Analysis
- max time kernel
142s - max time network
129s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
22/06/2024, 09:23
General
- Target 3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.exe
- Size 4.7MB
- Sample240622-lcg9fssend
- SHA256 3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6
Malware Config
Extracted
-
socks5systemz
-
ayioefb.ru
-
http://ayioefb.ru/search/?q=67e28dd83f0fa67d125ca51e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1de8889b5e4fa9281ae978f371ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff611c4e7979f38
-
http://ayioefb.ru/search/?q=67e28dd83f0fa67d125ca51e7c27d78406abdd88be4b12eab517aa5c96bd86ee948f4b805a8bbc896c58e713bc90c94836b5281fc235a925ed3e50d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c9a3fc56d9315
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\3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.exe"C:\Users\Admin\AppData\Local\Temp\3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-L86FU.tmp\3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.tmp"C:\Users\Admin\AppData\Local\Temp\is-L86FU.tmp\3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.tmp" /SL5="$5016C,4655996,54272,C:\Users\Admin\AppData\Local\Temp\3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor.exe"C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor.exe"C:\Users\Admin\AppData\Local\Free Audio Extractor\freeaudioextractor.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
freeaudioextractor.exe
_iscrypt.dll
3bfa6ca2b9f0271c0e484469305c5301b0ca2e63d70d2d99104cd114a31b84e6.tmp
memory/1524-70-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1524-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1524-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2064-59-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/2064-65-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/2064-60-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/2064-63-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4028-10-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4028-71-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4784-76-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-98-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-72-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-75-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-67-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-79-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-82-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-85-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-88-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/4784-89-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-95-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-69-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-99-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-102-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-105-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-108-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-111-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-112-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/4784-113-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/4784-117-0x0000000000400000-0x00000000006DF000-memory.dmp
memory/4784-120-0x0000000000400000-0x00000000006DF000-memory.dmp