Analysis
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max time kernel
142s -
max time network
144s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
11-03-2021 12:32
Behavioral task
behavioral1
Sample
sample.xls
Resource
win7v20201028
Behavioral task
behavioral2
Sample
sample.xls
Resource
win10v20201028
General
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Target
sample.xls
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Size
276KB
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MD5
5cd0bfc13e54454404bdea0a16d5fbba
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SHA1
c191aeed68de9ebcbd8cf14aa4d6465e305e6603
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SHA256
d54fa3d2b17706fe6e4c1159c04ff2bbc4f2403de5855f73a038ed8335e7e3f2
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SHA512
cee9509a75a51f740ad087b4af2116b2644999aabbbea2281efc90ec298786f66ba4a211c3a83b6e0a7a6d6c3fcfa51e146d3fc19683c5f302fc52c132fe014d
Malware Config
Signatures
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Process spawned unexpected child process 5 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
rundll32.exerundll32.exerundll32.exerundll32.exerundll32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2336 540 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2440 540 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 760 540 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2660 540 rundll32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1816 540 rundll32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 540 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE 540 EXCEL.EXE -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 540 wrote to memory of 2336 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 2336 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 2440 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 2440 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 760 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 760 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 2660 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 2660 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 1816 540 EXCEL.EXE rundll32.exe PID 540 wrote to memory of 1816 540 EXCEL.EXE rundll32.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\sample.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:540 -
C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:2336
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok1,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:2440
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok2,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:760
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok3,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:2660
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C:\Windows\SYSTEM32\rundll32.exerundll32 ..\Runtime.brok4,DllRegisterServer2⤵
- Process spawned unexpected child process
PID:1816
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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MD5
153665460fe2578e8dc4e36ef7077d80
SHA140a90b6f98c358bdbdd6e5842c186d919cdde7e3
SHA2563ad4b3ff863a1ff41ea1e6ebb34f374a8d54804ec27b5531d05e579374bd602b
SHA51231abced5777e4c5dd3f155fbda068ab786a57e0d24cb535d41379c471011a6ac757f2ad4802c52249b3280065c4ce31e3a7f932637d8ee37adbccdab3a2bf2f8