29bb1b6879975ee5bc7fe659a02f9d73f57d2a1c889b808aace3e38a85458ae6

Analysis

max time kernel
120s
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
02/09/2024, 09:04

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General

Target

c71836b42b863b16bc24c2d89c781cf0N.exe
Size

42KB
MD5

c71836b42b863b16bc24c2d89c781cf0
SHA1

e7b2a1d5567fab4f4aaea76e2123927c3ac40f4b
SHA256

29bb1b6879975ee5bc7fe659a02f9d73f57d2a1c889b808aace3e38a85458ae6
SHA512

37a457f9561ecc61f0e7dc22974b9db933477de2164f73e7cf4425d2ce213ed28cb03fa23df4f35e3f8a96635d92fd19784816e8aba991a95a65dc03b82c2532
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcwBcCBcw/tio/tiWkjktJwxJw6:CTW7JJ7TTQoQWkjktJwxJw6

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4693) 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/1920-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x0009000000023480-2.dat	upx
behavioral2/files/0x0004000000022933-6.dat	upx
behavioral2/memory/1920-962-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.scale-80.png.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\de-DE\TipRes.dll.mui.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\DBGHELP.DLL.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_OEM_Perp-ul-phn.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdXC2RVL_MAKC2R-ul-phn.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Retail-pl.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\tr\WindowsFormsIntegration.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Outlook2019R_Retail-ul-oob.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Data.SapClient.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-core-datetime-l1-1-0.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\7-Zip\Lang\fy.txt.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\fonts\LucidaTypewriterBold.ttf.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogo.scale-80.png.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ja\UIAutomationClientSideProviders.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\sound.properties.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\klist.exe.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-ppd.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\sk\msipc.dll.mui.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\Microsoft.DiaSymReader.Native.amd64.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\Microsoft.NETCore.App.deps.json.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Text.Encoding.Extensions.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PenImc_cor3.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\fr\System.Windows.Controls.Ribbon.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jli.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_SubTest-pl.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectPro2019R_Trial-ppd.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\en-US\rtscom.dll.mui.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Diagnostics.Contracts.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\SETLANG.HXS.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\lib\jawt.lib.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\Microsoft.VisualStudio.Tools.Applications.Runtime.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\sr-Cyrl-BA\msipc.dll.mui.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\7-Zip\Lang\vi.txt.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Transactions.Local.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\th.pak.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\jopt-simple.md.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019MSDNR_Retail-ul-oob.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioStd2019R_Grace-ppd.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\ko\msipc.dll.mui.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\7-Zip\Lang\uk.txt.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Common Files\System\msadc\msadds.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_zh_TW.properties.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.Annotations.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Windows.Forms.Primitives.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jdb.exe.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-multibyte-l1-1-0.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PresentationCore.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\System.Windows.Forms.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\javaws.exe.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jre-1.8\legal\javafx\jpeg_fx.md.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_OEM_Perp3-ul-phn.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalPipcR_OEM_Perp-ul-oob.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mscss7cm_es.dub.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Common Files\System\Ole DB\en-US\sqlxmlx.rll.mui.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ko\UIAutomationClient.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\uk.pak.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\servertool.exe.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jre-1.8\Welcome.html.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessR_Retail2-ul-phn.xrm-ms.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Power View Excel Add-in\Microsoft.PowerBI.Diagnostics.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\ucrtbase.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\es\PresentationCore.resources.dll.tmp	c71836b42b863b16bc24c2d89c781cf0N.exe
File created	C:\Program Files\Java\jre-1.8\lib\security\javaws.policy.tmp	c71836b42b863b16bc24c2d89c781cf0N.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	c71836b42b863b16bc24c2d89c781cf0N.exe

C:\Users\Admin\AppData\Local\Temp\c71836b42b863b16bc24c2d89c781cf0N.exe
"C:\Users\Admin\AppData\Local\Temp\c71836b42b863b16bc24c2d89c781cf0N.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1920

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-1-5-21-1194130065-3471212556-1656947724-1000\desktop.ini.tmp

Filesize
42KB

MD5
50f2eeecc25bfa9f22f3a0d3605cc979

SHA1
1e61e97f0b80c0bf3b7433afb0b9061d4534f6b9

SHA256
66e0000c28e60234d6f10f37e0a7e229cb3fa735e5806fdb37302045644c1567

SHA512
7ddc51c9c55e1f4537a7220af08b07d994c2b6cbdef39e1a78b74b6988330c20e5fbc33a9c59659341b3c9929365a886dc223b5e46a8ed650b9643ab719a2aa0

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

Filesize
141KB

MD5
e2968d3183e8684f0c3e623530f5f3f4

SHA1
47cced2d15767042d65afcbdab3c52c4fd0e4de9

SHA256
675e294d59c550097653254209c2e9f4115e4a667cf70a1da81730bb8d736395

SHA512
f8933953bb09df1819dd1f40a9a9013015e178e675f2e96133ea06ed7d0b72395643012171d35adda57ddeaf1b87b89b3896901371d627e930c117c6cd339af4

Download Submit
memory/1920-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1920-962-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download