djvu | b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59

General

Target
b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe
Size 807KB
Sample220325-kten8aabbl
SHA256 b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59
MD5 49735352f75799eb133877c00ce9b75e
SHA1 796b9e7035353181fb9e16cdba938e6bc9075172
SHA512 8baeaa5968bdf00482726735dc68b8c8e649b49392eabc4946c6c5cb17389b2dec717a267987c8166840df917e641bb97c08eedccf38d6227d86df57a05737b3
MD5 SHA1 SHA512

Score

10^/10

djvu ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.uigd
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: 0423Jsfkjn

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/1844-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1844-56-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/964-59-0x0000000001D60000-0x0000000001E7B000-memory.dmp	family_djvu
behavioral1/memory/1844-61-0x0000000000400000-0x0000000000537000-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 964 set thread context of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1900	1844	WerFault.exe	27

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 964 wrote to memory of 1844	964	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	27
PID 1844 wrote to memory of 1900	1844	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	28
PID 1844 wrote to memory of 1900	1844	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	28
PID 1844 wrote to memory of 1900	1844	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	28
PID 1844 wrote to memory of 1900	1844	b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe	28

C:\Users\Admin\AppData\Local\Temp\b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe
"C:\Users\Admin\AppData\Local\Temp\b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:964
- C:\Users\Admin\AppData\Local\Temp\b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe
  "C:\Users\Admin\AppData\Local\Temp\b981a1b3db85e9ae44a79f66ecbced67088bda1089fe799d0bcb8dc7c7882b59.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1844
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1844 -s 192
    3⤵
    - Program crash
    PID:1900

Network

MITRE ATT&CK Matrix

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Downloads

memory/964-54-0x0000000000500000-0x0000000000592000-memory.dmp

Download

memory/964-58-0x0000000000500000-0x0000000000592000-memory.dmp

Download

memory/964-59-0x0000000001D60000-0x0000000001E7B000-memory.dmp

Download

memory/1844-55-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1844-60-0x0000000075E61000-0x0000000075E63000-memory.dmp

Download

memory/1844-61-0x0000000000400000-0x0000000000537000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads