Analysis
- max time kernel
120s - max time network
145s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
25/03/2024, 11:04
General
- Target dddad3baf222908737a7f2ae85bc2e54.xlsm
- Size 25KB
- Sample240325-m6fs6adh56
- SHA256 c27c99ccf59a325357f8f4bf50fbe03e3c5b2a08633689c7876d266aebd67764
Malware Config
Extracted
-
xlm4.0
-
xlm40.dropper
https://eurobones.com.br/server.php
-
xlm40.dropper
https://tcommerceshop.com/server.php
Signatures
- Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Deletes itself 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 19 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\dddad3baf222908737a7f2ae85bc2e54.xlsm"1⤵
- Deletes itself
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\reg.exe"C:\Windows\system32\reg.exe" EXPORT HKCU\Software\Microsoft\Office\16.0\Excel\Security C:\Users\Public\Documents\RLqP7o0y.txt /y2⤵
- Process spawned unexpected child process
-
-
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Users\Public\Documents\RiLW4bv.txt,DllRegisterServer2⤵
- Process spawned unexpected child process
-
-
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=1380 --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
REG9645.tmp
memory/1988-15-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-70-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-4-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-0-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-14-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-5-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-7-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-8-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-9-0x00007FFF4EB10000-0x00007FFF4EB20000-memory.dmp
memory/1988-10-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-11-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-12-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-1-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-13-0x00007FFF4EB10000-0x00007FFF4EB20000-memory.dmp
memory/1988-6-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-17-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-18-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-16-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-19-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-3-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-46-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-67-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-68-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-2-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-69-0x00007FFF50C70000-0x00007FFF50C80000-memory.dmp
memory/1988-71-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-72-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp
memory/1988-73-0x00007FFF90BF0000-0x00007FFF90DE5000-memory.dmp