Analysis
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max time kernel
150s -
max time network
102s -
platform
windows11-21h2_x64 -
resource
win11-20250502-en -
resource tags
arch:x64arch:x86image:win11-20250502-enlocale:en-usos:windows11-21h2-x64system -
submitted
29/05/2025, 11:55
Static task
static1
Behavioral task
behavioral1
Sample
2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe
Resource
win10v2004-20250502-en
Behavioral task
behavioral2
Sample
2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe
Resource
win11-20250502-en
General
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Target
2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe
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Size
7.3MB
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MD5
3d8ff4e557fda46d35764966472eafd0
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SHA1
99c2d5a979ab966ff2a02a9137446af9fcbc9870
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SHA256
2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a
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SHA512
120fab64f0df9c62767166f938af617e0861557d279daba307d23bea22d4e19c8e0e24b3e854ef5c8aaa7621b5fa6030629ab0e53fd9811b17a5bc1612d30c5f
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SSDEEP
98304:+waCELMjOLIalJ67sj4jmpRMTcToaxLQsp1RXp9nGeyYnXrwFZN8M4:+waCYLIal06MTo9RPGeyurwmL
Malware Config
Signatures
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Cosmu family
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Detects Cosmu payload 1 IoCs
Cosmu is a worm written in C++.
resource yara_rule behavioral2/memory/3724-85-0x0000000000400000-0x0000000000407000-memory.dmp family_cosmu -
Renames multiple (350) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Drops file in Program Files directory 64 IoCs
description ioc Process File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\clrjit.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\uz.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVFileSystemMetadata.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsjpn.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\fa.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\tg.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RHeartbeatConfig.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\fr-FR\rtscom.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-process-l1-1-0.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\ucrtbase.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsrus.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\it-IT\rtscom.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOLoader.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\7-zip.chm.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\Ole DB\de-DE\sqloledb.rll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.en-us.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\fr-FR\TipRes.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\Ole DB\ja-JP\sqlxmlx.rll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-filesystem-l1-1-0.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\7zCon.sfx.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\ja-jp-sym.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipschs.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\Ole DB\es-ES\sqlxmlx.rll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\Ole DB\sqlxmlx.rll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVOrchestration.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pl-pl.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\de-DE\TabTip.exe.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\insert\insertbase.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\it-IT\InputPersonalization.exe.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\ja-JP\tipresx.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\es-ES\msinfo32.exe.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\Ole DB\fr-FR\sqlxmlx.rll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-file-l1-2-0.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\bg.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\InputPersonalization.exe.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsrom.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\Ole DB\en-US\sqloledb.rll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskpred\oskpredbase.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\ado\msader15.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\ado\msado15.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\msadc\fr-FR\msdaremr.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\uk.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\mshwLatin.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\MSInfo\msinfo32.exe.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\ado\adojavas.inc.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\ado\it-IT\msader15.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\msadc\de-DE\msadcor.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\ja-jp.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\pt-PT\tipresx.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Uninstall.exe.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\msadc\it-IT\msdaremr.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-stdio-l1-1-0.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\bg-BG\tipresx.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\tpcps.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\ka.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\kk.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\ku.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\7-Zip\Lang\ru.txt.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\en-US\InputPersonalization.exe.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\ipsptg.xml.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\System\msadc\es-ES\msadcor.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.uk-ua.dll.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\Common Files\microsoft shared\ink\uk-UA\tabskb.dll.mui.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe File created C:\Program Files\dotnet\dotnet.exe.tmp 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe"C:\Users\Admin\AppData\Local\Temp\2f5d007bdd6a54ed13f2ffec7c25554a27d5f4ed7f20052b4b98b4e375d0f41a.exe"1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3724
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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Filesize
7.3MB
MD516e1dcf6610233508b5f47884929c6a1
SHA1e1da555385fdf75824129e02b5da423892f9e5b3
SHA256c5292dcca371b6144f751a06b6ea83c1a04c6a92d9cba0d8b6c24b3ecd6c985c
SHA5129ccc1e0bf0c23f264045778b655804583a11619f1ccc88c0c73bd6a4c34c192717bf93fa54bbe9906cb7da7b02bdf4323c88c73edb72b2ec146397678a781ad2
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Filesize
7.4MB
MD5e5778a5a0aa7ae43828bcc33ba2d4fcd
SHA131795adc08f4f6cc737bbbe35ba138193823d048
SHA2563cda5bcd692b443e01775f0eeb2cc1acf479cf59dddf9c7e5ca2e47c2dc7a821
SHA512832edd962a7a5bd5a60987d5dd0377e7d2b43927ad736129de5ce8469790830e8f6dc4e74365056176f739ef83068650e66941af011b5c37ffb87b6477236acb