d30c6c04e31930e3c66c06a09ebed7c1a17d1938131a5a115bd55f421ab13559

Analysis

max time kernel
120s
max time network
121s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
01/09/2024, 17:59

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General

Target

8fc3ca9959579db14810ac7e86363c80N.exe
Size

57KB
MD5

8fc3ca9959579db14810ac7e86363c80
SHA1

51280d6796f9c4d3f9bc5d1e863cec5711fbee4a
SHA256

d30c6c04e31930e3c66c06a09ebed7c1a17d1938131a5a115bd55f421ab13559
SHA512

57b0d489d7cbbfd4b05cf69eff0109dae0debaa5a8e773b4326ad27d0779373cf1e38ca990af6e0aceb109c998b55f271c81beeb8355841c5faf4dc327516712
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATBaMYN353e353i:V7Zf/FAxTWoJJZENTBTY5

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4361) 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/4416-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000900000002362a-2.dat	upx
behavioral2/files/0x000600000001690a-6.dat	upx
behavioral2/memory/4416-856-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-string-l1-1-0.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\plugin2\vcruntime140.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-pl.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\UIAutomationProvider.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_zh_HK.properties.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Grace-ul-oob.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Input.Manipulations.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipscht.xml.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.CompilerServices.Unsafe.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ComponentModel.TypeConverter.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\System.Windows.Forms.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.officemui.msi.16.en-us.xml.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-ppd.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\7-Zip\Lang\sl.txt.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.TraceSource.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\webkit.md.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-oob.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Cartridges\Informix.xsl.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Excel.BackEnd.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\7-Zip\7zCon.sfx.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\System\uk-UA\wab32res.dll.mui.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp4-ul-oob.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\bwclassic.dotx.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\MSOSEC.DLL.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\System\ado\msado27.tlb.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\System.Windows.Controls.Ribbon.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\xerces.md.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPointR_OEM_Perp-ul-phn.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdR_OEM_Perp-ul-phn.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\tipresx.dll.mui.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\PresentationCore.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\fil.pak.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\GostName.XSL.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Bibliography\Style\GostTitle.XSL.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\de\System.Windows.Input.Manipulations.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Proof.Culture.msi.16.fr-fr.xml.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\BCSRuntimeRes.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.Win32.Primitives.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_sv.properties.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jre-1.8\bin\jabswitch.exe.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.Proof.Culture.msi.16.es-es.xml.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription1-ppd.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pl\System.Xaml.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\System\msadc\it-IT\msadcor.dll.mui.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Xml.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jre-1.8\lib\net.properties.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Inset.eftx.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdCO365R_Subscription-ppd.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\Microsoft.VisualBasic.Forms.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\System.Windows.Forms.Design.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-libraryloader-l1-1-0.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Common Files\System\msadc\fr-FR\msdaprsr.dll.mui.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Client\msvcp120.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Integration\C2RManifest.osmuxmui.msi.16.en-us.xml.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Retail-ppd.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\pt-BR\System.Windows.Forms.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jre-1.8\bin\ssv.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\directshow.md.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardVL_KMS_Client-ul.xrm-ms.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\Microsoft.VisualBasic.Forms.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ko\System.Xaml.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\System.Xaml.resources.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Drawing.dll.tmp	8fc3ca9959579db14810ac7e86363c80N.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	8fc3ca9959579db14810ac7e86363c80N.exe

C:\Users\Admin\AppData\Local\Temp\8fc3ca9959579db14810ac7e86363c80N.exe
"C:\Users\Admin\AppData\Local\Temp\8fc3ca9959579db14810ac7e86363c80N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4416

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=4396,i,10597648459838880772,16562651767759956329,262144 --variations-seed-version --mojo-platform-channel-handle=4164 /prefetch:8
1⤵
PID:3360

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
57KB

MD5
2c3c40fa4d47e5fd6321c0de8b397c97

SHA1
13b1c6cc394328be452998ef2d65929fdcac9043

SHA256
8ebc032e9557a5e6de8d78141ccbd6b5b08676f556739b4ecd58c1cec75deb03

SHA512
3a7f74b29b0d7ce66dbad7232e597924ac5386f3cce1bc541c073be2179dfc9dca886c989d1a9d617d686575462f8decf2b33777a6340e7ddda099f336bffb18

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

Filesize
170KB

MD5
1b1c1eb64dd901c2597cd3c2bc9a447e

SHA1
f780cb88058e15c6ea0dad84225e739e2f0a95d6

SHA256
e9d564d561ec1ea289330ef890263f919e797716580b372d1041674aa2af3cbf

SHA512
164747a273818e90a3e21b2475934c628314ef569fa228f6009307948759f800e0ffe80fe0a6fbb0381c0eade2f5cbc88c600158c6f934b428a6104453bec97f

Download Submit
memory/4416-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4416-856-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download