Analysis
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max time kernel
148s -
max time network
119s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
13-05-2021 12:58
Static task
static1
Behavioral task
behavioral1
Sample
catalog-27665490.xls
Resource
win7v20210410
Behavioral task
behavioral2
Sample
catalog-27665490.xls
Resource
win10v20210408
General
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Target
catalog-27665490.xls
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Size
367KB
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MD5
7fb342c371716de63e29a80032e0ba44
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SHA1
9d5297495c5b217ecfebd5eb92cae9f060559662
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SHA256
d0660c3c933c0438bc9f9be8694112845fa14b2b28c759fa47dab1e712827013
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SHA512
e5828669d601075e3559ceb770d28410a71e4a450cff7756c20e9bf1175cfe80711861615402f9c47bbcba7d06347a1d58b386ab86971e2f51ef1c6bb529a376
Malware Config
Extracted
https://smartpalakatva.com/edQsUZOLlE/th.html
https://pilstlcommodities.com/Ov4FlB3lpy/th.html
Signatures
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Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exerundll32.exedescription pid pid_target process target process Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 584 1104 rundll32.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1904 1104 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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1104 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1104 EXCEL.EXE 1104 EXCEL.EXE 1104 EXCEL.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 584 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 EXCEL.EXE rundll32.exe PID 1104 wrote to memory of 1904 1104 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\catalog-27665490.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 ..\tuti.rut,DllRegisterServer2⤵
- Process spawned unexpected child process
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C:\Windows\SysWOW64\rundll32.exerundll32 ..\tuti.rut1,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/584-63-0x0000000000000000-mapping.dmp
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memory/584-64-0x0000000076E11000-0x0000000076E13000-memory.dmpFilesize
8KB
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memory/1104-60-0x000000002FB61000-0x000000002FB64000-memory.dmpFilesize
12KB
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memory/1104-61-0x0000000071D01000-0x0000000071D03000-memory.dmpFilesize
8KB
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memory/1104-62-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1904-65-0x0000000000000000-mapping.dmp