Analysis
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max time kernel
142s -
max time network
138s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
13-06-2024 01:31
Static task
static1
Behavioral task
behavioral1
Sample
4433bf3a29e3bfe87c5ad1de6f23caa6.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
4433bf3a29e3bfe87c5ad1de6f23caa6.exe
Resource
win10v2004-20240611-en
General
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Target
4433bf3a29e3bfe87c5ad1de6f23caa6.exe
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Size
4.8MB
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MD5
4433bf3a29e3bfe87c5ad1de6f23caa6
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SHA1
d4a77e5f2a34ea964531c6ffda76b8a6b1ed06e2
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SHA256
395a04d595a1e12f6d75f23808ccef0cf0484c29d706c59882f68057f860ed3f
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SHA512
80cbf6985df943e532af58f82116359327a23b66fe892f792c38211908eb080793c7316f9365bb52bd43e3940ec6d752f3a46a0c0ce617876c9f0624ddde67f1
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SSDEEP
98304:mq0VPCgwzTZCMW0l1e6x3Pe5tRZfuWQ2w+IFjHuoz:6PCdXDW0m6FPCRtFCuoz
Malware Config
Extracted
socks5systemz
bnbzijm.com
http://bnbzijm.com/search/?q=67e28dd83f08f52f150eab187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978f471ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff713c4ed969832
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4512-86-0x0000000000930000-0x00000000009D2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
4433bf3a29e3bfe87c5ad1de6f23caa6.tmpfreeaudioconverter.exefreeaudioconverter.exepid process 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp 2080 freeaudioconverter.exe 4512 freeaudioconverter.exe -
Loads dropped DLL 1 IoCs
Processes:
4433bf3a29e3bfe87c5ad1de6f23caa6.tmppid process 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.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:
4433bf3a29e3bfe87c5ad1de6f23caa6.tmppid process 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
4433bf3a29e3bfe87c5ad1de6f23caa6.exe4433bf3a29e3bfe87c5ad1de6f23caa6.tmpdescription pid process target process PID 4572 wrote to memory of 1388 4572 4433bf3a29e3bfe87c5ad1de6f23caa6.exe 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp PID 4572 wrote to memory of 1388 4572 4433bf3a29e3bfe87c5ad1de6f23caa6.exe 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp PID 4572 wrote to memory of 1388 4572 4433bf3a29e3bfe87c5ad1de6f23caa6.exe 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp PID 1388 wrote to memory of 2080 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp freeaudioconverter.exe PID 1388 wrote to memory of 2080 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp freeaudioconverter.exe PID 1388 wrote to memory of 2080 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp freeaudioconverter.exe PID 1388 wrote to memory of 4512 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp freeaudioconverter.exe PID 1388 wrote to memory of 4512 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp freeaudioconverter.exe PID 1388 wrote to memory of 4512 1388 4433bf3a29e3bfe87c5ad1de6f23caa6.tmp freeaudioconverter.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4433bf3a29e3bfe87c5ad1de6f23caa6.exe"C:\Users\Admin\AppData\Local\Temp\4433bf3a29e3bfe87c5ad1de6f23caa6.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4572 -
C:\Users\Admin\AppData\Local\Temp\is-69K06.tmp\4433bf3a29e3bfe87c5ad1de6f23caa6.tmp"C:\Users\Admin\AppData\Local\Temp\is-69K06.tmp\4433bf3a29e3bfe87c5ad1de6f23caa6.tmp" /SL5="$90066,4731495,54272,C:\Users\Admin\AppData\Local\Temp\4433bf3a29e3bfe87c5ad1de6f23caa6.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1388 -
C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -i3⤵
- Executes dropped EXE
PID:2080 -
C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe"C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exe" -s3⤵
- Executes dropped EXE
PID:4512
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4124,i,6870419347051655189,5491911050420577193,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /prefetch:81⤵PID:4464
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Free Audio Converter\freeaudioconverter.exeFilesize
3.0MB
MD54c80f3201df1fd5e4048ace629d4f59d
SHA11eb6659de58d151e32fbe4d3515b82c6cb082e42
SHA2569eba99d73fb1777c4c446d3502e8fcefd1c9c14b125d71fc8bc1828b3b8a57b9
SHA5128390680989d3fdcb75eb6851da81df9b0e3c95d106af7a16145df492e60bc89a6fabac451de80cb3fbd0941dfca226c107d9270d7e8fe66c7624edab0e9adc03
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C:\Users\Admin\AppData\Local\Temp\is-2UC7D.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-69K06.tmp\4433bf3a29e3bfe87c5ad1de6f23caa6.tmpFilesize
680KB
MD5f519683b3c418feee49361b3411d8c3d
SHA1f981468acbf6b3e1d081a52203f7e3f017fcafe7
SHA2564fc60883a82f58b3a798be19bd6a25592631ac3ccb23af3b1a95c41dab65af4a
SHA512db0e3a2363bb9433cc57d3da42bfb901f0ed128aad2297a88cca1dae650f69a438ef4f7634b945568bb99f59bc587eb698f08cf8dc8162808ac8575fa280c805
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memory/1388-69-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/1388-13-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/2080-63-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/2080-59-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/2080-60-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-74-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-83-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-115-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-112-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-70-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-73-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-109-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-77-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-80-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-67-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-86-0x0000000000930000-0x00000000009D2000-memory.dmpFilesize
648KB
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memory/4512-88-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-93-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-96-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-99-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-102-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4512-105-0x0000000000400000-0x00000000006FB000-memory.dmpFilesize
3.0MB
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memory/4572-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4572-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/4572-68-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB