djvu | f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210

General

Target
f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe
Size 776KB
Sample220324-jsrfysafhl
SHA256 f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210
MD5 39990d1fa1c524bf5cc41edeb1c224b0
SHA1 c458ce4e333205efd9d5a2c6b412887f2b61fb99
SHA512 a32f4b3ccf39ba43fdbd59b166899a32c3ed80364c11fa1fc160d5e4f544dd19ff6b7c1c68b31ea8fc8aaa189a55cca7373f36636b11a24110835c7ac09f7d3f
MD5 SHA1 SHA512

Score

10^/10

djvu ransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/test1/get.php

Attributes

extension
.kkia
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: 0425Jsfkjn

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 4 IoCs

resource	yara_rule
behavioral1/memory/1664-55-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1664-56-0x0000000000424141-mapping.dmp	family_djvu
behavioral1/memory/1768-59-0x0000000001E20000-0x0000000001F3B000-memory.dmp	family_djvu
behavioral1/memory/1664-61-0x0000000000400000-0x0000000000537000-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 1768 set thread context of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1828	1664	WerFault.exe	27

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1768 wrote to memory of 1664	1768	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	27
PID 1664 wrote to memory of 1828	1664	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	28
PID 1664 wrote to memory of 1828	1664	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	28
PID 1664 wrote to memory of 1828	1664	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	28
PID 1664 wrote to memory of 1828	1664	f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe	28

C:\Users\Admin\AppData\Local\Temp\f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe
"C:\Users\Admin\AppData\Local\Temp\f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Users\Admin\AppData\Local\Temp\f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe
  "C:\Users\Admin\AppData\Local\Temp\f787a845e85d35f2ef189d51df495cb9e4dcfaba444c418c931c93d179f64210.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1664
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1664 -s 192
    3⤵
    - Program crash
    PID:1828

Network

MITRE ATT&CK Matrix

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Downloads

memory/1664-55-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1664-60-0x0000000076AC1000-0x0000000076AC3000-memory.dmp

Download

memory/1664-61-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/1768-54-0x0000000000320000-0x00000000003B2000-memory.dmp

Download

memory/1768-58-0x0000000000320000-0x00000000003B2000-memory.dmp

Download

memory/1768-59-0x0000000001E20000-0x0000000001F3B000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

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Downloads