
Signatures
- Detect Socks5Systemz Payload 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Detects executables packed with VMProtect. 18 IoCs
- 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.
- 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\cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.exe"C:\Users\Admin\AppData\Local\Temp\cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-2U4KA.tmp\cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.tmp"C:\Users\Admin\AppData\Local\Temp\is-2U4KA.tmp\cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.tmp" /SL5="$6016E,4728276,54272,C:\Users\Admin\AppData\Local\Temp\cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
freeaudioconverter.exe
cdb3c6dc6768edd8a4be613227587f9e405dcd4476502db1a55f9573bf8bcccd.tmp
_iscrypt.dll
memory/1148-16-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1148-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1892-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1892-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1892-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3056-95-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-82-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-67-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-113-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-110-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-70-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-73-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-76-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-79-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-107-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-85-0x00000000025B0000-0x0000000002652000-memory.dmp
memory/3056-87-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-92-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-104-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-98-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3056-101-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3888-59-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3888-64-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3888-60-0x0000000000400000-0x00000000006FA000-memory.dmp
memory/3888-63-0x0000000000400000-0x00000000006FA000-memory.dmp