Analysis
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max time kernel
147s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240508-en -
resource tags
arch:x64arch:x86image:win11-20240508-enlocale:en-usos:windows11-21h2-x64system -
submitted
29-06-2024 04:17
Static task
static1
Behavioral task
behavioral1
Sample
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe
Resource
win11-20240508-en
General
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Target
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe
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Size
4.9MB
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MD5
cd0ba9cf087f93c8a3c423241e8fead8
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SHA1
5b81c3185672e5d74e8480ab5797861bfa593315
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SHA256
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795
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SHA512
f2202daf2eaa8179063002663415574653b7bcd78dceee2921e7778e8bcaf14cdde015c0425391872485409c5240e2bb1ee6aa5f5bb12740a22cbfc3ef88bc40
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SSDEEP
98304:CCQmysanRBNYbbLMywtFw1o9j6UErdjmqdeT29v0KiFhAtVwThlngDo2Na+nTQxu:omt0q/LMyk9wqqdy0sKiPAtVWhJgTtTD
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3816-87-0x0000000000A10000-0x0000000000AB1000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmpvkfreeaudiosaver.exevkfreeaudiosaver.exepid process 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp 432 vkfreeaudiosaver.exe 3816 vkfreeaudiosaver.exe -
Loads dropped DLL 1 IoCs
Processes:
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmppid process 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp -
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 152.89.198.214 Destination IP 91.211.247.248 Destination IP 91.211.247.248 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmppid process 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmpdescription pid process target process PID 3304 wrote to memory of 3772 3304 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp PID 3304 wrote to memory of 3772 3304 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp PID 3304 wrote to memory of 3772 3304 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp PID 3772 wrote to memory of 432 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp vkfreeaudiosaver.exe PID 3772 wrote to memory of 432 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp vkfreeaudiosaver.exe PID 3772 wrote to memory of 432 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp vkfreeaudiosaver.exe PID 3772 wrote to memory of 3816 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp vkfreeaudiosaver.exe PID 3772 wrote to memory of 3816 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp vkfreeaudiosaver.exe PID 3772 wrote to memory of 3816 3772 4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp vkfreeaudiosaver.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe"C:\Users\Admin\AppData\Local\Temp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-RQT3Q.tmp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp"C:\Users\Admin\AppData\Local\Temp\is-RQT3Q.tmp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmp" /SL5="$40208,4892726,54272,C:\Users\Admin\AppData\Local\Temp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -s3⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-Q7DBE.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-RQT3Q.tmp\4b625367c8965b0ff1676e97a7e96bb1131a1d11ed2ef4263d701adc80886795.tmpFilesize
680KB
MD51a7fbe9723876a61fefe7f773c65e764
SHA15137048c3e0c14f0c7cc3bf82c03028ccb3e5d50
SHA256fa413cdf3dcccae8ca1c65264878b4697bb88d7ccac4963dd75d99990a2f851b
SHA512a906aef973d5ef18e078d9377555ff9d499fac2ffbca526d5708d95446bd89c31eb98e791dcde22c150a7df1c3d31a583fb9398da1e0cbc4677302e6a0a0af43
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exeFilesize
3.2MB
MD5c1b8d21a2214a04ef4cef9fd89d49ced
SHA191da09b0a8d00dbcf27ddcf3421cb904969db8e1
SHA256cee35f451b6c88aa0acfc6669621683b54fb71799219be7a729a97a6db6c784a
SHA512d6cae450cdd3857e511a45715e11daddb5a7a9a5ae028afcbbf4659bcf4383760e75cae97add7155a278f8d36ad260fb94606f5434a55e4c9db7ac2f3f3353ea
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memory/432-59-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/432-64-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/432-60-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3304-69-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3304-3-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/3304-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3772-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3772-70-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3816-74-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-90-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-71-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-68-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-75-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-78-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-81-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-84-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-87-0x0000000000A10000-0x0000000000AB1000-memory.dmpFilesize
644KB
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memory/3816-66-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-95-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-98-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-101-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-104-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-107-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-110-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-113-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB
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memory/3816-116-0x0000000000400000-0x000000000072B000-memory.dmpFilesize
3.2MB