6621db78a44de317ec13ec074032cc9b09081c2625604dffd049e339ac0ff67c

Analysis

max time kernel
120s
max time network
93s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/09/2024, 06:45

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General

Target

c1c91dfef1dfb5509d605074408be530N.exe
Size

63KB
MD5

c1c91dfef1dfb5509d605074408be530
SHA1

dcc383ee8375d74d9feada84c9d839adddd87564
SHA256

6621db78a44de317ec13ec074032cc9b09081c2625604dffd049e339ac0ff67c
SHA512

a3bad13076d6022253e613a04651b933f77d3ec06c2871fbad8800fc91bcc621ab92fb930552ab7edd68fa6dd2418f00d343bee91f4b95794b2e461d0cf2b3ee
SSDEEP

1536:V7Zf/FAxTWoJJTU3UytJfOKI+h/YI+h/BMJevJea:fny1sI+h/YI+h/Bl

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/4400-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000900000002347c-2.dat	upx
behavioral2/files/0x0014000000022912-6.dat	upx
behavioral2/memory/4400-866-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Grace-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTrial-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\7-Zip\Lang\ca.txt.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial5-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\DRUMROLL.WAV.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\PresentationUI.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019MSDNR_Retail-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Xml.XmlSerializer.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019VL_MAK_AE-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_Grace-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Data.SapClient.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msaddsr.dll.mui.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Transactions.Local.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_OEM_Perp-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\main\base.xml.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Microsoft.Win32.SystemEvents.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Windows.Forms.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\zipfs.jar.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Grace-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\ReachFramework.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\ReachFramework.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32ww.msi.16.x-none.xml.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_Subscription-pl.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QRYINT32.DLL.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\WindowsFormsIntegration.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\System.Windows.Forms.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_KMS_ClientC2R-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Practices.Unity.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ucrtbase.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\System.Windows.Forms.Design.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\WindowsFormsIntegration.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_Subscription-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp2-ul-phn.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\7-Zip\Lang\ar.txt.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Common Files\System\msadc\en-US\msadcor.dll.mui.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationClient.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Windows.Controls.Ribbon.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\7-Zip\Lang\th.txt.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\System.Windows.Forms.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\7-Zip\7z.exe.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Retail-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerPoint.PowerPoint.x-none.msi.16.x-none.xml.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Trial-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\AdHocReportingExcelClient.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\mscordaccore.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\mscorlib.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteFreeR_Bypass-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_SubTrial-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Extensions.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\System.Xaml.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\blacklisted.certs.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial Black-Arial.xml.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremDemoR_BypassTrial365-ppd.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTest-ul-oob.xrm-ms.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\WindowsFormsIntegration.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Google\Chrome\Application\chrome.exe.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.DataIntegration.FuzzyMatchingCommon.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\ro\msipc.dll.mui.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\UIAutomationClient.resources.dll.tmp	c1c91dfef1dfb5509d605074408be530N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ml.pak.tmp	c1c91dfef1dfb5509d605074408be530N.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	c1c91dfef1dfb5509d605074408be530N.exe

C:\Users\Admin\AppData\Local\Temp\c1c91dfef1dfb5509d605074408be530N.exe
"C:\Users\Admin\AppData\Local\Temp\c1c91dfef1dfb5509d605074408be530N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4400

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
64KB

MD5
2aa9dad26a918376b7e61aea3215c42a

SHA1
2b193a193c31ee1aa5f21a269fdc6c7b504aae0d

SHA256
b091ab73342fc9b3d93bc3788f97f990895a0a344a1547fb8fa17c6447720413

SHA512
653813a3ac2830255463e68a9da7401700b99bdad09c80b92efa9fc7d8a5f6d4921e6cb56f24f1149facb881cc405bdf607a42a85704f945661078b91e7ddfef

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

Filesize
162KB

MD5
fea4c7a7b1f2afb846681b4cea1256b9

SHA1
e8c12c089d5ff93b7757f1da29fbfd33aa2bfb22

SHA256
8b69646faad7ca5b7d4b30a06dd4cafaf422692ae823095fbfcc33898e893a43

SHA512
7e4d522bc7e1e1290f0f357b18f29c302aac376eb8f9a4dc9c2411b1818c07310984e7f430bc4eb9e98797eb8451f40cd9c39407c1f9155109ca5c2ec75acb41

Download Submit
memory/4400-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4400-866-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download