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Windows
Analysis Report
3485f3cbe491a8770a5f05f4cfcd7742a6182fc61a450d2f8d364ca4c0af1c2e_payload.exe
Overview
General Information
Detection
Babuk, Djvu
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Found ransom note / readme
Malicious sample detected (through community Yara rule)
Snort IDS alert for network traffic
Yara detected Babuk Ransomware
Yara detected Djvu Ransomware
C2 URLs / IPs found in malware configuration
Found stalling execution ending in API Sleep call
Infects executable files (exe, dll, sys, html)
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
Contains functionality to dynamically determine API calls
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to query network adapater information
Contains functionality to record screenshots
Contains functionality which may be used to detect a debugger (GetProcessHeap)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected potential crypto function
Drops PE files
Drops certificate files (DER)
Extensive use of GetProcAddress (often used to hide API calls)
Found dropped PE file which has not been started or loaded
Found evaded block containing many API calls
Found evasive API chain (may stop execution after checking a module file name)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
IP address seen in connection with other malware
Internet Provider seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Uses 32bit PE files
Uses Microsoft's Enhanced Cryptographic Provider
Uses cacls to modify the permissions of files
Uses code obfuscation techniques (call, push, ret)
Yara signature match
Classification
- System is w10x64
- 3485f3cbe491a8770a5f05f4cfcd7742a6182fc61a450d2f8d364ca4c0af1c2e_payload.exe (PID: 7476 cmdline:
C:\Users\u ser\Deskto p\3485f3cb e491a8770a 5f05f4cfcd 7742a6182f c61a450d2f 8d364ca4c0 af1c2e_pay load.exe MD5: DE93E8A0692DB2C2F178270B8DA7B5D7) - icacls.exe (PID: 7520 cmdline:
icacls "C: \Users\use r\AppData\ Local\efb8 6700-3538- 49da-812c- 9949f1bdad 55" /deny *S-1-1-0:( OI)(CI)(DE ,DC) MD5: 2E49585E4E08565F52090B144062F97E) - 3485f3cbe491a8770a5f05f4cfcd7742a6182fc61a450d2f8d364ca4c0af1c2e_payload.exe (PID: 7568 cmdline:
"C:\Users\ user\Deskt op\3485f3c be491a8770 a5f05f4cfc d7742a6182 fc61a450d2 f8d364ca4c 0af1c2e_pa yload.exe" --Admin I sNotAutoSt art IsNotT ask MD5: DE93E8A0692DB2C2F178270B8DA7B5D7)
- 3485f3cbe491a8770a5f05f4cfcd7742a6182fc61a450d2f8d364ca4c0af1c2e_payload.exe (PID: 7620 cmdline:
C:\Users\u ser\AppDat a\Local\ef b86700-353 8-49da-812 c-9949f1bd ad55\3485f 3cbe491a87 70a5f05f4c fcd7742a61 82fc61a450 d2f8d364ca 4c0af1c2e_ payload.ex e --Task MD5: DE93E8A0692DB2C2F178270B8DA7B5D7)
- 3485f3cbe491a8770a5f05f4cfcd7742a6182fc61a450d2f8d364ca4c0af1c2e_payload.exe (PID: 7708 cmdline:
"C:\Users\ user\AppDa ta\Local\e fb86700-35 38-49da-81 2c-9949f1b dad55\3485 f3cbe491a8 770a5f05f4 cfcd7742a6 182fc61a45 0d2f8d364c a4c0af1c2e _payload.e xe" --Auto Start MD5: DE93E8A0692DB2C2F178270B8DA7B5D7)
- 3485f3cbe491a8770a5f05f4cfcd7742a6182fc61a450d2f8d364ca4c0af1c2e_payload.exe (PID: 7868 cmdline:
"C:\Users\ user\AppDa ta\Local\e fb86700-35 38-49da-81 2c-9949f1b dad55\3485 f3cbe491a8 770a5f05f4 cfcd7742a6 182fc61a45 0d2f8d364c a4c0af1c2e _payload.e xe" --Auto Start MD5: DE93E8A0692DB2C2F178270B8DA7B5D7)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Babuk | Babuk Ransomware is a sophisticated ransomware compiled for several platforms. Windows and ARM for Linux are the most used compiled versions, but ESX and a 32bit old PE executable were observed over time. as well It uses an Elliptic Curve Algorithm (Montgomery Algorithm) to build the encryption keys. | No Attribution |
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
