Analysis
- max time kernel
151s - max time network
115s - platform
windows7_x64 - resource
win7v20201028 - submitted
13/11/2020, 16:55
Static task
static1
Behavioral task
behavioral1
Sample
document-1673694735.xlsb
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1673694735.xlsb
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
- Target document-1673694735.xlsb
- Size 291KB
- Sample201113-5hwevvc8s2
- SHA256 746c44bc9f41ad758408cc835ff690c326c5a5778d90af319cb73a4d7f2b5732
- MD5 ab498db36344f59c199947e3f339bea0
- SHA1 20bc376d66911bd380e597d9dd393ca590fab1bb
- SHA512 3bc0d21250f20e0ed501112b4b8940ea73a79fc4e86a008dbc6de52e5243bd013f51476301be78bf7569cca03c9c6c7c9699ad3d0aa823d38cb05fe174c233de
- 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 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\Toolbar 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 Key created \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel 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 - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 2028 EXCEL.EXE - Suspicious behavior: EnumeratesProcesses 518 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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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
-
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-1673694735.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
-