djvu | d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674

General

Target

d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
Size

723KB
MD5

ce0d93f30f900497da34f70cf6de1537
SHA1

7d9404e5040329795d2ed7600c2d8a7e7db4697f
SHA256

d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674
SHA512

076a15af795a60b3033fad052d556ea4bb44dd458ba5d2d457fde5be92531e54d0ab6674af752a8d12e653479af1cba6a7bcc2a8d009418f62d22b573e4d798f
SSDEEP

12288:ZIqQEYBO/RKMuN25TVAwQ/3sT1GzmaPRlLYuZq8UxZ0l:ZINcEMq25TVAbEema7LYuZq8e0

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 17 IoCs

resource	yara_rule
behavioral2/memory/2364-2-0x0000000002620000-0x000000000273B000-memory.dmp	family_djvu
behavioral2/memory/5092-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/5092-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-23-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1604-38-0x0000000000400000-0x0000000000537000-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
436	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-1-5-21-3433428765-2473475212-4279855560-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b87b1765-da76-41d5-ae9b-4cf300b37e03\\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe\" --AutoStart"	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.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
9	api.2ip.ua
11	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2364 set thread context of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 1364 set thread context of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.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
5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
1604	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
1604	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 2364 wrote to memory of 5092	2364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	81
PID 5092 wrote to memory of 436	5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	82
PID 5092 wrote to memory of 436	5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	82
PID 5092 wrote to memory of 436	5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	82
PID 5092 wrote to memory of 1364	5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	83
PID 5092 wrote to memory of 1364	5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	83
PID 5092 wrote to memory of 1364	5092	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	83
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86
PID 1364 wrote to memory of 1604	1364	d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe	86

C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
"C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
  "C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:5092
- - C:\Windows\SysWOW64\icacls.exe
    icacls "C:\Users\Admin\AppData\Local\b87b1765-da76-41d5-ae9b-4cf300b37e03" /deny *S-1-1-0:(OI)(CI)(DE,DC)
    3⤵
    - Modifies file permissions
    PID:436
- - C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
    "C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe" --Admin IsNotAutoStart IsNotTask
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1364
  - - C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe
      "C:\Users\Admin\AppData\Local\Temp\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe" --Admin IsNotAutoStart IsNotTask
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:1604

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

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Downloads

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

Filesize
1KB

MD5
377b0b955dd0b0490e7beca59ae633a5

SHA1
a861cdd741b460d5fbda5452d31a5e507da50c06

SHA256
50e3cb37250fc0daf7672d7bc608ea0471916b2a31d102c5a6c48b0a086bbe7b

SHA512
3ccfdf2f239c66517b6134d51ff52481c5d9c4df22db49556b0073f0aec89c53354988ae5217272beffa6adbaffeded34b7230cbd5a0569d20be076157e61225

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
587d7abf83fbdf17a1b6d153e172c9be

SHA1
b228233ce10dc63048c35a9cf60feb58d193eb5c

SHA256
83cb106f06f00360b8422030a6fbe60a9856292595ff5abd8991f492bd2e18e3

SHA512
5e0b125fa566f63f72ea7167b0bddcfc97cd16f322a3257d73f99668815a96bc562c09199f4576aac04fd2a02b453c993531699aa83aa0f4e43ee8006b799feb

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

Filesize
392B

MD5
5dd6d35e22cd6e4e9a35788019706008

SHA1
a47d2d1d7a067fd16f3b27f96ae6c4e913e66021

SHA256
6d139c2d3b89745b26e82863b111ef63fad55368fcc8f32b6e18e8c12f822468

SHA512
3a3569168414c15bc11da204fc5d6aa7c3b096925a9ea9e74099ba002cdb91661e96599f83e50b7b28ce786dfaf113360ceb59c102b718c9ac453d44df30aa42

Download Submit
C:\Users\Admin\AppData\Local\b87b1765-da76-41d5-ae9b-4cf300b37e03\d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674.exe

Filesize
723KB

MD5
ce0d93f30f900497da34f70cf6de1537

SHA1
7d9404e5040329795d2ed7600c2d8a7e7db4697f

SHA256
d317149ebb359d097d0d43ea2eb20f5d5aec9a01223112fac26fc714c9ffd674

SHA512
076a15af795a60b3033fad052d556ea4bb44dd458ba5d2d457fde5be92531e54d0ab6674af752a8d12e653479af1cba6a7bcc2a8d009418f62d22b573e4d798f

Download Submit
memory/1364-22-0x0000000000400000-0x000000000080C000-memory.dmp

Filesize
4.0MB

Download
memory/1604-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-23-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1604-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2364-2-0x0000000002620000-0x000000000273B000-memory.dmp

Filesize
1.1MB

Download
memory/2364-1-0x0000000002580000-0x0000000002618000-memory.dmp

Filesize
608KB

Download
memory/5092-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/5092-5-0x0000000000400000-0x0000000000537000-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