4c0a71a4feee1186cc67cdf127640d37fd122157efb97aef862e055227382211

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
28-08-2024 20:57

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General

Target

921da0373da8852057d5644b01c81450N.exe
Size

71KB
MD5

921da0373da8852057d5644b01c81450
SHA1

9ff69d50d10b979d8a7d0da2a8371b6cb35a1cbe
SHA256

4c0a71a4feee1186cc67cdf127640d37fd122157efb97aef862e055227382211
SHA512

030d78026a03623b39e58d60ead3f7e289a112022282e070a02dc1574df300907d59db61d6c719440667479fc71b81b4d74ffa4aac60bc479a78ab8fbcf88a47
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJ1EXBwzEXBwdcMcI9CBT37CPKKdJJ1EXBwzE0:V7Zf/FAxTWoJJ7TiTW7JJ7TtRd

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4316) 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/3784-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000235c1-2.dat	upx
behavioral2/files/0x000600000001690a-6.dat	upx
behavioral2/memory/3784-808-0x0000000000400000-0x000000000040B000-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\System.Collections.Immutable.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\PresentationUI.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_Subscription-ppd.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\mscorrc.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Buffers.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jsoundds.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jre-1.8\bin\policytool.exe.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\blacklist.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProO365R_Subscription-pl.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Common Files\microsoft shared\OFFICE16\Office Setup Controller\pidgenx.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationCore.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Yellow Orange.xml.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PersonalR_OEM_Perp-pl.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-bridge-office.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\en\LocalizedStrings.xml.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fsdefinitions\keypad\kor-kor.xml.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Xaml.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Windows.Forms.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\jcup.md.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Retail-ppd.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-stdio-l1-1-0.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Security.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\Microsoft.VisualBasic.Forms.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\PresentationCore.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Colors\Green.xml.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationClientSideProviders.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\glib-lite.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_OEM_Perp-ul-oob.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ONENOTE.HXS.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_Retail-pl.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_SubTrial-ul-oob.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Retail-pl.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_Subscription-ppd.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\UIAutomationClient.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\UIAutomationClient.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\WindowsFormsIntegration.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\ImportReset.mht.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\BCSRuntimeRes.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.Csp.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win8.mp4.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_EnterpriseSub_Bypass30-ppd.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\STSLIST.CHM.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\TelemetryDashboard.xltx.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\MSOSEC.XML.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Common Files\System\msadc\msdaprst.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Serialization.Primitives.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\UIAutomationClientSideProviders.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019R_Grace-ul-oob.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Intrinsics.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\WindowsBase.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365ProPlusEDUR_SubTrial-ppd.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jre-1.8\bin\sunec.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jre-1.8\bin\zip.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.office32ww.msi.16.x-none.xml.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest5-pl.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\unicode.md.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdO365R_SubTrial-ul-oob.xrm-ms.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Common Files\System\msadc\fr-FR\msdaprsr.dll.mui.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.CSharp.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationFramework.resources.dll.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_LinkNoDrop32x32.gif.tmp	921da0373da8852057d5644b01c81450N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.officemui.msi.16.en-us.xml.tmp	921da0373da8852057d5644b01c81450N.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	921da0373da8852057d5644b01c81450N.exe

C:\Users\Admin\AppData\Local\Temp\921da0373da8852057d5644b01c81450N.exe
"C:\Users\Admin\AppData\Local\Temp\921da0373da8852057d5644b01c81450N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:3784

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4388,i,3210801877307184477,8078594481454001567,262144 --variations-seed-version --mojo-platform-channel-handle=3864 /prefetch:8
1⤵
PID:1604

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-1-5-21-2170637797-568393320-3232933035-1000\desktop.ini.tmp

Filesize
72KB

MD5
b4408209163fa8b81e74c0eccee90878

SHA1
93daa7d5a4a8f7eb4dc07d8242fe7b3b50481e9d

SHA256
1533cc4e8ba492767d0950b50858e3e5ffb30cd22902ec84e90f993acf6ab6af

SHA512
30fc83c9b30869ab289bde8ea35aca73e5825d924c5a5570ea56102986dfa067cfe9f72d47ec285025cc4de659a1ee1508cb9fc986a40490b8c30251299198eb

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

Filesize
184KB

MD5
ee5487329ba14eb1460c3bddc5d65d00

SHA1
43fc9a5c5e74e0e77512281608dd3759026a7e51

SHA256
0dc82fef201103ea5dd59dbfd640ae17266bfbe6fadd999e42324c25f422f589

SHA512
012469e4f8e43f98440704fa832135cbdadbfe2954b1031156b23679ad734c25ecf7b462c47797fbf790d8c17cd1c99aa8f71318807b20f83fcc5283ede2bcd2

Download Submit
memory/3784-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3784-808-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download