General
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Target
RNSM00486.7z
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Size
117.8MB
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Sample
240910-wnbk6axblq
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MD5
9cad20cac5e7a2828d978175bb888a8d
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SHA1
d7253644d5b0c999adef488892b0b34115576d53
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SHA256
4b4567580aa77913f8b2845b322a1fa43010c5210f791fbbe780ec75934a4f23
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SHA512
271023ad2f017c2a89e81ebe67725ad3ef5e4114bd0249505fa1fff6ca102a314b93ef3ac7463f816b187b1cc11f521465138dbfcff8a08d32e1ce3ac0855b87
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SSDEEP
3145728:4AORmmLuCgOX0cXsvmpqt8t2ed+Uv81oz+tHTQY:lmym0HvmZdZZszQY
Static task
static1
Behavioral task
behavioral1
Sample
RNSM00486.7z
Resource
win10v2004-20240802-en
Malware Config
Extracted
https://cdn.discordapp.com/attachments/880265796767608892/881902176195186728/New_Text_Document.txt
Extracted
Protocol: smtp- Host:
smtp.yandex.com.tr - Port:
587 - Username:
[email protected] - Password:
010203040506
Extracted
F:\GET_YOUR_FILES_BACK.txt
http://avosjon4pfh3y7ew3jdwz6ofw7lljcxlbk7hcxxmnxlh5kvf2akcqjad.onion
http://avosqxh72b5ia23dl5fgwcpndkctuzqvh2iefk5imp3pi5gfhel5klad.onion
Extracted
djvu
http://rlrz.org/fhsgtsspen6/get.php
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extension
.maql
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offline_id
xcdIdDNFh62dy3iJsba1COhcfDENsbjPHQQ2Eht1
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payload_url
http://znpst.top/dl/build2.exe
http://rlrz.org/files/1/build3.exe
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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. You can get and look video overview decrypt tool: https://we.tl/t-pk3SGFlmek Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. 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: 0340gSd743d
Extracted
njrat
0.7.3
Lime
127.0.0.1:1528
Client.exe
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reg_key
Client.exe
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splitter
AZERTY
Extracted
njrat
0.7d
HacKed
[email protected]:1177
6987755f146a62fa584d2a8a43dc9fe3
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reg_key
6987755f146a62fa584d2a8a43dc9fe3
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splitter
|'|'|
Targets
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Target
RNSM00486.7z
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Size
117.8MB
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MD5
9cad20cac5e7a2828d978175bb888a8d
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SHA1
d7253644d5b0c999adef488892b0b34115576d53
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SHA256
4b4567580aa77913f8b2845b322a1fa43010c5210f791fbbe780ec75934a4f23
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SHA512
271023ad2f017c2a89e81ebe67725ad3ef5e4114bd0249505fa1fff6ca102a314b93ef3ac7463f816b187b1cc11f521465138dbfcff8a08d32e1ce3ac0855b87
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SSDEEP
3145728:4AORmmLuCgOX0cXsvmpqt8t2ed+Uv81oz+tHTQY:lmym0HvmZdZZszQY
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Avoslocker Ransomware
Avoslocker is a relatively new ransomware, that was observed in late June and early July, 2021.
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Detected Djvu ransomware
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Renames multiple (141) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Modifies Windows Firewall
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Checks computer location settings
Looks up country code configured in the registry, likely geofence.
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Executes dropped EXE
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Loads dropped DLL
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Modifies file permissions
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Adds Run key to start application
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Legitimate hosting services abused for malware hosting/C2
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Looks up external IP address via web service
Uses a legitimate IP lookup service to find the infected system's external IP.
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Uses Tor communications
Malware can proxy its traffic through Tor for more anonymity.
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MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Scheduled Task
1Defense Evasion
File and Directory Permissions Modification
1Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
2