djvu | 453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f

General

Target

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
Size

771KB
MD5

9560fb4eb84759382dd5edfec54bec27
SHA1

7688c98cab62daf9ec00c3316d71bbc7368f5a3c
SHA256

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f
SHA512

9bb57a49100acf419e704d1ea3e43cd78148bff8df14e16e36a07339a0b257f2fbecab3f681d8476b9aa1fd5cf0701c9d331c8f73273efd0ede1ed3b1b93f398
SSDEEP

12288:6gcm7qu9vVYCvOdnLUhkMVjp4G6rz4Vx34TV+1KGiddX3wMpHkmTqpPQEiAVoNCn:Imr9uCwUrJpwr2icKGgHvJWpPJN

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
behavioral1/memory/3852-2-0x0000000004A50000-0x0000000004B6B000-memory.dmp	family_djvu
behavioral1/memory/1956-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1956-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1956-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1956-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/1956-15-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-21-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-22-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-28-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-29-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-35-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-36-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3336-37-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu

Djvu Ransomware
Ransomware which is a variant of the STOP family.
ransomware djvu

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

1800 icacls.exe

pid	process
1800	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\0509dc5b-cdaa-4440-bb9c-57ed1d0d248d\\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe\" --AutoStart"	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.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

26 api.2ip.ua
28 api.2ip.ua
48 api.2ip.ua

flow	ioc
26	api.2ip.ua
28	api.2ip.ua
48	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

description	pid	process	target process
PID 3852 set thread context of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 set thread context of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.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:

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

pid	process
1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
3336	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
3336	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3852

C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1956

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\0509dc5b-cdaa-4440-bb9c-57ed1d0d248d" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:1800

C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1644

C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
"C:\Users\Admin\AppData\Local\Temp\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3336

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

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

MD5
cb9e9c73d3688b51ee1899e25cd1cc7e

SHA1
b2d472d87ac099a708b7536b5c30e5e6f0d28b7e

SHA256
382e6d80f80afb665a9c3065602a8fb4a6c3ff73c06a0a6937ffc178466d97a2

SHA512
74f1d7c3c68c0ae4ebc7b1c270c2138f578b78b591d8c6af4b7bb56fd4f23e5cebdf9748e7045521c72c000e5a4f35adce8e62951470e65c531f95b26b52a54e

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
bf957fef8c2bb9d1cc62cf5bb7fc24c1

SHA1
cc14ad17026d7d6fc695516bfe63ae48d895ec17

SHA256
54ef7abceaf58c0802494a239a7c6ed8a4d79b1816484c2f4261ef49f196438d

SHA512
efddad1bcca46766116d9001beeaea0d53367c81c38a34aaffdf112009909ef3950fc76bd6ea7911b84643b623fc7e7149a78fb9545736344921f55d787ff29a

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

MD5
67be8977565ea40dee5b5d78ab16f687

SHA1
c2bb50ab3932d8f35b1b2126e36319a0ee13e398

SHA256
ae2885f502a5a4312e4365b2530bfd941850664b1f929d17e5ba70b34dcf41d7

SHA512
b98c7eaca6bd0d751f7fd5b0318996dc1d290396aab2bd42792e7b95ff4e68d19a1fe240cf4116314c509c7ea4a77c1ee50c98aab2a550022c054998d2e45063

Download Submit
C:\Users\Admin\AppData\Local\0509dc5b-cdaa-4440-bb9c-57ed1d0d248d\453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
Filesize
771KB

MD5
9560fb4eb84759382dd5edfec54bec27

SHA1
7688c98cab62daf9ec00c3316d71bbc7368f5a3c

SHA256
453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f

SHA512
9bb57a49100acf419e704d1ea3e43cd78148bff8df14e16e36a07339a0b257f2fbecab3f681d8476b9aa1fd5cf0701c9d331c8f73273efd0ede1ed3b1b93f398

Download Submit
memory/1644-19-0x00000000031A0000-0x000000000323F000-memory.dmp

Filesize
636KB

Download
memory/1956-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1956-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1956-15-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1956-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/1956-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-22-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-21-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-28-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-29-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-36-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3336-37-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3852-1-0x0000000003190000-0x000000000322A000-memory.dmp

Filesize
616KB

Download
memory/3852-2-0x0000000004A50000-0x0000000004B6B000-memory.dmp

Filesize
1.1MB

Download

description	pid	process	target process
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 3852 wrote to memory of 1956	3852	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1956 wrote to memory of 1800	1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	icacls.exe
PID 1956 wrote to memory of 1800	1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	icacls.exe
PID 1956 wrote to memory of 1800	1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	icacls.exe
PID 1956 wrote to memory of 1644	1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1956 wrote to memory of 1644	1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1956 wrote to memory of 1644	1956	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe
PID 1644 wrote to memory of 3336	1644	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe	453828f33a749ebef5a1338237a17bd0738ced4392139ff2f911308052911c7f.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads