Analysis
- max time kernel
283s - max time network
264s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
19/01/2022, 22:16
General
- Target new_working_conditions[2022.01.19_17-49].xll
- Size 1.7MB
- Sample220119-161efsdfck
- SHA256 29c231e5e6559618d30532ef0b4585fda85b9b367aa81a5d91aba1932ae68658
Score
10/10
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 1 IoCs
- Blocklisted process makes network request 4 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 FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 9 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\new_working_conditions[2022.01.19_17-49].xll"1⤵
- Loads dropped DLL
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\rundll32.exerundll32 C:\Users\Admin\JavaResponsiveY.dll , dopt2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Loads dropped DLL
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/1880-252-0x0000000180000000-0x000000018003C000-memory.dmp
memory/2504-115-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp
memory/2504-116-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp
memory/2504-117-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp
memory/2504-118-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp
memory/2504-121-0x00007FFE79D20000-0x00007FFE79D30000-memory.dmp
memory/2504-128-0x00007FFE76C00000-0x00007FFE76C10000-memory.dmp
memory/2504-129-0x00007FFE76C00000-0x00007FFE76C10000-memory.dmp