Analysis
- max time kernel
148s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system - submitted
17/04/2024, 08:09
Behavioral task
behavioral1
Sample
f556b8ce385fc52e5ab46da5238439bb_JaffaCakes118.xls
Resource
win7-20240221-en
12 signatures
150 seconds
General
- Target f556b8ce385fc52e5ab46da5238439bb_JaffaCakes118.xls
- Size 161KB
- Sample240417-j2gm4she55
- SHA256 14d0df467f121adf0e755600e9ff5142551b0ac4cfb8fa0356214d11567a9cc6
- MD5 f556b8ce385fc52e5ab46da5238439bb
- SHA1 fa44d7e1c39e2ab6fa76393e483e8f2d58615d43
- SHA512 da8b90ffd4b8b72acce06343be3befd901cf0fcb9fc39997d03e8731d22d2758aed5985a8692f74e50e7c02c1d82c344977727bc1f2a5ec7a769533743a8d642
- SSDEEP 3072:bW1gxv7yZmspH7+cclKisQ6NqTBun5ozIhd/2jcc0lbxOreVJtXwJ:i1gxv7yZmspH7+cclKisQ6NqTBun5ozQ
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4808 880 cmd.exe 83 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4800 880 cmd.exe 83 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4444 880 cmd.exe 83 -
resource yara_rule behavioral2/files/0x000a00000002340e-108.dat office_xlm_macros - Deletes itself 1 IoCs
pid Process 880 EXCEL.EXE - Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE - Enumerates system info in registry 2 TTPs 3 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE - NTFS ADS 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\Temp\B5A85E00\:Zone.Identifier:$DATA EXCEL.EXE - Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 880 EXCEL.EXE - Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 880 EXCEL.EXE 880 EXCEL.EXE - Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE 880 EXCEL.EXE - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 880 wrote to memory of 4444 880 EXCEL.EXE 90 PID 880 wrote to memory of 4444 880 EXCEL.EXE 90 PID 880 wrote to memory of 4800 880 EXCEL.EXE 91 PID 880 wrote to memory of 4800 880 EXCEL.EXE 91 PID 880 wrote to memory of 4808 880 EXCEL.EXE 92 PID 880 wrote to memory of 4808 880 EXCEL.EXE 92 PID 4444 wrote to memory of 1112 4444 cmd.exe 97 PID 4444 wrote to memory of 1112 4444 cmd.exe 97 - Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 1112 attrib.exe
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\f556b8ce385fc52e5ab46da5238439bb_JaffaCakes118.xls"1⤵
- Deletes itself
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:880 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4444 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:1112
-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:4800
-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:4808
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\f556b8ce385fc52e5ab46da5238439bb_JaffaCakes118.xls
- Size 185KB
- SHA256 585ac7d526ef89cf8ceb48596e0c8307ad5d6c33902eacc29f7e5ab568403ca6
- MD5 8c21dee96a6aa687c3eda8a7eca7a823
- SHA1 fe5dd459bdb25f9851d5962d148744bd383e392c
- SHA512 5323ddd8676f3e9816446ed438bc7c34e44ebcce821915789b70191c33a4b049ade545f14da26f4a852abe193c50179c629407657bb83f674c4124d6e1fa30c1
- SSDEEP 3072:54xEtjPOtioVjDGUU1qfDlaGGx+cL2QndIh1tOglgAQgDNRKE3JtXwl7Aj99Ct:6xEtjPOtioVjDGUU1qfDlavx+W2QndIK
- MD5 SHA1 SHA512 SSDEEP