bdaejec | 875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1

Analysis

max time kernel
148s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
24/08/2026, 05:15

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General

Target
875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe
Size 792KB
Sample260824-fxvsdstalg
SHA256 875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1
MD5 51d4f6e858bdd889aa68e41531250e18
SHA1 0eac307a1461a6fa04f39614cbc5e95c51b63486
SHA512 288af1bd4620d24c04624efc4a98133607909c57239b16f5b02cb91180ccdbb16439e3c417b7a6dd6c22b5484176771f33fca158c64cafecdfe250fd020dec99
SSDEEP 12288:wy3kn9hr8AtHy3x5iY49L5FaeEpzalM9D6IwmZMKDPz/DLSfyyofrpqcQD:w3nXvS3yDlgrjwmZpz/DLRHvQ
TLSH
T1F40523166660D4B2C5F2B831B929C6F3A9BAB43584245D43B3E1176E4F30782FFB570A
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 backdoor discovery execution bdaejec djvu ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.mmuz
offline_id
dYUDKE4rrBmSPsf8srHMsyP40jle9uyxDDCfdxt1
payload_url
http://zerit.top/dl/build2.exe

http://fuyt.org/files/1/build3.exe
ransomnote
ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-NdDG3HIUZp Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0428Jsfkjn

rsa_pubkey.plain

Extracted

Family

bdaejec

ddos.dnsnb8.net

Signatures

Family: Bdaejec
Bdaejec is a backdoor written in C++.
backdoor bdaejec
Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Detected Djvu ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/5324-9-0x0000000002460000-0x000000000257B000-memory.dmp	family_djvu
behavioral2/memory/5840-10-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral2/memory/4124-15-0x00000000001F0000-0x00000000001F9000-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/0x000600000000697a-4.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
4124	fTObFt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5324 set thread context of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Integrator.exe	fTObFt.exe
File opened for modification	C:\Program Files\Mozilla Firefox\pingsender.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jcmd.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\servertool.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseTVM.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoadfsb.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoasb.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\POWERPNT.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jps.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SCANPST.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	fTObFt.exe
File opened for modification	C:\Program Files\Windows Defender\MpDefenderCoreService.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\NAMECONTROLSERVER.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe	fTObFt.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseIR.exe	fTObFt.exe
File opened for modification	C:\Program Files\7-Zip\Uninstall.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jinfo.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoev.exe	fTObFt.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice_installer.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jmap.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\Office16\OSPPREARM.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTEM.EXE	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jconsole.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\misc.exe	fTObFt.exe
File opened for modification	C:\Program Files\Mozilla Firefox\plugin-container.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\kinit.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javaw.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe	fTObFt.exe
File opened for modification	C:\Program Files\Windows Defender\ConfigSecurityPolicy.exe	fTObFt.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SecHealthUI_1000.26100.1.0_x64__8wekyb3d8bbwe\SecHealthUI.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\32BitMAPIBroker.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe	fTObFt.exe
File opened for modification	C:\Program Files\7-Zip\7zFM.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jjs.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Mashup.Container.NetFX40.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE	fTObFt.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseCM.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\reader_sl.exe	fTObFt.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\createdump.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrServicesUpdater.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe	fTObFt.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\unpack200.exe	fTObFt.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\protocolhandler.exe	fTObFt.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe	fTObFt.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 1 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4564	cmd.exe

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	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fTObFt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5324 wrote to memory of 4124	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	88
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 5324 wrote to memory of 5840	5324	875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe	89
PID 4124 wrote to memory of 4564	4124	fTObFt.exe	91

C:\Users\Admin\AppData\Local\Temp\875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe
"C:\Users\Admin\AppData\Local\Temp\875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5324
- C:\Users\Admin\AppData\Local\Temp\fTObFt.exe
  C:\Users\Admin\AppData\Local\Temp\fTObFt.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4124
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6fcf28cf.bat" "
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4564
- C:\Users\Admin\AppData\Local\Temp\875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe
  "C:\Users\Admin\AppData\Local\Temp\875ef5b3053d4d322471a9a9c0a7ea0b44c75178add2bb43ac4619ec78209cf1.exe"
  2⤵
  PID:5840

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

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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6fcf28cf.bat

Path C:\Users\Admin\AppData\Local\Temp\6fcf28cf.bat
Size 187B
SHA256 0cb77f2ed367d14daa2c739b54325e1b31a46742042097da550bd6f7a39f801c
MD5 bc7475485e7737a2151b34e659638d4a
SHA1 79a834b99ce7ca05a51edc30b8fb8ad87c6ff16a
SHA512 a98bd8f180b4e4cbb13fcfc97622a5ae29a9695bd3290d77d3c58bf10455abdb41c2ee40cd57f6605302c04ad1ecf93eaf0cd17ebca7e7c9b5b425ab17258eb5
TLSH
T1E3C012018196C65D18D4602F06E1714CC46549EC3F8AEF158B20885C629A40DB9D3381
MD5 SHA1 SHA512 TLSH

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fTObFt.exe

Path C:\Users\Admin\AppData\Local\Temp\fTObFt.exe
Size 15KB
SHA256 4485df22c627fa0bb899d79aa6ff29bc5be1dbc3caa2b7a490809338d54b7794
MD5 f7d21de5c4e81341eccd280c11ddcc9a
SHA1 d4e9ef10d7685d491583c6fa93ae5d9105d815bd
SHA512 e4553b86b083996038bacfb979ad0b86f578f95185d8efac34a77f6cc73e491d4f70e1449bbc9eb1d62f430800c1574101b270e1cb0eeed43a83049a79b636a3
SSDEEP 384:IXZQaD7U8iu4YsAa7ZA0UvH2lsRv21yW7GbAxur6+Y9PffPz:gQGPL4vzZq2o9W7GsxBbPr
TLSH
T1A462BFB34FC098FFC4CD353341853687CB7B4670DABA617F826288372895E19AC55495
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/4124-5-0x00000000001F0000-0x00000000001F9000-memory.dmp

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memory/4124-15-0x00000000001F0000-0x00000000001F9000-memory.dmp

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memory/5324-0-0x0000000000400000-0x000000000050A000-memory.dmp

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memory/5324-8-0x00000000023C0000-0x0000000002451000-memory.dmp

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memory/5324-9-0x0000000002460000-0x000000000257B000-memory.dmp

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memory/5324-14-0x00000000023C0000-0x0000000002451000-memory.dmp

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memory/5324-13-0x0000000000400000-0x000000000050A000-memory.dmp

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memory/5840-10-0x0000000000400000-0x0000000000537000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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