Analysis
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max time kernel
149s -
max time network
155s -
platform
windows7_x64 -
resource
win7v20210408 -
submitted
13-05-2021 12:58
Static task
static1
Behavioral task
behavioral1
Sample
catalog-241005140.xls
Resource
win7v20210408
Behavioral task
behavioral2
Sample
catalog-241005140.xls
Resource
win10v20210408
General
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Target
catalog-241005140.xls
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Size
367KB
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MD5
688ad6783056fd0380200879beb0e915
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SHA1
f3b9a70aac8dabbd46fa22d2f95d96faa911fec8
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SHA256
589255722398bef81da16a4b9e34e7d3b23666ba55ecd6bc90885d58fc63f2c4
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SHA512
3712c554d1d234bfa2a98600c565975a46a7b32b9f9a4270c96f5e15836834334db4f9cfee04e4c707129957559bdd6d74bb82ab5ab6a5c5171fda64c2e1e6f1
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 1636 1928 rundll32.exe EXCEL.EXE Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process 1920 1928 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-1-5-21-2455352368-1077083310-2879168483-1000\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\Se&nd to OneNote 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\MenuExt\E&xport to Microsoft Excel EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar EXCEL.EXE Key created \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt 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 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 1928 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
EXCEL.EXEpid process 1928 EXCEL.EXE 1928 EXCEL.EXE 1928 EXCEL.EXE -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1636 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 EXCEL.EXE rundll32.exe PID 1928 wrote to memory of 1920 1928 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-241005140.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/1636-63-0x0000000000000000-mapping.dmp
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memory/1636-64-0x0000000076691000-0x0000000076693000-memory.dmpFilesize
8KB
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memory/1920-65-0x0000000000000000-mapping.dmp
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memory/1928-60-0x000000002F881000-0x000000002F884000-memory.dmpFilesize
12KB
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memory/1928-61-0x00000000716C1000-0x00000000716C3000-memory.dmpFilesize
8KB
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memory/1928-62-0x000000005FFF0000-0x0000000060000000-memory.dmpFilesize
64KB