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210216-w399b7h8en 10Analysis
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max time kernel
71s -
max time network
14s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
16-02-2021 16:29
Behavioral task
behavioral1
Sample
docs_ (35).xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
General
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Target
docs_ (35).xls
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Size
317KB
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MD5
08510e105da0cd70372df801da0d50d1
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SHA1
c14c05c17dfc2896e461c62e9dad7f81d1d48cdb
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SHA256
37ea0eaeed142c4a0d1d4e3b801a8cef3dc5f2cd69a5af4f59bd817362833020
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SHA512
5283efd05dd547ecaecd62236245533496fce006e7ea228a11efed7e56ae541d4c691f48b927bd1a390bb853acf5b95cc6a5aab1a3a4311f2ee292eec54ea747
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
https://skyflyfares.com/ds/1602.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 1164 1656 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 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 (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 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 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 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 Key created \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1656 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 7 IoCs
Processes:
EXCEL.EXEpid process 1656 EXCEL.EXE 1656 EXCEL.EXE 1656 EXCEL.EXE 1656 EXCEL.EXE 1656 EXCEL.EXE 1656 EXCEL.EXE 1656 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1656 wrote to memory of 1164 1656 EXCEL.EXE rundll32.exe PID 1656 wrote to memory of 1164 1656 EXCEL.EXE rundll32.exe PID 1656 wrote to memory of 1164 1656 EXCEL.EXE rundll32.exe PID 1656 wrote to memory of 1164 1656 EXCEL.EXE rundll32.exe PID 1656 wrote to memory of 1164 1656 EXCEL.EXE rundll32.exe PID 1656 wrote to memory of 1164 1656 EXCEL.EXE rundll32.exe PID 1656 wrote to memory of 1164 1656 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\docs_ (35).xls"1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32 ..\zdfb.zgz,DllRegisterServer2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1164-6-0x0000000000000000-mapping.dmp
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memory/1164-7-0x00000000765A1000-0x00000000765A3000-memory.dmpFilesize
8KB
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memory/1656-2-0x000000002FB31000-0x000000002FB34000-memory.dmpFilesize
12KB
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memory/1656-3-0x0000000071A81000-0x0000000071A83000-memory.dmpFilesize
8KB
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memory/1656-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1724-5-0x000007FEF7BD0000-0x000007FEF7E4A000-memory.dmpFilesize
2.5MB