Analysis
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max time kernel
92s -
max time network
56s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
04-03-2021 18:53
Behavioral task
behavioral1
Sample
GFT_822286282_687395985.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
GFT_822286282_687395985.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
GFT_822286282_687395985.xls
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Size
188KB
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MD5
999288814f2399e599e458fdba0fa334
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SHA1
3b7872616a33fcabdfe1655144bd130c5f2963cc
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SHA256
bab6b7f6a10c835f8e38bde21d9420bbab615be6563a15404323033dc386fea3
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SHA512
fde60138e35368cc846bb5cf0e1bd6323d63b5a81d773618d88c39dfe9683b30614d5464141955c60d1deeafc0cf6eb0cf0e24c8eaff3898acea35de710fa254
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://davidachim.com/wpold/document.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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1484 1044 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 (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 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 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 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 (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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1044 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1044 EXCEL.EXE 1044 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1044 EXCEL.EXE 1044 EXCEL.EXE 1044 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1044 wrote to memory of 1484 1044 EXCEL.EXE rundll32.exe PID 1044 wrote to memory of 1484 1044 EXCEL.EXE rundll32.exe PID 1044 wrote to memory of 1484 1044 EXCEL.EXE rundll32.exe PID 1044 wrote to memory of 1484 1044 EXCEL.EXE rundll32.exe PID 1044 wrote to memory of 1484 1044 EXCEL.EXE rundll32.exe PID 1044 wrote to memory of 1484 1044 EXCEL.EXE rundll32.exe PID 1044 wrote to memory of 1484 1044 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\GFT_822286282_687395985.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32 ..\Frost.bitte,DllRegisterServer12⤵
- 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/1044-2-0x000000002FE61000-0x000000002FE64000-memory.dmpFilesize
12KB
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memory/1044-3-0x0000000071051000-0x0000000071053000-memory.dmpFilesize
8KB
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memory/1044-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1484-6-0x0000000000000000-mapping.dmp
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memory/1484-7-0x00000000760A1000-0x00000000760A3000-memory.dmpFilesize
8KB
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memory/1980-5-0x000007FEF77C0000-0x000007FEF7A3A000-memory.dmpFilesize
2.5MB