f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319

Analysis

max time kernel
150s
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
19/09/2024, 03:35

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General

Target

f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
Size

58KB
MD5

d74c68a89265e04bc8b74edd657099fb
SHA1

a15768f6940e13edccb39ca17211eed1d503cbe0
SHA256

f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319
SHA512

47170f83fac3ec3ec69c650dd28f0f42c979fcc78935fa9be4d972ef935a3634b9565a3b7d915f29eeeb11b639fd46f08efcd4acba70e985296f25a576c011eb
SSDEEP

1536:CTWn1++PJHJXA/OsIZfzc3/Q8IZT+JZkeZrAJZkeZr6:KQSo7ZS

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (5125) 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/3436-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x000900000002347e-2.dat	upx
behavioral2/files/0x000f000000022902-6.dat	upx
behavioral2/memory/3436-850-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-string-l1-1-0.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.NonGeneric.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\System.Windows.Forms.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ja\PresentationCore.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jre-1.8\bin\decora_sse.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\blacklist.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Paper.xml.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription5-ppd.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.XLS.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\tipresx.dll.mui.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\symbols\ja-jp-sym.xml.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\coreclr.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Drawing.Primitives.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Data.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\UIAutomationClientSideProviders.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jdk-1.8\bin\javaw.exe.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\offsymb.ttf.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\APASixthEditionOfficeOnline.xsl.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\ApproveOpen.tiff.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\InkObj.dll.mui.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\javafx\libxml2.md.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\giflib.md.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Grace-ul-oob.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_Subscription-ppd.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_Subscription-ppd.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT.HXS.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ExcelCtxUIFormulaBarModel.bin.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LivePersonaCard\images\default\linkedin_ghost_school.png.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\System.Windows.Forms.Design.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Trial-ul-oob.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTest-pl.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_Subscription-pl.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\TellMeOneNote.nrr.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN092.XML.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\[email protected]	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.NETCore.App.runtimeconfig.json.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\System.Windows.Forms.Design.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationClientSideProviders.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\PresentationCore.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\MEIPreload\manifest.json.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaSansDemiBold.ttf.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Grace-ul-oob.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointVL_MAK-ul-oob.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019XC2RVL_MAKC2R-ul-phn.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogo.contrast-white_scale-100.png.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OWSSUPP.DLL.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.Tasks.Parallel.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\et.pak.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Retail-pl.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ppd.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdCO365R_SubTest-ppd.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\JitV.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.Extensions.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\joni.md.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_OEM_Perp-pl.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProR_Trial-pl.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub_eula.txt.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\Delete.png.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Security.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Reflection.Emit.Lightweight.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\PresentationUI.resources.dll.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-pl.xrm-ms.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-black_scale-80.png.tmp	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.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	f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe

C:\Users\Admin\AppData\Local\Temp\f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe
"C:\Users\Admin\AppData\Local\Temp\f8a34291a88bf8c9371b43fc718c6d35c48748202915bdcd7db9fbcd9e6d2319.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3436

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-1-5-21-945322488-2060912225-3527527000-1000\desktop.ini.tmp

Filesize
59KB

MD5
3483b7e9bfd728fc37d18befbf313d7d

SHA1
cf8de6bd9df3fd5df2886f92433478f6fb828982

SHA256
2f2485f464593d8169023471ea51320e7737ef7e207f959900286e41778b9e0d

SHA512
1d450f30a6c7b3e334655780a98f95476d84785e28021ffcf0ddbd515f9e827a7493706cdfd6f4a9651e972a96643c4a501c66fbe854629c269193d3c30f733c

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

Filesize
157KB

MD5
df5ec1b90fc24e9022ea7a99f8c063eb

SHA1
1b5270f8a78ff28aee7ab75791fd850cc0d855ba

SHA256
366fc40a6d6421772060af7e7a5ddd64f17117556ceaae1e3c2c0daea5d3ac41

SHA512
8606163f6d808a65586581b6b0830fd11acf6c0eb4851571f5cafc88a71bff7e42f2d4057b9cf2ad27d840f68d7f4698463d9473d8ec4cc56cf66a82125b9904

Download Submit
memory/3436-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/3436-850-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download