djvu | 6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8

General

Target

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
Size

807KB
MD5

f4b38701cac3b466ac2c5a99ab8c6416
SHA1

262dedd611d88afe3f9119be37284f9474765fa2
SHA256

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8
SHA512

d142b5191ff70914c156e026f1316d62745e4c91e9942681d6d76246a2a92aeacbb4f5fcf8b4abc6a9e3140871517a21fa440574e3b1a940aa78716b56ffcf81
SSDEEP

12288:uL7E6RIo6OLZO/4cZIafwpd17oZSj6N8tqbKmaV/+WDUBw8GOWDfOR/ZDUM:YGOmH+Bb9j2jWmXWDCwxOWDfOR

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/test2/get.php

Attributes

extension
.vehu
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://cajgtus.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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool: https://wetransfer.com/downloads/33b490a613f49fa190924f199d2c079e20240512191214/caaf73 Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0872PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1144-2-0x0000000003D70000-0x0000000003E8B000-memory.dmp	family_djvu
behavioral1/memory/976-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/976-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/976-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/976-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/976-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/2780-35-0x0000000000400000-0x0000000002015000-memory.dmp	family_djvu
behavioral1/memory/212-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/212-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

3788 icacls.exe

pid	process
3788	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\c814a18e-9902-45a2-96ab-c1437a1998c8\\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe\" --AutoStart"	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 api.2ip.ua
6 api.2ip.ua
13 api.2ip.ua

flow	ioc
4	api.2ip.ua
6	api.2ip.ua
13	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

description	pid	process	target process
PID 1144 set thread context of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 set thread context of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

pid	process
976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
212	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
212	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
"C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
  "C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:976
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\c814a18e-9902-45a2-96ab-c1437a1998c8" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3788
- - C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
    "C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2780
  - - C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
      "C:\Users\Admin\AppData\Local\Temp\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:212

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

File and Directory Permissions Modification

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
1KB

MD5
e4cacc9fa4adc8a6751aaf917c99e447

SHA1
d27c0b41d3fe6627c82ea3e6e762b1474f64ba51

SHA256
6ebb6b38a3cab01ca3d714f8df8b1d1dc0f159922fe9ae5e104dcd27c59eaf30

SHA512
fc104a463bf08270217f88841c8690dcb264abeebf8bd78dfda2dd2bd4fa85231dc7aede74e427483065ef3e6ef3f2c7e73c1c67dc274861da3421ea35927a80

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
724B

MD5
8202a1cd02e7d69597995cabbe881a12

SHA1
8858d9d934b7aa9330ee73de6c476acf19929ff6

SHA256
58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5

SHA512
97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Filesize
410B

MD5
78a4286a8750ab07a6f8fc52fec87547

SHA1
b46081a3606ea322dc0ed520dafebc10a591d131

SHA256
85a5dc5dcd8ff32cc6d14850c09fad6e025c48aa1dfe5fb2d0fafff67eb9e584

SHA512
1f6e1f345ad4bc9e653bb10b16f866018f0f8d42581cf32bf39307661d3f0c29f5716ae145844492820b5aa368ec72d99505d2ecadb859659e96ebc6f896d268

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Filesize
392B

MD5
ae7fef5ccc70b8d45fa53faf4826f6f9

SHA1
9e116dc223b81d54f1b69a7df02655c2a0f987ca

SHA256
f79539e5af3b419d151f29879b8cc173381b2f3a2188c5350ed4f06548e608b6

SHA512
d0b2fb1ada136116126042030892ed302dbb92b35fe12b9d2909cbb7c12e31a64fc3d27e6f5b997def5ff4d20e5c69a818970f4f9b8ae110ca27c8cd475ed45f

Download Submit
C:\Users\Admin\AppData\Local\c814a18e-9902-45a2-96ab-c1437a1998c8\6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

Filesize
807KB

MD5
f4b38701cac3b466ac2c5a99ab8c6416

SHA1
262dedd611d88afe3f9119be37284f9474765fa2

SHA256
6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8

SHA512
d142b5191ff70914c156e026f1316d62745e4c91e9942681d6d76246a2a92aeacbb4f5fcf8b4abc6a9e3140871517a21fa440574e3b1a940aa78716b56ffcf81

Download Submit
memory/212-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/212-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/976-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/976-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/976-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/976-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/976-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1144-2-0x0000000003D70000-0x0000000003E8B000-memory.dmp

Filesize
1.1MB

Download
memory/1144-1-0x0000000002330000-0x00000000023C5000-memory.dmp

Filesize
596KB

Download
memory/2780-35-0x0000000000400000-0x0000000002015000-memory.dmp

Filesize
28.1MB

Download
memory/2780-21-0x0000000000400000-0x0000000002015000-memory.dmp

Filesize
28.1MB

Download

description	pid	process	target process
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 1144 wrote to memory of 976	1144	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 976 wrote to memory of 3788	976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	icacls.exe
PID 976 wrote to memory of 3788	976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	icacls.exe
PID 976 wrote to memory of 3788	976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	icacls.exe
PID 976 wrote to memory of 2780	976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 976 wrote to memory of 2780	976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 976 wrote to memory of 2780	976	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe
PID 2780 wrote to memory of 212	2780	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe	6614b336fb0740c40015b739e5510ebb114250b6cfc4017b9b2099530ebb94c8.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads