bdaejec | d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391

Analysis

max time kernel
150s
max time network
134s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
09/08/2026, 10:19

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General

Target
d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe
Size 825KB
Sample260809-mch2esdm8z
SHA256 d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391
MD5 44a433365d505523abf954a74b4c1343
SHA1 62f403f1550a6d9534c226dcf06ef80802070510
SHA512 edbc7180ce265feb1bd6edc8f3929d2dd8473f4ef50fbdd0decec524666cd725efe1cab446fd2af542d1e4b761295c906953690757ac86f7bbd7a0f299164f6a
SSDEEP 12288:gvuSV90FUjXlq5wltoyRrFPiOIA8PGm5twpzx3Z9Sdd3anwcyy:gvx+FUjXgUJ9iOwr5U39jwNy
TLSH
T1640522627571C4B2E9AA4530B120EBA26BFF75301879C00B3FB44BAD1D613D1E6B670B
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
.eyrv
offline_id
1WQ4dDSY8AVihbECj8VLUDhHWpSCoV5it0bIDjt1
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-kilPVod4em 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: 0420Jsfkjn

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/3040-42-0x00000000023A0000-0x00000000024BB000-memory.dmp	family_djvu
behavioral2/memory/3344-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral2/memory/3216-47-0x0000000000D10000-0x0000000000D19000-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/0x0012000000016db3-4.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
3216	akBiYx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3040 set thread context of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SCANPST.EXE	akBiYx.exe
File opened for modification	C:\Program Files (x86)\Mozilla Maintenance Service\Uninstall.exe	akBiYx.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\chrome_proxy.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstatd.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jp2launcher.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\Common.ShowHelp.exe	akBiYx.exe
File opened for modification	C:\Program Files\Windows Defender\MpCmdRun.exe	akBiYx.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Edge.GameAssist_1.0.3456.0_x64__8wekyb3d8bbwe\EdgeGameAssist.exe	akBiYx.exe
File opened for modification	C:\Program Files\7-Zip\7z.exe	akBiYx.exe
File opened for modification	C:\Program Files\dotnet\dotnet.exe	akBiYx.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\createdump.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jsadebugd.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\wsgen.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\excelcnv.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\misc.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ORGCHART.EXE	akBiYx.exe
File opened for modification	C:\Program Files\Windows Defender\ConfigSecurityPolicy.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\protocolhandler.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\DATABASECOMPARE.EXE	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javafxpackager.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ktab.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Integration\Addons\OneDriveSetup.exe	akBiYx.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseGPParser.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\IEContentService.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE	akBiYx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\wow_helper.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\ktab.exe	akBiYx.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wabmig.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jjs.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\EQUATION\eqnedt32.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe	akBiYx.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\Classification\SenseCE.exe	akBiYx.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\os_update_handler.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\OLicenseHeartbeat.exe	akBiYx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\maintenanceservice.exe	akBiYx.exe
File opened for modification	C:\Program Files (x86)\Windows Defender\MpCmdRun.exe	akBiYx.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\notification_helper.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	akBiYx.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevated_tracing_service.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\wsimport.exe	akBiYx.exe
File opened for modification	C:\Program Files\Windows Defender\NisSrv.exe	akBiYx.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroTextExtractor.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\java.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jjs.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoia.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE	akBiYx.exe
File opened for modification	C:\Program Files\7-Zip\7zG.exe	akBiYx.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	akBiYx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\private_browsing.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelper.exe	akBiYx.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	akBiYx.exe
File opened for modification	C:\Program Files (x86)\Windows Mail\wab.exe	akBiYx.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\XLICONS.EXE	akBiYx.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
4200	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	akBiYx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 3216	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	89
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3040 wrote to memory of 3344	3040	d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe	90
PID 3216 wrote to memory of 4200	3216	akBiYx.exe	92

C:\Users\Admin\AppData\Local\Temp\d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe
"C:\Users\Admin\AppData\Local\Temp\d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\akBiYx.exe
  C:\Users\Admin\AppData\Local\Temp\akBiYx.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3216
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\66fc4396.bat" "
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:4200
- C:\Users\Admin\AppData\Local\Temp\d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe
  "C:\Users\Admin\AppData\Local\Temp\d39ffc528888daec2f64e122a862f9ee8e327d904e7b51a7ce89a5f73432b391.exe"
  2⤵
  PID:3344

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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Downloads

k2[1].rar

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\SD49KLV2\k2[1].rar
Size 1B
SHA256 01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
MD5 68b329da9893e34099c7d8ad5cb9c940
SHA1 adc83b19e793491b1c6ea0fd8b46cd9f32e592fc
SHA512 be688838ca8686e5c90689bf2ab585cef1137c999b48c70b92f67a5c34dc15697b5d11c982ed6d71be1e1e7f7b4e0733884aa97c3f7a339a8ed03577cf74be09
MD5 SHA1 SHA512

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22F922E2.exe

Path C:\Users\Admin\AppData\Local\Temp\22F922E2.exe
Size 1B
SHA256 08f271887ce94707da822d5263bae19d5519cb3614e0daedc4c7ce5dab7473f1
MD5 69691c7bdcc3ce6d5d8a1361f22d04ac
SHA1 c63ae6dd4fc9f9dda66970e827d13f7c73fe841c
SHA512 253405e03b91441a6dd354a9b72e040068b1bfe10e83eb1a64a086c05525d8ccae2bf09130c624af50d55c3522a4fbb7c18cfc8dd843e5f4801d9ad2b5164b12
MD5 SHA1 SHA512

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66fc4396.bat

Path C:\Users\Admin\AppData\Local\Temp\66fc4396.bat
Size 187B
SHA256 eddded9cd11592332a9558652cf56047b07eeeb555827d67ab9576fe2f0be58f
MD5 4d37559daccab7d7cada1222e3f44040
SHA1 e42c03ea35e749b6c64b5a120c43709402e66680
SHA512 4e134fe10f597ae159e65ccbfe42eb09dd755c0fffa8b242eb7fb6afd3e948ee263258ba8fd1427210d0b389fe9057536765c4ab5d7e38891a92bedf55f3d60f
TLSH
T1CCC022018182C3192421001B16E0304DD1320C5C3F882B14DB22CC1D30AA40EF5C3382
MD5 SHA1 SHA512 TLSH

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akBiYx.exe

Path C:\Users\Admin\AppData\Local\Temp\akBiYx.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/3040-0-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/3040-41-0x00000000022B0000-0x000000000234E000-memory.dmp

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memory/3040-42-0x00000000023A0000-0x00000000024BB000-memory.dmp

Download

memory/3040-46-0x0000000000400000-0x00000000004FF000-memory.dmp

Download

memory/3216-5-0x0000000000D10000-0x0000000000D19000-memory.dmp

Download

memory/3216-47-0x0000000000D10000-0x0000000000D19000-memory.dmp

Download

memory/3344-43-0x0000000000400000-0x0000000000537000-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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Downloads