5e6d62e28b5f39944528ef40d708a06ec10924c24fb2714dbb67bb189f9c5651

Analysis

max time kernel
120s
max time network
107s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/08/2024, 13:25

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General

Target

91af6d4c720287ff4689db2d1a000310N.exe
Size

31KB
MD5

91af6d4c720287ff4689db2d1a000310
SHA1

911a1ceee67326bb88f25442444f5dbdb3a55a00
SHA256

5e6d62e28b5f39944528ef40d708a06ec10924c24fb2714dbb67bb189f9c5651
SHA512

8698192f9b6b33950939081d0729440af0ec4faebf56930a3a6ad630e57c9df263d537bfdfb3dfb0c6c5d7ab2d7c53c6dbf7731af190232229ca94989562dbaf
SSDEEP

384:QOlIBXDaU7CPKK0TIhfJJ1Evd5BvhzaM9mSIEvd5BvhzaM9mSsxmMxm9+9B0Q0/C:kBT37CPKKdJJ1EXBwzEXBwdcMcI95rv

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4657) 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/3612-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000900000002348b-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/3612-860-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jre-1.8\lib\ext\meta-index.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-white_scale-140.png.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsfra.xml.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\PresentationFramework.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Grace-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mip_upe_sdk.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\icu.md.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jre-1.8\bin\lcms.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Core.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_ko.properties.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeClickToRun.exe.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\rtscom.dll.mui.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_OEM_Perp-ul-oob.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Trial-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\WindowsBase.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Client.Core.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Drawing.Common.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jre-1.8\bin\WindowsAccessBridge-64.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Century Gothic.xml.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_Subscription-pl.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp3-pl.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\POWERMAPCLASSIFICATION.DLL.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OCSCLIENTWIN32.DLL.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-utility-l1-1-0.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\ExitUnregister.odt.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\Microsoft.DataStreamer.Excel.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-core-file-l2-1-0.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\System\msadc\en-US\msdaremr.dll.mui.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Web.HttpUtility.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationCore.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\WidevineCdm\_platform_specific\win_x64\widevinecdm.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\mshwLatin.dll.mui.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\Microsoft.VisualBasic.Forms.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.Primitives.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\Microsoft.VisualBasic.Forms.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_LinkNoDrop32x32.gif.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-locale-l1-1-0.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\C2R64.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.ServicePoint.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\UIAutomationClientSideProviders.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\System\ado\es-ES\msader15.dll.mui.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\msquic.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Transactions.Local.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-console-l1-1-0.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jp2iexp.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-pl.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\7-Zip\7zFM.exe.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.uk-ua.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Trial2-ppd.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\nl.pak.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-phn.xrm-ms.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ServiceProcess.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\System.Windows.Controls.Ribbon.resources.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.CodeDom.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Java\jre-1.8\bin\nio.dll.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Milk Glass.eftx.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.proofing.msi.16.en-us.xml.tmp	91af6d4c720287ff4689db2d1a000310N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\hwrusash.dat.tmp	91af6d4c720287ff4689db2d1a000310N.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	91af6d4c720287ff4689db2d1a000310N.exe

C:\Users\Admin\AppData\Local\Temp\91af6d4c720287ff4689db2d1a000310N.exe
"C:\Users\Admin\AppData\Local\Temp\91af6d4c720287ff4689db2d1a000310N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3612

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-1-5-21-4182098368-2521458979-3782681353-1000\desktop.ini.tmp

Filesize
31KB

MD5
7b3d5b6003d44b044847c42d71ee3726

SHA1
0e32b86b6389279f1d141815ce3c263227a99b75

SHA256
22e551a873b0357eb0b0fd169485c80a2d4f32bd5c45705104b9ecb6dd3b585e

SHA512
97be0ff01211d98279c08576625f4a0fe4fb58bd91ab3d9687dd6d29166ad9b98edeb1c003a81703dfbfec8b6f9ea196efbdc11d2c9a093c88984f30cda20740

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

Filesize
130KB

MD5
daf2121846911abe2ed91cc07c71762b

SHA1
52d416c4ad8f07228de8ee74baf5193ecaf5d724

SHA256
70b6f1c5c7cf73cbe3180a078817379c7df10e57e8bcc90fa6ffc300a93328c3

SHA512
70f98ebf11c59cf2db5baee0e5f5c1c83596a25f866e7c716f9f2e48b8a70475ffe5fa303af28f195de4dcfa1f1c51bf870a801cad023f1117184398c9e71110

Download Submit
memory/3612-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3612-860-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download