Analysis
- max time kernel
137s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-en-20220112 - submitted
19/01/2022, 00:00
General
- Target 1f291f709c4c0039d33fea2b4bcbcf66.xll
- Size 1.7MB
- Sample220119-aafr3aebcn
- SHA256 e397e69d94adae69848267c77b54d3599d27f95de11631020b1348b087fcab3b
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 2 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\1f291f709c4c0039d33fea2b4bcbcf66.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\JavaObjectReflectiveR.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/820-152-0x0000000180000000-0x000000018003C000-memory.dmp
memory/4048-134-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-138-0x00007FFC13980000-0x00007FFC13990000-memory.dmp
memory/4048-137-0x00007FFC13980000-0x00007FFC13990000-memory.dmp
memory/4048-130-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-133-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-132-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-131-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-174-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-175-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-176-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp
memory/4048-177-0x00007FFC15C50000-0x00007FFC15C60000-memory.dmp