bdaejec | 91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99

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
09/08/2026, 10:57

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General

Target
91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe
Size 791KB
Sample260809-m2pkhawfka
SHA256 91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99
MD5 29b22221fa28a43afd45dc065f20ae45
SHA1 9ce6c44050d1e27e5389fa446662364668fb7143
SHA512 f5dca9ab72e3dd4b8f02450191bccd23d225c952fe6e378b64cac9b5f7b1d616c3e94456ed5622bd61ab70ded9beb4974ef14bdcbb95618b7160922902784cbb
SSDEEP 12288:HihECdP0PJ1p1zcafEuQn8LK0ZHhJSSy7SVRDwx1afWmoa81x4YMhvoqa:CPA38Fn78Hzy7ekx1afc1uyF
TLSH
T139050210BB80D035E9B712F049BB93ACB52E76605B78A0CB66D51BEB52347D4ED3131B
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
.wdlo
offline_id
i0fXrUHVihm5xsI9Icg243YMPJqd748Ocimkyjt1
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-0S984cQ4B3 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: 0430JIjdm

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/1236-11-0x0000000002360000-0x000000000247B000-memory.dmp	family_djvu
behavioral2/memory/5936-10-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Detects Bdaejec Backdoor. 1 IoCs

Bdaejec is backdoor written in C++.

resource	yara_rule
behavioral2/memory/5408-15-0x00000000001A0000-0x00000000001A9000-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/0x0006000000016b3a-6.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
5408	sRTgb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1236 set thread context of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.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\jhat.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jstat.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SELFCERT.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\EQUATION\eqnedt32.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jinfo.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\policytool.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\orbd.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ONENOTE.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseGPParser.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\orbd.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVLP.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\pack200.exe	sRTgb.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.15\createdump.exe	sRTgb.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office 15\ClientX64\OfficeClickToRun.exe	sRTgb.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevated_tracing_service.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\ssvagent.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javaws.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\javacpl.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\AppVDllSurrogate64.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OLCFG.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\keytool.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\rmiregistry.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\orbd.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSQRY32.EXE	sRTgb.exe
File opened for modification	C:\Program Files\WindowsApps\Microsoft.Edge.GameAssist_1.0.3456.0_x64__8wekyb3d8bbwe\EdgeGameAssist.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\misc.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msoev.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\MSOXMLED.EXE	sRTgb.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroRd32Info.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javapackager.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\GRAPH.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOHTMED.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Windows Defender Advanced Threat Protection\SenseIdentity.exe	sRTgb.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\chrmstp.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\jp2launcher.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\Wordconv.exe	sRTgb.exe
File opened for modification	C:\Program Files\Windows Defender\NisSrv.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\javacpl.exe	sRTgb.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\AcroLayoutRecognizer\AcroLayoutRecognizer.exe	sRTgb.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\LogTransport2.exe	sRTgb.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\140.0.7339.81\Installer\setup.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\jre\bin\kinit.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PDFREFLOW.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\DCF\SPREADSHEETCOMPARE.EXE	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\extcheck.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\tnameserv.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\xjc.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\CLVIEW.EXE	sRTgb.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\arh.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java-rmi.exe	sRTgb.exe
File opened for modification	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\7.0.16\createdump.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	sRTgb.exe
File opened for modification	C:\Program Files\Mozilla Firefox\default-browser-agent.exe	sRTgb.exe
File opened for modification	C:\Program Files\Mozilla Firefox\firefox.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javadoc.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\serialver.exe	sRTgb.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SDXHelperBgt.exe	sRTgb.exe
File opened for modification	C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\wow_helper.exe	sRTgb.exe
File opened for modification	C:\Program Files\Java\jre-1.8\bin\jp2launcher.exe	sRTgb.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
1876	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	sRTgb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 5408	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	88
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 1236 wrote to memory of 5936	1236	91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe	90
PID 5408 wrote to memory of 1876	5408	sRTgb.exe	92

C:\Users\Admin\AppData\Local\Temp\91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe
"C:\Users\Admin\AppData\Local\Temp\91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1236
- C:\Users\Admin\AppData\Local\Temp\sRTgb.exe
  C:\Users\Admin\AppData\Local\Temp\sRTgb.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Program Files directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5408
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\043e42dd.bat" "
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    PID:1876
- C:\Users\Admin\AppData\Local\Temp\91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe
  "C:\Users\Admin\AppData\Local\Temp\91dcc81e8257de71a0d162f5b02654ce2895518a08112bb8c0ef764d575f1b99.exe"
  2⤵
  PID:5936

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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043e42dd.bat

Path C:\Users\Admin\AppData\Local\Temp\043e42dd.bat
Size 185B
SHA256 eabb1517bc9c0d1ffb824523237eb3f350aae728b509539f11d704ca4cee7344
MD5 2c9922c5a27a00b5d381b1fddf3bbd79
SHA1 6c21ed6aeab1f6283cbce2514766e96a9fdfc282
SHA512 f317e62c0fa61df31486af71db9ec63a6f4a1e26f530ec73dc9be3965595446512fd66eca898322a91bb41f33a43606935e34215c13ffa25982369aec46471c8
TLSH
T11EC0124181C6C69A1454502706F1714CD166285C3B5A6B219B30C85CA1A641DB5D3301
MD5 SHA1 SHA512 TLSH

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sRTgb.exe

Path C:\Users\Admin\AppData\Local\Temp\sRTgb.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/1236-0-0x0000000000400000-0x00000000004F2000-memory.dmp

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memory/1236-11-0x0000000002360000-0x000000000247B000-memory.dmp

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memory/1236-14-0x0000000000400000-0x00000000004F2000-memory.dmp

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memory/1236-9-0x0000000002290000-0x000000000232F000-memory.dmp

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memory/5408-5-0x00000000001A0000-0x00000000001A9000-memory.dmp

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memory/5408-15-0x00000000001A0000-0x00000000001A9000-memory.dmp

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memory/5936-10-0x0000000000400000-0x0000000000537000-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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