Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
25/03/2024, 01:01
General
- Target 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe
- Size 2.0MB
- Sample240325-bdb4qabf98
- SHA256 41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60
Malware Config
Extracted
-
socks5systemz
-
http://bxdbmob.com/search/?q=67e28dd86c09f220490efa1c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978fe71ea771795af8e05c642db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ffe12c2e7909e39
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 WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp"C:\Users\Admin\AppData\Local\Temp\is-8K0T7.tmp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp" /SL5="$401CC,1711334,54272,C:\Users\Admin\AppData\Local\Temp\41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe"C:\Users\Admin\AppData\Local\MarkDownPad\markdownpad32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
markdownpad32.exe
markdownpad32.exe
_iscrypt.dll
_isdecmp.dll
41105bfdb5af989cd5d636fcb77ef49f97d25d525aa2bdc35d95e1b0a46e8b60.tmp
memory/212-43-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/212-44-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/212-45-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/212-48-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/1964-55-0x0000000000660000-0x0000000000661000-memory.dmp
memory/1964-6-0x0000000000660000-0x0000000000661000-memory.dmp
memory/1964-53-0x0000000000400000-0x00000000004B8000-memory.dmp
memory/4064-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4064-52-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4476-58-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-74-0x00000000007E0000-0x0000000000882000-memory.dmp
memory/4476-51-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-59-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-62-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-65-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-68-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-70-0x00000000007E0000-0x0000000000882000-memory.dmp
memory/4476-73-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-54-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-79-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-82-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-83-0x00000000007E0000-0x0000000000882000-memory.dmp
memory/4476-86-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-89-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-92-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-95-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-99-0x0000000000400000-0x00000000005D5000-memory.dmp
memory/4476-102-0x0000000000400000-0x00000000005D5000-memory.dmp