djvu | a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803

Analysis

max time kernel
148s
max time network
147s
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, 12:36

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General

Target
a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe
Size 702KB
Sample260809-ps33msxglc
SHA256 a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803
MD5 0a71da83060da9e4fffb05b88dc7e457
SHA1 864bcc7ad44100dd602f089969802eff5830c1ad
SHA512 956f1ea296b93f9bc7b6ce9f22cb76213de88528f28ae5a0a03c1ed1d40e816a57861e4e4bc60085bcb67bff341819afd3e3283a32e32ca7e8db6b28ddc27d86
SSDEEP 12288:aJON9tMho1RxtESImBxBt/qp3J0eDEzcLie/4lOOg/R78ECyDM6JdGA:COlSizIm7m3J0sE0j4EJ5aNSdGA
TLSH
T1D2E4121069A1D572EE47A578195CC7C07F3B3532AA328D4BB3586B9EFE716C0FA24342
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery djvu ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test2/get.php

Attributes

extension
.bgzq
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.com/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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0864PsawqS

rsa_pubkey.plain

Signatures

Family: Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Detected Djvu ransomware 2 IoCs

resource	yara_rule
behavioral2/memory/1196-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp	family_djvu
behavioral2/memory/5992-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1196 set thread context of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89

System Location Discovery: System Language Discovery 1 TTPs 1 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	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89
PID 1196 wrote to memory of 5992	1196	a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe	89

C:\Users\Admin\AppData\Local\Temp\a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe
"C:\Users\Admin\AppData\Local\Temp\a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe
  "C:\Users\Admin\AppData\Local\Temp\a4ecbf9d395be341a8a4e042bab9679d4ee6e43f9f9cf1690d88bf277ef09803.exe"
  2⤵
  PID:5992

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1196-1-0x0000000004910000-0x00000000049B0000-memory.dmp

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memory/1196-2-0x0000000004B10000-0x0000000004C2B000-memory.dmp

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memory/5992-4-0x0000000000400000-0x0000000000537000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads