Analysis
-
max time kernel
69s -
max time network
38s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
24-02-2021 19:33
Behavioral task
behavioral1
Sample
document-1251291620.xls
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
document-1251291620.xls
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
-
Target
document-1251291620.xls
-
Size
90KB
-
MD5
66c18bb0b9dde900222b78910d60610e
-
SHA1
57103a5bb0ac103d3a190992c70a8d80ab69570d
-
SHA256
543fea0b4bac507005bcbc272fe86ae535411c709db2ce8c4b71cceb7c8ea717
-
SHA512
fea9b2f83e887dcdf9695ac83ca0070c8b5ee0507a1d3080007ba7b9e7ecd79d5e597547930f490c9d652ec6b567e80a9345f5cfe703706f3a6a4ef3ab1ea55a
Score
10/10
Malware Config
Extracted
Language
xlm4.0
Source
URLs
xlm40.dropper
http://185.212.47.84/22.gif
Signatures
-
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 1460 1636 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 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 (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 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 (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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1636 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1636 EXCEL.EXE 1636 EXCEL.EXE 1636 EXCEL.EXE -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe PID 1636 wrote to memory of 1460 1636 EXCEL.EXE rundll32.exe
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-1251291620.xls1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32 ..\rieuro.vnt,DllRegisterServer2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/1460-6-0x0000000000000000-mapping.dmp
-
memory/1460-7-0x00000000761E1000-0x00000000761E3000-memory.dmpFilesize
8KB
-
memory/1636-2-0x000000002F761000-0x000000002F764000-memory.dmpFilesize
12KB
-
memory/1636-3-0x0000000071521000-0x0000000071523000-memory.dmpFilesize
8KB
-
memory/1636-4-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
-
memory/1920-5-0x000007FEF6380000-0x000007FEF65FA000-memory.dmpFilesize
2.5MB