djvu | 5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45

General

Target

5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
Size

778KB
MD5

01eb2d07095382eb8ade0e0997309caf
SHA1

fc44323bd4b5ef5ad89f576532a3e422c848b256
SHA256

5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45
SHA512

3794d34bb32eafae56de137f2294508e695655c88fda5f89192ceb472b7a9b10cd585d058f906031f8e4044276ec197ac09b8425a1013acb975c9f40ce59d5c1
SSDEEP

24576:JPomJ4uC/jCEiP3q5tUJOR/ZtspxPnLCjW:JQ4FCLP83q5OJk/Hsz2y

Score

10^/10

djvu discovery persistence ransomware

Malware Config

Extracted

Family

djvu

C2

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

Attributes

extension
.bgjs
offline_id
Z6iwSvCoAt8T8K2ROxecuXHPNHv7eDyWrc8Ks7t1
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/54cdfd152fe98eedb628a1f4ddb7076420240421150208/403a27 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: 0863PsawqS

rsa_pubkey.plain

Signatures

Detected Djvu ransomware 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3980-2-0x0000000004B20000-0x0000000004C3B000-memory.dmp	family_djvu
behavioral2/memory/1976-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1976-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1976-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1976-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/1976-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral2/memory/4940-38-0x0000000000400000-0x0000000000537000-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

Processes:

icacls.exe

pid process

2936 icacls.exe

pid	process
2936	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2718508534-2116753757-2794822388-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\49a9a19c-ab83-433b-8eb2-b0e4e78b8e7f\\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe\" --AutoStart"	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.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
16 api.2ip.ua
20 api.2ip.ua

flow	ioc
1	api.2ip.ua
16	api.2ip.ua
20	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe

description	pid	process	target process
PID 3980 set thread context of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 set thread context of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.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:

5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe

pid	process
1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
4940	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
4940	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe

C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
"C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3980

C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
"C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe"
2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1976

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\49a9a19c-ab83-433b-8eb2-b0e4e78b8e7f" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:2936

C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
"C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3912

C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
"C:\Users\Admin\AppData\Local\Temp\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:4940

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

Loading Replay Monitor...

Downloads

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

MD5
132a59b12289f608ea38eb370d498a8f

SHA1
0fd8a23d395d38719cb0b71ee10df56ce35a6c4c

SHA256
d6fcf2cd41b542b6d7ee6daa10cf080f4b6220cbce855be03d689d1ad080ed9b

SHA512
ea953e93faf4c78e1b9e3768a463f6b46548af00b430ebd275054f7da1e1f4c40746bd3ff4ca02c0fd107bf78b02b67069075939b719c00a7e4bc2f4ecb46da1

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
842311e0ce1bf032f5c349811cb63aad

SHA1
665c4658fbbc9e031b5073d47c9b98edc54a373b

SHA256
e79ad2dde1dcddbe5dcc1a0b3e61fee3715d0e698c6f2d7ec27e0d3438ce0b3c

SHA512
84916b7de3e8f545455760d0cc74cb71cf2c6eefeefa65c8c7cd2e7e95b21aec7f44e0ece5175f9b3001ef0c4415c82aab0d58e7effe16bf9501fa70489e3c82

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

MD5
e8b384733939208eb97989c7ef4d4cf2

SHA1
bad7ac8e74f32376f616720209c077c2c8aa1e6c

SHA256
c408a8b561c753feb6aae2fc6ae730050b017217e98ba25637d6498c6ae12acf

SHA512
8da49d5c74ef54c9675474a2452de253dabb456ca94690d66b3055dcd7dbdc8a875f76eab0bf9b7049c86563d176ab2e30fb8a822fad4b8342ad48d07aa54b52

Download Submit
C:\Users\Admin\AppData\Local\49a9a19c-ab83-433b-8eb2-b0e4e78b8e7f\5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
Filesize
778KB

MD5
01eb2d07095382eb8ade0e0997309caf

SHA1
fc44323bd4b5ef5ad89f576532a3e422c848b256

SHA256
5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45

SHA512
3794d34bb32eafae56de137f2294508e695655c88fda5f89192ceb472b7a9b10cd585d058f906031f8e4044276ec197ac09b8425a1013acb975c9f40ce59d5c1

Download Submit
memory/1976-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1976-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1976-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1976-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1976-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3912-18-0x00000000032E0000-0x000000000337C000-memory.dmp

Filesize
624KB

Download
memory/3980-1-0x0000000003240000-0x00000000032D4000-memory.dmp

Filesize
592KB

Download
memory/3980-2-0x0000000004B20000-0x0000000004C3B000-memory.dmp

Filesize
1.1MB

Download
memory/4940-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4940-38-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download

description	pid	process	target process
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3980 wrote to memory of 1976	3980	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 1976 wrote to memory of 2936	1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	icacls.exe
PID 1976 wrote to memory of 2936	1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	icacls.exe
PID 1976 wrote to memory of 2936	1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	icacls.exe
PID 1976 wrote to memory of 3912	1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 1976 wrote to memory of 3912	1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 1976 wrote to memory of 3912	1976	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe
PID 3912 wrote to memory of 4940	3912	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe	5775c8b82e9abf5076761a1b81f9f17c2f364dd0ad6cd28d42b80c106594af45.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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