Analysis
- max time kernel
141s - max time network
127s - platform
windows11-21h2_x64 - resource
win11-20240508-en - resource tags
- submitted
23/06/2024, 21:34
General
- Target ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.exe
- Size 5.4MB
- Sample240623-1e5vvsshka
- SHA256 ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20
Malware Config
Extracted
-
socks5systemz
-
bvtidob.com
-
http://bvtidob.com/search/?q=67e28dd8380ffb281106fa1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978fe71ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff610c7e7909f3a
-
http://bvtidob.com/search/?q=67e28dd8380ffb281106fa1d7c27d78406abdd88be4b12eab517aa5c96bd86ec9d854d895a8bbc896c58e713bc90c91936b5281fc235a925ed3e5dd6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c9b3cc56a9317
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\ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.exe"C:\Users\Admin\AppData\Local\Temp\ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-GH2OO.tmp\ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.tmp"C:\Users\Admin\AppData\Local\Temp\is-GH2OO.tmp\ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.tmp" /SL5="$40232,5404451,54272,C:\Users\Admin\AppData\Local\Temp\ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe"C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe"C:\Users\Admin\AppData\Local\Free Sound Recorder\soundrecorder32_64.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
soundrecorder32_64.exe
ef7bb8f96b97392ee285a9116f01456266a3a49d79b8489ad83455c3b4ff1f20.tmp
_iscrypt.dll
_isdecmp.dll
memory/2028-75-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2028-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/2028-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4652-104-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-110-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-125-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-122-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-72-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-74-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-118-0x0000000000AE0000-0x0000000000B82000-memory.dmp
memory/4652-117-0x0000000000AE0000-0x0000000000B82000-memory.dmp
memory/4652-77-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-80-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-81-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-84-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-87-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-90-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-91-0x0000000000AE0000-0x0000000000B82000-memory.dmp
memory/4652-96-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-101-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-116-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-107-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/4652-113-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/5080-15-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/5080-76-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/5088-66-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/5088-65-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/5088-70-0x0000000000400000-0x00000000006D4000-memory.dmp
memory/5088-69-0x0000000000400000-0x00000000006D4000-memory.dmp