djvu | 33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01

General

Target

33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
Size

797KB
MD5

ee7a294a9688bbe8a98117b296af3171
SHA1

3298b9e14d9cec8a7155605315df20594ee152f1
SHA256

33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01
SHA512

e7a2bdb98ea79d856bf9e1d92960891de51530a86f9f5a1312063b911a91f69e894285183f5b7b1334c15650363d48a6976b20846fde19350c08dcc35405697e
SSDEEP

12288:Ud2rnaFF0ZORZwZ+dGMiSdrft8MVad9M8CLVdPHg9E8Eo7c1M:UdosD37MMiSNF8MV49sdI9qog1

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/3084-2-0x0000000003E10000-0x0000000003F2B000-memory.dmp	family_djvu
behavioral2/memory/1988-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1988-19-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/3732-37-0x0000000000400000-0x0000000000537000-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

2712 icacls.exe

pid	process
2712	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3062789476-783164490-2318012559-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\8e865a0e-2f51-4467-812c-4f8267b186dc\\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe\" --AutoStart"	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.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
7 api.2ip.ua

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

Suspicious use of SetThreadContext 2 IoCs

Processes:

33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe

description	pid	process	target process
PID 3084 set thread context of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 set thread context of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.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:

33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe

pid	process
1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
3732	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
3732	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe

C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
"C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3084

C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
"C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1988

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\8e865a0e-2f51-4467-812c-4f8267b186dc" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2712

C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
"C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2176

C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
"C:\Users\Admin\AppData\Local\Temp\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3732

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
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
a1cd3a9ffda211ef41e9a70be5f26c74

SHA1
93978622d210574145d5463c3851cb6a24a9deab

SHA256
624d962bfc1b0c4a850a368dc3e272e542604f329fd7fe417fbb08a9396fc3c2

SHA512
cf5193891a51e3ce371c11467a2aa96178222636417fc06ecf7c82c5c756569c506dffef056e4ac7ceac949bbf8de3f4cd9dce232ececb38ac5a3c09b376907b

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

MD5
83939fa9808cdc2e4bf7515c11f9dd62

SHA1
667d18a9584a4c6864d8aabcbe007b3179ce60ee

SHA256
1040316d178da09d2c07657753b61e10602b57679ca60d6c7c861c678b37422a

SHA512
c1761f8c9f84b991202cde3388d7d2c734e2ee60b0fe88f39a69e4c38fa12644b84271a03a12dbd143456755c5952fb04f76b1e838f0db1dc3a37929a01840c0

Download Submit
C:\Users\Admin\AppData\Local\8e865a0e-2f51-4467-812c-4f8267b186dc\33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
Filesize
797KB

MD5
ee7a294a9688bbe8a98117b296af3171

SHA1
3298b9e14d9cec8a7155605315df20594ee152f1

SHA256
33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01

SHA512
e7a2bdb98ea79d856bf9e1d92960891de51530a86f9f5a1312063b911a91f69e894285183f5b7b1334c15650363d48a6976b20846fde19350c08dcc35405697e

Download Submit
memory/1988-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1988-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1988-19-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1988-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1988-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3084-2-0x0000000003E10000-0x0000000003F2B000-memory.dmp

Filesize
1.1MB

Download
memory/3084-1-0x0000000002390000-0x0000000002429000-memory.dmp

Filesize
612KB

Download
memory/3732-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3732-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 3084 wrote to memory of 1988	3084	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 1988 wrote to memory of 2712	1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	icacls.exe
PID 1988 wrote to memory of 2712	1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	icacls.exe
PID 1988 wrote to memory of 2712	1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	icacls.exe
PID 1988 wrote to memory of 2176	1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 1988 wrote to memory of 2176	1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 1988 wrote to memory of 2176	1988	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe
PID 2176 wrote to memory of 3732	2176	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe	33b66eecf301a4bd47d2506a85f4662c9c1ee8d146b4a48766fe9ae978812b01.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads