djvu | 4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981

Analysis

max time kernel
150s
max time network
142s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260710-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/07/2026, 11:59

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General

Target
4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
Size 837KB
Sample260731-n5vflascld
SHA256 4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981
MD5 b3757b09ed2150ce857f446c0c61363c
SHA1 04536100a4a8fc27dde91e006f4e2ea6b398b65e
SHA512 c7fb0efb95a96177bcbc50a60f2d900f4f7328a0a98a64ead6fc6e00f52502c904815e1e0a8b309a764c77db1fa65a8e5da5104593e0d987fb6bf3f794a82119
SSDEEP 24576:c3eL/rX2Ev8KDHwSPxDwauHfz/eicEeb+8TYLL:NLz7x7PP+H7e0YfT4
TLSH
T1250522807D54C433E47284744C14CEE1692AB967ABF68B5F3E50BB7B7C322925E26372
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery djvu ransomware

Malware Config

Extracted

Family

djvu

http://cajgtus.com/test1/get.php

Attributes

extension
.watz
offline_id
Lc3VTezPWbMhuVAQFzJUdeA68PwI7UDpc5aKHYt1
payload_url
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/abe121434ad837dd5bdd03878a14485820240531135509/34284d 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: 0874PsawqS

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/1976-2-0x0000000003FC0000-0x00000000040DB000-memory.dmp	family_djvu
behavioral2/memory/4168-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.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	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89
PID 1976 wrote to memory of 4168	1976	4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe	89

C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
"C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe
  "C:\Users\Admin\AppData\Local\Temp\4bb311ba0e479264b1d3c7deab5bfb44b0c1fb100d82aa7d605369b0ac938981.exe"
  2⤵
  PID:4168

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/1976-1-0x0000000003F20000-0x0000000003FB3000-memory.dmp

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memory/1976-2-0x0000000003FC0000-0x00000000040DB000-memory.dmp

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memory/4168-3-0x0000000000400000-0x0000000000537000-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