Analysis
- max time kernel
142s - max time network
129s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
13/06/2024, 04:16
General
- Target 653fef3d5a01ff6c6d2730be37faf50b.exe
- Size 4.8MB
- Sample240613-evspkstfna
- SHA256 a10926a22bdb4ab1419c00e04b266d001c60752df6b7d320380c6bbe284571e5
Malware Config
Extracted
-
socks5systemz
-
ayipbru.ru
-
http://ayipbru.ru/search/?q=67e28dd83954f07a4008f8497c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978ff71ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff713c5ed979939
-
http://ayipbru.ru/search/?q=67e28dd83954f07a4008f8497c27d78406abdd88be4b12eab517aa5c96bd86e895834c845a8bbc896c58e713bc90c91f36b5281fc235a925ed3e5cd6bd974a95129070b616e96cc92be510b866db52b2e34aec4c2b14a82966836f23d7f210c7ee9d983ecf6d9514
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\653fef3d5a01ff6c6d2730be37faf50b.exe"C:\Users\Admin\AppData\Local\Temp\653fef3d5a01ff6c6d2730be37faf50b.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-13I98.tmp\653fef3d5a01ff6c6d2730be37faf50b.tmp"C:\Users\Admin\AppData\Local\Temp\is-13I98.tmp\653fef3d5a01ff6c6d2730be37faf50b.tmp" /SL5="$C006A,4803412,54272,C:\Users\Admin\AppData\Local\Temp\653fef3d5a01ff6c6d2730be37faf50b.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\audioconverter.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
audioconverter.exe
653fef3d5a01ff6c6d2730be37faf50b.tmp
_iscrypt.dll
memory/1032-59-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/1032-60-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/1032-64-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/1672-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1672-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1672-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2160-78-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-103-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-69-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-72-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-75-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-115-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-81-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-84-0x0000000000870000-0x0000000000912000-memory.dmp
memory/2160-86-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-91-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-94-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-97-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-100-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-112-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-106-0x0000000000400000-0x00000000006EA000-memory.dmp
memory/2160-107-0x0000000000870000-0x0000000000912000-memory.dmp
memory/2160-108-0x0000000000870000-0x0000000000912000-memory.dmp
memory/4772-68-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4772-13-0x0000000000400000-0x00000000004BA000-memory.dmp