djvu | 4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3

General

Target
4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe
Size 775KB
Sample220328-gx614aged8
SHA256 4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3
MD5 a3c739cbbc4975c6210322b1edd0d89e
SHA1 3fdfbb067fc4f8fb6c2797963c8508aff46e13a2
SHA512 dba215f823d2f752915dc90d65ceb69d5cbebd037f356d9e00825909bf2af06b25f7cfc58b6a1a93a3d80d6e0df33d9fe7472502f1b5b74b4ab9b23535064027
MD5 SHA1 SHA512

Score

10^/10

djvu ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes

extension
.mmuz
offline_id
dYUDKE4rrBmSPsf8srHMsyP40jle9uyxDDCfdxt1
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-NdDG3HIUZp 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: 0428Jsfkjn

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 4 IoCs

resource	yara_rule
behavioral2/memory/1904-134-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1904-135-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4028-137-0x00000000023A0000-0x00000000024BB000-memory.dmp	family_djvu
behavioral2/memory/1904-138-0x0000000000400000-0x0000000000537000-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 4028 set thread context of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3212	1904	WerFault.exe	83

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83
PID 4028 wrote to memory of 1904	4028	4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe	83

C:\Users\Admin\AppData\Local\Temp\4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe
"C:\Users\Admin\AppData\Local\Temp\4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4028
- C:\Users\Admin\AppData\Local\Temp\4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe
  "C:\Users\Admin\AppData\Local\Temp\4f91cc5fef6093b6ccae6c91e02484dc33174df7d0e439fefe5f9b9171e388e3.exe"
  2⤵
  PID:1904
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1904 -s 536
    3⤵
    - Program crash
    PID:3212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1904 -ip 1904
1⤵
PID:3132

Network

MITRE ATT&CK Matrix

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Downloads

memory/1904-134-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1904-135-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1904-138-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4028-136-0x0000000002300000-0x0000000002391000-memory.dmp

Download

memory/4028-137-0x00000000023A0000-0x00000000024BB000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads