a3286bd588c5b7d898a259088fdb22196dcd55ef55e6371d9677ea362cc342a7

Analysis

max time kernel
120s
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
06/08/2024, 08:45

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General

Target

8531ac2d1ce705bbc2ffda84200f4fa0N.exe
Size

54KB
MD5

8531ac2d1ce705bbc2ffda84200f4fa0
SHA1

62df8dfeea0171dfb14108435604513cc01e6587
SHA256

a3286bd588c5b7d898a259088fdb22196dcd55ef55e6371d9677ea362cc342a7
SHA512

c9b2e7f537d4598e497386728798ba6fa9156c6a27cd43db9891555d0077d0e9949ed336fbc4bb089c5ac01e6f715bd17c1b802b99d493c08b1e4cdc24a552ad
SSDEEP

1536:CTWn1++PJHJXA/OsIZfzc3/Q8+g9VyjVyKQpVQpe:KQSoP+3

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4651) 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/320-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0008000000023481-2.dat	upx
behavioral2/files/0x0014000000022912-6.dat	upx
behavioral2/memory/320-1096-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.ThreadPool.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Xaml.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Internet Explorer\en-US\ieinstal.exe.mui.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019DemoR_BypassTrial180-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-namedpipe-l1-1-0.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\tzmappings.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\server\Xusage.txt.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-runtime-l1-1-0.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT-Rockwell.xml.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\MICROSOFT.DATA.RECOMMENDATION.COMMON.DLL.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Retail-ul-phn.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest5-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Common Files\System\ado\msado15.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\de\Microsoft.VisualBasic.Forms.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\System.Xaml.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\UIAutomationProvider.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\libxslt.md.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_KMS_Client_AE-ul.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_SubTest-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019R_Trial-ppd.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\XLSLICER.DLL.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\msvcp140.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_KMS_Client-ppd.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.PPT.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Net.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Windows.Controls.Ribbon.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\policytool.exe.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\tools.jar.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-phn.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ul-phn.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Excel.MDXQueryGenerator.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.zh-cn.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Xaml.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\ktab.exe.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-ppd.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProMSDNR_Retail-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Claims.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.Win32.Primitives.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\mlib_image.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\oledbvbs.inc.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.VisualBasic.Forms.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-filesystem-l1-1-0.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\javaws.jar.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Subscription3-pl.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-locale-l1-1-0.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\xmlresolver.md.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Tw Cen MT.xml.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.DCF.DCF.x-none.msi.16.x-none.xml.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp2-ul-phn.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019DemoR_BypassTrial180-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcDemoR_BypassTrial365-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\PresentationUI.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\WindowsBase.resources.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Client\C2R64.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_KMS_Client-ul-oob.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookR_Retail-pl.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msadcor.dll.mui.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Common Files\System\msadc\es-ES\msadcor.dll.mui.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\hostpolicy.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.Emit.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_Subscription-pl.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_OEM_Perp-ppd.xrm-ms.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.Immutable.dll.tmp	8531ac2d1ce705bbc2ffda84200f4fa0N.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	8531ac2d1ce705bbc2ffda84200f4fa0N.exe

C:\Users\Admin\AppData\Local\Temp\8531ac2d1ce705bbc2ffda84200f4fa0N.exe
"C:\Users\Admin\AppData\Local\Temp\8531ac2d1ce705bbc2ffda84200f4fa0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:320

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
54KB

MD5
e3b6e62e44bfb5f3edb27c875ad4ff36

SHA1
09cbb080202d74e61b8d234cebe5ff2736f792b9

SHA256
9b23a1dbc48d724225acc6cf0d8e0ba3ed4945ddc49a1ee5f96f70dd3c541696

SHA512
057243d2a0ef41ea378c2eacf908474be78140feebb261b62c3b67115fbc4cb7fbcc1dee3fa3cd45330072db19d9b9f33ab21e6a8b0ddc465c3629b6a3acb4cc

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

Filesize
153KB

MD5
26067fd0d7a22a82df2d49463fa4f3af

SHA1
e53f8e007b32942a30be2bf6247b3234f1cfda54

SHA256
b10d33aa3ee0a4553b4dfb869fc93bd91f41f98ee90d30226ec6746bf27d5dd1

SHA512
5d2863a83e2209349b26583226f2594b4aca95723b1351e34d02d97c622f5065f36e19b9e36f8c5c35acb1a8886884d93d8e2b27b8f5c17444e023529b272d47

Download Submit
memory/320-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/320-1096-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download