efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97

Analysis

max time kernel
120s
max time network
98s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
13-10-2024 18:07

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General

Target

efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
Size

64KB
MD5

ce275160040b8eadd642981075d8b3b0
SHA1

75530bc1fe9b1154bc121b2efa9be4ead9eae0c8
SHA256

efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97
SHA512

66b644e5d273556ab35a65edb5be96a2a533dcbb68d9d999869eb7671c9c40d23e4e05157e79bad1a5089b8f73334f58d063924c7d82cbae78317d66120a29a0
SSDEEP

768:kBT37CPKKIm0CAbLg++PJHJzIWD+dVdCYgck5sIZFlzc3/Sg2aDM9uA9DM9uAFI4:CTWn1++PJHJXA/OsIZfzc3/Q8IZTO73

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4652) 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/1576-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000b000000023b87-2.dat	upx
behavioral2/files/0x000600000001e5c2-6.dat	upx
behavioral2/memory/1576-783-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\7-Zip\Lang\pt.txt.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Sockets.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.Parallel.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\zlib.md.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Century Gothic-Palatino Linotype.xml.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.officemuiset.msi.16.en-us.xml.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mscss7en.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-file-l1-2-0.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Common Files\System\it-IT\wab32res.dll.mui.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\PresentationUI.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial5-ul-oob.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\MicrosoftDataStreamerforExcel.dll.config.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\7-Zip\Lang\da.txt.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\.version.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\System.Windows.Forms.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTest-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsplk.xml.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_Retail-ul-phn.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp3-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\EXCEL_K_COL.HXK.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ul-phn.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_SubTrial-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.OpenSsl.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemData.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\servertool.exe.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_OEM_Perp-ul-oob.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WORD_WHATSNEW.XML.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\APASixthEditionOfficeOnline.xsl.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\System.Windows.Forms.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\pt-BR.pak.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp3-ul-phn.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Retail-ul-phn.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Trial-ul-oob.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\PRIVATE_ODBC32.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jre-1.8\lib\ext\jaccess.jar.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\policy\limited\local_policy.jar.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-phn.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\rmic.exe.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_SubTrial-ul-oob.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.XLHost.Modeler.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.scale-80.png.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Web.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationFramework.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Spatial.NetFX35.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.ConnectionUI.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\System.Windows.Forms.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\PresentationFramework.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Retail-ul-oob.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_OEM_Perp-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Common.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.el-gr.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\host\fxr\8.0.2\hostfxr.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.Compression.ZipFile.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Numerics.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\xalan.md.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_KMS_Client-ul-oob.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Trial-pl.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-ppd.xrm-ms.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Globalization.Extensions.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\cs\Microsoft.VisualBasic.Forms.resources.dll.tmp	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.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	efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe

C:\Users\Admin\AppData\Local\Temp\efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe
"C:\Users\Admin\AppData\Local\Temp\efe1503d0b70cc19eacbe9171e9ad8456b3d38c33f1f006d975f050b9b918c97N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1576

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-1-5-21-4050598569-1597076380-177084960-1000\desktop.ini.tmp

Filesize
65KB

MD5
21acd5a036e330a8d13d6f7c5f7ae640

SHA1
224b9f047152c273d68c0c148e410663347db3c7

SHA256
19724aa0d7f189ef7abc69eed231af26c949320dc19faf35559a0542eb921aed

SHA512
63c1b19b280ec9709f0d5d14ed970b1d65de0899ce8ee1718623779e229c87c98b8cd312620d372b6c1d6ee0aa29c1242a32d48eb5c25ae8c53e7b243d730a44

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

Filesize
163KB

MD5
137c6fccc11437625952e2213ce01ee8

SHA1
8e9e9dc0aa8bde9c8836e504d64a72fb28cdabb2

SHA256
5cf284f7cd88f060a7936be17275e17d7b44c140b6cec5e83f76bed3f49c53b7

SHA512
aab3f5880ef73698a8bdccee27ded978c1b944b207764e14ed992f8eea75bc568cf458bc5fefbb301c181240516688b0efbee3ea0fae49d6e45a05740758ac6d

Download Submit
memory/1576-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1576-783-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download