Analysis
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max time kernel
149s -
max time network
59s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
13-05-2021 12:55
Static task
static1
Behavioral task
behavioral1
Sample
catalog-2023423371.xls
Resource
win7v20210408
Behavioral task
behavioral2
Sample
catalog-2023423371.xls
Resource
win10v20210410
General
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Target
catalog-2023423371.xls
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Size
367KB
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MD5
df2cb9f16e1832b5e61c8f3ba7ecaa70
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SHA1
d41265b00f763726e91752c22c376b6012e85c24
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SHA256
7a10b84f68f7a94cb119a487bf40292af08d2d137ba5317dede9055459982308
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SHA512
c82cc8b75b3a8f38aac71aa05cf57b85c60f1042e418cca70a0d9837241edf93b231463e88a5b548c477e53a9095dc18f5adff7ba7aad7b9b5fd5bafe188cf97
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 1576 1956 rundll32.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1640 1956 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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Set value (str) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1" EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote EXCEL.EXE Set value (int) \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55" EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1956 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1956 EXCEL.EXE 1956 EXCEL.EXE 1956 EXCEL.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1576 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 EXCEL.EXE rundll32.exe PID 1956 wrote to memory of 1640 1956 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-2023423371.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/1576-62-0x0000000000000000-mapping.dmp
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memory/1576-63-0x0000000075DA1000-0x0000000075DA3000-memory.dmpFilesize
8KB
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memory/1640-64-0x0000000000000000-mapping.dmp
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memory/1956-59-0x000000002FE21000-0x000000002FE24000-memory.dmpFilesize
12KB
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memory/1956-60-0x0000000071AB1000-0x0000000071AB3000-memory.dmpFilesize
8KB
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memory/1956-61-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB