799045d430d4c4c3368bdeb38ad78ba5703f1099bad72b3086e1f1bb5954ed89

Analysis

max time kernel
120s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/09/2024, 22:47

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General

Target

c6b9dd41d62ab54b09b7e780daeac5a0N.exe
Size

92KB
MD5

c6b9dd41d62ab54b09b7e780daeac5a0
SHA1

85aaf604dcd644341282bc480cf1338e98b3aa84
SHA256

799045d430d4c4c3368bdeb38ad78ba5703f1099bad72b3086e1f1bb5954ed89
SHA512

824ee1d8aef2a78ccc7a12363c3c6d2e96a3ba60338739e555bce558abd54f527994b4640c388adff21f1f9ed8cdcfd795442e87499e3d084c72b3bcb5536f36
SSDEEP

1536:V7Zf/FAxTWY1++PJHJXA/OsIZfzc3/Q8zxSLz:fnyiQSo5Lz

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4362) 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/3840-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000a000000023440-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/3840-850-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\System.Windows.Forms.Design.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ExcelR_OEM_Perp-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019XC2RVL_MAKC2R-pl.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\attach.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\JAWTAccessBridge-64.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\offsymt.ttf.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ObjectModel.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\WindowsFormsIntegration.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\UIAutomationClient.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-string-l1-1-0.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription2-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\Client2019_eula.txt.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVClient.man.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Private.DataContractSerialization.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemXmlLinq.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationClientSideProviders.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Drawing.Design.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ja-jp.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskpred.xml.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Drawing.Primitives.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\System.Xaml.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_SubTrial-pl.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PPINTL.DLL.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\glass.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\bci.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremDemoR_BypassTrial365-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Grace-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\System\msadc\ja-JP\msdaremr.dll.mui.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Primitives.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Google\Chrome\Application\chrome.exe.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\trusted.libraries.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\vstoee100.tlb.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Xaml.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\FPA_FA000000050\FA000000050.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\System\msadc\ja-JP\msadcer.dll.mui.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Numerics.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Candara.xml.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\sunjce_provider.jar.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\meta-index.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\giflib.md.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-ppd.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\oskmenu\oskmenubase.xml.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientLangPack2019_eula.txt.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\ReachFramework.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Calibri-Cambria.xml.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial4-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\glib.md.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\xalan.md.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\he-IL\tipresx.dll.mui.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\ReachFramework.resources.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\bcel.md.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-3101-0000-1000-0000000FF1CE.xml.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Private.CoreLib.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_MAK-ul-oob.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-ul-phn.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Retail-ppd.xrm-ms.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\clrjit.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Data.Common.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework.dll.tmp	c6b9dd41d62ab54b09b7e780daeac5a0N.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	c6b9dd41d62ab54b09b7e780daeac5a0N.exe

C:\Users\Admin\AppData\Local\Temp\c6b9dd41d62ab54b09b7e780daeac5a0N.exe
"C:\Users\Admin\AppData\Local\Temp\c6b9dd41d62ab54b09b7e780daeac5a0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3840

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-1-5-21-2412658365-3084825385-3340777666-1000\desktop.ini.tmp

Filesize
92KB

MD5
2f0d7994969d2e9feb5b2530bf1b6eba

SHA1
b2b0c73319e9fbf054763e03a4a1666024e1b769

SHA256
a29ee50630b6056cd65869811015b82ead2e638958cc15fc38145107594658cc

SHA512
17b7a37956f2255e211d590d962c9e7035d9958cb2e3101653e7decce14dd49193c3848a6291c7592a2aafa168cbb9a4b0f604650623f84395e075b0ced2dc2e

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

Filesize
191KB

MD5
cb065ffc7e7d066b109f208258e35f5a

SHA1
611f0e048f05f7b23bbfbc207f9d3959917b88cd

SHA256
7732a937a5956a028db15e52c8f934016123c49109067fd0ec02f64d08e43f57

SHA512
4554a1925e6742926e1fcce69aef176e186057b8cefc4802ef445eecceb40e7e1852e334a4b7a38991f7af49fa4a031f700b3c81e4bb1e2596569a4fb10a7383

Download Submit
memory/3840-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3840-850-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download