djvu | 672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7

General

Target

672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
Size

781KB
MD5

0333f0129897bffa8baa70d30eefadfd
SHA1

a99d6b1274f740b58158df0fbc71852503622ac0
SHA256

672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7
SHA512

06fd7b024c04c42d93c70e44ac39018115f90373eae5d9a8cccdf526034f2f3e57d0b22a3c6e0c617d737e03f9daab9c10cea8e40eb3c69eaeabdb2022e60d77
SSDEEP

12288:T6ESEvOgZx/Nd0wNCo7xztsyh98Q20DuV8gYjvozZfLiI:2EhvOgXw0lay20DuV8gAULiI

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.jawr
offline_id
UlJXrkKDIkENh0vb5W9For2Yyh6riGytjO5p2St1
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. You can get and look video overview decrypt tool: https://we.tl/t-iu965qqEb1 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: 0831Usdk

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 16 IoCs

resource	yara_rule
behavioral2/memory/652-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/204-4-0x00000000048C0000-0x00000000049DB000-memory.dmp	family_djvu
behavioral2/memory/652-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/652-1-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/652-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/652-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-43-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-44-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-47-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-46-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4304-48-0x0000000000400000-0x0000000000537000-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
1516	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-1-5-21-3968772205-1713802336-1776639840-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\04b0eefe-40dd-47c7-ab0c-5f3f0721e3f9\\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe\" --AutoStart"	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.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
10	api.2ip.ua
2	api.2ip.ua
3	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 204 set thread context of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 3084 set thread context of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78

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
652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
4304	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
4304	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 204 wrote to memory of 652	204	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	74
PID 652 wrote to memory of 1516	652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	75
PID 652 wrote to memory of 1516	652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	75
PID 652 wrote to memory of 1516	652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	75
PID 652 wrote to memory of 3084	652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	76
PID 652 wrote to memory of 3084	652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	76
PID 652 wrote to memory of 3084	652	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	76
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78
PID 3084 wrote to memory of 4304	3084	672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe	78

C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
"C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:204
- C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
  "C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:652
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\04b0eefe-40dd-47c7-ab0c-5f3f0721e3f9" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:1516
- - C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
    "C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:3084
  - - C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe
      "C:\Users\Admin\AppData\Local\Temp\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:4304

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

System Information Discovery

1

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
a240d3899f5c942fa4d758eaa3f6cffd

SHA1
ab28b7e179d0b320b32b40f9302c6692bab2f06e

SHA256
fd668a44e7e00cb370d96f1ed1de4a6853f0fe2679fbb5e9cc211450d7cd6111

SHA512
8d774eda4fba5de333e50be8503c902c5f8aa6bc4516a0cad95f8cb8d697924fb88696b22cc712c6468ee9e8866a29c71d24f16d4e19dd0ded38069602babeee

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
600fb1870480cb679d13b73f59640d67

SHA1
641ebf09e979d06fb5cc43a00db955a8257ec214

SHA256
ef6ed3f0124ed23151162a787e794b2d4ae57fdad842db31a7eec13df79d030f

SHA512
5d19b8f06e9e31d4a8264c975f6da128fd1ffd6688126cbb9d9b44d6fcbcef5126dcc5c4d6630cb1524e0d0b93ef366597eed37c536efac03bd96364c78c89cd

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

Filesize
392B

MD5
ec88f136f4100a3b2c1c14d4c01ef5ea

SHA1
e1e7e57bc7bb33b38c71d4d7b86586b0634dd3a2

SHA256
aef28d097d774b31fd56a4562120918a381949af62830cb19019b8cceca7cb51

SHA512
349896cb3a86f0135f560c2d430d7f8fe345348f70c7a29b86810340d5e5c03d6a2bf0779984db8d9ec733558e15addcc0b5f63a6f990fc2bd9a23a1b450e12d

Download Submit
C:\Users\Admin\AppData\Local\04b0eefe-40dd-47c7-ab0c-5f3f0721e3f9\672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7.exe

Filesize
781KB

MD5
0333f0129897bffa8baa70d30eefadfd

SHA1
a99d6b1274f740b58158df0fbc71852503622ac0

SHA256
672488666b68b99cef16ff0c1acfd3aa009df3f6d3f18897c5ecee77b77a57c7

SHA512
06fd7b024c04c42d93c70e44ac39018115f90373eae5d9a8cccdf526034f2f3e57d0b22a3c6e0c617d737e03f9daab9c10cea8e40eb3c69eaeabdb2022e60d77

Download Submit
memory/204-4-0x00000000048C0000-0x00000000049DB000-memory.dmp

Filesize
1.1MB

Download
memory/204-2-0x0000000004820000-0x00000000048C0000-memory.dmp

Filesize
640KB

Download
memory/652-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/652-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/652-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/652-1-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/652-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-43-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-44-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-47-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-46-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4304-48-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads