djvu | 123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c

Analysis

max time kernel
148s
max time network
125s
platform
windows11-ltsc_2024_x64
resource
win11ltsc2024-20260709-en
resource tags

arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
submitted
31/07/2026, 15:17

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General

Target
123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe
Size 757KB
Sample260731-spcytsvgnf
SHA256 123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c
MD5 045188bade8c7af9746904044a40a479
SHA1 93fa651cb180f32a4ed2586b0cc8b9ed3be11e2b
SHA512 401f7667cbf1f5a5882636a5e4151f6eb336ad9ce79b40873ff928211427e9965d4f1e9e83ea5d2eb0d0204924869655eef460d2f2a0fbc2a8db5b0cd5329546
SSDEEP 12288:F6SBJg1u6wjxTImI/xe2/9NPCkUaIZVvttchXWWg5Yb7PlvFUQLe7e+SOKLJZlr:FnOM6wxImI/Fpqai05nXRXejc7lr
TLSH
T161F4010135E3C472E3FAA5765431D7B00E77BBA3A933598E5AD817790F286C29E6031B
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

discovery djvu ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.cdqw
offline_id
mMsRxMUuXypapZbGOAfxD9pczHmW8zVRP7Pgjwt1
payload_url
http://brusuax.com/dl/build2.exe

http://zexeq.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. You can get and look video overview decrypt tool: https://we.tl/t-99MNqXMrdS Price of private key and decrypt software is $1999. Discount 50% available if you contact us first 72 hours, that's price for you is $999. 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: 0840ASdw

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/4920-2-0x0000000002470000-0x000000000258B000-memory.dmp	family_djvu
behavioral2/memory/2428-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.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	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89
PID 4920 wrote to memory of 2428	4920	123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe	89

C:\Users\Admin\AppData\Local\Temp\123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe
"C:\Users\Admin\AppData\Local\Temp\123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4920
- C:\Users\Admin\AppData\Local\Temp\123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe
  "C:\Users\Admin\AppData\Local\Temp\123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe"
  2⤵
  PID:2428

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/2428-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4920-1-0x00000000021A0000-0x0000000002236000-memory.dmp

Download

memory/4920-2-0x0000000002470000-0x000000000258B000-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