Analysis
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max time kernel
123s -
max time network
129s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
09-06-2024 06:03
Static task
static1
Behavioral task
behavioral1
Sample
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe
Resource
win11-20240426-en
General
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Target
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe
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Size
4.6MB
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MD5
6d37dfd43fe60ea1ec709e38e11c93de
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SHA1
aa535a2b2858e9991b6dddd391254b78fb654c88
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SHA256
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1
-
SHA512
66c50bc47e62d6066ab0519bb9890ab23f9fa1cd57f57a61aee124349d6548400815a7f341ceea4d70c3442e1cccf270f026a817a42d50f1c37933b6a05bbec6
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SSDEEP
98304:m625nEAey9Pe2a/Thwac4p6g98YevsugBrJdDUxj0WM/O2:HmEnMi7hwa9SmHCwG2
Malware Config
Extracted
socks5systemz
butduaj.com
http://butduaj.com/search/?q=67e28dd83d5fa77a480faf1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff818c1ec959d39
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4348-86-0x00000000009B0000-0x0000000000A52000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmpvirtualsoundcard.exevirtualsoundcard.exepid process 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp 1700 virtualsoundcard.exe 4348 virtualsoundcard.exe -
Loads dropped DLL 1 IoCs
Processes:
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmppid process 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.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:
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmppid process 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmpdescription pid process target process PID 3516 wrote to memory of 2200 3516 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp PID 3516 wrote to memory of 2200 3516 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp PID 3516 wrote to memory of 2200 3516 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp PID 2200 wrote to memory of 1700 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp virtualsoundcard.exe PID 2200 wrote to memory of 1700 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp virtualsoundcard.exe PID 2200 wrote to memory of 1700 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp virtualsoundcard.exe PID 2200 wrote to memory of 4348 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp virtualsoundcard.exe PID 2200 wrote to memory of 4348 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp virtualsoundcard.exe PID 2200 wrote to memory of 4348 2200 753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp virtualsoundcard.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe"C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3516 -
C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp"C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmp" /SL5="$4021C,4587786,54272,C:\Users\Admin\AppData\Local\Temp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2200 -
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -i3⤵
- Executes dropped EXE
PID:1700 -
C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe"C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exe" -s3⤵
- Executes dropped EXE
PID:4348
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-2S0ON.tmp\753ea801ae752661103a6dc26db54185f6bf7294cd7957343583f0377cae47a1.tmpFilesize
680KB
MD594ebd7c7c5adcf2267929fba503116d5
SHA1e7bd7046fc47d6d80e6817580fcd5aff9e198828
SHA256f9af6cca41dec59fbcd3a34f5b5f896d426d8aa174398bfd6be6020e10c8f7ed
SHA512de6874a3a0ab12aad2713c6363b561e4a709766ce4e139bba91fd420b6151254c8b1451a8d368f3dba076d639f53cd7e7860ede9c192a2e71c11c310afc6daad
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C:\Users\Admin\AppData\Local\Temp\is-G68K2.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Virtual Sound Card\virtualsoundcard.exeFilesize
2.6MB
MD540b6b101e2ae979a0040133ace3f9829
SHA1cbd72391ec7fb36a909e1ea05fd9b86e495eaa19
SHA2563c58baf2a4d86e869276e5e69cdacb60389ac9a622b213d0fefe2344d1cf1b4c
SHA51262a74607e3be3bd6081e219e9658517c6af10cb45877c7e24790543cb1a743746c8143685a0d49371d0e8a9c652497eb06093d7ba40d30db6f18d0bcab9301f8
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memory/1700-60-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/1700-63-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/1700-65-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/1700-59-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/2200-70-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/2200-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3516-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/3516-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3516-69-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4348-74-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-94-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-68-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-75-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-78-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-81-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-84-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-89-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-86-0x00000000009B0000-0x0000000000A52000-memory.dmpFilesize
648KB
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memory/4348-71-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-97-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-100-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-103-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-106-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-109-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-113-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB
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memory/4348-116-0x0000000000400000-0x00000000006A7000-memory.dmpFilesize
2.7MB