Analysis
- max time kernel
141s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
- submitted
30/03/2024, 20:06
General
- Target e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.exe
- Size 1.9MB
- Sample240330-yvkhraeb68
- SHA256 e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7
Malware Config
Extracted
-
socks5systemz
-
http://erdnpii.ua/search/?q=67e28dd86a5ca17c4108f81b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f571ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe19c2e6979e33
-
http://erdnpii.ua/search/?q=67e28dd86a5ca17c4108f81b7c27d78406abdd88be4b12eab517aa5c96bd86e8938444895a8bbc896c58e713bc90c91836b5281fc235a925ed3e56d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee949239c46d921e
Signatures
- Detect Socks5Systemz Payload 5 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 WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.exe"C:\Users\Admin\AppData\Local\Temp\e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-JS10P.tmp\e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.tmp"C:\Users\Admin\AppData\Local\Temp\is-JS10P.tmp\e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.tmp" /SL5="$B0056,1625110,54272,C:\Users\Admin\AppData\Local\Temp\e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe"C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe"C:\Users\Admin\AppData\Local\Audio Converter Lib\audioconverterlib.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
audioconverterlib.exe
_iscrypt.dll
e77aa89b8d0a892ee05ac3e09138782d8252d0ae7683e6dca2bf2b14a4a393e7.tmp
memory/1292-77-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-78-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/1292-99-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-96-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-92-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/1292-91-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/1292-90-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-46-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-87-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-84-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-49-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-81-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-51-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-54-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-57-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-63-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-67-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-65-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/1292-60-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1292-69-0x00000000008C0000-0x0000000000962000-memory.dmp
memory/1292-74-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/2300-7-0x0000000000860000-0x0000000000861000-memory.dmp
memory/2300-50-0x0000000000860000-0x0000000000861000-memory.dmp
memory/2300-48-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/3880-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3880-47-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3880-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3988-43-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/3988-41-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/3988-39-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/3988-38-0x0000000000400000-0x00000000005D5000-memory.dmp