Analysis
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max time kernel
69s -
max time network
11s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
12-03-2021 10:04
Behavioral task
behavioral1
Sample
document-1427996815.xls
Resource
win7v20201028
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1427996815.xls
Resource
win10v20201028
0 signatures
0 seconds
General
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Target
document-1427996815.xls
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Size
138KB
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MD5
1aa8b3abd339038569d7df4fd8e6dc99
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SHA1
7bed8cddc2d7a354618bd4839fec50047a84c9b1
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SHA256
09f89aadd7c1456cad78be98286b61277b3de6eecefb3169ee1953bcbcac13c2
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SHA512
3e65f15c53bbc1a5e487ed06e396123c79cda5e7903644d6f06d92791f44966d3601fad6e62828029ea559276d5614f5d404931b1814107cbba863c13bfdbeef
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://gcfxb12aefoyn03epdoji.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 908 1684 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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel 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 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 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1684 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1684 EXCEL.EXE 1684 EXCEL.EXE 1684 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1684 wrote to memory of 908 1684 EXCEL.EXE rundll32.exe PID 1684 wrote to memory of 908 1684 EXCEL.EXE rundll32.exe PID 1684 wrote to memory of 908 1684 EXCEL.EXE rundll32.exe PID 1684 wrote to memory of 908 1684 EXCEL.EXE rundll32.exe PID 1684 wrote to memory of 908 1684 EXCEL.EXE rundll32.exe PID 1684 wrote to memory of 908 1684 EXCEL.EXE rundll32.exe PID 1684 wrote to memory of 908 1684 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-1427996815.xls1⤵
- 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 ..\zfbfg.ere,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/908-6-0x0000000000000000-mapping.dmp
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memory/908-7-0x00000000756A1000-0x00000000756A3000-memory.dmpFilesize
8KB
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memory/1684-2-0x000000002F221000-0x000000002F224000-memory.dmpFilesize
12KB
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memory/1684-3-0x0000000071AC1000-0x0000000071AC3000-memory.dmpFilesize
8KB
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memory/1684-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1732-5-0x000007FEF68D0000-0x000007FEF6B4A000-memory.dmpFilesize
2.5MB