Analysis
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max time kernel
292s -
max time network
299s -
platform
windows10-1703_x64 -
resource
win10-20240404-en -
resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system -
submitted
30-05-2024 22:50
Static task
static1
Behavioral task
behavioral1
Sample
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe
Resource
win10-20240404-en
General
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Target
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe
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Size
5.2MB
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MD5
36399fe72e5a8a29a42defe1700126e2
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SHA1
bff21a2c1a8203aee5a2c2a5aa3259e73206ca95
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SHA256
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620
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SHA512
b4461aed93798bb2a10495441e19a0f04f0ec8aff71b16e6ac2f219218a23e988381f4a72c38fc3977e06cfedbaa847ba236a4e96633d966a7b16045a2d2c899
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SSDEEP
98304:mtX/40VylSlgJ68ZHIoLzBET1O2S9byQBxfke2tCFq/kABxtjknL5XHBUn:ojP8NzmT1A9fBV/RBynoL5XBA
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/924-81-0x00000000009B0000-0x0000000000A52000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmpfgaudioconverter.exefgaudioconverter.exepid process 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp 4320 fgaudioconverter.exe 924 fgaudioconverter.exe -
Loads dropped DLL 1 IoCs
Processes:
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmppid process 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp -
Unexpected DNS network traffic destination 2 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 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:
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmppid process 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmpdescription pid process target process PID 3320 wrote to memory of 5080 3320 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp PID 3320 wrote to memory of 5080 3320 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp PID 3320 wrote to memory of 5080 3320 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp PID 5080 wrote to memory of 4320 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp fgaudioconverter.exe PID 5080 wrote to memory of 4320 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp fgaudioconverter.exe PID 5080 wrote to memory of 4320 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp fgaudioconverter.exe PID 5080 wrote to memory of 924 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp fgaudioconverter.exe PID 5080 wrote to memory of 924 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp fgaudioconverter.exe PID 5080 wrote to memory of 924 5080 41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp fgaudioconverter.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3320 -
C:\Users\Admin\AppData\Local\Temp\is-PPEG1.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp"C:\Users\Admin\AppData\Local\Temp\is-PPEG1.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp" /SL5="$A01D4,5215766,54272,C:\Users\Admin\AppData\Local\Temp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:5080 -
C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe"C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -i3⤵
- Executes dropped EXE
PID:4320
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C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe"C:\Users\Admin\AppData\Local\FGaudioConverter\fgaudioconverter.exe" -s3⤵
- Executes dropped EXE
PID:924
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
3.0MB
MD554bb512779fff17f1e18a4536bb4eb6e
SHA19c803ac2b98c99d5d910a3ee861155972c3686dc
SHA256ecaf1c1a8ed3bc3b76db24bff44a354f911fa6389becf97e12cb5520f3c83265
SHA512ac4bc29abf1f612d102f90196dede30e76bcddc253bba005453a05bc8193e1286a1e01414344272f3c70cf45ae557091f900b3df278ae226899e714012614dc6
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C:\Users\Admin\AppData\Local\Temp\is-PPEG1.tmp\41ac40b2bfefb99f005d2cda19ce5dceeec9fcf4766bf3e4b31d36f18204f620.tmp
Filesize680KB
MD522c743dcbbae142041449e2c8bb0873b
SHA1ce0e4d3a73cb2f46394c6de0fcb0183add05a9df
SHA25670e074a2f14bd8adaf5ad28af20d322495ecd0a9f46feffa546ed5923d08af77
SHA512e111757e6bde4318bb9cb64b2716bc4a9a485b3f60c932885a30ec456782dfcccc519b322431e30ad6bc71e9c270be92aba865f3af29f61316dc03b14913e04e
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63