bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20

Analysis

max time kernel
150s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/10/2024, 02:20

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General

Target

bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
Size

40KB
MD5

59e149ef85cf8af4cda38c60fec154c7
SHA1

7a13534a8772a6f6993cc1faa80a175f25572306
SHA256

bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20
SHA512

5b76f378f60d384b4a4e16cf542b8e500aa23811de7554d9e583e92ff501a7a11f84c01b6de4194397cbe3d4de0faed3cb984c54d2cf01e754521b95235f4433
SSDEEP

768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATBHfBo8o3POTaGTa7:CTW7JJZENTBHfiPOTNTG

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (5199) 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/4188-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000a000000023c07-2.dat	upx
behavioral2/files/0x00040000000228fe-6.dat	upx
behavioral2/memory/4188-784-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest2-ul-oob.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_MAK-ul-oob.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.scale-180.png.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN048.XML.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\VVIEWDWG.DLL.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\7-Zip\Lang\bg.txt.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Common Files\System\msadc\msadds.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Internet Explorer\en-US\ieinstal.exe.mui.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription3-pl.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ul-phn.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PROOF\MSGR8EN.LEX.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\UIAutomationProvider.resources.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaBrightItalic.ttf.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_ViewOnly_ZeroGrace-ppd.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\7-Zip\Lang\th.txt.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\Classic.dotx.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.HostIntegration.Connectors.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\wordvisi.ttf.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\MavInject32.exe.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationProvider.resources.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Retail-ul-oob.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\libxml2.md.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Grace-ppd.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_OEM_Perp-ppd.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\POWERMAPCLASSIFICATION.DLL.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Templates\1033\ONENOTE\16\Stationery\BUSINESS.ONE.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.Emit.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\PresentationUI.resources.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\UIAutomationClientSideProviders.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected]	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\XML2WORD.XSL.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-localization-l1-2-0.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcR_OEM_Perp-pl.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\IEEE2006OfficeOnline.xsl.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.resources.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_SubTrial-pl.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected]	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsnld.xml.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.Compression.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\WindowsBase.resources.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_KMS_Client-ppd.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Trial-ppd.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Java\jdk-1.8\include\jvmticmlr.h.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT-Rockwell.xml.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_MAK-ul-oob.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019MSDNR_Retail-ul-phn.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\el-GR\tipresx.dll.mui.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\lv-LV\tipresx.dll.mui.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Windows.Controls.Ribbon.resources.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.Excel.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\concrt140.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\rsod\officemuiset.msi.16.en-us.tree.dat.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.DCF.DCF.x-none.msi.16.x-none.xml.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Retail-ul-oob.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProXC2RVL_MAKC2R-ppd.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Grace-ul-oob.xrm-ms.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OsfTaskengine.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\[email protected]	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemData.dll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Java\jdk-1.8\jmc.txt.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Excel.Excel.x-none.msi.16.x-none.xml.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Resources\1033\PowerPivotExcelClientAddIn.rll.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-black_scale-180.png.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN065.XML.tmp	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.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	bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe

C:\Users\Admin\AppData\Local\Temp\bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe
"C:\Users\Admin\AppData\Local\Temp\bfefbfca4f605dee9a3b0c770186d082264fdd58b26fd995d275cba907560f20.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4188

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-1-5-21-3350944739-639801879-157714471-1000\desktop.ini.tmp

Filesize
40KB

MD5
88797df8563bdca05280e7f054ba73ed

SHA1
273ec5a5fa4dd2376860162cf4ae9b97453c1745

SHA256
c74d3523f125b21357c17e076c05c3114cf93428aef1c7587682f8de09d2de15

SHA512
99cf357c37506c59a572d4cb322664506ace8eb18a98d56f51eb278392fd1eff1574d5abf5b5f5dbd274599147e3b0eeb2058889010ac32542a37f376f45a056

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

Filesize
139KB

MD5
f520e840b342d9d85b41c2b5c35a6f8a

SHA1
02872f6f2530ff900ab2288744ff3c1232a2158f

SHA256
c3f0318cd10d2da2663f341e66aae7212d13cd201898c5d687736e84ed6f94cd

SHA512
2f196aa4d6582d30f08816c1cee9faab750f66ffef3267e5b3d85f086ab5eb9f7e06e3d24d3ae3cb776ea9a301509dc4a01ffd0d0e6640de187fd47f42816766

Download Submit
memory/4188-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4188-784-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download