b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f

Analysis

max time kernel
150s
max time network
105s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
02/09/2024, 02:49

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General

Target

b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
Size

120KB
MD5

0264d9648f481055329e2f4d99e68e7a
SHA1

333fe3620b0335c8a796d9e5bc0d50b8e8325dd1
SHA256

b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f
SHA512

5bcea47bfe0cf2a666f75e6f71942d553e338f73b8f272fcc31e995f674f5f20b9f3f2ceb829bc5ea3f80844d781704e3673345c63634ee58934c6c308504bad
SSDEEP

1536:V7Zf/FAxTWgGpG8n2ryruqjTWJGpG8n2ryruqo:fnyKp3nAqXp3nAqo

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4864) 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/808-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233eb-2.dat	upx
behavioral2/files/0x0004000000022933-6.dat	upx
behavioral2/memory/808-850-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jre-1.8\bin\javafx_iio.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_OEM_Perp-ul-oob.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription4-ul-oob.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Trial-ppd.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationProvider.resources.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jpeg.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\mesa3d.md.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN089.XML.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\UIAutomationClientSideProviders.resources.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ServiceModel.Web.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\libffi.md.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Primitives.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.FileSystem.Watcher.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\hu.pak.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\management-agent.jar.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Glow Edge.eftx.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019MSDNR_Retail-ppd.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019MSDNR_Retail-ul-phn.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Text.Encoding.Extensions.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Extensions.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\WindowsBase.resources.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\splash_11-lic.gif.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Grace-ppd.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART10.BDR.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.WebProxy.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\cldr.md.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_Subscription-ppd.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\concrt140.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSZIP.DIC.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.IO.Packaging.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\System.Windows.Forms.Primitives.resources.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationFramework.Luna.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\jfxrt.jar.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\Microsoft.WindowsDesktop.App.deps.json.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.Expressions.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemData.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Corbel.xml.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_KMS_Automation-ul-oob.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.fi-fi.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Handles.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Threading.Tasks.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial.xml.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Trial-ul-oob.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pt-pt.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_OEM_Perp-ul-phn.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\msotelemetryintl.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\en\LocalizedStrings.xml.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\osknumpad\osknumpadbase.xml.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.Contracts.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\vcruntime140_cor3.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\System.Windows.Forms.Design.resources.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\awt.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-ul.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Trial-ppd.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.contrast-black_scale-80.png.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Common Files\System\Ole DB\es-ES\oledb32r.dll.mui.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial4-ppd.xrm-ms.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Client.Core.dll.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.contrast-white_scale-180.png.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-80.png.tmp	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.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	b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe

C:\Users\Admin\AppData\Local\Temp\b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe
"C:\Users\Admin\AppData\Local\Temp\b42b0621f8123aca9b9430ba501de1d1074346788a95c9f270ec7db63cc5e75f.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:808

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-1-5-21-1194130065-3471212556-1656947724-1000\desktop.ini.tmp

Filesize
120KB

MD5
327247ab2f011974a36c2e9432b951ef

SHA1
60fc3dba212ad95faaf7ab33f70cf193884f2fe8

SHA256
49b229203be60a85728f8a6474745f4133b63e09f6a3ebda7edc6e8a415995b5

SHA512
0b934458103b9afcb9c89ba330c80dbd86a9ca7fe348146cf91afd16fc8160be4eb1483bfe381d4d2ebb77687f8659e94b056be9232761ce87e5c739d97c87b8

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

Filesize
219KB

MD5
db7602d112e56249a13ca58171df21e7

SHA1
d7ab22ae2a67cfa90ba53c41b8ad479f8f29f9a1

SHA256
ff18a01491352d1c91fb4957613448151b3f3c61ddf0b59bd9c86e3d1d1fb95a

SHA512
e4f71d89ee37c905014c031fc5261ac50702b2a27096358fb4b188a7a9090dcd4fc45e65e3923850e6fbc090ce6aef598ffd5e35cc0030c6ef4915ee5801b36f

Download Submit
memory/808-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/808-850-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download