Analysis
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max time kernel
75s -
max time network
28s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
12-03-2021 19:52
Behavioral task
behavioral1
Sample
document-1922515199.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1922515199.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
document-1922515199.xls
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Size
138KB
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MD5
440830e3be371c53dbbe571736b105e3
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SHA1
3d63c4e83ded0a6240f9270878513586aebe39e3
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SHA256
497a4b4da11c775051944cf50abfb5d0af842b229a792a4167663d0bbdee25a5
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SHA512
41a8f887284ee3954e6e97b43b325671b26fc4cfe5c28eec150ddb3848a51bd742bf7bde02be1a5b875e2a5d971bbba5c92e91ad0757dc78e0800c0d80e59782
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://bqx12lnjk03rrdio.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 548 1832 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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1832 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1832 EXCEL.EXE 1832 EXCEL.EXE 1832 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1832 wrote to memory of 548 1832 EXCEL.EXE rundll32.exe PID 1832 wrote to memory of 548 1832 EXCEL.EXE rundll32.exe PID 1832 wrote to memory of 548 1832 EXCEL.EXE rundll32.exe PID 1832 wrote to memory of 548 1832 EXCEL.EXE rundll32.exe PID 1832 wrote to memory of 548 1832 EXCEL.EXE rundll32.exe PID 1832 wrote to memory of 548 1832 EXCEL.EXE rundll32.exe PID 1832 wrote to memory of 548 1832 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-1922515199.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1832 -
C:\Windows\SysWOW64\rundll32.exerundll32 ..\zfbfg.ere,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:548
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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memory/332-5-0x000007FEF7F80000-0x000007FEF81FA000-memory.dmpFilesize
2.5MB
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memory/548-6-0x0000000000000000-mapping.dmp
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memory/548-7-0x0000000076191000-0x0000000076193000-memory.dmpFilesize
8KB
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memory/1832-2-0x000000002F601000-0x000000002F604000-memory.dmpFilesize
12KB
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memory/1832-3-0x0000000071811000-0x0000000071813000-memory.dmpFilesize
8KB
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memory/1832-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB