Analysis
- max time kernel
141s - max time network
128s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
23/06/2024, 10:04
General
- Target d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.exe
- Size 5.6MB
- Sample240623-l39rdssarr
- SHA256 d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2
Malware Config
Extracted
-
socks5systemz
-
erxjopq.ua
-
http://erxjopq.ua/search/?q=67e28dd83f0fa67d125ca51e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa1de8889b5e4fa9281ae978f371ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff610c3e8949e38
-
http://erxjopq.ua/search/?q=67e28dd83f0fa67d125ca51e7c27d78406abdd88be4b12eab517aa5c96bd86ee948f4b805a8bbc896c58e713bc90c94836b5281fc235a925ed3e50d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee9c9b38ca6e9215
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\d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.exe"C:\Users\Admin\AppData\Local\Temp\d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-OTTS6.tmp\d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.tmp"C:\Users\Admin\AppData\Local\Temp\is-OTTS6.tmp\d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.tmp" /SL5="$9016E,5567554,54272,C:\Users\Admin\AppData\Local\Temp\d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe"C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe"C:\Users\Admin\AppData\Local\Free Sound Recorder\freesoundrecorder.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
freesoundrecorder.exe
_iscrypt.dll
_isdecmp.dll
d77e1cc76dc6ac5e5148e3dd90638b4ab432080dba075d0cd0314df31e01fac2.tmp
memory/856-13-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/856-75-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/1976-3-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1976-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1976-74-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3796-65-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/3796-66-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/3796-69-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/3796-70-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-80-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-100-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-79-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-73-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-83-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-86-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-89-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-90-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/4840-95-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-76-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-103-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-106-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-109-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-112-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-115-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-116-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/4840-117-0x00000000009B0000-0x0000000000A52000-memory.dmp
memory/4840-121-0x0000000000400000-0x00000000006B0000-memory.dmp
memory/4840-124-0x0000000000400000-0x00000000006B0000-memory.dmp