Analysis
- max time kernel
123s - max time network
135s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
18/01/2022, 23:49
General
- Target 3ac316aac73c0740b4991a78b88832bf.xll
- Size 1.7MB
- Sample220118-3t17bseac7
- SHA256 a2e85069fc46ebd9d42f5032342656337b40583c3f94f82f653e17dd5bae7f5f
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
- 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\3ac316aac73c0740b4991a78b88832bf.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\JavaObjectReflectJ.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2504-135-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-138-0x00007FFBAC840000-0x00007FFBAC850000-memory.dmp
memory/2504-139-0x00007FFBAC840000-0x00007FFBAC850000-memory.dmp
memory/2504-131-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-134-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-133-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-132-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-175-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-176-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-177-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2504-178-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/4032-155-0x0000000180000000-0x000000018003C000-memory.dmp