445a8acb64146ec6552e1e798d66c462c24bb366dddcddfdcf5f769eac9cdfc8

Analysis

max time kernel
120s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/08/2024, 00:55

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General

Target

33d0cf597a0aa322560793d30e453f70N.exe
Size

202KB
MD5

33d0cf597a0aa322560793d30e453f70
SHA1

c74807dbddc5890d02137dabacc9a7852a8f2178
SHA256

445a8acb64146ec6552e1e798d66c462c24bb366dddcddfdcf5f769eac9cdfc8
SHA512

10c5c8f1345a966300b2824b3cd3a1aa192da74a43d39aa69983db546f41cf132cbb25e09223a45a4bd442bc10b626a6f69426316a0c7cd1e6dcab9c60d07912
SSDEEP

3072:fny1bMI9KHpKHDGCLOwstyhZFChcssc56FUrgxvbSD4UQrO2lxGF:K99QpKjShcHUaS

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4157) 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/4952-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023423-2.dat	upx
behavioral2/files/0x0014000000022912-6.dat	upx
behavioral2/memory/4952-1734-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\Lang\sw.txt.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Serialization.Formatters.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\SkypeForBusinessVDI2019_eula.txt.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Windows.Controls.Ribbon.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\System.Xaml.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_MAK_AE-ul-oob.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-pl.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.IO.Compression.Brotli.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\System.Windows.Controls.Ribbon.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\UIAutomationProvider.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationClient.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\UIAutomationProvider.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-0090-0000-1000-0000000FF1CE.xml.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-fibers-l1-1-0.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.AppContext.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\glass.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTrial-pl.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-ul-oob.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_MAK-ul-oob.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Office.Interop.Excel.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.FileVersionInfo.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.IO.Packaging.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.Design.Editors.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationClientSideProviders.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\ThirdPartyNotices.txt.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-pl.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.VisualBasic.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\dtplugin\npdeployJava1.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProCO365R_Subscription-pl.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.PPT.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\centered.dotx.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Windows.Extensions.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_OEM_Perp-ppd.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\i640.hash.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msdaprsr.dll.mui.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Input.Manipulations.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jre-1.8\bin\w2k_lsa_auth.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaBrightRegular.ttf.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ul-phn.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\cpprestsdk.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Principal.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\UIAutomationTypes.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\idlj.exe.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ClientCapabilities.json.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.MemoryMappedFiles.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\trusted.libraries.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail-ul-phn.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\GRAPH.HXS.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\UIAutomationProvider.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Threading.AccessControl.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\UIAutomationTypes.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp5-ul-oob.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hant\UIAutomationTypes.resources.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription2-ppd.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.WebProxy.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.VisualBasic.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Numerics.dll.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-pl.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-pl.xrm-ms.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\es-ES\InputPersonalization.exe.mui.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\cldrdata.jar.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\webkit.md.tmp	33d0cf597a0aa322560793d30e453f70N.exe
File created	C:\Program Files\Microsoft Office\root\Client\vcruntime140.dll.tmp	33d0cf597a0aa322560793d30e453f70N.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	33d0cf597a0aa322560793d30e453f70N.exe

C:\Users\Admin\AppData\Local\Temp\33d0cf597a0aa322560793d30e453f70N.exe
"C:\Users\Admin\AppData\Local\Temp\33d0cf597a0aa322560793d30e453f70N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4952

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-1-5-21-786284298-625481688-3210388970-1000\desktop.ini.tmp

Filesize
202KB

MD5
a5d2445ac5cf03ac6cda8789860a8a4c

SHA1
cfa6a6dd4557b6ab23c0f053f7972776ca33c324

SHA256
c5e2d482dfd4e5e60d496d4b3080d1c9244b6e92cd80ff99bf79019142ef0ad8

SHA512
a622539d49cb6384c0141cbda710e99dad575163d6bcb14867da7b8927c10f70fc6519056aa2ff6fb721bc6e86b261046d2c95342328b1339994aca9a8f7b08a

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

Filesize
301KB

MD5
b93a6860d82b1c2ea0cb649b309322c0

SHA1
f892c6dc89efd4164d326fd9b4aaaf113bf32e62

SHA256
f6be1a4a5303661fb2de145f84bc996f32a8d1038ab8c2e724dc39e57d602539

SHA512
a31a033b26aa5393b0c612b9b6a6715f6176471f7e84721d66da4da665de8178db142b28cb8b2f11b267f874b73e2def77fbb0dc2ba50196b0e7521915de3960

Download Submit
memory/4952-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4952-1734-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download