djvu | bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505

General

Target
bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe
Size 809KB
Sample220325-kten8adef2
SHA256 bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505
MD5 9573f49bb7eb719e42406029044e236c
SHA1 93b7acf6d2ed50ac8ae1780da53a97a910fe278a
SHA512 534000706e045bce9c88c7ff725160004cdabd5f76ae59992cd28170cb34b6f95b5148e58ad0e4a604a861e41f7f3485ca9ec401311b3f73d8d3f91cb90ec2ca
MD5 SHA1 SHA512

Score

10^/10

djvu ransomware

Malware Config

Extracted

Family

djvu

C2

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

Signatures

Detected Djvu ransomware 4 IoCs

resource	yara_rule
behavioral2/memory/4536-135-0x00000000021E0000-0x00000000022FB000-memory.dmp	family_djvu
behavioral2/memory/1808-137-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1808-138-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1808-139-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4536 set thread context of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2040	1808	WerFault.exe	89

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89
PID 4536 wrote to memory of 1808	4536	bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe	89

C:\Users\Admin\AppData\Local\Temp\bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe
"C:\Users\Admin\AppData\Local\Temp\bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Local\Temp\bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe
  "C:\Users\Admin\AppData\Local\Temp\bf4dcafe30c748d3ae356dacaee3c6d33d949e6a6c53dec1f5fd4ea12d77b505.exe"
  2⤵
  PID:1808
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1808 -s 536
    3⤵
    - Program crash
    PID:2040

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 1808 -ip 1808
1⤵
PID:4724

Network

MITRE ATT&CK Matrix

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Downloads

memory/1808-137-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1808-138-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1808-139-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4536-134-0x000000000214D000-0x00000000021DF000-memory.dmp

Download

memory/4536-135-0x00000000021E0000-0x00000000022FB000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads