bdaejec | e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b

Analysis

max time kernel
148s
max time network
127s
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, 04:32

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General

Target
e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe
Size 792KB
Sample260824-e6cshashmc
SHA256 e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b
MD5 f4ec645f9913bad813e8ba65aa80fffb
SHA1 22695d4ad274b1e138fa001aa13f817f049bedc1
SHA512 9d5d0b60f836c631898ffabf429b0e889cfd434c4026d654c889409b0cd957cf40106873844475395f14d1b09785d1f859342433e7f5da7ef311d9711deaab8d
SSDEEP 12288:9JyhvSoASz2HynMKZakVgKnZ2tPo/gwKlHQCPsdcTLyOoxX2ziHX/j6zbioo:9MAUKynM/kVgdaIdGC+cTqHvjvf
TLSH
T1CF0523352751C432C25816B2F92AA2B1671D7431AAB54943FFA21B3FAF11391EBF234D
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/5772-10-0x00000000023B0000-0x00000000024CB000-memory.dmp	family_djvu
behavioral2/memory/4768-11-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral2/memory/5856-15-0x00000000004B0000-0x00000000004B9000-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/0x0008000000016cdb-4.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
5856	cpKwBd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5772 set thread context of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseAP.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\rmiregistry.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\orbd.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\DATABASECOMPARE.EXE	cpKwBd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\WORDICON.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\filecompare.exe	cpKwBd.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseSampleUploader.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\pack200.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DWTRIG20.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe	cpKwBd.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\vlc-cache-gen.exe	cpKwBd.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\Browser\WCChromeExtn\WCChromeNativeMessagingHost.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\java-rmi.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\WINWORD.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jcmd.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\ktab.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmid.exe	cpKwBd.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\maintenanceservice.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jps.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\policytool.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\rmiregistry.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\updater.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Windows Mail\wabmig.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\keytool.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SkypeSrv\SKYPESERVER.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\IntegratedOffice.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\klist.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\VPREVIEW.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseIR.exe	cpKwBd.exe
File opened for modification	C:\Program Files (x86)\Google\GoogleUpdater\141.0.7340.0\disabledupdater.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\orbd.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\tnameserv.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\AppSharingHookController.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Mozilla Firefox\plugin-container.exe	cpKwBd.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wab.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jjs.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\native2ascii.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\kinit.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\notification_helper.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\servertool.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\java.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jabswitch.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\kinit.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE	cpKwBd.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\uninstall.exe	cpKwBd.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.SecHealthUI_1000.26100.1.0_x64__8wekyb3d8bbwe\SecHealthUI.exe	cpKwBd.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	cpKwBd.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jdeps.exe	cpKwBd.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
1612	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	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cpKwBd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 5772 wrote to memory of 5856	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	89
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5772 wrote to memory of 4768	5772	e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe	91
PID 5856 wrote to memory of 1612	5856	cpKwBd.exe	93

C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe
"C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5772
- C:\Users\Admin\AppData\Local\Temp\cpKwBd.exe
  C:\Users\Admin\AppData\Local\Temp\cpKwBd.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5856
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\7fea2416.bat" "
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:1612
- C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe
  "C:\Users\Admin\AppData\Local\Temp\e61a99a0c183923e18d2fbad7188e4dd52157bbaf087423adfd16e9a77c6208b.exe"
  2⤵
  PID:4768

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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7fea2416.bat

Path C:\Users\Admin\AppData\Local\Temp\7fea2416.bat
Size 187B
SHA256 d7bfbfd34ae2a56f165fa03ceb9c902a8c449ca2df940ab4770aeebd26f26139
MD5 b7f1130b73024ee7a65698a386184c0b
SHA1 977ab93ad26fbafc79e5b6df87c08774912be398
SHA512 2587d3a8db92b577394f6e7b5f0abb33dbdfe0f01d7c70999be1e5df777f33af21cee3f7a3e51e8e331b92558b5759789a98ece7d2507bf32759e8200aa5f7ff
TLSH
T1FBC012628286CA6E18A4902B0AF1658DD06608AC3FE93B355F31E45C61A680FBAD7381
MD5 SHA1 SHA512 TLSH

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cpKwBd.exe

Path C:\Users\Admin\AppData\Local\Temp\cpKwBd.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/4768-11-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/5772-0-0x0000000000400000-0x000000000050B000-memory.dmp

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memory/5772-9-0x00000000021E0000-0x000000000227C000-memory.dmp

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memory/5772-10-0x00000000023B0000-0x00000000024CB000-memory.dmp

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memory/5772-14-0x0000000000400000-0x000000000050B000-memory.dmp

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memory/5856-5-0x00000000004B0000-0x00000000004B9000-memory.dmp

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memory/5856-15-0x00000000004B0000-0x00000000004B9000-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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