cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
26/07/2024, 03:38

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General

Target

cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
Size

66KB
MD5

af50320a894a76f598e6ebc3aed1dfb0
SHA1

3ee6ce55f351f8c6001ab80100f27bfbfd8b5280
SHA256

cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41
SHA512

b860afd4832bac41685d402cd351342f7f47c8712e476452a62732d2ab6c01daf9c5acace55e05e9969281f917ea5729f8460cd0890acbedf1bdec3f4d3e3538
SSDEEP

768:V7Blpf/FAK65euBT37CPKKQSjyJJcbQbf1Oti1JGBQOOiQJhATBQKb9VuUdjqZr7:V7Zf/FAxTWoJJZENTBQo9EUdjqlSi

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4648) 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/2764-0-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0009000000023452-2.dat	upx
behavioral2/files/0x000900000002349e-6.dat	upx
behavioral2/memory/2764-1612-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\msvcp140.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\System\msadc\msadcer.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Trial-ul-oob.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Client.Models.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\D3DCompiler_47_cor3.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\plugin.jar.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\hr\msipc.dll.mui.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessEntryR_PrepidBypass-ul-oob.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\EduWorks Data Streamer Add-In\MicrosoftDataStreamerforExcel.dll.config.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\it-IT\InkObj.dll.mui.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\System\Ole DB\es-ES\sqlxmlx.rll.mui.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\zh-Hans\UIAutomationClientSideProviders.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_CopyDrop32x32.gif.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Professional2019R_Retail-ppd.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Shims.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.scale-180.png.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\UIAutomationClient.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Internet Explorer\ja-JP\iexplore.exe.mui.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\images\cursors\win32_LinkDrop32x32.gif.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jre-1.8\lib\logging.properties.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Word2019VL_KMS_Client_AE-ppd.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-conio-l1-1-0.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-math-l1-1-0.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.InteropServices.RuntimeInformation.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\wpfgfx_cor3.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\jfxmedia.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\System.Windows.Forms.Design.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ExcelVL_MAK-ul-oob.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Personal2019R_Retail-pl.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\WWINTL.DLL.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogoSmall.contrast-black_scale-80.png.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudent2019R_Retail-ul-phn.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Spatial.NetFX35.V7.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Data.Recommendation.Common.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\cpprestsdk.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\bg-BG\tipresx.dll.mui.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Reflection.TypeExtensions.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\es\UIAutomationProvider.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\MEIPreload\preloaded_data.pb.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\PowerPntLogoSmall.scale-80.png.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\THIRDPARTYLICENSEREADME.txt.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\excelcnvpxy.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\EXPLODE.WAV.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.IO.Pipes.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\WindowsFormsIntegration.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\libGLESv2.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.106\vk_swiftshader.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\management\jmxremote.password.template.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mscss7es.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\UIAutomationClientSideProviders.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProXC2RVL_KMS_ClientC2R-ul.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\PSRCHPHN.DAT.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\BORDERS\MSART11.BDR.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\pt-BR\PresentationFramework.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\ru\UIAutomationProvider.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Retrospect.thmx.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019VL_KMS_Client_AE-ul.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\QuickStyles\casual.dotx.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.ar-sa.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\ko\System.Windows.Input.Manipulations.resources.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\UIAutomationClientSideProviders.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\fxplugins.dll.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlusR_Trial-pl.xrm-ms.tmp	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.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	cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe

C:\Users\Admin\AppData\Local\Temp\cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe
"C:\Users\Admin\AppData\Local\Temp\cf1d3557898a39496f6137f43c55b6b5f966b5b418559e285b3428d2ef661e41.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2764

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-1-5-21-2990742725-2267136959-192470804-1000\desktop.ini.tmp

Filesize
66KB

MD5
040a711ebf1cc67fb1d3cf56abfcb1a9

SHA1
33f7fe383a740331b98cbf3108dd81ce2b3f87d6

SHA256
9d1f721fbb2c0ca74f9e513a5df308d2478e6bcdf120b439642c3fd7b06fa2c1

SHA512
4c715166d00d448a517943a8f187c0821c85c8749c0c719240bd2663db8db60283ba7d778408ba09d59d074ff7bd9af464932afcecae1086190608cb1c110a8a

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

Filesize
165KB

MD5
d20eb140c2778679d422ad3e2cea6725

SHA1
5b48cd546bbb2e3ed54b819f3f5539df6899fab7

SHA256
031e88a5bcd07c5c8461e808829ff3e96af153257ab10dc4d694ba8280915ca5

SHA512
dd7effed13b4d864098081ad27dcb0919d1ee0b107c8380c4590ba27917f851db6f0a58013269cb11d2d7ce98217d074a0b18d72aab5877e446927b6cd09c07c

Download Submit
memory/2764-0-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2764-1612-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download