Analysis
- max time kernel
155s - max time network
159s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
19/01/2022, 16:13
General
- Target 85f6edaa9fcf9646a82acef0fdf9873c.xll
- Size 1.7MB
- Sample220119-tn3zasbdg2
- SHA256 b31cdc9d1f82f0e85faedf8a95cddcfb94ea68db5c9a496a4365db19b7272380
Malware Config
Extracted
-
xlm4.0
Signatures
- Bazar Loader
Detected loader normally used to deploy BazarBackdoor malware.
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Bazar/Team9 Loader payload 1 IoCs
- Blocklisted process makes network request 1 IoCs
- Loads dropped DLL 3 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 SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 2 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\85f6edaa9fcf9646a82acef0fdf9873c.xll"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaObjectReflectQ.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/632-137-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-140-0x00007FFF29F50000-0x00007FFF29F60000-memory.dmp
memory/632-141-0x00007FFF29F50000-0x00007FFF29F60000-memory.dmp
memory/632-133-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-136-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-135-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-134-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-177-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-178-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-179-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/632-180-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
memory/2940-157-0x0000000180000000-0x000000018003C000-memory.dmp