djvu | 3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917

Analysis

max time kernel
147s
max time network
150s
platform
windows11-21h2_x64
resource
win11-20240412-en
resource tags

arch:x64arch:x86image:win11-20240412-enlocale:en-usos:windows11-21h2-x64system
submitted
18/04/2024, 07:09

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General

Target
3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
Size 769KB
Sample240418-hy7jpaed22
SHA256 3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917
MD5 65b49650da8fa3a0f2fa914c06caf91d
SHA1 c15c0b6d02093a96bb2407e0f54ba7c3a95168f2
SHA512 f45f8c777dab501dffdbbf60e65a0cebab2eafbf8b62932a69e2aaded7d89e1dea6d7a0613de71eb172026c8046ca1c0051489f1e74e1ca30dba8d9456e854fe
SSDEEP 12288:eaO9YVihD1AeFbzhmcw3J4/yCDLBcW1V+KMhEmkZJWW:KZ1Rhmc++5NIK/ZJW
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/496-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp	family_djvu
behavioral2/memory/3604-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3604-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3604-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3604-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3604-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-39-0x0000000000400000-0x0000000000537000-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
3988	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-1-5-21-801765966-3955847401-2235691403-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\64ee673c-2ba1-43a5-b6f6-660b763cc329\\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe\" --AutoStart"	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.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
1	api.2ip.ua
2	api.2ip.ua
6	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 496 set thread context of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 4808 set thread context of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.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
3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
1988	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
1988	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 496 wrote to memory of 3604	496	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	80
PID 3604 wrote to memory of 3988	3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	82
PID 3604 wrote to memory of 3988	3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	82
PID 3604 wrote to memory of 3988	3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	82
PID 3604 wrote to memory of 4808	3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	83
PID 3604 wrote to memory of 4808	3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	83
PID 3604 wrote to memory of 4808	3604	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	83
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86
PID 4808 wrote to memory of 1988	4808	3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe	86

C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
"C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:496
- C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
  "C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3604
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\64ee673c-2ba1-43a5-b6f6-660b763cc329" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:3988
- - C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
    "C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:4808
  - - C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
      "C:\Users\Admin\AppData\Local\Temp\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1988

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

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Downloads

24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 1KB
SHA256 a7ab9f6a80c258081a72dfa8b17bed8bb47c637d214de5532120868a98772676
MD5 ba794c1f322fcc2712e405824cacf310
SHA1 12e514ad1bcd54435bc6aa60b5c9c3ed4d55fa6f
SHA512 49672e583dc2590415bc1d874b7bff584e99483472bda5cf183e9da8e1326c76fabe28d5aa7b7114e5111da90626346f1f55913c9413d75b7103b03e9bd33ae8
MD5 SHA1 SHA512

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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

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24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Size 410B
SHA256 959cd06f482e0c7effc057ecfe049af5a35dee0533b8fb9a97e3e85a2a6158e7
MD5 cb80f72b993cdb71d820255380e8416e
SHA1 ffb6e3dd574dbaabd68e946758e596b1b183c501
SHA512 8e7dea9339aa5ef1f2cfc0f7cc26991cb7536abee574758df8f94dde234d27274bf0742d6397821120ffc1b27a4fe252f48e9ad0b3227efca7e6fdc7124a6ce3
MD5 SHA1 SHA512

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CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464

Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Size 392B
SHA256 a54c6c2d13c3c9d068a390889a27de36dc730f072a885f1df58efce8bad81f4b
MD5 b8b31d918a5a6cb358fdd4aca9b27a6d
SHA1 e9189dbdda969cfa78964b17194a27585c9db8b2
SHA512 3e1d13122658d2167b29e0e00904b6bc99fe719a1c0fad064429669cd9022da9f751ea72067981b2a7eb67e098fbdb5b4c24a4c5f4c7dd0cb55e0600b49fbbc4
MD5 SHA1 SHA512

Submit Download

3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe

Path C:\Users\Admin\AppData\Local\64ee673c-2ba1-43a5-b6f6-660b763cc329\3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917.exe
Size 769KB
SHA256 3da1050ed63df3de66a6d6e84557993f51579d0f0880c88759ef8aaf6cfc4917
MD5 65b49650da8fa3a0f2fa914c06caf91d
SHA1 c15c0b6d02093a96bb2407e0f54ba7c3a95168f2
SHA512 f45f8c777dab501dffdbbf60e65a0cebab2eafbf8b62932a69e2aaded7d89e1dea6d7a0613de71eb172026c8046ca1c0051489f1e74e1ca30dba8d9456e854fe
SSDEEP 12288:eaO9YVihD1AeFbzhmcw3J4/yCDLBcW1V+KMhEmkZJWW:KZ1Rhmc++5NIK/ZJW
MD5 SHA1 SHA512 SSDEEP

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memory/496-2-0x0000000004BD0000-0x0000000004CEB000-memory.dmp

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memory/496-1-0x0000000002FC0000-0x0000000003062000-memory.dmp

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memory/1988-30-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-36-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-22-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-23-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-24-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-39-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-38-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-37-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-34-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-29-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/1988-31-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3604-6-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3604-17-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3604-3-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3604-4-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/3604-5-0x0000000000400000-0x0000000000537000-memory.dmp

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memory/4808-21-0x0000000002F90000-0x000000000302A000-memory.dmp

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