bdaejec | c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8

Analysis

max time kernel
148s
max time network
128s
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, 04:08

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General

Target
c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe
Size 791KB
Sample260824-eqrayscn7t
SHA256 c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8
MD5 faa9d40c1e4e3fd2dcc3f3da18bc7b27
SHA1 86796facbad7e1d2eb6f9b12fd47bd6f472d0c4d
SHA512 4d468092af2b5031fa513d61315d1da653ce689c0a63c35065630daeca0a9d93958310c7e792826965f46336be7bb6e4c090b320e6193d7be8809a7cc936a675
SSDEEP 12288:GDijA9yzMOzv/27zaCCOQLdtDUZxiGMEkRPnu3KGaSDtCCPpn:GW09yRzv+7mCsdtQ/VYuRZCChn
TLSH
T13B0523613B11F032D466043379A6C3E92E2F1D33452A89C77B527BEE8FA17919B617C2
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

aspackv2 backdoor discovery execution bdaejec djvu ransomware

Malware Config

Extracted

Family

djvu

http://fuyt.org/test1/get.php

Attributes

extension
.kkia
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: 0425Jsfkjn

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/1080-10-0x00000000023C0000-0x00000000024DB000-memory.dmp	family_djvu
behavioral2/memory/1504-11-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral2/memory/820-15-0x0000000000120000-0x0000000000129000-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/0x000a00000001b852-4.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
820	AfW.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1080 set thread context of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmic.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmid.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\OLicenseHeartbeat.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmid.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOICONS.EXE	AfW.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\keytool.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe	AfW.exe
File opened for modification	C:\Program Files\Windows Defender\ConfigSecurityPolicy.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	AfW.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\chrome_pwa_launcher.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\ktab.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OLCFG.EXE	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\reader_sl.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstat.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jabswitch.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	AfW.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Eula.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jps.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\policytool.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoasb.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroCEF\RdrCEF.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\ADelRCP.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSYNC.EXE	AfW.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseIdentity.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOUC.EXE	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX64\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	AfW.exe
File opened for modification	C:\Program Files\Windows Defender\Offline\OfflineScannerShell.exe	AfW.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseImdsCollector.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Google\Update\DisabledGoogleUpdate.exe	AfW.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\os_update_handler.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PerfBoost.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\plug_ins\pi_brokers\64BitMAPIBroker.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\CNFNOT32.EXE	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SETLANG.EXE	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AdobeCollabSync.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\kinit.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe	AfW.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\policytool.exe	AfW.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome_proxy.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jrunscript.exe	AfW.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe	AfW.exe
File opened for modification	C:\Program Files\Windows Defender\mpextms.exe	AfW.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseTVM.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroBroker.exe	AfW.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\MpCmdRun.exe	AfW.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	AfW.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.exe	AfW.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
4964	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	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AfW.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 820	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	89
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 1080 wrote to memory of 1504	1080	c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe	90
PID 820 wrote to memory of 4964	820	AfW.exe	92

C:\Users\Admin\AppData\Local\Temp\c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe
"C:\Users\Admin\AppData\Local\Temp\c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Users\Admin\AppData\Local\Temp\AfW.exe
  C:\Users\Admin\AppData\Local\Temp\AfW.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:820
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\6ecf4c32.bat" "
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4964
- C:\Users\Admin\AppData\Local\Temp\c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe
  "C:\Users\Admin\AppData\Local\Temp\c1d38432a5040db8be37ca31b025d1edd42be37799bfd254b3c6e7c4e37937b8.exe"
  2⤵
  PID:1504

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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6ecf4c32.bat

Path C:\Users\Admin\AppData\Local\Temp\6ecf4c32.bat
Size 181B
SHA256 184a931778550b79913b10f436b9321d57e3076a4a69d93fd89f94478b2a4533
MD5 f96c438019fd8716bd26a24663084779
SHA1 47b6a638c4c4bd60cfc37deae07811e0f4a755c2
SHA512 722c59b46f3c97d2710d60cce6676f559a925b48aabfc0f8f0fb7ba46142486a2c5c093cb8547f4413dd9a51ad2d78e90125041265b7f425608664badb947957
TLSH
T1DAC01211C187CA591454501706E5628DC06649583B6A2B215F21846D61A641DB5E7341
MD5 SHA1 SHA512 TLSH

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AfW.exe

Path C:\Users\Admin\AppData\Local\Temp\AfW.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/820-5-0x0000000000120000-0x0000000000129000-memory.dmp

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memory/820-15-0x0000000000120000-0x0000000000129000-memory.dmp

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memory/1080-0-0x0000000000400000-0x000000000050A000-memory.dmp

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memory/1080-9-0x0000000002200000-0x000000000229D000-memory.dmp

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memory/1080-10-0x00000000023C0000-0x00000000024DB000-memory.dmp

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memory/1080-14-0x0000000000400000-0x000000000050A000-memory.dmp

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memory/1504-11-0x0000000000400000-0x0000000000537000-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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