Analysis
- max time kernel
141s - max time network
128s - platform
windows11-21h2_x64 - resource
win11-20240426-en - resource tags
- submitted
09/06/2024, 13:20
General
- Target ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.exe
- Size 4.8MB
- Sample240609-qk2qaabf45
- SHA256 ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c
Malware Config
Extracted
-
socks5systemz
-
cetuzdt.net
-
http://cetuzdt.net/search/?q=67e28dd8655ba77a135ffe187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa48e8889b5e4fa9281ae978a571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff818c3e6979c3d
-
http://cetuzdt.net/search/?q=67e28dd8655ba77a135ffe187c27d78406abdd88be4b12eab517aa5c96bd86e8968248805a8bbc896c58e713bc90c91d36b5281fc235a925ed3e06d6bd974a95129070b616e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee929338c46d9010
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\ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.exe"C:\Users\Admin\AppData\Local\Temp\ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.exe"1⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\is-DL1LE.tmp\ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.tmp"C:\Users\Admin\AppData\Local\Temp\is-DL1LE.tmp\ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.tmp" /SL5="$501FA,4764116,54272,C:\Users\Admin\AppData\Local\Temp\ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe" -i3⤵
- Executes dropped EXE
-
-
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard32.exe" -s3⤵
- Executes dropped EXE
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
_iscrypt.dll
ee9c3dfa59620cfed3440c9da9d83e75c2f387775cad8a71b8c2cf142999088c.tmp
virtualsoundcard32.exe
memory/2188-59-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/2188-60-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/2188-63-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/2188-64-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/3352-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/3352-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3352-68-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3832-69-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/3832-16-0x0000000000400000-0x00000000004BA000-memory.dmp
memory/4756-72-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-94-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-67-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-74-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-77-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-80-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-83-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-84-0x0000000000AA0000-0x0000000000B42000-memory.dmp
memory/4756-89-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-70-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-97-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-100-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-103-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-106-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-109-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-111-0x0000000000AA0000-0x0000000000B42000-memory.dmp
memory/4756-110-0x0000000000AA0000-0x0000000000B42000-memory.dmp
memory/4756-115-0x0000000000400000-0x00000000006D7000-memory.dmp
memory/4756-118-0x0000000000400000-0x00000000006D7000-memory.dmp