a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89

Analysis

max time kernel
120s
max time network
103s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
18-09-2024 09:23

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General

Target

a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
Size

43KB
MD5

f09e3b5a2358dbd43303a27ad7e02300
SHA1

6e1d31a7e755c22c36535110f19cd4e3ef12e5fa
SHA256

a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89
SHA512

4f3ee11533b49fe33bdf0794c3a1aa596e42d3791d6b9303bc1470dba7db2cf22abaffb43a8701a4a396ffb3ae5ed7104f8d0dcab1a9eaf86d50f62cde290d58
SSDEEP

768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATBApwp133EskmKsN33EskmKs0sFJFX:CTW7JJZENTBAOIfmKJfmKjsft

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4648) 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/4836-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0009000000023463-2.dat	upx
behavioral2/files/0x0014000000022913-6.dat	upx
behavioral2/memory/4836-909-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processthreads-l1-1-1.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\release.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main.xml.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\System.Windows.Forms.Design.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework.Aero.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Extensions\external_extensions.json.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\javafx-mx.jar.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16EnterpriseVL_Bypass30-ul-oob.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-pl.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_MAK-ul-phn.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationTypes.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.scale-140.png.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\hr.pak.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001F-040C-1000-0000000FF1CE.xml.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTOCOLHANDLERINTL.DLL.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.DirectoryServices.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Drawing.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\ReachFramework.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\calendars.properties.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTrial4-ppd.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.PPT.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\7-Zip\Lang\ps.txt.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVCatalog.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\WindowsBase.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PPT_WHATSNEW.XML.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-file-l1-2-0.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\PresentationFramework.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\System.Windows.Input.Manipulations.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\amd64\jvm.cfg.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.osmmui.msi.16.en-us.xml.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp5-ul-phn.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\linesstylish.dotx.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemDrawing.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\UIAutomationClient.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\uk-UA\ShapeCollector.exe.mui.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\System.Windows.Forms.Primitives.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Trial-ul-oob.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\tabskb.dll.mui.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsel.xml.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ComponentModel.Primitives.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ppd.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Retail-pl.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-white_scale-180.png.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\it-IT\InkObj.dll.mui.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-stdio-l1-1-0.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-localization-l1-2-0.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.contrast-black_scale-140.png.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.RegularExpressions.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\System.Xaml.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalDemoR_BypassTrial180-ul-oob.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ul-phn.xrm-ms.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Library\Analysis\PROCDB.XLAM.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Principal.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.CSharp.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\UIAutomationClient.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\UIAutomationClient.resources.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-console-l1-1-0.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\jfxrt.jar.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\xmlresolver.md.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-file-l1-2-0.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Transactions.dll.tmp	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.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	a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe

C:\Users\Admin\AppData\Local\Temp\a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe
"C:\Users\Admin\AppData\Local\Temp\a4a6df937f338b12c982dfa939c3f2404623f3b137d73fec0da54e1793e36d89N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4836

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-1-5-21-656926755-4116854191-210765258-1000\desktop.ini.tmp

Filesize
43KB

MD5
4a54f253eecbd479353c0846ce72b91b

SHA1
d698e30e0e8b71c1fd0700c54df3fd790d49153c

SHA256
3e9d56b94019b1238f126b62777265d967d948922173ba630de7e266a53dab01

SHA512
46fba43077c36c9cd971774939ff0e82224dbfeab4390ad6ec093e2bdf1fc19d8364e86bdd3ec23f29f636bf0b385f039162af5b4a7b9b369951719ccb075523

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

Filesize
142KB

MD5
886c8a42dd4c8a76a0b1a464b42db8a7

SHA1
6ea79ed5abdbf54e749637597b6ae8d6abc38a58

SHA256
03ba17e9f24bf4b2ab012d0a59ac6c36888be792a012588eb7ebf026fcf227dc

SHA512
e30eaa9946a073fa23a98380489f17d29ed0744b3fd2708fec8f16bd30a21ad46fc8c97c18db782b84ad8f4e68109970d0c0cb27381abbd569410f51dbc26bb5

Download Submit
memory/4836-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4836-909-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download