Analysis
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max time kernel
148s -
max time network
121s -
platform
windows7_x64 -
resource
win7v20210410 -
submitted
13-05-2021 12:58
Static task
static1
Behavioral task
behavioral1
Sample
catalog-274433653.xls
Resource
win7v20210410
Behavioral task
behavioral2
Sample
catalog-274433653.xls
Resource
win10v20210408
General
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Target
catalog-274433653.xls
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Size
367KB
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MD5
7311727df7529a293920042610dafa44
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SHA1
46f47db43251e6e88a619c0ec08daed44e18d13c
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SHA256
a2b9ede8864b03fbefae06fcbfc6f5bb6a780f98833c6abb3afb564a60b6bbc5
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SHA512
5aef6d621fb68b081d070f0e90b1c24260bf833115d2aaf173c0a2125269219aad9d0c660b834700c5c52ea25bc244ed5c60358d334b6729ac680a83caed55ac
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 1332 1088 rundll32.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 876 1088 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 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 (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 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 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 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1088 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1088 EXCEL.EXE 1088 EXCEL.EXE 1088 EXCEL.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 1332 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 EXCEL.EXE rundll32.exe PID 1088 wrote to memory of 876 1088 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-274433653.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/876-65-0x0000000000000000-mapping.dmp
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memory/1088-60-0x000000002F0F1000-0x000000002F0F4000-memory.dmpFilesize
12KB
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memory/1088-61-0x0000000070EB1000-0x0000000070EB3000-memory.dmpFilesize
8KB
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memory/1088-62-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB
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memory/1332-63-0x0000000000000000-mapping.dmp
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memory/1332-64-0x0000000075281000-0x0000000075283000-memory.dmpFilesize
8KB