djvu | 3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c

General

Target

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
Size

710KB
MD5

25175281f6e6037cc3bc9f8afaaa77e9
SHA1

886350f89c88cd41df8605a1e1c75193f93b8965
SHA256

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c
SHA512

29993e63d4029d0185f6bd03e17a4b1e4ee1df024f58a7e6e7b7d49edb81882f6ce6b0d796d40028174f2f5d700a66d6dcbb1c13cf5d62ecffb1fda6b7e6eb4e
SSDEEP

12288:1OZuzQX0lxciFv3CgvfmdZTTHdMSdppymPE5zZcBqkaC0ziaWWoOsX:1OAzPQ6vCgvfeZThMSQCszgqDC0zI/OU

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
behavioral1/memory/4500-2-0x00000000049F0000-0x0000000004B0B000-memory.dmp	family_djvu
behavioral1/memory/844-3-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/844-5-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/844-4-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/844-6-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/844-17-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-20-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-25-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-26-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-27-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-30-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-32-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-33-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-34-0x0000000000400000-0x0000000000537000-memory.dmp	family_djvu
behavioral1/memory/3836-35-0x0000000000400000-0x0000000000537000-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:

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

Modifies file permissions 1 TTPs 1 IoCs
discovery

File and Directory Permissions Modification
T1222

Processes:

icacls.exe

pid process

756 icacls.exe

pid	process
756	icacls.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\35dbc5c0-6f2e-4b8c-8955-12567f722ec3\\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe\" --AutoStart"	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.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

6 api.2ip.ua
7 api.2ip.ua
27 api.2ip.ua

flow	ioc
6	api.2ip.ua
7	api.2ip.ua
27	api.2ip.ua

Suspicious use of SetThreadContext 2 IoCs

Processes:

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

description	pid	process	target process
PID 4500 set thread context of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 set thread context of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.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:

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

pid	process
844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
3836	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
3836	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
"C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4500

C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
"C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe"
2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\SysWOW64\icacls.exe
icacls "C:\Users\Admin\AppData\Local\35dbc5c0-6f2e-4b8c-8955-12567f722ec3" /deny *S-1-1-0:(OI)(CI)(DE,DC)
3⤵
- Modifies file permissions
PID:756

C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
"C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe" --Admin IsNotAutoStart IsNotTask
3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4276

C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
"C:\Users\Admin\AppData\Local\Temp\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe" --Admin IsNotAutoStart IsNotTask
4⤵
- Suspicious behavior: EnumeratesProcesses
PID:3836

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

MD5
6728aea2631b86a76c237508d8ba9b55

SHA1
7a670f95cac088313f7558869162fe01c6dc0ec9

SHA256
e1dd7380c6df33cd5702b032e0e359029d3ef7630f06ceb42cfdc154fd0baf7b

SHA512
533080cd1ec40b8530cad5c9914e0a5156d225f7392283ed2607eda4f1db4a6930002274060ed9130a6f634222c2e15818e16a50579cfe7f5274d028d31212f5

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
885780e4edb17e3affbde52514dff5ae

SHA1
850c7a3bef5f7cd2aeb8451bd87efbed1dad7a37

SHA256
8d1a1e0879eae327ec6567655fbae6139c7f1c3bd6b13fa8a07d92cad7612cd5

SHA512
11c6018fa21ed04329f2a86a31e416d6b845df9d7c86021112431dfec33dbda188911d51be518a4e35efd6f552739778516875d7ea81c6fa111b980210beafb7

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

MD5
2f9d3f9130a591ca2ebf77bffb69a591

SHA1
c59e10db508bcf7a3da95dfbf5e2961d06dcdd60

SHA256
76b15e90d69849991f733b805d80bc3d033a9a197b95db2a8024a7f737be6a62

SHA512
fad2ed04c0684ef6827d08935e9f8c0d79758c4238e24f79ad36d2503910ca6d445bb3860bd240607485352780f47c5e9b316b3e0b65ad38e863ed8c3c8ba0b7

Download Submit
C:\Users\Admin\AppData\Local\35dbc5c0-6f2e-4b8c-8955-12567f722ec3\3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
Filesize
710KB

MD5
25175281f6e6037cc3bc9f8afaaa77e9

SHA1
886350f89c88cd41df8605a1e1c75193f93b8965

SHA256
3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c

SHA512
29993e63d4029d0185f6bd03e17a4b1e4ee1df024f58a7e6e7b7d49edb81882f6ce6b0d796d40028174f2f5d700a66d6dcbb1c13cf5d62ecffb1fda6b7e6eb4e

Download Submit
memory/844-6-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/844-5-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/844-17-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/844-3-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/844-4-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-27-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-20-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-25-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-26-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-30-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-32-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-33-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-34-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/3836-35-0x0000000000400000-0x0000000000537000-memory.dmp

Filesize
1.2MB

Download
memory/4500-2-0x00000000049F0000-0x0000000004B0B000-memory.dmp

Filesize
1.1MB

Download
memory/4500-1-0x0000000002EB0000-0x0000000002F4E000-memory.dmp

Filesize
632KB

Download

description	pid	process	target process
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4500 wrote to memory of 844	4500	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 844 wrote to memory of 756	844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	icacls.exe
PID 844 wrote to memory of 756	844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	icacls.exe
PID 844 wrote to memory of 756	844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	icacls.exe
PID 844 wrote to memory of 4276	844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 844 wrote to memory of 4276	844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 844 wrote to memory of 4276	844	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe
PID 4276 wrote to memory of 3836	4276	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe	3305121c4ea7d965c7072e7de0a2d1cf9a6475967a008df9d7a38b3796bb767c.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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