Analysis
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max time kernel
147s -
max time network
150s -
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 05:21
Static task
static1
Behavioral task
behavioral1
Sample
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral2
Sample
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe
Resource
win11-20240611-en
General
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Target
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe
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Size
5.0MB
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MD5
1c4169f5188cf760b1c07f223d357471
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SHA1
185bf51cb81391e0a3cdaee0dbd3165233fdf0d1
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SHA256
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a
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SHA512
eece5d8ac3fc9f3e0c76227e0240031ef12992f53f1273dd1a1406b5b4fb9795c050d123b6b0f852427b20d3bed45a19117e952d804d0089f91d1b7ce61b25c4
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SSDEEP
98304:Cj1rmYKRGqDafQ2In73qF4TVrYBq8WIM89AXsYmp3DBPJB77UCahog94FEG42Qxq:y9KoZYDn7A4ZUBvWIRrbB7nEgY2QQ
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/1660-88-0x0000000000B20000-0x0000000000BC1000-memory.dmp family_socks5systemz behavioral2/memory/1660-112-0x0000000000B20000-0x0000000000BC1000-memory.dmp family_socks5systemz behavioral2/memory/1660-113-0x0000000000B20000-0x0000000000BC1000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmpvkfreeaudiosaver.exevkfreeaudiosaver.exepid process 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp 2212 vkfreeaudiosaver.exe 1660 vkfreeaudiosaver.exe -
Loads dropped DLL 1 IoCs
Processes:
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmppid process 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.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 141.98.234.31 -
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:
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmppid process 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmpdescription pid process target process PID 5108 wrote to memory of 2508 5108 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp PID 5108 wrote to memory of 2508 5108 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp PID 5108 wrote to memory of 2508 5108 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp PID 2508 wrote to memory of 2212 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp vkfreeaudiosaver.exe PID 2508 wrote to memory of 2212 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp vkfreeaudiosaver.exe PID 2508 wrote to memory of 2212 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp vkfreeaudiosaver.exe PID 2508 wrote to memory of 1660 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp vkfreeaudiosaver.exe PID 2508 wrote to memory of 1660 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp vkfreeaudiosaver.exe PID 2508 wrote to memory of 1660 2508 66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp vkfreeaudiosaver.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe"C:\Users\Admin\AppData\Local\Temp\66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-TUF8M.tmp\66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp"C:\Users\Admin\AppData\Local\Temp\is-TUF8M.tmp\66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmp" /SL5="$40206,4971760,54272,C:\Users\Admin\AppData\Local\Temp\66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.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-BH7K3.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-TUF8M.tmp\66f43dc87add360992d8d1b5e7e0d551b0db5018c6486467502adadc0487447a.tmpFilesize
680KB
MD52aab30954592b5c136a73992d432941b
SHA109fed957547ed267657834881c4e0ae2a71cdc16
SHA256c849f3903bfbdcdf6aefa4dc537e399c934042595cb62ff3def064e25d57eac0
SHA5120a123b35357a46e1cfe007f4727736cc4fe27ef9441405e9e7f71973dc7ecbaeac08a47ec8ae2989745b21d9b8158fba9452d102335f773598b35aa9c3fa855b
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exeFilesize
3.3MB
MD5263d477c1f28f9842ca749ce47f52964
SHA1c20f858b73abace271297fad11262931427adc43
SHA2561eb8e552019b5a443db472cdd191f4400914ffc5c3e7d2192d11da0fc7487fed
SHA512e257a246ca7012de372a0c69bb48d9a93e9f668c9827c40c495ccb4135673eec616474023879b9fb210e06a37e9e9087faf70b0cebcac9171e99801e265a11c6
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memory/1660-102-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-105-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-79-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-120-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-82-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-117-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-113-0x0000000000B20000-0x0000000000BC1000-memory.dmpFilesize
644KB
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memory/1660-67-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-69-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-112-0x0000000000B20000-0x0000000000BC1000-memory.dmpFilesize
644KB
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memory/1660-111-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-85-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-75-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-76-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-108-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-99-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-72-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-88-0x0000000000B20000-0x0000000000BC1000-memory.dmpFilesize
644KB
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memory/1660-90-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/1660-96-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/2212-60-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/2212-65-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/2212-64-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/2212-59-0x0000000000400000-0x0000000000745000-memory.dmpFilesize
3.3MB
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memory/2508-7-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/2508-71-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/5108-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/5108-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/5108-70-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB