bdaejec | 4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553

Analysis

max time kernel
108s
max time network
102s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2024 20:40

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General

Target

4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe
Size

91KB
MD5

c9fcda4385f7ce27f2d1373d8271bb10
SHA1

72fcc97bb3501b026050adcc356862c1021a4a80
SHA256

4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553
SHA512

bea0e9c96620f5add256efc2e51e83b42efb5f5073c5a2af344028aa4f21c9164426958c4d7c195bac7a864f133b2f82867828fef4662890efe94df0d9fdd5f2
SSDEEP

1536:jiq1GxAg85me0rfAJMsa2tjdMF4O7WV2XmatGCq2iW7z:jiqExAf5me0rfAJMsa2hyRWV2vtGCH

Score

10^/10

bdaejec aspackv2 backdoor discovery

Malware Config

Extracted

Family

bdaejec

ddos.dnsnb8.net

Signatures

Bdaejec
Bdaejec is a backdoor written in C++.
backdoor bdaejec
Bdaejec family
bdaejec

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral1/memory/3820-29-0x00000000009C0000-0x00000000009C9000-memory.dmp	family_bdaejec_backdoor

ASPack v2.12-2.42 1 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000c000000023b35-3.dat	aspack_v212_v242

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	tWkrPJ.exe

Executes dropped EXE 1 IoCs

pid	Process
3820	tWkrPJ.exe

Drops file in Program Files directory 64 IoCs

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

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tWkrPJ.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 3820	2356	4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe	84
PID 2356 wrote to memory of 3820	2356	4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe	84
PID 2356 wrote to memory of 3820	2356	4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe	84
PID 3820 wrote to memory of 5052	3820	tWkrPJ.exe	101
PID 3820 wrote to memory of 5052	3820	tWkrPJ.exe	101
PID 3820 wrote to memory of 5052	3820	tWkrPJ.exe	101

C:\Users\Admin\AppData\Local\Temp\4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe
"C:\Users\Admin\AppData\Local\Temp\4b27879fd8ec98d3de9c84efb01ae3a6bcef0ba1bc9a7238d7279e9b2a9ff553N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe
  C:\Users\Admin\AppData\Local\Temp\tWkrPJ.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3820
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\628c2327.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:5052

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

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

Filesize
187B

MD5
800b07acea49b0959e541e914f97f018

SHA1
057383a3a434867fe9eb296ee33dabea82cca52b

SHA256
bf7b6885b77fb27456d6faf6638f6adae35207ea19e19e9aa9835e637ed7e6b4

SHA512
00e833d57b7195fb89726c7e1d04beeea2258fc8e50ae4243e7879de675506b96c3454b5f3477b9d8bc9ff06d54da13da5d0d1171af9792a5fa1870deff527d2

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

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

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

Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

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

Filesize
104KB

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

Filesize
104KB

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

Filesize
36KB

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

Filesize
36KB

Download