djvu | 668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de

General

Target

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
Size

733KB
MD5

1871a7b1a2bc50989010342b373c4c99
SHA1

bda919303b99970bda999cd2762b0c6f8a8bf587
SHA256

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de
SHA512

14769d5dbf7161b3845083cbdddb8c39cefd90bccce6cc5a8031f6e58cc477c114dc35ff162093812ea527241f3fc2f2ec6f1f48c7b5a0dbd2aeacfd40bada5d
SSDEEP

12288:7SV6+0wTK32ZiRHThQd4yuCRM8emC/E13RPdGbwH7ratUMgJqd:7S3aRVw4bUM8eCBPdG07engs

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 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3252-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp	family_djvu
behavioral2/memory/4756-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4756-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4756-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4756-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4756-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-24-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-31-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-39-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-38-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-40-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1952-41-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

4132 icacls.exe

pid	process
4132	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2457560273-69882387-977367775-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\a981d2ae-938c-4705-9fd7-34965da6732e\\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe\" --AutoStart"	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.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.

Processes:

flow ioc

1 api.2ip.ua
2 api.2ip.ua
8 api.2ip.ua

flow	ioc
1	api.2ip.ua
2	api.2ip.ua
8	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

description	pid	process	target process
PID 3252 set thread context of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 set thread context of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

pid	process
4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
1952	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
1952	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
"C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3252

C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
"C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4756

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\a981d2ae-938c-4705-9fd7-34965da6732e" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4132

C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
"C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2396

C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
"C:\Users\Admin\AppData\Local\Temp\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:1952

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
ad097f8a8502cc72518724d2b31426ec

SHA1
4fe49565580149ed2638f29a8cb4f19ef9513a56

SHA256
33a6fcd25004cbccf304f74a38be16f8cd00840ae4b70bca52d2cc68e14cc486

SHA512
2606d0e4798cd79a7a02c49574cc12f0166284923c4f6adb26aeab544a297c4b34fe253452b3fa76c15a1da670f3fe63988fe77e03ff1cd8e8063d37570aefc2

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
ad4d87ad9bb2a9f96c9a503bb90388b7

SHA1
585404c5e68bb7b489bca39fe5fc0bfb6e21ff48

SHA256
fb2a51edfd2c034f409b0410c3ade3d50264eae825b817315c741ffeec0e352b

SHA512
e99b5e3208c081e16acaec86be28801a0858822798dd6653c4645f36782b94c0c1f8f52d4f3d70d0589f0fa511832a711f5c281f488f0d3712db9eb64ef269bc

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464
Filesize
392B

MD5
daf65e7e149e295b6d12a389f3c73cdb

SHA1
6bd3d6333b87e81714c425e60fca9a73fce261c0

SHA256
0ccf39ba1731ec6e47b25d38257bf145d6f1185079269013233d00d737a55ec4

SHA512
dc2fa90f56479c355f1f1daea362f096690cbdca42efda7e5ce3760a838f411fc8113a3e0242fd981acf94d20ff23893f01409481488e93dca141a064ce69871

Download Submit
C:\Users\Admin\AppData\Local\a981d2ae-938c-4705-9fd7-34965da6732e\668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
Filesize
733KB

MD5
1871a7b1a2bc50989010342b373c4c99

SHA1
bda919303b99970bda999cd2762b0c6f8a8bf587

SHA256
668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de

SHA512
14769d5dbf7161b3845083cbdddb8c39cefd90bccce6cc5a8031f6e58cc477c114dc35ff162093812ea527241f3fc2f2ec6f1f48c7b5a0dbd2aeacfd40bada5d

Download Submit
memory/1952-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-41-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-24-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-40-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-39-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1952-31-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3252-1-0x0000000004A20000-0x0000000004ABA000-memory.dmp

Filesize
616KB

Download
memory/3252-2-0x0000000004AC0000-0x0000000004BDB000-memory.dmp

Filesize
1.1MB

Download
memory/4756-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4756-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4756-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4756-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4756-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 3252 wrote to memory of 4756	3252	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4756 wrote to memory of 4132	4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	icacls.exe
PID 4756 wrote to memory of 4132	4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	icacls.exe
PID 4756 wrote to memory of 4132	4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	icacls.exe
PID 4756 wrote to memory of 2396	4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4756 wrote to memory of 2396	4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 4756 wrote to memory of 2396	4756	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe
PID 2396 wrote to memory of 1952	2396	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe	668d0f54343c2ea075d8560e24e657dc9c2ebbe6ab0bbfe9b89bddc3fefca5de.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads