Analysis
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max time kernel
142s -
max time network
130s -
platform
windows11-21h2_x64 -
resource
win11-20240611-en -
resource tags
arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system -
submitted
24-06-2024 22:17
Static task
static1
Behavioral task
behavioral1
Sample
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe
Resource
win11-20240611-en
General
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Target
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe
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Size
4.7MB
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MD5
dbedcaea3700022ee9a431e4d8a7a6d0
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SHA1
2d31e80959a2b81628537db2f8c82312bfe28a4d
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SHA256
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355
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SHA512
45dc7235f4e788df6f686c420c405ea8ec698955765a393d1ebfdf103853c94cf88ef472edbba01829c04cafdb7835768712ad4df27a1468bfac2f67068ed7ea
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SSDEEP
98304:mLosKuYEl/+r66A9ha0U8xebM5TSXAOqRv4CN:D4b0r66KhHWGcAOQ48
Malware Config
Extracted
socks5systemz
bmklimj.com
http://bmklimj.com/search/?q=67e28dd83d0ea428165baf167c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a371ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff613c6e8909832
http://bmklimj.com/search/?q=67e28dd83d0ea428165baf167c27d78406abdd88be4b12eab517aa5c96bd86ea92834496148ab2865b77f80ebad9c40f7cb63037ed2ab423a4664383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e6979c3cc86d9f
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/4364-88-0x0000000000AD0000-0x0000000000B72000-memory.dmp family_socks5systemz behavioral2/memory/4364-112-0x0000000000AD0000-0x0000000000B72000-memory.dmp family_socks5systemz behavioral2/memory/4364-113-0x0000000000AD0000-0x0000000000B72000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmpwinypux32.exewinypux32.exepid process 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp 632 winypux32.exe 4364 winypux32.exe -
Loads dropped DLL 1 IoCs
Processes:
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmppid process 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.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:
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmppid process 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmpdescription pid process target process PID 3092 wrote to memory of 4552 3092 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp PID 3092 wrote to memory of 4552 3092 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp PID 3092 wrote to memory of 4552 3092 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp PID 4552 wrote to memory of 632 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp winypux32.exe PID 4552 wrote to memory of 632 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp winypux32.exe PID 4552 wrote to memory of 632 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp winypux32.exe PID 4552 wrote to memory of 4364 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp winypux32.exe PID 4552 wrote to memory of 4364 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp winypux32.exe PID 4552 wrote to memory of 4364 4552 38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp winypux32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3092 -
C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp"C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp" /SL5="$70062,4722858,54272,C:\Users\Admin\AppData\Local\Temp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4552 -
C:\Users\Admin\AppData\Local\Winypux\winypux32.exe"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -i3⤵
- Executes dropped EXE
PID:632
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C:\Users\Admin\AppData\Local\Winypux\winypux32.exe"C:\Users\Admin\AppData\Local\Winypux\winypux32.exe" -s3⤵
- Executes dropped EXE
PID:4364
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-J3G4B.tmp\38b7d292b0107fce71891f0719164241775c43df69e40bd16662e42b7a03e355.tmp
Filesize680KB
MD558a22210313f4658cd89a8b89fbe724d
SHA164564a394418bd0d993cc97c53250bfcee405365
SHA256710a06d600279fe3e2648eac534811fd8445b79714a7970eefb4bfe19b48e5c9
SHA512a7c2c934cd9f99230600bd25078fc5997ac45bf08acdd9cdd3785d3eb0448dfc4fd6b2ae4ca609eb82922b49e4c33bfe88285bccc8de01202b13d1bc36dcebdf
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Filesize
2.8MB
MD5b6483e2c6a048b03a30a053127348311
SHA197e7a48d992ce63c90a17b9637395e0bbbd1d177
SHA25685bca50c48d17d2ccb74e6a9624e02e5126091b75256a92f5c6194ed7d75acf5
SHA512d8566c42def5e2924fc5cf7c4e4b2f2571e3fc9bb2831bfb12adbeb497e0ffa2f37dc78fc1425cfc9edbe0292dfd26170633c9504e42d25f6616486103a80c42