Analysis
- max time kernel
141s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
29/05/2024, 18:15
General
- Target 40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.exe
- Size 6.1MB
- Sample240529-wweb1sdf89
- SHA256 40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76
Malware Config
Signatures
- Detect Socks5Systemz Payload 3 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.
- 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\40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.exe"C:\Users\Admin\AppData\Local\Temp\40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-4LFSO.tmp\40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.tmp"C:\Users\Admin\AppData\Local\Temp\is-4LFSO.tmp\40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.tmp" /SL5="$C005C,6162972,54272,C:\Users\Admin\AppData\Local\Temp\40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe"C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe"C:\Users\Admin\AppData\Local\Ringtone Maker FE\ringtonemakerfe.exe" -s3⤵
- Executes dropped EXE
-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
ringtonemakerfe.exe
40fdeba9374448f8ca122ba371626c57e61984e20cb66f98192451185b59bb76.tmp
_iscrypt.dll
_isdecmp.dll
memory/1368-100-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-86-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-124-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-121-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-117-0x0000000000AD0000-0x0000000000B72000-memory.dmp
memory/1368-116-0x0000000000AD0000-0x0000000000B72000-memory.dmp
memory/1368-115-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-74-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-112-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-109-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-77-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-80-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-83-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-106-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-89-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-92-0x0000000000AD0000-0x0000000000B72000-memory.dmp
memory/1368-95-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1368-103-0x0000000000400000-0x0000000000791000-memory.dmp
memory/1556-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1556-76-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/2392-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2392-75-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2392-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/4388-69-0x0000000000400000-0x0000000000791000-memory.dmp
memory/4388-71-0x0000000000400000-0x0000000000791000-memory.dmp
memory/4388-70-0x0000000000400000-0x000000000047F000-memory.dmp
memory/4388-65-0x0000000000400000-0x0000000000791000-memory.dmp