Malware Analysis Report

2025-03-15 06:36

Sample ID 241230-zf3apaxpbn
Target 4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe
SHA256 4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553
Tags
bdaejec aspackv2 backdoor discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553

Threat Level: Known bad

The file 4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe was found to be: Known bad.

Malicious Activity Summary

bdaejec aspackv2 backdoor discovery

Bdaejec

Detects Bdaejec Backdoor.

Bdaejec family

Checks computer location settings

Executes dropped EXE

ASPack v2.12-2.42

Drops file in Program Files directory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-30 20:40

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-30 20:40

Reported

2024-12-30 20:42

Platform

win10v2004-20241007-en

Max time kernel

108s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe"

Signatures

Bdaejec

backdoor bdaejec

Bdaejec family

bdaejec

Detects Bdaejec Backdoor.

Description Indicator Process Target
N/A N/A N/A N/A

ASPack v2.12-2.42

aspackv2
Description Indicator Process Target
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBackgroundHost.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\rmic.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\officeappguardwin32.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\pack200.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSOSYNC.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\msotd.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsStore_11910.1002.5.0_x64__8wekyb3d8bbwe\WinStore.App.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\jjs.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\tnameserv.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.549981C3F5F10_1.1911.21713.0_x64__8wekyb3d8bbwe\Win32Bridge.Server.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeApp.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\7-Zip\7zG.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\java.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.DBConnection.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\reader_sl.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\wow_helper.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.MicrosoftOfficeHub_18.1903.1152.0_x64__8wekyb3d8bbwe\LocalBridge.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.WindowsMaps_5.1906.1972.0_x64__8wekyb3d8bbwe\Maps.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateCore.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\policytool.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\fmui\fmui.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.Microsoft3DViewer_6.1908.2042.0_x64__8wekyb3d8bbwe\3DViewer.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteshare.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\javac.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Mozilla Firefox\uninstall\helper.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.VP9VideoExtensions_1.0.22681.0_x64__8wekyb3d8bbwe\codecpacks.VP9.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.XboxIdentityProvider_12.50.6001.0_x64__8wekyb3d8bbwe\XboxIdp.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\FullTrustNotifier.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\123.0.6312.123\chrome_installer.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\java.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jre-1.8\bin\javacpl.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneMusic_10.19071.19011.0_x64__8wekyb3d8bbwe\Music.UI.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.SkypeApp_14.53.77.0_x64__kzf8qxf38zg5c\SkypeBridge\SkypeBridge.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome_pwa_launcher.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\javaws.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.YourPhone_0.19051.7.0_x64__8wekyb3d8bbwe\YourPhone.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\dotnet\shared\Microsoft.NETCore.App\6.0.27\createdump.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.Brokered.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxAccounts.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\Microsoft.ZuneVideo_10.19071.19011.0_x64__8wekyb3d8bbwe\Video.UI.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Java\jdk-1.8\bin\jps.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\MSOSREC.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\Microsoft Office\root\Office16\NAMECONTROLSERVER.EXE C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\VideoLAN\VLC\vlc.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
File opened for modification C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxOutlook.exe C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A

Enumerates physical storage devices

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe

"C:\Users\Admin\AppData\Local\Temp\4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe"

C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe

C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\628c2327.bat" "

Network

Country Destination Domain Proto
US 8.8.8.8:53 ddos.dnsnb8.net udp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 105.84.221.44.in-addr.arpa udp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 8.8.8.8:53 22.49.80.91.in-addr.arpa udp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 44.221.84.105:799 ddos.dnsnb8.net tcp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/2356-0-0x00000000005B0000-0x00000000005CA000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe

MD5 56b2c3810dba2e939a8bb9fa36d3cf96
SHA1 99ee31cd4b0d6a4b62779da36e0eeecdd80589fc
SHA256 4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07
SHA512 27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

memory/3820-5-0x00000000009C0000-0x00000000009C9000-memory.dmp

memory/2356-7-0x00000000005B0000-0x00000000005CA000-memory.dmp

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\VKYZDMA5\k2[1].rar

MD5 d3b07384d113edec49eaa6238ad5ff00
SHA1 f1d2d2f924e986ac86fdf7b36c94bcdf32beec15
SHA256 b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c
SHA512 0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

C:\Users\Admin\AppData\Local\Temp\65BE0989.exe

MD5 20879c987e2f9a916e578386d499f629
SHA1 c7b33ddcc42361fdb847036fc07e880b81935d5d
SHA256 9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31
SHA512 bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

memory/3820-29-0x00000000009C0000-0x00000000009C9000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\628c2327.bat

MD5 800b07acea49b0959e541e914f97f018
SHA1 057383a3a434867fe9eb296ee33dabea82cca52b
SHA256 bf7b6885b77fb27456d6faf6638f6adae35207ea19e19e9aa9835e637ed7e6b4
SHA512 00e833d57b7195fb89726c7e1d04beeea2258fc8e50ae4243e7879de675506b96c3454b5f3477b9d8bc9ff06d54da13da5d0d1171af9792a5fa1870deff527d2