Analysis
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max time kernel
150s -
max time network
136s -
platform
windows10-2004_x64 -
resource
win10v2004-20230621-en -
resource tags
arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system -
submitted
26-06-2023 03:28
Behavioral task
behavioral1
Sample
c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f.xls
Resource
win7-20230621-en
Behavioral task
behavioral2
Sample
c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f.xls
Resource
win10v2004-20230621-en
General
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Target
c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f.xls
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Size
124KB
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MD5
a5dd8d199b2fab12f9a8b5dc01bc960a
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SHA1
e033a2462b83278d17cfe23e9dc3a9c90e7b9f8e
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SHA256
c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f
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SHA512
93a3e25a9209ff5a3e23b9d3ee36d987482c17093b8e1971d48305820df503b34d502fd6a958a8603a67082112a7d6a4698f397b70931bd54fe6c439e602a588
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SSDEEP
3072:8Kpb8rGYrMPe3q7Q0XV5xtezEsi8ZM+3UBjyqgF2ikieW2DXewVZawQ:8Kpb8rGYrMPe3q7Q0XV5xtuEsi8ZM++U
Malware Config
Extracted
http://digitaldays.ro/site/brandupi.php
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1088 5024 rundll32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 5024 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 5024 EXCEL.EXE 5024 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE 5024 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 5024 wrote to memory of 1088 5024 EXCEL.EXE rundll32.exe PID 5024 wrote to memory of 1088 5024 EXCEL.EXE rundll32.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\c90860cbcc78e518dfc11584eb096b7d31eb488f43d5c082b816da54cddfae0f.xls"1⤵
- 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
PID:5024 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\svh.osts,DllRegisterServer12⤵
- Process spawned unexpected child process
PID:1088
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/5024-133-0x00007FFF09290000-0x00007FFF092A0000-memory.dmpFilesize
64KB
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memory/5024-135-0x00007FFF09290000-0x00007FFF092A0000-memory.dmpFilesize
64KB
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memory/5024-134-0x00007FFF09290000-0x00007FFF092A0000-memory.dmpFilesize
64KB
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memory/5024-136-0x00007FFF09290000-0x00007FFF092A0000-memory.dmpFilesize
64KB
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memory/5024-137-0x00007FFF09290000-0x00007FFF092A0000-memory.dmpFilesize
64KB
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memory/5024-138-0x00007FFF069D0000-0x00007FFF069E0000-memory.dmpFilesize
64KB
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memory/5024-139-0x00007FFF069D0000-0x00007FFF069E0000-memory.dmpFilesize
64KB