Analysis
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max time kernel
148s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
11-11-2024 18:01
Behavioral task
behavioral1
Sample
9dc1aab677f374576c4ba1af99a0b475d021ba985e13dbf90953504e697c1dee.xls
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
9dc1aab677f374576c4ba1af99a0b475d021ba985e13dbf90953504e697c1dee.xls
Resource
win10v2004-20241007-en
General
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Target
9dc1aab677f374576c4ba1af99a0b475d021ba985e13dbf90953504e697c1dee.xls
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Size
70KB
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MD5
127af7776c32be1dc79e21a5bedd8416
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SHA1
53cfbbdab3a33711725f93dc222c44a30dc6ab85
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SHA256
9dc1aab677f374576c4ba1af99a0b475d021ba985e13dbf90953504e697c1dee
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SHA512
e9ae140d8b120545336a14ebfaa09811bb1e9b64acab9d3f906cfd7ec4481142190fb7e6bda502c4bd801fe1680ba21bfd736863ebbffd213428d29dda38dba2
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SSDEEP
1536:OhKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM+4+hDcnTLiQrRTZws8E1:uKpb8rGYrMPe3q7Q0XV5xtezE8vG8UMf
Malware Config
Extracted
https://natayakim.com/_hlam/Ob78p6SxMNonofG/
http://weplug.com/dom/LfdeV8H4Zy1yLFRV/
http://martinmichalek.com/_sub/G1QKwEYPbt/
Signatures
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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 4216 3604 regsvr32.exe 82 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3728 3604 regsvr32.exe 82 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4016 3604 regsvr32.exe 82 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
description 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
pid Process 3604 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 3604 EXCEL.EXE 3604 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE 3604 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 3604 wrote to memory of 4216 3604 EXCEL.EXE 89 PID 3604 wrote to memory of 4216 3604 EXCEL.EXE 89 PID 3604 wrote to memory of 3728 3604 EXCEL.EXE 90 PID 3604 wrote to memory of 3728 3604 EXCEL.EXE 90 PID 3604 wrote to memory of 4016 3604 EXCEL.EXE 91 PID 3604 wrote to memory of 4016 3604 EXCEL.EXE 91
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\9dc1aab677f374576c4ba1af99a0b475d021ba985e13dbf90953504e697c1dee.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3604 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa1.ocx2⤵
- Process spawned unexpected child process
PID:4216
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa2.ocx2⤵
- Process spawned unexpected child process
PID:3728
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa3.ocx2⤵
- Process spawned unexpected child process
PID:4016
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
Filesize1KB
MD5acb7cc8a6a7d2feee6c8868084b7b15a
SHA1545eb3018162645a91651f2ec6b3bde2b24633af
SHA2564fe2b42353d5923e2ae1f4d2159ab133fbace98eddb60c5759441bfaafea206c
SHA512777f0e2557eb6db60e3a0091cfc983d94caf88cc339f576bc4f35f3a28f9d0ee97eb9e03d636440da15088cdd340f66b8884c9459bf5e585d96df6da4b7b946b