Analysis
- max time kernel
146s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
07/03/2024, 19:56
General
- Target 8547adaf86a7ab657c3ae9f8fe0835fe.exe
- Size 1.8MB
- Sample240307-ynna3acd99
- SHA256 55d05fd5a19e6c9163da28136e8f06f9be8654ef3099af24faa8eeb5345068e9
Malware Config
Extracted
-
socks5systemz
-
http://buzaiez.com/search/?q=67e28dd8655aa729110daa1b7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a771ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ef619c4ee919933
Signatures
- Detect Socks5Systemz Payload 6 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.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\8547adaf86a7ab657c3ae9f8fe0835fe.exe"C:\Users\Admin\AppData\Local\Temp\8547adaf86a7ab657c3ae9f8fe0835fe.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-7PP63.tmp\8547adaf86a7ab657c3ae9f8fe0835fe.tmp"C:\Users\Admin\AppData\Local\Temp\is-7PP63.tmp\8547adaf86a7ab657c3ae9f8fe0835fe.tmp" /SL5="$B01D0,1513159,56832,C:\Users\Admin\AppData\Local\Temp\8547adaf86a7ab657c3ae9f8fe0835fe.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe"C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe"C:\Users\Admin\AppData\Local\Cruise Mailer\cruisemailer.exe" -s3⤵
- Executes dropped EXE
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-
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3876 --field-trial-handle=2496,i,15897292497548307209,13920214570023230813,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
cruisemailer.exe
8547adaf86a7ab657c3ae9f8fe0835fe.tmp
_iscrypt.dll
memory/1624-7-0x0000000000660000-0x0000000000661000-memory.dmp
memory/1624-49-0x0000000000660000-0x0000000000661000-memory.dmp
memory/1624-47-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/2648-46-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2648-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2648-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3292-76-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-67-0x00000000008A0000-0x0000000000943000-memory.dmp
memory/3292-99-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-96-0x00000000008A0000-0x0000000000943000-memory.dmp
memory/3292-48-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-95-0x00000000008A0000-0x0000000000943000-memory.dmp
memory/3292-52-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-53-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-56-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-59-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-62-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-65-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-66-0x00000000008A0000-0x0000000000943000-memory.dmp
memory/3292-45-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-73-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-94-0x00000000008A0000-0x0000000000943000-memory.dmp
memory/3292-79-0x00000000008A0000-0x0000000000943000-memory.dmp
memory/3292-80-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-83-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-86-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-89-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3292-92-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3988-37-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3988-38-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3988-40-0x0000000000400000-0x00000000005A2000-memory.dmp
memory/3988-42-0x0000000000400000-0x00000000005A2000-memory.dmp