b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f

Analysis

max time kernel
149s
max time network
93s
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, 01:45

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General

Target

b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
Size

124KB
MD5

0b146056345e54ab504490e4a07fda38
SHA1

d967fe72a144c54e2edc3e888aa0f6bd180ff412
SHA256

b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f
SHA512

6ea3942b52d231df3aaf64ed5f495d9a3e5bc87782e822aa604c24e054ce4af0edefccec694237db7df5bd828a8349386100f203b739db07a4b6e81bdb48cb9f
SSDEEP

1536:V7Zf/FAxTWtnMdyGdy4AnAJYq8YqiXjTWUnMdyGdy4AnAJYq8YqiXz+Q:fnyGnpAeklXRnpAeklXn

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4675) 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/4488-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000c000000023b27-2.dat	upx
behavioral2/files/0x0014000000022905-6.dat	upx
behavioral2/memory/4488-654-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Principal.Windows.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationFramework-SystemXmlLinq.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\cldr.md.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-synch-l1-2-0.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019XC2RVL_MAKC2R-ul-phn.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Library\SOLVER\SOLVER.XLAM.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-black_scale-140.png.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Accessibility.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CHAKRACORE.DLL.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Forms.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT.HXS.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\System.Windows.Forms.Design.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-console-l1-1-0.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\limited\US_export_policy.jar.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mip_core.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.Serialization.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\awt.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jli.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-ul-phn.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_MAK-ul-phn.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.Extensions.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\java.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Corbel.xml.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_OEM_Perp-ul-phn.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdXC2RVL_MAKC2R-ppd.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.DataContractSerialization.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.sv-se.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\XLINTL32.DLL.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Controls.Ribbon.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\System\Ole DB\it-IT\sqloledb.rll.mui.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\System\Ole DB\de-DE\sqloledb.rll.mui.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.RegularExpressions.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.Aero.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\Microsoft.VisualBasic.Forms.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\System.Windows.Forms.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-ul-oob.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\offreg.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Loader.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\TPN.txt.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-CA\tipresx.dll.mui.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\Microsoft.VisualBasic.Forms.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\UIAutomationClientSideProviders.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOCR.DLL.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Input.Manipulations.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Forms.Design.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription3-ppd.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProDemoR_BypassTrial180-ul-oob.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.scale-180.png.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipshrv.xml.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\System\msadc\msadco.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Common Files\System\msadc\msdaprst.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Input.Manipulations.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-ppd.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-oob.xrm-ms.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Modeler.UI.rll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\7-Zip\Lang\cs.txt.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Windows.Input.Manipulations.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Xaml.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\WindowsBase.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\PresentationFramework.resources.dll.tmp	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.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	b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe

C:\Users\Admin\AppData\Local\Temp\b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe
"C:\Users\Admin\AppData\Local\Temp\b157a55c06711c5875181566a06b728049af4a4ac10454e77d4d251a66a2a82f.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4488

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-1-5-21-2045521122-590294423-3465680274-1000\desktop.ini.tmp

Filesize
125KB

MD5
01b8a5268ee8d028e83fd9b288f8d60b

SHA1
15ed4e78c66e791ea4879226b33973cd0b54b853

SHA256
30a2da27cc6cfe026a899605f55c6dc092e1c1767ad001bbecfaf85640a74f9c

SHA512
a6041ad0314dec603956ea55a4d827ec1fb7625e7d89eef8b902fa68dc5619a87fd673ce40e746b77c091d7262c89c53c646d5209adba0ca6b815bdd9cc0af5e

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

Filesize
223KB

MD5
069df337503753500765b9828024aea4

SHA1
cb4b8c2996474dd1bfa41635be9d8e2e742d909a

SHA256
5225dc56ee400c1f6b447fc73a285e2c9a6621645d81945593538ad22dc80af4

SHA512
ab1b9013572d7fdf687468f511e83eb806d2c008b936b2db3cffc2177c984e5d0177523e61bc5e2cc1c06d1bc2e59f7e0cdb3b0568c4464622f2adbf7110d85f

Download Submit
memory/4488-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4488-654-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download