b03558b03b66cdb2d2ec2bea4fc581499f5f4574f30e0a15547263f59232a394

General

Target

908ba8ed61e8cb4f7703c7761295d0b0N.exe
Size

53KB
MD5

908ba8ed61e8cb4f7703c7761295d0b0
SHA1

217ec4619763ea3c0c444f0b3cfbf7ed93a899ef
SHA256

b03558b03b66cdb2d2ec2bea4fc581499f5f4574f30e0a15547263f59232a394
SHA512

bbc3e01c1f429f5f1cfce48b8d79f2bb372330a25474195fcd12878eb2745cb9da06abae9e6191d180f1c4ac24b0ddcabcd2a5d7323f72bdbe34b0a295c9826a
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATNyHF/MF/HggD5K:V7Zf/FAxTWoJJZENTNyl2aP3

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (3698) 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

Processes:

resource	yara_rule
behavioral2/memory/4124-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
C:\$Recycle.Bin\S-1-5-21-1705699165-553239100-4129523827-1000\desktop.ini.tmp	upx
C:\Program Files\7-Zip\7-zip.dll.tmp	upx
behavioral2/memory/4124-1654-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

Processes:

908ba8ed61e8cb4f7703c7761295d0b0N.exe

description	ioc	process
File created	C:\Program Files\7-Zip\Lang\mn.txt.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\7-Zip\Lang\sr-spc.txt.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\Microsoft.VisualBasic.Forms.resources.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\Locales\id.pak.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\wsdetect.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.de-de.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.Cryptography.Encoding.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp-pl.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Grace-ppd.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\7-Zip\Lang\ext.txt.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\WindowsBase.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\bci.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Loader.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Windows.Forms.resources.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\Locales\ro.pak.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\idlj.exe.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019VL_MAK_AE-ppd.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Retail-ul-oob.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.fr-fr.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\Alphabet.xml.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\TabTip.exe.mui.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\psfontj2d.properties.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\client-issuance-bridge-office.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_OEM_Perp-ppd.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\7-Zip\Lang\ku.txt.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-string-l1-1-0.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-crt-multibyte-l1-1-0.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\javafx_iio.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_Retail-ul-phn.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ul-phn.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\it\PresentationUI.resources.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationNative_cor3.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\PresentationUI.resources.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\j2pcsc.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\pkcs11wrapper.md.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\Welcome.html.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Gill Sans MT.xml.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_OEM_Perp-pl.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_KMS_Client_AE-ul.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVCatalog.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\Microsoft.Win32.Registry.AccessControl.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\System.Threading.AccessControl.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\currency.data.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-timezone-l1-1-0.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusiness2019R_OEM_Perp2-ul-oob.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pt-BR\UIAutomationProvider.resources.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\ecc.md.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Trial-ul-oob.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProMSDNR_Retail-ul-phn.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Compression.Native.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\fr\WindowsBase.resources.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\dcpr.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProCO365R_SubTrial-ppd.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\System\ado\msader15.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.InteropServices.RuntimeInformation.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\deploy\messages_ko.properties.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\PackageManifests\AppXManifest.90160000-001B-0409-1000-0000000FF1CE.xml.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial2-ppd.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_SubTest4-ul-oob.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\7-Zip\Lang\da.txt.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.et-ee.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Private.Uri.dll.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStd2019VL_MAK_AE-ul-phn.xrm-ms.tmp	908ba8ed61e8cb4f7703c7761295d0b0N.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

Processes:

908ba8ed61e8cb4f7703c7761295d0b0N.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 908ba8ed61e8cb4f7703c7761295d0b0N.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	908ba8ed61e8cb4f7703c7761295d0b0N.exe

C:\Users\Admin\AppData\Local\Temp\908ba8ed61e8cb4f7703c7761295d0b0N.exe
"C:\Users\Admin\AppData\Local\Temp\908ba8ed61e8cb4f7703c7761295d0b0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:4124

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\$Recycle.Bin\S-1-5-21-1705699165-553239100-4129523827-1000\desktop.ini.tmp
Filesize
53KB

MD5
41ec7cf954e8d328e85e7901302b8684

SHA1
ff49727061a92d55440c122b4a088c2d558dedbe

SHA256
6d91b1a4c67b020e2d085f8a6f49b42d911e7697f3138867341cf7c0f75af10b

SHA512
87e336bd0e2a5617ce5d80f118a779ab0b3de92ee87d4bc70c8ddf31a1397223c2774a1863f5b47764f4897554133fe8b8f4f21de730ae9cdd3c260770d5580b

Download Submit
C:\Program Files\7-Zip\7-zip.dll.tmp
Filesize
152KB

MD5
73a189d8844f4091a5c8cbc7da81b1fe

SHA1
02d1c60b27967864f2dc0346609aec77ec886443

SHA256
7c20bf8c13da59461f387f73c458708d39c997c0906229f9f819db8540126cba

SHA512
19788fc50e59404027b9fb45e71ec99f80b5e5a8ea9d1a7165d9f5b108c2e625a970d302c668a4b796a62dd921f2089cb109465e840467fac43abe0ccae11619

Download Submit
memory/4124-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4124-1654-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

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