Analysis
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max time kernel
292s -
max time network
247s -
platform
windows7_x64 -
resource
win7-20240611-en -
resource tags
arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system -
submitted
14-06-2024 00:12
Static task
static1
Behavioral task
behavioral1
Sample
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe
Resource
win10-20240404-en
General
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Target
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe
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Size
4.9MB
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MD5
a31fdf27cfd3d8057db491e55696b7c3
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SHA1
aeff4eca924c6b0dc2091e4d2d4e08b73187f7de
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SHA256
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c
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SHA512
ac00c3ac501dc00d03dc383d07b352058b588ffeb4e43131361bbbe6f729122729830fae928124928bf59168adbdbfc0d652bc38afb5ebeec06759ee84a4ce0c
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SSDEEP
98304:mSwGM3Z/u93SEQiH5SNfRAHaChnqG5rGDkQ3sABLLhtNAeGIOZ1:nwGABul37ZSBR2alorsbLLhtKxF
Malware Config
Extracted
socks5systemz
bhgudri.com
http://bhgudri.com/search/?q=67e28dd86f54a728120ffa1d7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f771ea771795af8e05c645db22f31df92d8b38e316a667d307eca743ec4c2b07b52966923a6f8dfd15c0ef90
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/2548-92-0x00000000026A0000-0x0000000002742000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmpfreeaudioconverter.exefreeaudioconverter.exepid process 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp 2556 freeaudioconverter.exe 2548 freeaudioconverter.exe -
Loads dropped DLL 5 IoCs
Processes:
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exef7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmppid process 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.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 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:
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmppid process 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exef7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmpdescription pid process target process PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 2808 wrote to memory of 912 2808 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp PID 912 wrote to memory of 2556 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2556 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2556 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2556 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2548 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2548 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2548 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe PID 912 wrote to memory of 2548 912 f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp freeaudioconverter.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe"C:\Users\Admin\AppData\Local\Temp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-CM4PH.tmp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp"C:\Users\Admin\AppData\Local\Temp\is-CM4PH.tmp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmp" /SL5="$30144,4935675,54272,C:\Users\Admin\AppData\Local\Temp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.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\Free Audio Converter\freeaudioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.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\Free Audio Converter\freeaudioconverter.exeFilesize
3.2MB
MD50a865bfbaa646a3e59b470406e88e970
SHA1b82ff5f8448032602e3fc694cc2ade8938cb026b
SHA2569ee466605c1c47f49a4bbe67c41e9d46fee914477eff657bcc8b06844155ad4b
SHA51286ac722f10952dc83a5659930ee9d1ec9792c54e7818a5ed1280a8983aa34c5c529c0f488976d8bc144ea6c2b494f014d1bad1dea2a946d32cef465e58360706
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\Users\Admin\AppData\Local\Temp\is-CM4PH.tmp\f7fde436ceceabfaa6bfda5572030e730bf0912c215664af9b9fda62e5e08b6c.tmpFilesize
680KB
MD59bb8c76757a1b6b0a856e84abc7f76e5
SHA1261c49666d14641a4976700e84e7eb3436233ccb
SHA256d813e79399dda10a79eefb75b807e7b197254c33baaaf4e479ad917b47a01a4d
SHA51266ca42349cfe56d70562ab869a4a0072ce4c9e2ca0e5c643da989cf15a89e7454d3e4a5e6eb78c5ba6af38e2cdcbe2ba98a549039ceca320c8c7d81d807476c5
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\Users\Admin\AppData\Local\Temp\is-G7IIE.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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\Users\Admin\AppData\Local\Temp\is-G7IIE.tmp\_isetup\_shfoldr.dllFilesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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memory/912-79-0x0000000003BF0000-0x0000000003F1D000-memory.dmpFilesize
3.2MB
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memory/912-64-0x0000000003BF0000-0x0000000003F1D000-memory.dmpFilesize
3.2MB
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memory/912-19-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/912-74-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/2548-110-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-92-0x00000000026A0000-0x0000000002742000-memory.dmpFilesize
648KB
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memory/2548-137-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-71-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-132-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-129-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-75-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-78-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-126-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-82-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-85-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-88-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-91-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-123-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-98-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-101-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-104-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-107-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-120-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-113-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2548-117-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2556-66-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2556-65-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2556-69-0x0000000000400000-0x000000000072D000-memory.dmpFilesize
3.2MB
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memory/2808-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/2808-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/2808-73-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB