61026c76fa054945bd426001198bcd7d6cb7554f3655e8bfc98336e52edb1f43

Analysis

max time kernel
120s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
29/08/2024, 11:58

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General

Target

a2fe6e88c55d8716690809ea3ad9f2c0N.exe
Size

65KB
MD5

a2fe6e88c55d8716690809ea3ad9f2c0
SHA1

8c6afff531a528fd3bff614cb5f2422893f51682
SHA256

61026c76fa054945bd426001198bcd7d6cb7554f3655e8bfc98336e52edb1f43
SHA512

d71cf41e7d2cc3b2c5e30f23edfb4c12fd7ecc9a84f6ce46e21bb80504e32f26dae4758645850697b21f17238f0676f4a2e7371396b8825aa290b8a7d57f10ec
SSDEEP

1536:CTWn1++PJHJXA/OsIZfzc3/Q8IZTkb/bCp3:KQSo7Zgrep3

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4647) 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/3892-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00080000000234fa-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/3892-870-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jre-1.8\lib\cmm\PYCC.pf.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-ul-phn.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_Subscription-ppd.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\WindowsFormsIntegration.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jmc.txt.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Collections.Immutable.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\ReachFramework.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_Retail-ul-phn.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CSS7DATA000C.DLL.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pl-pl.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.Parallel.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-multibyte-l1-1-0.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-ul-oob.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Security.Cryptography.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\WindowsFormsIntegration.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\ssv.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.XPath.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\System.Xaml.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_Subscription-ul-oob.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.ReportingServices.AdHoc.Excel.Client.Entry.Interfaces.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.X509Certificates.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\WindowsBase.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\sound.properties.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_SubTrial-pl.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_SubTrial-pl.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusR_SubTrial2-ppd.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\7-Zip\Lang\eu.txt.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\Microsoft.Win32.Registry.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\Informix.xsl.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\PresentationFramework.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-conio-l1-1-0.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\include\win32\jni_md.h.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\zipfs.jar.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\GRAPH.ICO.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemData.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-ppd.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.contrast-white_scale-100.png.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tabskb.dll.mui.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\javafx_font.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\UIAutomationTypes.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OutlookVL_KMS_Client-ul.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\7-Zip\Lang\sl.txt.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Windows.Forms.Primitives.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.NETCore.App.deps.json.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\jcup.md.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ppd.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\pt-BR\tipresx.dll.mui.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msaddsr.dll.mui.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Drawing.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processthreads-l1-1-0.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProVL_KMS_Client-ppd.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\7-Zip\Lang\uz.txt.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Globalization.Calendars.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\cmm\GRAY.pf.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power Map Excel Add-in\VISUALIZATIONGRAPHICS.DLL.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-140.png.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.TextWriterTraceListener.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\notification_helper.exe.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\images\cursors\win32_MoveNoDrop32x32.gif.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardMSDNR_Retail-ul-phn.xrm-ms.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ja\UIAutomationTypes.resources.dll.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jdk-1.8\include\jdwpTransport.h.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\cmm\LINEAR_RGB.pf.tmp	a2fe6e88c55d8716690809ea3ad9f2c0N.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	a2fe6e88c55d8716690809ea3ad9f2c0N.exe

C:\Users\Admin\AppData\Local\Temp\a2fe6e88c55d8716690809ea3ad9f2c0N.exe
"C:\Users\Admin\AppData\Local\Temp\a2fe6e88c55d8716690809ea3ad9f2c0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3892

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-1-5-21-4182098368-2521458979-3782681353-1000\desktop.ini.tmp

Filesize
66KB

MD5
5a533bd46bc75046f5370c762afe4fe6

SHA1
83a9ea3333567d50bf106fdb3d40970b1cbc2056

SHA256
5049df5df10eb820934e4889b522973b4dcfedddd3c54ff957c6f9208fa3fb75

SHA512
fd45ebe39f16f2f241ba6c549847cb014a7807051a40ab10ca8d3333c5661492b59157441f4c26de9e15170d9a1c32b9562faabae41898956830df5f0bb2b84c

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

Filesize
164KB

MD5
19bfdfc727b5b01d587e5501656efc21

SHA1
43a5c6912392dbbfe33f106e917310018b8ce52a

SHA256
bbf10a7fc2c90243df0867c51fcf56639797d89a44bbc2c9949d69ee3f26f0e0

SHA512
7b95a521fd10b81c9eed476c3dd0f2009660c4b736365ea88dec172293916e17b6aa425b81bd976c9242d038aa84974e4b2dc0e056b1ea1ce42882eb6a9ed849

Download Submit
memory/3892-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3892-870-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download