djvu | 4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e

Analysis

max time kernel
144s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 01:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
Size 814KB
Sample240529-bsn2tsde69
SHA256 4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e
MD5 7265daee89e587ef7bfae3359391c6de
SHA1 918a6401d39ddcea8a9f34c37715deddf0e206ee
SHA512 b568c459eea4df96d0ca6f6e15f88c8267aa8a2ed4646e5704f3c14217ed8609106b87b9534d1a56b775af45592d92f41f935712e7808f4e3aea201e17fcc18a
SSDEEP 12288:XroYw+GVNfSQwgQWJeYldTogJGKDcX7kbpQW6tBxU2Vke7qs4vtP/XDVcM41:7ovFSQnICntcAwrU2b+13DVh4
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

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

Attributes

extension
.veza
offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
payload_url
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: 0873PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/3940-2-0x00000000049E0000-0x0000000004AFB000-memory.dmp	family_djvu
behavioral2/memory/444-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/444-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/444-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/444-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/444-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4092-37-0x0000000000400000-0x0000000000537000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3952	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\17e01af9-4757-4819-bac8-43f21c85dcb1\\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe\" --AutoStart"	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.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.

flow	ioc
3	api.2ip.ua
4	api.2ip.ua
14	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3940 set thread context of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 2820 set thread context of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
4092	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
4092	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 3940 wrote to memory of 444	3940	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	83
PID 444 wrote to memory of 3952	444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	86
PID 444 wrote to memory of 3952	444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	86
PID 444 wrote to memory of 3952	444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	86
PID 444 wrote to memory of 2820	444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	87
PID 444 wrote to memory of 2820	444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	87
PID 444 wrote to memory of 2820	444	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	87
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89
PID 2820 wrote to memory of 4092	2820	4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe	89

C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
"C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3940
- C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
  "C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:444
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\17e01af9-4757-4819-bac8-43f21c85dcb1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3952
- - C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
    "C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2820
  - - C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
      "C:\Users\Admin\AppData\Local\Temp\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

File and Directory Permissions Modification

T1222

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 f226294a247fb8da33cf1868a83ee262f7831305b86f5f3dd5805fbc9188d042
MD5 a5c01f337cdeb7cfea1fa9537953788a
SHA1 4a424c3abf07b4169648765cec1e1d3462edd3a7
SHA512 9e48d9738c65450423ae773856c4d708bbffb48e0b047cf2dec0504bf8becd0f75a95587efa94743525fb3e4f6364760a1cab755e91c0b59fd6c97714b143ede
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 724B
SHA256 58f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
MD5 8202a1cd02e7d69597995cabbe881a12
SHA1 8858d9d934b7aa9330ee73de6c476acf19929ff6
SHA512 97ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
MD5 SHA1 SHA512

Submit Download

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 0fe5311c025229301f06ea0d61d699eff6a98337025aa013f3f61d60c600e442
MD5 53ec769392e13bef198dd5799b309004
SHA1 f6cb89d27a418197bbad7130b4f83c62fdb03696
SHA512 3026a0aea4a91f3cb461c5de3c4e285305f4f2f96dbfa0318e3af81b7bc5ef3c81814ca6cb9b02ae7de475f50cc8ac08d50b0ba48961fec55d5092a7a6c5fb2d
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 d9cd2f14b2db2dab836c715ef6f6f0debd0ce1b53b459670d85dd3426b19ebe2
MD5 7a8e195cbd0701e6ced66fa155db0473
SHA1 c8c34bf83232dc6f6460556c2723dd5d833c0f26
SHA512 40df36f0e17a5df8a1f48b74b70e325df17a9f86a9715ecdf407145c7fdd64e12dac3b6f66de5d99063e4b830715681d7a71a4764718c326f360f44d6c0b896f
MD5 SHA1 SHA512

Submit Download

4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe

Path C:\Users\Admin\AppData\Local\17e01af9-4757-4819-bac8-43f21c85dcb1\4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e.exe
Size 814KB
SHA256 4f9af410240401ada8d2eee48baf81dd7c33e990d7927fa1d456533cbfb37c6e
MD5 7265daee89e587ef7bfae3359391c6de
SHA1 918a6401d39ddcea8a9f34c37715deddf0e206ee
SHA512 b568c459eea4df96d0ca6f6e15f88c8267aa8a2ed4646e5704f3c14217ed8609106b87b9534d1a56b775af45592d92f41f935712e7808f4e3aea201e17fcc18a
SSDEEP 12288:XroYw+GVNfSQwgQWJeYldTogJGKDcX7kbpQW6tBxU2Vke7qs4vtP/XDVcM41:7ovFSQnICntcAwrU2b+13DVh4
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/444-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/444-19-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/444-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/444-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/444-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/3940-1-0x0000000004940000-0x00000000049E0000-memory.dmp

Download

memory/3940-2-0x00000000049E0000-0x0000000004AFB000-memory.dmp

Download

memory/4092-28-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-27-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-29-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-30-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-35-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-34-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4092-37-0x0000000000400000-0x0000000000537000-memory.dmp

Download