Analysis
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max time kernel
292s -
max time network
300s -
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 22:42
Static task
static1
Behavioral task
behavioral1
Sample
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe
Resource
win10-20240404-en
General
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Target
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe
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Size
5.4MB
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MD5
d9ff3685d869fb364e3e12b2676488a0
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SHA1
973e1a94ebb1b85434b2e8817476bc83603fa561
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SHA256
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726
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SHA512
1e819bc363dde572f6c3d61ecb6b33b2ad04d21c8868a36a6cf30bf63d3c0f670e42d8fe52c97bfaeb407ac38913175612e2fed4fab13d686b473617b02cfddf
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SSDEEP
98304:msEXAXTJPi2QkAdK7E5UtwXZzZCfM15nbuXMByzaPXWPTU+ifOrpmp9Ef9qCgYdk:mAl67jdCG8qZz0fMzbvWPUFEVxgYdA7l
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3052-89-0x00000000009A0000-0x0000000000A42000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmpfiaudioconverter.exefiaudioconverter.exepid process 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp 200 fiaudioconverter.exe 3052 fiaudioconverter.exe -
Loads dropped DLL 3 IoCs
Processes:
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmppid process 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.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:
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmppid process 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmpdescription pid process target process PID 3708 wrote to memory of 3116 3708 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp PID 3708 wrote to memory of 3116 3708 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp PID 3708 wrote to memory of 3116 3708 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp PID 3116 wrote to memory of 200 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp fiaudioconverter.exe PID 3116 wrote to memory of 200 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp fiaudioconverter.exe PID 3116 wrote to memory of 200 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp fiaudioconverter.exe PID 3116 wrote to memory of 3052 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp fiaudioconverter.exe PID 3116 wrote to memory of 3052 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp fiaudioconverter.exe PID 3116 wrote to memory of 3052 3116 26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp fiaudioconverter.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe"C:\Users\Admin\AppData\Local\Temp\26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3708 -
C:\Users\Admin\AppData\Local\Temp\is-I6ITB.tmp\26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp"C:\Users\Admin\AppData\Local\Temp\is-I6ITB.tmp\26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp" /SL5="$70206,5407925,54272,C:\Users\Admin\AppData\Local\Temp\26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3116 -
C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe"C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe" -i3⤵
- Executes dropped EXE
PID:200
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C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe"C:\Users\Admin\AppData\Local\FIaudioConverter\fiaudioconverter.exe" -s3⤵
- Executes dropped EXE
PID:3052
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.7MB
MD5b679fecf43b8f6f3d84e60c0dd48d3be
SHA1e699029d8e183ffb58cc748faef346ecb320e87c
SHA25654c7c6ab7c62910a604de46055bf6f3a5f8b501c9d2eaadc38df6292bfe0ddb0
SHA512821aaf55586a89c88f82e0f9486ddd44e5524ffe7d19c8c4ed1d26779da2fd4d92bef8ce17ea58307edfd799afc98ec045ddc44f00efa6d46aaf3e9c86e18456
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C:\Users\Admin\AppData\Local\Temp\is-I6ITB.tmp\26b9438c54564bf9b40b4f17641d995b21e42421a50f32ff8b39dc46447ce726.tmp
Filesize680KB
MD5791348257179b7a0bd2a513fc9b19618
SHA1783834fa3c937de3d5cefc1e72cfd0cc63c657fc
SHA2565cdf04dee7d14c9c6d768d5c3092979f3be25f5148ef39051dee584a662c921c
SHA5128e68ed3e98f5066e5aa61e30fbe24ab500274e7994d74e8b167f5cd2b1512dde8a5c89cb5a8eedd4ae67b1414c08b312c999e79008d9e7c0255cb0c1a323ab63
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4