Analysis
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max time kernel
141s -
max time network
127s -
platform
windows11-21h2_x64 -
resource
win11-20240611-en -
resource tags
arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system -
submitted
29-06-2024 05:51
Static task
static1
Behavioral task
behavioral1
Sample
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe
Resource
win11-20240611-en
General
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Target
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe
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Size
5.1MB
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MD5
326ead0c53755bc7859b3b0bf6a449f8
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SHA1
e151a6f7a9b6da5d0670dabdd1346d878c575f14
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SHA256
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d
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SHA512
63134c36fa3330bd31ca42c9c5a83aff660016b4025878dd4030b5969384be623e7d38e6ee1683e4d3875666564ef1cf8b9bf92d338885fc8810e808fa2f6992
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SSDEEP
98304:CMycSTpTZnZUfN+K3hrNcPLxKX6tkrVBwdmF++q9nYx6H62rv5wgjWMGfqQxq:ABtTZnSfNb3PYxKXhrrz+5prBgqQQ
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/1180-87-0x0000000000AC0000-0x0000000000B61000-memory.dmp family_socks5systemz behavioral2/memory/1180-111-0x0000000000AC0000-0x0000000000B61000-memory.dmp family_socks5systemz behavioral2/memory/1180-112-0x0000000000AC0000-0x0000000000B61000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmpvkfreeaudiosaver.exevkfreeaudiosaver.exepid process 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp 3156 vkfreeaudiosaver.exe 1180 vkfreeaudiosaver.exe -
Loads dropped DLL 1 IoCs
Processes:
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmppid process 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 45.155.250.90 -
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:
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmppid process 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmpdescription pid process target process PID 4472 wrote to memory of 4748 4472 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp PID 4472 wrote to memory of 4748 4472 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp PID 4472 wrote to memory of 4748 4472 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp PID 4748 wrote to memory of 3156 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp vkfreeaudiosaver.exe PID 4748 wrote to memory of 3156 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp vkfreeaudiosaver.exe PID 4748 wrote to memory of 3156 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp vkfreeaudiosaver.exe PID 4748 wrote to memory of 1180 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp vkfreeaudiosaver.exe PID 4748 wrote to memory of 1180 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp vkfreeaudiosaver.exe PID 4748 wrote to memory of 1180 4748 8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp vkfreeaudiosaver.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe"C:\Users\Admin\AppData\Local\Temp\8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-QMN0T.tmp\8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp"C:\Users\Admin\AppData\Local\Temp\is-QMN0T.tmp\8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmp" /SL5="$40204,5148212,54272,C:\Users\Admin\AppData\Local\Temp\8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\is-M72NQ.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-QMN0T.tmp\8121657a2ddd153ff7f7eedf4ea7f6e96976628ee27ca9818285814463c5956d.tmpFilesize
680KB
MD52aab30954592b5c136a73992d432941b
SHA109fed957547ed267657834881c4e0ae2a71cdc16
SHA256c849f3903bfbdcdf6aefa4dc537e399c934042595cb62ff3def064e25d57eac0
SHA5120a123b35357a46e1cfe007f4727736cc4fe27ef9441405e9e7f71973dc7ecbaeac08a47ec8ae2989745b21d9b8158fba9452d102335f773598b35aa9c3fa855b
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exeFilesize
3.5MB
MD5a1273e68a77c8a82226eea605e8ac56d
SHA113343c94d0813570bf32716220ad9d64a8ce5011
SHA256109a93c07d0345dbfd84c2d4efeeb6b8e4cb91c059926c1038fdb66e2e03cd18
SHA5124bfa009209c0d55be540e6e8ac5240b1a05e4fa00f9f9fd0d50dc55d1a2911d297fbcce6ac74ae590f2e38b05ae37bfc5e83637a367d63c407a43d3575fa2965
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memory/1180-95-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-78-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-119-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-116-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-112-0x0000000000AC0000-0x0000000000B61000-memory.dmpFilesize
644KB
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memory/1180-111-0x0000000000AC0000-0x0000000000B61000-memory.dmpFilesize
644KB
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memory/1180-67-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-68-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-110-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-107-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-71-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-74-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-75-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-104-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-81-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-84-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-87-0x0000000000AC0000-0x0000000000B61000-memory.dmpFilesize
644KB
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memory/1180-89-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-101-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/1180-98-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/3156-60-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/3156-64-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/3156-59-0x0000000000400000-0x0000000000777000-memory.dmpFilesize
3.5MB
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memory/4472-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4472-69-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4472-3-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/4748-12-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/4748-70-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB