bc42a08b81fdefada23fa327e3c601023d2010d280eba9f407885d9f8e65372c

Analysis

max time kernel
120s
max time network
100s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/09/2024, 12:52

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General

Target

75b2717b798fa936f64b34dcd90ab180N.exe
Size

41KB
MD5

75b2717b798fa936f64b34dcd90ab180
SHA1

c5dd0e3f294f764159da41b55ef5798efdd40359
SHA256

bc42a08b81fdefada23fa327e3c601023d2010d280eba9f407885d9f8e65372c
SHA512

19f5617d91a3f0b78eff54043b23235e276d129ab3c974314140ab5d3eeca5a24176c798c7204a044c617e4a0513ce9f6b7958e76c623819e998944c51a2ccd4
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcwBcCBcw/tio/ti/r0:CTW7JJ7TTQoQ/r0

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4690) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3008-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00090000000233f9-2.dat	upx
behavioral2/files/0x0004000000022933-6.dat	upx
behavioral2/memory/3008-913-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Input.Manipulations.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Grace-ul-oob.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Grace-ul-oob.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.OpenSsl.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\System.Windows.Input.Manipulations.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Forms.Design.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-util-l1-1-0.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\joni.md.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy.jar.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp2-ul-oob.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.Extensions.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Extensions.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\ReachFramework.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jre-1.8\bin\keytool.exe.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Retail-ul-phn.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_SubTest-ul-oob.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\auxpad.xml.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\Microsoft.VisualBasic.Forms.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_LinkDrop32x32.gif.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-localization-l1-2-0.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest4-pl.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.DocumentServices.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\th-TH\tipresx.dll.mui.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Input.Manipulations.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\System.Xaml.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ms.pak.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Internet Explorer\ja-JP\iexplore.exe.mui.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.Reporting.Common.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\lv-LV\tipresx.dll.mui.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.NETCore.App.deps.json.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Principal.Windows.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_MAK-ppd.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProVL_MAK-ul-oob.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ODBCTRAC.DLL.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\officestoragehost.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\WindowsFormsIntegration.resources.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\jopt-simple.md.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_Retail-ul-phn.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_MAK-ppd.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\SETLANG_COL.HXT.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\mscordaccore.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.FileSystem.Watcher.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ppd.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-pl.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\ReportingServicesNativeClient.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OFFSYML.TTF.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.da-dk.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\InkDiv.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-filesystem-l1-1-0.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_MAK_AE-pl.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Grace-ppd.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-black_scale-140.png.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Redshift\lib\OpenSSL64.DllA\openssl64.dlla.manifest.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\InputPersonalization.exe.mui.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.Mail.dll.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\xmlresolver.md.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Grace-ul-oob.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Retail-pl.xrm-ms.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\7-Zip\Lang\sr-spc.txt.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ja-JP\tipresx.dll.mui.tmp	75b2717b798fa936f64b34dcd90ab180N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\cryptix.md.tmp	75b2717b798fa936f64b34dcd90ab180N.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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	75b2717b798fa936f64b34dcd90ab180N.exe

C:\Users\Admin\AppData\Local\Temp\75b2717b798fa936f64b34dcd90ab180N.exe
"C:\Users\Admin\AppData\Local\Temp\75b2717b798fa936f64b34dcd90ab180N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-1194130065-3471212556-1656947724-1000\desktop.ini.tmp

Filesize
41KB

MD5
71199ce0524b6139a2094f72d8d3decd

SHA1
660c7f1b9e08604c5d472b0d98e9fcaf5055f7f2

SHA256
7e914758b319dbd47f80d221dd068699d17f3562d63971628c975667e612461e

SHA512
47226a99460ade874ef2f20d8309b8a33f76b9385a438b12d0d8cd65704523c8bddf44724aead2b9c458dc1625b598ad67c879675f82192ce82e3d139b79de0d

Download Submit
C:\Program Files\7-Zip\7-zip.dll.tmp

Filesize
140KB

MD5
28691c5c5f2a8de53e809a9db9c50af1

SHA1
13794f2eff8fddcb0076d2812135962611c806a3

SHA256
5d5f66e19c575d492aac75117310661121674a10ac01ae6ba553af9fe027f64a

SHA512
e8c3200603e0c626951d27ae29b8eb8dd70cfa011b70fcb0724f9b17cb739430cf7d38c9916c67e13a60ae3155d5c68f158deb02a7563595c4a747c67dd684c3

Download Submit
memory/3008-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3008-913-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download