bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88f

Analysis

max time kernel
120s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/09/2024, 13:47

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General

Target

bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
Size

30KB
MD5

8f3353c1f4af04f5fe6ff6488d726470
SHA1

3268118e5dfbad4d130426385003a731f120c931
SHA256

bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88f
SHA512

2c9edab430087c91d394d7b6d3a1822812a02c4bc18e5245c1004f09fc1ea72b5d29b3cde88b42af4abbb14791639d5924d151593997c45c10918272d4d28a69
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcI9ZJ3Rl:CTW7JJ7TzJT

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4652) 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/3164-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00090000000233ae-2.dat	upx
behavioral2/files/0x00040000000228de-6.dat	upx
behavioral2/memory/3164-928-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-black_scale-100.png.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\ShapeCollector.exe.mui.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTrial-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ExcelCtxUICellLayoutModel.bin.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial3-ppd.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Common Files\System\ado\fr-FR\msader15.dll.mui.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PenImc_cor3.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest2-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationClientSideProviders.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Specialized.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.Debug.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Loader.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-console-l1-1-0.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\bcel.md.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_OEM_Perp-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\cpprestsdk.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Forms.Primitives.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\zh-TW.pak.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_SubTest-ppd.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.scale-180.png.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Common Files\System\msadc\en-US\msdaremr.dll.mui.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\javaws.exe.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\zipfs.jar.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Forms.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardMSDNR_Retail-ul-oob.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Calibri.xml.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Retail-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\7-Zip\Lang\fa.txt.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Common Files\System\msadc\msadds.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\PresentationCore.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\offsym.ttf.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Common Files\System\ado\adojavas.inc.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-filesystem-l1-1-0.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.Win32.Registry.AccessControl.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProDemoR_BypassTrial180-ul-oob.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Custom.propdesc.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationUI.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_OEM_Perp-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\cmm\GRAY.pf.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ppd.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_Subscription-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Drawing.Primitives.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\UIAutomationTypes.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jre-1.8\bin\jsound.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial.xml.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\WindowsBase.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\UIAutomationClientSideProviders.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\javaws.policy.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Trial-ul-oob.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Grace-ppd.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Sort\AUTHOR.XSL.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\ISO690.XSL.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Encodings.Web.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationProvider.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\et.pak.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-00E2-0409-1000-0000000FF1CE.xml.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteVL_MAK-pl.xrm-ms.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Interop.MSDASC.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.Primitives.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Controls.Ribbon.resources.dll.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
File created	C:\Program Files\dotnet\swidtag\Microsoft Windows Desktop Runtime - 7.0.16 (x64).swidtag.tmp	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.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	bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe

C:\Users\Admin\AppData\Local\Temp\bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe
"C:\Users\Admin\AppData\Local\Temp\bc7bdc8e51ec4d42661d5e268e4f39856d8c27600d5a4694da173e713fe2c88fN.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3164

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-1-5-21-2718105630-359604950-2820636825-1000\desktop.ini.tmp

Filesize
30KB

MD5
b56a8f703c47850301b739d999410aac

SHA1
ba8953db1d3ad2fd9daf76d37f9b122a2cb68187

SHA256
0e6b35323db7957c313cf912e1fd32b4ab7d4c85bc27ecb8c2d443be9800b91b

SHA512
e8af486e1eadc1ae981b05e671b0c669f735a0ff3fc86e2a88b6c7a87b764a9ec55dd776805cd60915c34e12cee50e3d7e53c8e03f3aaa4b8fa5202250bb30da

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

Filesize
129KB

MD5
17f464cccd662a5fd7c414e1ab85fcff

SHA1
3bf517176e8670e8894de083f02294aa1e5904d5

SHA256
bfff4a3a736d146c6e6d7a7d2e5f5edd0eac79971814cb31fd4672e8d6dbc94f

SHA512
7497223d2715a9d17c822e5abf9a9c1b095bcc550775f8320ef08334672c40c6fc640fc94c7799ca33dda5e84f88c1af57c64129b39a332f4e4f47c574a9c16c

Download Submit
memory/3164-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3164-928-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download