a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d

Analysis

max time kernel
150s
max time network
133s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
11-09-2024 09:17

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General

Target

a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
Size

31KB
MD5

2e87f43835e96846147af6bd07fd404d
SHA1

fd134eccff5dbf5757544050210ca50ee5c2ed3e
SHA256

a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d
SHA512

9f7896fa7be4979a06f9c0872b420c64bc5bce2d9e97b6454b5d92f4d599369699deae41b8ecb92843a441a587a511a54339aa73df5d2dcc747a2b9cc73f1bd5
SSDEEP

768:kBT37CPKKdJJ1EXBwzEXBwdcMcI9B6vsphM:CTW7JJ7T3hM

Score

9^/10

discovery ransomware upx

Malware Config

Signatures

Renames multiple (5250) 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/2872-0-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/files/0x00080000000234fa-2.dat	upx
behavioral2/files/0x0014000000022936-6.dat	upx
behavioral2/memory/2872-929-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Retail-ul-oob.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\StandardR_Retail-pl.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\1033\POWERPNT_COL.HXT.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Formats.Asn1.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.ComponentModel.Primitives.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\it\System.Windows.Forms.resources.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\System.Windows.Presentation.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\bin\vcruntime140_1.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Client\api-ms-win-core-file-l1-2-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\fre\StartMenu_Win10.mp4.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Windows.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Globalization.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\System\Ole DB\es-ES\oledb32r.dll.mui.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-processthreads-l1-1-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-crt-time-l1-1-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Diagnostics.Tools.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\System.Runtime.Serialization.Xml.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\Accessibility.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.hi-in.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RUI.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_SubTrial3-pl.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\SkypeforBusinessR_Grace-ppd.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.MashupEngine.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGLBL092.XML.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\cs\PresentationFramework.resources.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentR_Trial2-ppd.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\api-ms-win-core-file-l2-1-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Collections.Immutable.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\cs\ReachFramework.resources.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\8.0.2\UIAutomationClient.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\O365SmallBusPremR_Subscription5-ul-oob.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\ExcelCtxUIFormulaBarModel.bin.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\7-Zip\Lang\zh-cn.txt.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.th-th.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProfessionalR_OEM_Perp-ppd.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\6.0.27\PresentationNative_cor3.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Locales\sw.pak.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\jre\THIRDPARTYLICENSEREADME-JAVAFX.txt.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\Excel2019R_OEM_Perp-ul-oob.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeBusinessPipcR_OEM_Perp-ul-phn.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\LogoImages\WinWordLogoSmall.contrast-white_scale-80.png.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ipsita.xml.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\System.Runtime.Handles.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MSO.FRAMEPROTOCOLWIN32.DLL.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Document Themes 16\Theme Effects\Glossy.eftx.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\MondoR_O16EnterpriseVL_Bypass30-ul-oob.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\7.0.16\PenImc_cor3.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\jre\lib\security\public_suffix_list.dat.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\HomeStudentVNextR_Retail-pl.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectProR_Retail2-ul-phn.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.lv-lv.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.IO.FileSystem.DriveInfo.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\MEDIA\BOMB.WAV.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Office16\PAGESIZE\PGMN065.XML.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome_pwa_launcher.exe.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\WindowsAccessBridge-64.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\VisioProO365R_Subscription-ppd.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-synch-l1-2-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Microsoft Office\root\Licenses16\ProjectStdO365R_Subscription-ppd.xrm-ms.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jre-1.8\bin\instrument.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Common Files\microsoft shared\ink\ar-SA\tipresx.dll.mui.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\jre\bin\api-ms-win-core-datetime-l1-1-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\System.Runtime.Serialization.Primitives.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
File created	C:\Program Files\Java\jdk-1.8\bin\api-ms-win-core-processenvironment-l1-1-0.dll.tmp	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.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	a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe

C:\Users\Admin\AppData\Local\Temp\a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe
"C:\Users\Admin\AppData\Local\Temp\a3af47385e8910cc10c4961af24313fb19df5ba98a53cae90060f34ef208111d.exe"
1⤵
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:2872

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-1-5-21-4182098368-2521458979-3782681353-1000\desktop.ini.tmp

Filesize
32KB

MD5
8ea24407b48a9a281e4f6682e1deee8d

SHA1
451a237bc090a2ea073fd3ec0c021d81bb2b6955

SHA256
ccd9bf93e223256991ee1431d36e439a11aec789d1e353f6735c5cb05e565297

SHA512
9e8d22397fc5a9bfbef961ad6280e99448804cdb1da2210cd4f92635648344b709e14769f8bfa599739b86f22e4ebccbeefc664c4482d6badde580422fd20b91

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

Filesize
130KB

MD5
4aa9524694fc6cdf03738a85040f1cca

SHA1
df1da63984e2d9ed1c7e909be2e4d0ad23b12fa1

SHA256
1f77e96400b62fa46c170e11cf44a8f81818b1ae6468ed3cfa47e62f4fd5f96a

SHA512
812334648ec518f9fc16e32587ed7e282a2ca95d7e9dbc0148b68aa7df82079045bfa9be6d6aaaa7902fd1d5bb79be3e81c7feed025b89cb58427f8a05ff3cf9

Download Submit
memory/2872-0-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/2872-929-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download