ff22590efe135b2d41f93782e3cad4c7f4a5c62a2b60a2fb8a3c185b10fe11a0

Analysis

max time kernel
119s
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
03/09/2024, 22:50

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General

Target

3d26efdb4310013daf30862d873f7760N.exe
Size

38KB
MD5

3d26efdb4310013daf30862d873f7760
SHA1

de6f41ef52bea70c825ad1bb60ac380d0633781f
SHA256

ff22590efe135b2d41f93782e3cad4c7f4a5c62a2b60a2fb8a3c185b10fe11a0
SHA512

1dd39a931ee486c1f06026b4233f17b9fd1113987a0f4f70582a7544ede7cfd6571c8832f4baa1c6d4aa9b7708a794c9d74419d032a39b22ea349de35a2f1ed5
SSDEEP

768:kBT37CPKKdJJcbQbf1Oti1JGBQOOiQJhATNyHF/MF/6m0m+s2BGUG3oxoYM2Mj:CTW7JJZENTNyl2Sm0mKQ

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4621) 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/2740-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00090000000234a6-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/2740-866-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_KMS_Client-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogo.contrast-white_scale-100.png.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\UIAutomationClient.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jre-1.8\lib\content-types.properties.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hans\System.Windows.Controls.Ribbon.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_OEM_Perp-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Pipes.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\PresentationCore.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\FindClose.xml.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-ul-phn.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.Tools.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Globalization.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_OEM_Perp-ppd.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\it\msipc.dll.mui.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ONENOTE_F_COL.HXK.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Internet Explorer\iexplore.exe.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jre-1.8\lib\fonts\LucidaTypewriterBold.ttf.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\fonts\LucidaTypewriterBold.ttf.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jre-1.8\lib\tzmappings.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_EnterpriseSub_Bypass30-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest2-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalPipcDemoR_BypassTrial365-ppd.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.Http.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Threading.ThreadPool.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hant\UIAutomationProvider.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\id.pak.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\ext\localedata.jar.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.Encoding.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.Primitives.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\eu\msipc.dll.mui.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Printing.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Trial-pl.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.TextWriterTraceListener.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\es\UIAutomationProvider.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\PresentationFramework.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\resource.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalDemoR_BypassTrial180-ppd.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdVL_MAK-ul-phn.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-util-l1-1-0.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.Claims.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusVL_KMS_Client-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\System.Windows.Controls.Ribbon.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\zh-Hans\ReachFramework.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\rmic.exe.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.PowerView.PowerView.x-none.msi.16.x-none.xml.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ppd.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Common Files\System\msadc\msadce.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ValueTuple.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jre-1.8\bin\plugin2\vcruntime140.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_KMS_Client_AE-ppd.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\idlj.exe.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\include\win32\jawt_md.h.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\zh-CN\msipc.dll.mui.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\xmlresolver.md.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\FirstRunLogoSmall.scale-140.png.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp-ppd.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_MAK_AE-ul-oob.xrm-ms.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msaddsr.dll.mui.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.IO.Packaging.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\ReachFramework.resources.dll.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\da\msipc.dll.mui.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tipresx.dll.mui.tmp	3d26efdb4310013daf30862d873f7760N.exe
File created	C:\Program Files\Crashpad\settings.dat.tmp	3d26efdb4310013daf30862d873f7760N.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	3d26efdb4310013daf30862d873f7760N.exe

C:\Users\Admin\AppData\Local\Temp\3d26efdb4310013daf30862d873f7760N.exe
"C:\Users\Admin\AppData\Local\Temp\3d26efdb4310013daf30862d873f7760N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2740

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
38KB

MD5
073f0e12e12d2526172b1049ee028d1e

SHA1
1f94270661043ef953ce58b493be2c780fcc70be

SHA256
d89a2afdf32d0dc5026d2b3cecfb2f8324fba5e25715860af3d2f3bae377e12a

SHA512
4d05b31bcdbbd5b3bff4ea0839cb7b19e0a08d112a3c192c42ae8093cf59627366c00e729f5510db164f9bfba8f621c7e6a03c578b7e82c182db4e745cb43141

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

Filesize
137KB

MD5
3cdf7bb001e59aee83562c3cdd0811a3

SHA1
44c726c7d1ba510dd462d525ab5b4b0c48464eb4

SHA256
076f710acd489dba2b0c05f4825e0ae3e5cae8bf0d3562defa662af4256b7d32

SHA512
7e253f25607b6f6edef452e3f79b522af3cf467d15f0f488bdfba694c2ef66fcb57200dc9ec153a53eb225b648ae54b8f135611530b9a740eb7151eb7d50e3f7

Download Submit
memory/2740-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2740-866-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download