5b8eb928ae32abdbce4f73f81ecffa35f9ff43fca6bac93552133106c47effc8

Analysis

max time kernel
121s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
27/07/2024, 01:09

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General

Target

77ecbf499d84691d6433e491097a0fc0N.exe
Size

41KB
MD5

77ecbf499d84691d6433e491097a0fc0
SHA1

28644e7c6178791b5a57d283e4f8243f2fcd3cab
SHA256

5b8eb928ae32abdbce4f73f81ecffa35f9ff43fca6bac93552133106c47effc8
SHA512

f28a2f0f4df07553c357065c74ed930f47e2a0f03a044c2238958afabf7419df3b20f40e0f2be8577427b179a11e865e61a8fc01c28435c30e79169ce6463bc9
SSDEEP

768:W7BlphA7pARFbhL801VvM801VvcR2+lJtZ2+lJt9:W7ZhA7pApw03vR03vcltdt9

Score

9^/10

discovery ransomware

Malware Config

Signatures

Renames multiple (1570) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.Encoding.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\cpprestsdk.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\bg-BG\tipresx.dll.mui.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\System\msadc\es-ES\msdaremr.dll.mui.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\ReachFramework.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\UIAutomationClient.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ClientEventLogMessages.man.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Serialization.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.Primitives.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Ping.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Forms.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\UIAutomationTypes.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\UIAutomationClientSideProviders.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\PresentationCore.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Threading.Tasks.Extensions.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Compression.Brotli.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.InteropServices.JavaScript.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Loader.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Configuration.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-private-l1-1-0.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-time-l1-1-0.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\RepoMan.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.Compression.FileSystem.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Controls.Ribbon.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\UIAutomationClientSideProviders.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Handles.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.WebHeaderCollection.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationClient.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Input.Manipulations.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-ES\InputPersonalization.exe.mui.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\it-IT\tipresx.dll.mui.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Crashpad\settings.dat.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.Expressions.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.ReaderWriter.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\UIAutomationClient.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\ReachFramework.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Windows.Input.Manipulations.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvStreamingManager.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ja-JP\tabskb.dll.mui.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Web.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\WindowsBase.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.VisualBasic.Core.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Reflection.Extensions.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\microsoft shared\VSTO\10.0\VSTOLoader.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\System\ado\msado27.tlb.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\it-IT\sqlxmlx.rll.mui.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Encoding.CodePages.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.XPath.XDocument.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\D3DCompiler_47_cor3.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\PresentationCore.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Xml.Linq.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\netstandard.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\System.Windows.Forms.Primitives.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.ServicePoint.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\Common Files\System\msadc\msadcer.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-errorhandling-l1-1-0.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.FileSystem.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-utility-l1-1-0.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Controls.Ribbon.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Console.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\WindowsBase.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\PresentationUI.resources.dll.tmp	77ecbf499d84691d6433e491097a0fc0N.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	77ecbf499d84691d6433e491097a0fc0N.exe

C:\Users\Admin\AppData\Local\Temp\77ecbf499d84691d6433e491097a0fc0N.exe
"C:\Users\Admin\AppData\Local\Temp\77ecbf499d84691d6433e491097a0fc0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2944

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-1-5-21-2636447293-1148739154-93880854-1000\desktop.ini.tmp

Filesize
41KB

MD5
1ed593a7792662bc5e38f6184f32092d

SHA1
4c2d184c645454147dbeac07f04f016e5286081b

SHA256
06a976d4565a959325a9e51b5ff1eed66a7a6283da4dc00387c11f22a21f5826

SHA512
1bf9a348e81b08a94f800f0ee2dff19606a35a7ba6372349e81dd4571bdb9866fd55f5278522527d52ae382b35ce556cbfbdb0659f98f4790747f6d36d707185

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

Filesize
140KB

MD5
089afd0f4f2bac3c4f3a1b517abda9f4

SHA1
e976babfd404f0b4a277468aee659248fc90e70d

SHA256
4b4880c722d041218d32f778a1f0e284dc27185e4408570595087b33205d55ef

SHA512
bc749b3739b82439e569916ed1268be103351516bd8b403b8d173ab0e2a1266a41dd05f8007b50f1ddd585eb103f24087451604415994512ec595623d29bfc7e

Download Submit