djvu | da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63

Analysis

max time kernel
148s
max time network
155s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
16/04/2024, 23:14

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
Size 793KB
Sample240416-27643afb96
SHA256 da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63
MD5 3cff733a99e92c6d597f4a5560859b5d
SHA1 300b3208c457851815bf29eb28884c6f8d0c643d
SHA512 9d187ec6992096ac2afe897ba40b7c976c61cc49c5a0a66a267d0d5393acd4ad8397ee667d232a86b7bdfde3ffd368460da8affb5866cb26ace2ae4e4a8b63b1
SSDEEP 24576:CLZaGNB8D2JRAMhA1KrerO5g9ATWgxGZJyx:DmnQ3K5guS0x
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

http://sajdfue.com/test1/get.php

Attributes

extension
.uajs
offline_id
Jx0i3k2ogR5cKxX1evmz0Ex7TUxOUlnbh2dvnIt1
payload_url
http://sdfjhuz.com/dl/build2.exe

http://sajdfue.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/df01994dd8d37c2c33469922f8e7155a20240402134014/fd95b0 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: 0859PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

resource	yara_rule
behavioral2/memory/1676-2-0x0000000002800000-0x000000000291B000-memory.dmp	family_djvu
behavioral2/memory/4584-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4584-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4584-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4584-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4584-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2424-41-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

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

Modifies file permissions 1 TTPs 1 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1628	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-1-5-21-243033537-3771492294-1461557691-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\25901c70-76cd-4165-9b2f-4e0a46583547\\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe\" --AutoStart"	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.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
7	api.2ip.ua
10	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1676 set thread context of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 2744 set thread context of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86

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
4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
2424	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
2424	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 1676 wrote to memory of 4584	1676	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	81
PID 4584 wrote to memory of 1628	4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	82
PID 4584 wrote to memory of 1628	4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	82
PID 4584 wrote to memory of 1628	4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	82
PID 4584 wrote to memory of 2744	4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	83
PID 4584 wrote to memory of 2744	4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	83
PID 4584 wrote to memory of 2744	4584	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	83
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86
PID 2744 wrote to memory of 2424	2744	da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe	86

C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
"C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
  "C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4584
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\25901c70-76cd-4165-9b2f-4e0a46583547" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1628
- - C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
    "C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
      "C:\Users\Admin\AppData\Local\Temp\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:2424

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

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 9349878d22734eb8d3a6111fcddd3d6b8f89e304d40766dbf728437281dcd992
MD5 cdce5838e29c9e6eb3ba9f14b98a4273
SHA1 899d15721f75a164b0e6f06ba01545552843b6b6
SHA512 c9237ce071042ece8e2b2201f508b4b78cf48da788b328eaec3a32671daaf721bec8bc641567467f74142007ba0647c5ec6a6c24e3f1543e624b0264803aa16d
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 de9acda826bf758c3c6e4a2498349a710cb8bd65a53be85a48e034159f7fb78b
MD5 8fe63d33330fa2a2e099ae67d20e2c5a
SHA1 e3f7ac480f986b30dc281a59446abc9a114f7cb3
SHA512 9935f71888de3a0ac8b62d69d773ff0bf8926b733e17812c2e9d037f77a92a87dbed00e8408b917fa0ff42822d9e8ec76b78632d6c70f81514084b0a0d534bbd
MD5 SHA1 SHA512

Submit Download

CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 74eeebdd3798ad31b44aae0d9a966813702f7bd331e32d5f85bd810043843309
MD5 30e1e8153fc7228187e32ee479f4c967
SHA1 a8fea2fb8b6066ab62eaadf2e0cf2765a3ba5a9d
SHA512 f1266aed65a5509550dab2d8124fd26bc74530accd3fbe83842bbaa09ec8a5465103612867ab483cbc89e755de00fed7040de403a60bc012c4e0b29e14ea9d4c
MD5 SHA1 SHA512

Submit Download

da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe

Path C:\Users\Admin\AppData\Local\25901c70-76cd-4165-9b2f-4e0a46583547\da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63.exe
Size 793KB
SHA256 da7edcc66b41576c659517f8bd3420e868f8f593480d13630a63ddfc56bffd63
MD5 3cff733a99e92c6d597f4a5560859b5d
SHA1 300b3208c457851815bf29eb28884c6f8d0c643d
SHA512 9d187ec6992096ac2afe897ba40b7c976c61cc49c5a0a66a267d0d5393acd4ad8397ee667d232a86b7bdfde3ffd368460da8affb5866cb26ace2ae4e4a8b63b1
SSDEEP 24576:CLZaGNB8D2JRAMhA1KrerO5g9ATWgxGZJyx:DmnQ3K5guS0x
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1676-2-0x0000000002800000-0x000000000291B000-memory.dmp

Download

memory/1676-1-0x0000000000BA0000-0x0000000000C3C000-memory.dmp

Download

memory/2424-32-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-38-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-22-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-23-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-24-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-41-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-40-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-39-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-36-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-31-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2424-33-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/2744-20-0x0000000000CF0000-0x0000000000D90000-memory.dmp

Download

memory/4584-6-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4584-17-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4584-3-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4584-4-0x0000000000400000-0x0000000000537000-memory.dmp

Download

memory/4584-5-0x0000000000400000-0x0000000000537000-memory.dmp

Download