b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e

Analysis

max time kernel
150s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
06/08/2024, 01:30

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General

Target

b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
Size

46KB
MD5

5ada8dd2e50f7144dbf92672ffe3e4bb
SHA1

c75c26f0e956e2c3e4b8586031dfbd849abb404a
SHA256

b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e
SHA512

4202587e1cb01dec6138504dcb1d01514d89899e35eff107fff6413fb2069887636dde40d31608e407be010b6c1c6f6060dfad366d1fa45a5d35ef1a3c018189
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATBxCWi0DZqWOCWi:V7Zf/FAxTWoJJZENTBh

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (5072) 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/688-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x00090000000233fd-2.dat	upx
behavioral2/files/0x00040000000228de-6.dat	upx
behavioral2/memory/688-1826-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_OEM_Perp3-ul-phn.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WacLangPackEula.txt.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\7-Zip\Lang\ku.txt.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Serialization.Xml.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_MAK_AE-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PublisherR_OEM_Perp-pl.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessVL_MAK-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\OneNote\SendToOneNote-PipelineConfig.xml.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\PresentationCore.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\jopt-simple.md.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WINWORD.HXS.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogo.contrast-white_scale-180.png.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\nio.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Trial-pl.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CHART.DLL.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Globalization.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\UIAutomationClient.resources.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ru\UIAutomationProvider.resources.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome.dll.sig.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\policy\unlimited\local_policy.jar.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Grace-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\MSOSEC.DLL.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000049\index.win32.bundle.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Windows.Controls.Ribbon.resources.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\DirectWriteForwarder.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-file-l1-1-0.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp4-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ONENOTE_F_COL.HXK.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\ReachFramework.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_SubTrial-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Grace-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\bcel.md.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessVL_MAK-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Trial-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStdVL_MAK-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000027\assets\Icons\Delete.White.png.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Security.SecureString.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jdk-1.8\legal\jdk\pkcs11cryptotoken.md.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail-pl.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Net.NetworkInformation.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\PresentationUI.resources.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Internet Explorer\en-US\hmmapi.dll.mui.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusiness2019R_Retail-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Library\Analysis\ANALYS32.XLL.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-profile-l1-1-0.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.StackTrace.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Trial-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\ko.pak.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-rtlsupport-l1-1-0.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_SubTrial-pl.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\mscordaccore_amd64_amd64_6.0.2724.6912.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Collections.dll.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\sdxs\FA000000018\cardview\lib\native-common\assets\cardview-addtotable.png.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Java\jdk-1.8\bin\javap.exe.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\ClientLangPack_eula.txt.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial2-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019VL_MAK_AE-pl.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_Grace-ul-oob.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-white_scale-100.png.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\AccessR_Trial-ppd.xrm-ms.tmp	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.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	b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe

C:\Users\Admin\AppData\Local\Temp\b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe
"C:\Users\Admin\AppData\Local\Temp\b1f0ea102421af6c890af16ea9af52e2d211eca4166b9032e043f439e17ab49e.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:688

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-1-5-21-2718105630-359604950-2820636825-1000\desktop.ini.tmp

Filesize
46KB

MD5
e543f021b8ae233915d9788221002b56

SHA1
f0fa08e370ffbcaa2b237c881f154fa66d525914

SHA256
2e95f4b4a55135c580763116a935412e54b9fe081e603aeb115b96b46d47bf19

SHA512
299ef797a7eb14e4c769d728797a6609f1d37e0603279caa6ebaab193d64150ab9783e65b4ff471fdca199f1821f9facf8b7ed6c9ea42ba634a081d563b0808c

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

Filesize
145KB

MD5
9c44de1aee10ed1d20d1f5ee70770057

SHA1
8c7292ed5bc9b8e77b82e3eef31bc7b1897c01e0

SHA256
9c896a1f3db443140a3970480b38b55ea915a8903369590d4b117b47f684bfef

SHA512
fbbf44152cb5b8cd1b7cd7d7cba3fc920c0456ecca320b1693a543245b0f0de2c5669b45df8d58a2ba4d596273c4446fc8898b8ae9f103eb1cd56b37c9e54433

Download Submit
memory/688-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/688-1826-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download