Analysis
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max time kernel
141s -
max time network
131s -
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 14:26
Static task
static1
Behavioral task
behavioral1
Sample
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral2
Sample
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe
Resource
win11-20240611-en
General
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Target
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe
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Size
5.1MB
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MD5
9e9f38c391a772eb98a05b9104d94d9a
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SHA1
94023dbe26283bee8d9fce76ea58bb9ec1c1c005
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SHA256
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7
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SHA512
c759a67613eef45799883279cb6980d89d251857f926072f6683389339a0283322205da9e7eceff0fbbe296bed2e921685fc01b04dc6511c25b2021084bafd9e
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SSDEEP
98304:CcpzLSwvwAIwNMWN+ooO/bqRFvvoeTlj7kqzGqUsrQxXa:fzuwvjBNTuEKljfzGeQ9a
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/2556-88-0x0000000000B00000-0x0000000000BA2000-memory.dmp family_socks5systemz behavioral2/memory/2556-112-0x0000000000B00000-0x0000000000BA2000-memory.dmp family_socks5systemz behavioral2/memory/2556-113-0x0000000000B00000-0x0000000000BA2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmpvkfreeaudiosaver32_64.exevkfreeaudiosaver32_64.exepid process 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp 4660 vkfreeaudiosaver32_64.exe 2556 vkfreeaudiosaver32_64.exe -
Loads dropped DLL 1 IoCs
Processes:
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmppid process 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.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:
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmppid process 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exec125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmpdescription pid process target process PID 5064 wrote to memory of 1620 5064 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp PID 5064 wrote to memory of 1620 5064 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp PID 5064 wrote to memory of 1620 5064 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp PID 1620 wrote to memory of 4660 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp vkfreeaudiosaver32_64.exe PID 1620 wrote to memory of 4660 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp vkfreeaudiosaver32_64.exe PID 1620 wrote to memory of 4660 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp vkfreeaudiosaver32_64.exe PID 1620 wrote to memory of 2556 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp vkfreeaudiosaver32_64.exe PID 1620 wrote to memory of 2556 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp vkfreeaudiosaver32_64.exe PID 1620 wrote to memory of 2556 1620 c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp vkfreeaudiosaver32_64.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe"C:\Users\Admin\AppData\Local\Temp\c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-3BDG0.tmp\c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp"C:\Users\Admin\AppData\Local\Temp\is-3BDG0.tmp\c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmp" /SL5="$70238,5133764,54272,C:\Users\Admin\AppData\Local\Temp\c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.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\vkfreeaudiosaver32_64.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.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-3BDG0.tmp\c125f12d91e6870322ef19684c54f9a0d21d9ebd0f9a1e626b309d3e3ae54de7.tmpFilesize
680KB
MD5b1397898451beea2b4e9acc92d855238
SHA18260c2c26f3f098dd7aac48262f11fae87f7bf6b
SHA256d0223e1d0f72ea52b3bae90c6e212fd967af81b6a82fb6f87908e4ba5685409f
SHA51260432f96c9a81b95dfe541a08419ffc3f1dcbb2a16bbb129b63e332abe93fdb4076dfe9223eee70aa8a46dc277e1990612e821fe00c389bea0d90bf25d4b800b
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C:\Users\Admin\AppData\Local\Temp\is-GU5RD.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32_64.exeFilesize
3.7MB
MD589e96572239a65440fccb3f7e786b53e
SHA18747ad3bea7774f91a5ea54e73b9b8e7ab9f8866
SHA256400c73158cdba66dbd7becee71f13fbaacd96a1bfe9a396fbf8ca202eb2a3143
SHA5125006fd6e938552990bd493431d34ed512181b5c6de8f45243f53d014c518f8e26177fe78cb166379e993e352cab8c01277206246c7eae00d69bb1c04d21865fa
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memory/1620-71-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/1620-16-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/2556-102-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-76-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-112-0x0000000000B00000-0x0000000000BA2000-memory.dmpFilesize
648KB
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memory/2556-111-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-108-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-67-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-69-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-105-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-120-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-72-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-75-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-113-0x0000000000B00000-0x0000000000BA2000-memory.dmpFilesize
648KB
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memory/2556-79-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-82-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-85-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-88-0x0000000000B00000-0x0000000000BA2000-memory.dmpFilesize
648KB
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memory/2556-91-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-96-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-99-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/2556-117-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/4660-59-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/4660-65-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/4660-63-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/4660-60-0x0000000000400000-0x00000000007AF000-memory.dmpFilesize
3.7MB
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memory/5064-70-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/5064-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/5064-3-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB