1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2c

Analysis

max time kernel
119s
max time network
92s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
04/10/2024, 22:29

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General

Target

1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
Size

29KB
MD5

fd8b750646312cc62b65667afcfaaae0
SHA1

33fe7f3655eff2b9a902c100602edacbaa3cae2f
SHA256

1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2c
SHA512

5adebd2cc188e46a667099a42bc5fde013c5dfb871c1678afa05f3c1dcb6eaf053ec531b641b8a346805c62e3e504b5631166a4a21f7fd2b9e599589c420fd36
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcI9yGH5BH:CTW7JJ7TPTH

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (4673) 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/1596-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00080000000234f9-2.dat	upx
behavioral2/files/0x00040000000228de-6.dat	upx
behavioral2/memory/1596-1001-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\Publisher2019R_OEM_Perp-pl.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-string-l1-1-0.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365EduCloudEDUR_Grace-ul-oob.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSIPC\vi\msipc.dll.mui.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jre-1.8\legal\jdk\jcup.md.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Standard2019VL_MAK_AE-ul-phn.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ComponentModel.EventBasedAsync.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\WindowsFormsIntegration.resources.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\deploy\messages_pt_BR.properties.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\it\System.Windows.Input.Manipulations.resources.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jstat.exe.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-process-l1-1-0.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription3-pl.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\OneNoteR_Retail-ppd.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\OneNoteLogo.scale-100.png.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.ValueTuple.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\legal\jdk\icu.md.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019VL_KMS_Client_AE-ul-oob.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\PowerPoint2019R_Trial-ppd.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdR_Retail-ppd.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\mip_telemetry.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\icudtl.dat.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\management\snmp.acl.template.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-crt-process-l1-1-0.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\charsets.jar.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Fonts\Times New Roman-Arial.xml.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoVL_MAK-ul-phn.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\AppVIsvApi.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Linq.Parallel.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\tr\System.Windows.Forms.resources.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\dtplugin\deployJava1.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\vcruntime140.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.TypeConverter.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\net.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\fonts\LucidaBrightDemiBold.ttf.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardMSDNR_Retail-ul-oob.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\Configuration\card_expiration_terms_dict.txt.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\zh-Hant\UIAutomationClientSideProviders.resources.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Internet Explorer\ielowutil.exe.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Text.Json.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationFramework.Aero2.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win10.mp4.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Common Files\System\Ole DB\en-US\sqloledb.rll.mui.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Collections.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioPro2019R_Grace-ppd.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\pl\System.Windows.Forms.Design.resources.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jre-1.8\bin\api-ms-win-crt-utility-l1-1-0.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\include\jdwpTransport.h.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\TellMeOneNote.nrr.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\pt-BR\tipresx.dll.mui.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Linq.Parallel.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\net.properties.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProPlus2019R_Trial2-pl.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365BusinessR_Grace-ul-oob.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\MSOSEC.XML.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-time-l1-1-0.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Diagnostics.Process.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365HomePremR_Subscription2-ppd.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\ExcelLogoSmall.contrast-black_scale-140.png.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Net.Security.dll.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Access2019R_Retail-ppd.xrm-ms.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ExcelCombinedFloatieModel.bin.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
File created	C:\Program Files\Common Files\System\Ole DB\en-US\msdasqlr.dll.mui.tmp	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.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	1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe

C:\Users\Admin\AppData\Local\Temp\1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe
"C:\Users\Admin\AppData\Local\Temp\1fd4f12237ced5b6b1cb0ecb4b09e9d88bcf0981f6d02845042f7cefc45d7f2cN.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:1596

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
29KB

MD5
46f45c7e1c3cd0c472c29ac06336d5cc

SHA1
1904f0932b2810213d0d3775834fa8c87a54ee26

SHA256
2d368d983136731ae39d3d6aa679cffb2683e9028d889bc71f2931f2cbc252aa

SHA512
e0f00ba7368b0a3b01f0f348dbe876f089800bd49b3b74997f58ace2feabaa49ddd4c6a8b611e10f0ac4f1af6735e5ac654e9b374dc211c0063f0d1ea472f226

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

Filesize
128KB

MD5
48710b889afb8121717b81ffb67eb2f2

SHA1
493f8a723e22b3c79a5d5252d13050f588f13fb6

SHA256
c10d1222c88ef854afc2c6e06a96a24767dc2620257c9feda430b0d7c53ef68a

SHA512
bd28fcd2f0453b076f7906b9a663ead232fc8598e3ca7770119bcd2f5c47839343787da8d8f96b0147474e7f87b453d245490f8498fafdd77cfd3e327f22f655

Download Submit
memory/1596-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1596-1001-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download