Analysis
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max time kernel
69s -
max time network
10s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
12-03-2021 20:55
Behavioral task
behavioral1
Sample
document-1653381419.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1653381419.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
document-1653381419.xls
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Size
138KB
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MD5
0d827c9386c0d1069ebb7e6e6bcd8a12
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SHA1
65dffaf4ba296a44df6eee7f3eb468a44eb703c7
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SHA256
96aecefbaff73f1c7c607a4a268607311eb3aa4296dc7ec0057d7107fe2b541c
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SHA512
249440d08771637fa6907d51fdf7472f0fba050803f5c17ea5785f8acde79d98ac999b0f66ec3caa561c3e49e7ddb4424b2882c4734f9f9c378d3ccad229e3f7
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://nvelj12qyyfi03kqxy.xyz/i.gif
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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1016 1724 rundll32.exe EXCEL.EXE -
Enumerates system info in registry 2 TTPs 1 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
Processes:
EXCEL.EXEdescription ioc process Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1724 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1724 EXCEL.EXE 1724 EXCEL.EXE 1724 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe PID 1724 wrote to memory of 1016 1724 EXCEL.EXE rundll32.exe
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\document-1653381419.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1724 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1016
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/1016-6-0x0000000000000000-mapping.dmp
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memory/1016-7-0x00000000761E1000-0x00000000761E3000-memory.dmpFilesize
8KB
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memory/1724-2-0x000000002F8A1000-0x000000002F8A4000-memory.dmpFilesize
12KB
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memory/1724-3-0x0000000071C61000-0x0000000071C63000-memory.dmpFilesize
8KB
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memory/1724-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1960-5-0x000007FEF7D90000-0x000007FEF800A000-memory.dmpFilesize
2.5MB