bdaejec | 63d0cabdd7dfd16533e638fec454046f7c40d86c82ed18219fe650a05fc987a2

Analysis

max time kernel
140s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-12-2024 17:50

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General

Target

DNS优选.exe
Size

442KB
MD5

3076d52ddbfd6fa18fb733c33cabc7c0
SHA1

c4d19dc3a0c14d7a7331d2f8905a6458947643fa
SHA256

392dd99265a41721a08aaa83b0e15baa3667da6ed37b968a257a790b4961f9af
SHA512

71d1e2489f2e62066b07d1e3cf82df64174586341973c339f9f672dfec3573fdee327f637cc2cac5f9f778f0e4bf20eea8eadd452d9c09d69fc9cfddaf0fdf13
SSDEEP

12288:z9xs1oCKbeloQd0F+zUoIBECole5NpAoS:z9eHHaF+zUoIBEC

Score

10^/10

bdaejec aspackv2 backdoor discovery upx

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
behavioral2/memory/3992-39-0x0000000000B80000-0x0000000000B89000-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
behavioral2/files/0x00040000000229c7-3.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	CvljRR.exe

Executes dropped EXE 1 IoCs

pid	Process
3992	CvljRR.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2836-0-0x0000000000400000-0x0000000000554000-memory.dmp	upx
behavioral2/memory/2836-43-0x0000000000400000-0x0000000000554000-memory.dmp	upx
behavioral2/memory/2836-44-0x0000000000400000-0x0000000000554000-memory.dmp	upx
behavioral2/memory/2836-45-0x0000000000400000-0x0000000000554000-memory.dmp	upx

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	CvljRR.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.WebMediaExtensions_1.0.20875.0_x64__8wekyb3d8bbwe\Microsoft.WebMediaExtensions.exe	CvljRR.exe
File opened for modification	C:\Program Files (x86)\Google\Update\Download\{8A69D345-D564-463C-AFF1-A69D9E530F96}\123.0.6312.123\chrome_installer.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javaw.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\pack200.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java-rmi.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoasb.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javaw.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmid.exe	CvljRR.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javaws.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\unpack200.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\ssvagent.exe	CvljRR.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	CvljRR.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE	CvljRR.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jjs.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\wsgen.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE	CvljRR.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\schemagen.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\orbd.exe	CvljRR.exe
File opened for modification	C:\Program Files (x86)\Google\Update\1.3.36.371\GoogleUpdateOnDemand.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\orbd.exe	CvljRR.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Getstarted_8.2.22942.0_x64__8wekyb3d8bbwe\WhatsNew.Store.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\EXCEL.EXE	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe	CvljRR.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice.exe	CvljRR.exe
File opened for modification	C:\Program Files\Windows Mail\wab.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\kinit.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jp2launcher.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\protocolhandler.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	CvljRR.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jjs.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msotd.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jhat.exe	CvljRR.exe
File opened for modification	C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_16005.11629.20316.0_x64__8wekyb3d8bbwe\HxCalendarAppImm.exe	CvljRR.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoia.exe	CvljRR.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Office.OneNote_16001.12026.20112.0_x64__8wekyb3d8bbwe\onenoteim.exe	CvljRR.exe
File opened for modification	C:\Program Files\Windows Photo Viewer\ImagingDevices.exe	CvljRR.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.MixedReality.Portal_2000.19081.1301.0_x64__8wekyb3d8bbwe\MixedRealityPortal.exe	CvljRR.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Windows.Photos_2019.19071.12548.0_x64__8wekyb3d8bbwe\Microsoft.Photos.exe	CvljRR.exe
File opened for modification	C:\Program Files\7-Zip\Uninstall.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe	CvljRR.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jcmd.exe	CvljRR.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	CvljRR.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\notification_helper.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	CvljRR.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\EQUATION\eqnedt32.exe	CvljRR.exe
File opened for modification	C:\Program Files\Mozilla Firefox\uninstall\helper.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\keytool.exe	CvljRR.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\serialver.exe	CvljRR.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	CvljRR.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DNS优选.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2836	DNS优选.exe
2836	DNS优选.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 3992	2836	DNS优选.exe	85
PID 2836 wrote to memory of 3992	2836	DNS优选.exe	85
PID 2836 wrote to memory of 3992	2836	DNS优选.exe	85
PID 3992 wrote to memory of 976	3992	CvljRR.exe	88
PID 3992 wrote to memory of 976	3992	CvljRR.exe	88
PID 3992 wrote to memory of 976	3992	CvljRR.exe	88

C:\Users\Admin\AppData\Local\Temp\DNS优选.exe
"C:\Users\Admin\AppData\Local\Temp\DNS优选.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2836
- C:\Users\Admin\AppData\Local\Temp\CvljRR.exe
  C:\Users\Admin\AppData\Local\Temp\CvljRR.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:3992
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\492b41e5.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    PID:976

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\6IJLDY7V\k2[1].rar

Filesize
4B

MD5
d3b07384d113edec49eaa6238ad5ff00

SHA1
f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

SHA256
b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

SHA512
0cf9180a764aba863a67b6d72f0918bc131c6772642cb2dce5a34f0a702f9470ddc2bf125c12198b1995c233c34b4afd346c54a2334c350a948a51b6e8b4e6b6

Download Submit
C:\Users\Admin\AppData\Local\Temp\492b41e5.bat

Filesize
187B

MD5
027554f51f767e9a2beb8a9c46cbf624

SHA1
38f726557a1e764f4a0580ad6c0e9b61947d115a

SHA256
b5f9615fc7dfdbf6a524f5b4f09cd2849b86950632a6507d089c83af8b6128a4

SHA512
d053b7c2985b83f50d1541652d96cd110fa7de7cce85133e5a44c2327c86c492efa9477d70668fcb80d21197985a038b7c554f93ca484c7793a1a19d3c7c571f

Download Submit
C:\Users\Admin\AppData\Local\Temp\747535B1.exe

Filesize
4B

MD5
20879c987e2f9a916e578386d499f629

SHA1
c7b33ddcc42361fdb847036fc07e880b81935d5d

SHA256
9f2981a7cc4d40a2a409dc895de64253acd819d7c0011c8e80b86fe899464e31

SHA512
bcdde1625364dd6dd143b45bdcec8d59cf8982aff33790d390b839f3869e0e815684568b14b555a596d616252aeeaa98dac2e6e551c9095ea11a575ff25ff84f

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

Filesize
15KB

MD5
56b2c3810dba2e939a8bb9fa36d3cf96

SHA1
99ee31cd4b0d6a4b62779da36e0eeecdd80589fc

SHA256
4354970ccc7cd6bb16318f132c34f6a1b3d5c2ea7ff53e1c9271905527f2db07

SHA512
27812a9a034d7bd2ca73b337ae9e0b6dc79c38cfd1a2c6ac9d125d3cc8fa563c401a40d22155811d5054e5baa8cf8c8e7e03925f25fa856a9ba9dea708d15b4e

Download Submit
memory/2836-0-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2836-43-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2836-44-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/2836-45-0x0000000000400000-0x0000000000554000-memory.dmp

Filesize
1.3MB

Download
memory/3992-4-0x0000000000B80000-0x0000000000B89000-memory.dmp

Filesize
36KB

Download
memory/3992-39-0x0000000000B80000-0x0000000000B89000-memory.dmp

Filesize
36KB

Download