Analysis
- max time kernel
150s - max time network
149s - platform
windows7_x64 - resource
win7v20201028 - submitted
13/11/2020, 16:56
Static task
static1
Behavioral task
behavioral1
Sample
document-1679883349.xlsb
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1679883349.xlsb
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
- Target document-1679883349.xlsb
- Size 291KB
- Sample201113-kalnv7w7ea
- SHA256 18ca7ac174cce132507f3f21809f0ed5605c87600ced82b9b5c74125f628a22e
- MD5 dff9ea0f562c6671d489ab9fa4dd2ba9
- SHA1 d479a9eafb43dc1188605719e644492385cb3a64
- SHA512 8b9302ea6a25dd4a453de4692b43dc944ef6b277f0d7463d759daaa4f0b2f422011ba84dca1571ead441ce4c5c827ef8a260c62c2cf7f8de61d8bc61f3428061
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://we11wdsgd.com/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 1 IoCs
pid Process 1468 fwpxeohi.exe - Loads dropped DLL 3 IoCs
pid Process 2028 EXCEL.EXE 2028 EXCEL.EXE 1468 fwpxeohi.exe - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fwpxeohi.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fwpxeohi.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fwpxeohi.exe - Enumerates system info in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE -
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar 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 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 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 - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2028 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 542 IoCs
pid Process 1468 fwpxeohi.exe 1468 fwpxeohi.exe 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 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Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1468 fwpxeohi.exe - Suspicious use of FindShellTrayWindow 4 IoCs
pid Process 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found - Suspicious use of SendNotifyMessage 4 IoCs
pid Process 1268 Process not Found 1268 Process not Found 1268 Process not Found 1268 Process not Found - Suspicious use of SetWindowsHookEx 5 IoCs
pid Process 2028 EXCEL.EXE 2028 EXCEL.EXE 2028 EXCEL.EXE 2028 EXCEL.EXE 2028 EXCEL.EXE - Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2028 wrote to memory of 1468 2028 EXCEL.EXE 31 PID 2028 wrote to memory of 1468 2028 EXCEL.EXE 31 PID 2028 wrote to memory of 1468 2028 EXCEL.EXE 31 PID 2028 wrote to memory of 1468 2028 EXCEL.EXE 31
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-1679883349.xlsb1⤵
- Loads dropped DLL
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2028 -
C:\giogti\mpopqr\fwpxeohi.exe"C:\giogti\mpopqr\fwpxeohi.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1468
-