djvu | 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca

General

Target

75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
Size

771KB
MD5

d07907a0efa31135f9392fa623d821bf
SHA1

942c7783ad119e8f8f7b54035793c501e4204f0e
SHA256

75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca
SHA512

6794144445c5d8b4ea64291cd72ddf25a536a7c96d9eeb88c71e0a0094651168ad8a9205caf5ec5da6b0b46b3f26def663f578369a1b3a084343c44e59dc455a
SSDEEP

12288:gdY2I03rbaek5sc5pYca5CEAkMQYoI+EEi4KbzjgZ2xa80/gNYWzjWno:gdYHNSRi44jgZyaxAWno

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.vepi
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: 0871PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 15 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4600-2-0x0000000003E70000-0x0000000003F8B000-memory.dmp	family_djvu
behavioral2/memory/2568-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2568-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2568-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2568-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2568-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/2076-37-0x0000000000400000-0x0000000000537000-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

4216 icacls.exe

pid	process
4216	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3001105534-2705918504-2956618779-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\fe2e814b-4f27-4afa-8774-77cf5ce49438\\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe\" --AutoStart"	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.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

2 api.2ip.ua
6 api.2ip.ua
1 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe

description	pid	process	target process
PID 4600 set thread context of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 set thread context of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.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:

75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe

pid	process
2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
2076	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
2076	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe

C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4600

C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2568

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\fe2e814b-4f27-4afa-8774-77cf5ce49438" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:4216

C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1348

C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2076

Network

MITRE ATT&CK Matrix ATT&CK v13

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

1

T1222

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EA
Filesize
1KB

MD5
9e130b50184e39e32205c9dd3befee15

SHA1
150b8bfb3208d3a854996e02c1470d81530335b5

SHA256
7b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50

SHA512
3cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f

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
40cf2f6e5aecbf76691f9a64bfb39335

SHA1
3bfb6a0d4d7443878bfa28c957f467fe41ec813e

SHA256
8fc7877a6cf63076d277a2e06cb3c3bd1d63a39364cd022a565ff9b3214d6972

SHA512
fe5ccd690bf2eb88fda155e8f8b50f78435838042be44c5ccf65edceb981f2ce7c08c89780f37684f085279b78a5ae1693e1e0e219148afe924b646aab1f38ed

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

MD5
b9e27e752632793ce33252e14b0e5447

SHA1
0b605bc1509c96b01b6c82fdc6ffaf2068a22e7d

SHA256
5bd1db3f5f186799fa5750557a8ff88eba6e7b00105f38aa33d047da26925b40

SHA512
aa6c0da0f44f09192b7c99d7f20a9f5143e62bb8d637015ef8d77ea8dc7024a434c00d9f05bd03eb42abc170a9c44f2b18927bae91f530add30d3ae09ad0057a

Download Submit
C:\Users\Admin\AppData\Local\fe2e814b-4f27-4afa-8774-77cf5ce49438\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
Filesize
771KB

MD5
d07907a0efa31135f9392fa623d821bf

SHA1
942c7783ad119e8f8f7b54035793c501e4204f0e

SHA256
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca

SHA512
6794144445c5d8b4ea64291cd72ddf25a536a7c96d9eeb88c71e0a0094651168ad8a9205caf5ec5da6b0b46b3f26def663f578369a1b3a084343c44e59dc455a

Download Submit
memory/2076-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2076-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/2568-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4600-1-0x0000000002370000-0x000000000240D000-memory.dmp

Filesize
628KB

Download
memory/4600-2-0x0000000003E70000-0x0000000003F8B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 4600 wrote to memory of 2568	4600	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 2568 wrote to memory of 4216	2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	icacls.exe
PID 2568 wrote to memory of 4216	2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	icacls.exe
PID 2568 wrote to memory of 4216	2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	icacls.exe
PID 2568 wrote to memory of 1348	2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 2568 wrote to memory of 1348	2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 2568 wrote to memory of 1348	2568	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
PID 1348 wrote to memory of 2076	1348	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe	75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads