Analysis
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max time kernel
133s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
20/11/2024, 09:53
Behavioral task
behavioral1
Sample
3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172.xlsm
Resource
win7-20241010-en
Behavioral task
behavioral2
Sample
3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172.xlsm
Resource
win10v2004-20241007-en
General
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Target
3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172.xlsm
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Size
21KB
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MD5
435309c2bfbaa26ec97f7351685c4cab
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SHA1
107b4cf4aee45673e7ee3f4b3e2f248bdc21a21a
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SHA256
3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172
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SHA512
43694143ec2247cbf0af2d60826fac3c91fba56e1317d070d1e8681aba7db578b7fb4c7a7982a24f7d2488dbdbfc4e643eb2ef6cc4cc5f613d89835274b4229d
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SSDEEP
384:fhuAi/NjZS8EibbwBlwegASYrLb5CzgObff9kC+xbX77NWu:ftsNxzXQFCBn9kC+xbL71
Malware Config
Extracted
http://beetle-j.jp/wp-admin/ErM4mW05tdj/
https://brutobrasil.com.br/pdf/toO18cIP3/
http://e3technology.in/2checkout_integration_php/rDcr1Wl90WWA9M/
Signatures
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Process spawned unexpected child process 1 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 4396 1352 regsvr32.exe 82 -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language regsvr32.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 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 1352 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 1352 EXCEL.EXE 1352 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE 1352 EXCEL.EXE -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1352 wrote to memory of 4396 1352 EXCEL.EXE 95 PID 1352 wrote to memory of 4396 1352 EXCEL.EXE 95 PID 1352 wrote to memory of 4396 1352 EXCEL.EXE 95
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\3b7cf8135798d8a633f0ce97a852372edc47b3ee7ddf77dfa3fd411597abc172.xlsm"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:1352 -
C:\Windows\SysWow64\regsvr32.exeC:\Windows\SysWow64\regsvr32.exe -s ..\rfs.dll2⤵
- Process spawned unexpected child process
- System Location Discovery: System Language Discovery
PID:4396
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
114B
MD5e89f75f918dbdcee28604d4e09dd71d7
SHA1f9d9055e9878723a12063b47d4a1a5f58c3eb1e9
SHA2566dc9c7fc93bb488bb0520a6c780a8d3c0fb5486a4711aca49b4c53fac7393023
SHA5128df0ab2e3679b64a6174deff4259ae5680f88e3ae307e0ea2dfff88ec4ba14f3477c9fe3a5aa5da3a8e857601170a5108ed75f6d6975958ac7a314e4a336aed0