Analysis
- max time kernel
154s - max time network
162s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
26/01/2022, 18:29
General
- Target information[2022.01.26_15-59].xll
- Size 5.9MB
- Sample220126-w4x44agfbj
- SHA256 6e4021f7f0cc57e8063785df44aaaeaa80d47aaad6e668c81b4217c5fb080562
Malware Config
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 2 IoCs
- Blocklisted process makes network request 1 IoCs
- Loads dropped DLL 4 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\information[2022.01.26_15-59].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\ClangCompileZ.dll , vchuudsa2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
-
-
C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Users\Admin\ClangCompileZ.dll,vchuudsa {88603540-60F8-4FAB-8F35-C2F99F62F1AF}1⤵
- Loads dropped DLL
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2184-278-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-132-0x00007FFFB4270000-0x00007FFFB4280000-memory.dmp
memory/2184-122-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-121-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-120-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-119-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-118-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-131-0x00007FFFB4270000-0x00007FFFB4280000-memory.dmp
memory/2184-279-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-280-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/2184-281-0x00007FFFB7DE0000-0x00007FFFB7DF0000-memory.dmp
memory/3564-264-0x000001A786EC0000-0x000001A786EEA000-memory.dmp
memory/3640-266-0x000001D78C5A0000-0x000001D78C5CA000-memory.dmp