Analysis
- max time kernel
138s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-en-20220113 - submitted
19/01/2022, 23:05
General
- Target 16f919cf7e6b8e005ce5d4bbe968c9c5.xll
- Size 1.7MB
- Sample220119-22wfdadhck
- SHA256 79cd208d8f4f4720ac7f85e0c3dabc8715dde7ce28e114d1bfd7372f30c10460
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 AdjustPrivilegeToken 3 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\16f919cf7e6b8e005ce5d4bbe968c9c5.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\JavaObjectReflectE.dll , dopt2⤵
- Process spawned unexpected child process
- Loads dropped DLL
-
-
C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalService1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2980-134-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-137-0x00007FFBAC840000-0x00007FFBAC850000-memory.dmp
memory/2980-138-0x00007FFBAC840000-0x00007FFBAC850000-memory.dmp
memory/2980-130-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-133-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-131-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-132-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-174-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-175-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-176-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/2980-177-0x00007FFBAEAF0000-0x00007FFBAEB00000-memory.dmp
memory/3276-152-0x0000000180000000-0x000000018003C000-memory.dmp