e66756e7fa18d639f3bef65ffab53f234dddaf7bdc6184751d18f996e1b387f4

Analysis

max time kernel
119s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 04:41

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General

Target

c66f6003c373a6307a1f7b220da181c0N.exe
Size

1.3MB
MD5

c66f6003c373a6307a1f7b220da181c0
SHA1

89157bfe0dae14c8d24746a0252416086062566c
SHA256

e66756e7fa18d639f3bef65ffab53f234dddaf7bdc6184751d18f996e1b387f4
SHA512

dd95818411488cbe8ac82fe0d3c5585ebfc80f8f408b3b960a9f81d58e3781aaf4f4786eb446190486be1185528e184185a642590ee94a5a7bf4dc1f2c783935
SSDEEP

3072:fny1tEevefo5+sa/rcCRyFNSH/kHZHGvAbFFcypg/qdeyhoKn/Ad0yJQe:KbE8cqSH/kHZHGvARndvMJX

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (1615) 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/1648-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00080000000234dd-2.dat	upx
behavioral2/files/0x0004000000022922-6.dat	upx
behavioral2/memory/1648-338-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\Ole DB\en-US\sqlxmlx.rll.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.NETCore.App.runtimeconfig.json.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Input.Manipulations.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\msix.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Principal.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ko-kr.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Formats.Asn1.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\System.Windows.Controls.Ribbon.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\WindowsBase.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVManifest.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\PresentationUI.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ms-my.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\tipresx.dll.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Windows.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.EventBasedAsync.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\wpfgfx_cor3.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppvIsvSubsystems64.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Extensions.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.Parallel.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\7-Zip\7z.sfx.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\nb-NO\tipresx.dll.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Csp.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\PresentationCore.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Forms.Design.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsrus.xml.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Collections.Specialized.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Forms.Primitives.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\UIAutomationClient.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.DirectoryServices.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\IpsMigrationPlugin.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.VisualBasic.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.FileVersionInfo.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ServiceWatcherSchedule.xml.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-timezone-l1-1-0.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\tabskb.dll.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemDrawing.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\PresentationUI.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.cs-cz.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\UIAutomationTypes.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\Microsoft.VisualBasic.Forms.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\ReachFramework.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Emit.ILGeneration.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\InputPersonalization.exe.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\osknumpadbase.xml.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\MSInfo\en-US\msinfo32.exe.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.Uri.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\System.Windows.Input.Manipulations.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.th-th.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.Algorithms.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Private.Xml.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework-SystemXmlLinq.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Xaml.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\UIAutomationTypes.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-sysinfo-l1-1-0.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\UIAutomationProvider.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\it-IT\TabTip.exe.mui.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Configuration.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Forms.Design.resources.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.InteropServices.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ComponentModel.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base_kor.xml.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.FileSystem.AccessControl.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.Pipes.dll.tmp	c66f6003c373a6307a1f7b220da181c0N.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	c66f6003c373a6307a1f7b220da181c0N.exe

C:\Users\Admin\AppData\Local\Temp\c66f6003c373a6307a1f7b220da181c0N.exe
"C:\Users\Admin\AppData\Local\Temp\c66f6003c373a6307a1f7b220da181c0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1648

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-1-5-21-355097885-2402257403-2971294179-1000\desktop.ini.tmp

Filesize
1.3MB

MD5
0ce0674a297f8eb7221f2c8fa16d2e4e

SHA1
ca920dd1c5ff7ab659be9a60b2b99106187d1389

SHA256
462574eb0960e041691bb808ec89770a0e56fca009ab69dbeed9fe0c9a21727c

SHA512
8dd17949d0b3328141717d22d27eac28a7adca47fe1f2404cabb1cc20d36dc90bf62e985919f250bf85fa14093645e2578a9bad9cd0c5ce50fe3ee3e46976f07

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

Filesize
1.4MB

MD5
c8a4e667ace0d2563eee1b93395bb52d

SHA1
b0f0a7ad22b00f8ad1ad39aa9ee4f1ca921f0a43

SHA256
4194c59d408af0eaeac2ea5bc1ec09304bf5161a3bdb87b771f2ff53d34b6500

SHA512
d85fe992e2d5917c7780079316a74c81b065790f72adfcd4272fd242c314858b3a74c941b16541e7ae94718764b2bc1de0cadbbbf2ead98391c96fd33eb719c3

Download Submit
memory/1648-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1648-338-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download