303903432c7395afb17963f41268210d2e9ae24b283c37dec0155be166fb4067

Analysis

max time kernel
120s
max time network
92s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-08-2024 17:01

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General

Target

b39933dc58f0ae8d22de3e099da54cf0N.exe
Size

57KB
MD5

b39933dc58f0ae8d22de3e099da54cf0
SHA1

e44c94b01055eba1b4eab9ce005bd1f08f694640
SHA256

303903432c7395afb17963f41268210d2e9ae24b283c37dec0155be166fb4067
SHA512

c509fe86226884d16c404b8aa626e8b0bfefef5e4193e09f606b1f126a5da85a086c558b0c933dc59eae971b3cad3c72438bc872cb82a2f38c1f952bf1d08d6b
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJXGi49PU5c5FWRWzdWRWzGK5c5Mb7:V7Zf/FAxTWoJJXV6T6yb7

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/4524-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023470-2.dat	upx
behavioral2/files/0x00040000000228f4-6.dat	upx
behavioral2/memory/4524-1930-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-environment-l1-1-0.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_OEM_Perp2-pl.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\NAME.DLL.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\7-Zip\Lang\ar.txt.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Private.Xml.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\eventlog_provider.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\server\Xusage.txt.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\charsets.jar.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\ru\msipc.dll.mui.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.et-ee.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\tr\ReachFramework.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\clretwrc.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\XLLEX.DLL.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Trial-ul-oob.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pl\System.Windows.Input.Manipulations.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_CopyDrop32x32.gif.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\UIAutomationTypes.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Calibri Light-Constantia.xml.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_Trial-ppd.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mscss7es.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Quic.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Forms.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\System\ado\msader15.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\de-DE\sqloledb.rll.mui.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Cryptography.Cng.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Windows.Controls.Ribbon.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\UIAutomationClient.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\Microsoft.VisualBasic.Forms.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ko-KR\tipresx.dll.mui.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ThirdPartyNotices.MSHWLatin.txt.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationFramework-SystemDrawing.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremDemoR_BypassTrial365-ul-oob.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\cpprestsdk.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest5-pl.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\client_eula.txt.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\javafx-mx.jar.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_KMS_Client-ppd.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-stdio-l1-1-0.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\idlj.exe.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Globalization.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\de\UIAutomationTypes.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\relaxngcc.md.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifestLoc.16.en-us.xml.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_Grace-ppd.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\msoev.exe.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\7-Zip\Lang\lt.txt.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\System\msadc\de-DE\msdaremr.dll.mui.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\fr\WindowsFormsIntegration.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription2-ppd.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-black_scale-140.png.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Common Files\System\msadc\en-US\msadcor.dll.mui.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Xml.XDocument.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-environment-l1-1-0.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Arial-Times New Roman.xml.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win7.wmv.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\7-Zip\Lang\fy.txt.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\asm.md.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-runtime-l1-1-0.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\sspi_bridge.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ul-oob.xrm-ms.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-white_scale-140.png.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ru\PresentationCore.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\VisualElements\LogoCanary.png.tmp	b39933dc58f0ae8d22de3e099da54cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationTypes.resources.dll.tmp	b39933dc58f0ae8d22de3e099da54cf0N.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	b39933dc58f0ae8d22de3e099da54cf0N.exe

C:\Users\Admin\AppData\Local\Temp\b39933dc58f0ae8d22de3e099da54cf0N.exe
"C:\Users\Admin\AppData\Local\Temp\b39933dc58f0ae8d22de3e099da54cf0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4524

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-1-5-21-2392887640-1187051047-2909758433-1000\desktop.ini.tmp

Filesize
58KB

MD5
0172cfc0bac29b972e01a423d9dd1ed7

SHA1
158f9bd925ecd9703141d9ecc843a7b73e63e210

SHA256
527c7e201da9a0843b8eecec9a3d36b44bd048a7f85e6b6c8ba69135a1af2a3e

SHA512
28f8cd8c3a553410ee4c327352bb080f616569ab67f6296c8529eebbf37dd5ee5f52a6e8ed86d4d63de661e1bee6ecd0863419f914bafbc0b897e0a0beda3ccb

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

Filesize
157KB

MD5
3dc916f3560b97a56681998b2d2e3eb6

SHA1
8e93973d681f4f5ed06e2ce4d460ca91aa500a88

SHA256
38968919f80388257ad71087b072d984b9eb9947cec5789e3e434ededd1ce702

SHA512
5fde5450b36070a74809f06a58f25cc7ee3939810dcf06dae9a84cd9446af2b1781fc39b94a4fe9f3275f828b94e40308d14311606194f8d6388170cbce4e601

Download Submit
memory/4524-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-1930-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download