0b676ac46a06d6338569a4b4d14d2b4c8ee749f6a9404d005a1039e67c493dba

Analysis

max time kernel
120s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 11:53

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General

Target

434cdf99477df6e9efc4a9afe67ac8c0N.exe
Size

38KB
MD5

434cdf99477df6e9efc4a9afe67ac8c0
SHA1

0ef7c91c3acb540a7d2a3339a0e550ac147679ab
SHA256

0b676ac46a06d6338569a4b4d14d2b4c8ee749f6a9404d005a1039e67c493dba
SHA512

f0fcb648878e9281542a7d247d748c15fd0b8f0881ab4c0ae622e7a1af39524896bf5220c7f78729f556eea240bf17e7305254b45ea3ce21df36895ceb1254e7
SSDEEP

768:kBT37CPKKdJJTU3U2lRtJfOLP7PNcAPJacAPJP:CTW7JJTU3UytJfOL7m

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4684) 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/4488-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000a00000002342c-2.dat	upx
behavioral2/files/0x000f000000022902-6.dat	upx
behavioral2/memory/4488-918-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\UIAutomationProvider.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Windows.Controls.Ribbon.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_Trial-ul-oob.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Immutable.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\.version.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\System.Xaml.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\wsimport.exe.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Century Gothic.xml.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\sk\msipc.dll.mui.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.vi-vn.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-datetime-l1-1-0.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationProvider.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Retail-ul-phn.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Retail-ul-oob.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\TellMeWord.nrr.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\i640.hash.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\sspi_bridge.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\DataServices\DESKTOP.INI.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ODBC Drivers\Salesforce\lib\sfodbc.did.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\libffi.md.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTrial-ul-oob.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\excelcnvpxy.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\ReachFramework.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019R_Trial-ppd.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-handle-l1-1-0.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\am.pak.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\cmm\CIEXYZ.pf.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\public_suffix_list.dat.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-root-bridge-test.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-environment-l1-1-0.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\UIAutomationClient.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT-Rockwell.xml.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-pl.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CSS7DATA000A.DLL.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Library\Analysis\ANALYS32.XLL.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.Parallel.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaBrightRegular.ttf.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001F-0C0A-1000-0000000FF1CE.xml.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp-ul-phn.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_MAKC2R-ul-phn.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\GB.XSL.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\javafx\jpeg_fx.md.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp6-ul-oob.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Data.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\deploy.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientARMRefer_eula.txt.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ONGuide.onepkg.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\Microsoft.VisualBasic.Forms.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-filesystem-l1-1-0.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-locale-l1-1-0.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.DCF.DCF.x-none.msi.16.x-none.xml.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_Grace-ppd.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Common Files\System\en-US\wab32res.dll.mui.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-fibers-l1-1-0.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\WindowsFormsIntegration.resources.dll.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\fr.pak.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\dom.md.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\cmm\CIEXYZ.pf.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Grace-ul-oob.xrm-ms.tmp	434cdf99477df6e9efc4a9afe67ac8c0N.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	434cdf99477df6e9efc4a9afe67ac8c0N.exe

C:\Users\Admin\AppData\Local\Temp\434cdf99477df6e9efc4a9afe67ac8c0N.exe
"C:\Users\Admin\AppData\Local\Temp\434cdf99477df6e9efc4a9afe67ac8c0N.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-1-5-21-945322488-2060912225-3527527000-1000\desktop.ini.tmp

Filesize
39KB

MD5
7aecfda1cec24f999cbdee13d079fe24

SHA1
ea08f968e4405ca94e3b1772022a90474740725d

SHA256
41485cd3964db77aef7988b628bd01b731c814603a05169679e9eea39275ad34

SHA512
7caaf706f7469a6037e5ea296d44d5b9028b7f6d777265d723e81d2a7430da5b4b29f89ec5008ece82eff8d1a8d81adde2bcb93fe2a18e4fa8f05d4db33c2f9f

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

Filesize
137KB

MD5
53313a2a15a719fe35753baf1856358a

SHA1
ba70d0bf496fb9010aaf49dd1113c7d5e5df65b0

SHA256
b45c12020053a3d12fd22a7d5e9eea8150a02364c64db2f5c9966c43b8be4c35

SHA512
bac35d630c02a0a94aca052ca33f0b70eae7eccefd694dbbed5a9554020d7d05aef023c1e87fbc7caec3e62a6060dc2b64bbc31732248c17e60f6141adf06648

Download Submit
memory/4488-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4488-918-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download