STOP, Djvu | STOP Djvu Ransomware it is a ransomware which encrypts user data through AES-256 and adds one of the dozen available extensions as marker to the encrypted file's name. It is not used to encrypt the entire file but only the first 5 MB. In its original version it was able to run offline and, in that case, it used a hard-coded key which could be extracted to decrypt files. | No Attribution |
{"Download URLs": [""], "C2 url": "http://zexeq.com/test2/get.php", "Ransom note file": "_readme.txt", "Ransom note": "ATTENTION!\r\n\r\nDon't worry, you can return all your files!\r\nAll your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key.\r\nThe only method of recovering files is to purchase decrypt tool and unique key for you.\r\nThis software will decrypt all your encrypted files.\r\nWhat guarantees you have?\r\nYou can send one of your encrypted file from your PC and we decrypt it for free.\r\nBut we can decrypt only 1 file for free. File must not contain valuable information.\r\nYou can get and look video overview decrypt tool:\r\nhttps://we.tl/t-eyUsqpKbFl\r\nPrice of private key and decrypt software is $980.\r\nDiscount 50% available if you contact us first 72 hours, that's price for you is $490.\r\nPlease note that you'll never restore your data without payment.\r\nCheck your e-mail \"Spam\" or \"Junk\" folder if you don't get answer more than 6 hours.\r\n\r\n\r\nTo get this software you need write on our e-mail:\r\nsupport@freshmail.top\r\n\r\nReserve e-mail address to contact us:\r\ndatarestorehelp@airmail.cc\r\n\r\nYour personal ID:\r\n0816JOsie", "Ignore Files": ["ntuser.dat", "ntuser.dat.LOG1", "ntuser.dat.LOG2", "ntuser.pol", ".sys", ".ini", ".DLL", ".dll", ".blf", ".bat", ".lnk", ".regtrans-ms", "C:\\SystemID\\", "C:\\Users\\Default User\\", "C:\\Users\\Public\\", "C:\\Users\\All Users\\", "C:\\Users\\Default\\", "C:\\Documents and Settings\\", "C:\\ProgramData\\", "C:\\Recovery\\", "C:\\System Volume Information\\", "C:\\Users\\%username%\\AppData\\Roaming\\", "C:\\Users\\%username%\\AppData\\Local\\", "C:\\Windows\\", "C:\\PerfLogs\\", "C:\\ProgramData\\Microsoft\\", "C:\\ProgramData\\Package Cache\\", "C:\\Users\\Public\\", "C:\\$Recycle.Bin\\", "C:\\$WINDOWS.~BT\\", "C:\\dell\\", "C:\\Intel\\", "C:\\MSOCache\\", "C:\\Program Files\\", "C:\\Program Files (x86)\\", "C:\\Games\\", "C:\\Windows.old\\", "D:\\Users\\%username%\\AppData\\Roaming\\", "D:\\Users\\%username%\\AppData\\Local\\", "D:\\Windows\\", "D:\\PerfLogs\\", "D:\\ProgramData\\Desktop\\", "D:\\ProgramData\\Microsoft\\", "D:\\ProgramData\\Package Cache\\", "D:\\Users\\Public\\", "D:\\$Recycle.Bin\\", "D:\\$WINDOWS.~BT\\", "D:\\dell\\", "D:\\Intel\\", "D:\\MSOCache\\", "D:\\Program Files\\", "D:\\Program Files (x86)\\", "D:\\Games\\", "E:\\Users\\%username%\\AppData\\Roaming\\", "E:\\Users\\%username%\\AppData\\Local\\", "E:\\Windows\\", "E:\\PerfLogs\\", "E:\\ProgramData\\Desktop\\", "E:\\ProgramData\\Microsoft\\", "E:\\ProgramData\\Package Cache\\", "E:\\Users\\Public\\", "E:\\$Recycle.Bin\\", "E:\\$WINDOWS.~BT\\", "E:\\dell\\", "E:\\Intel\\", "E:\\MSOCache\\", "E:\\Program Files\\", "E:\\Program Files (x86)\\", "E:\\Games\\", "F:\\Users\\%username%\\AppData\\Roaming\\", "F:\\Users\\%username%\\AppData\\Local\\", "F:\\Windows\\", "F:\\PerfLogs\\", "F:\\ProgramData\\Desktop\\", "F:\\ProgramData\\Microsoft\\", "F:\\Users\\Public\\", "F:\\$Recycle.Bin\\", "F:\\$WINDOWS.~BT\\", "F:\\dell\\", "F:\\Intel\\"], "Public Key": "-----BEGIN PUBLIC KEY-----\\\\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv4l59cnPvyHS7MUq7f+l\\\\nmWik31Q0OnzfKZM8KMJoY+yyFL+S3uDL9PaQxc48MHJcxf+pQ9kwlIqCFp1AISoc\\\\nD8u0WRuNJXpbI822Tk6jY+ocBe38ntpgWsHzMuugGSR4rZz+f4g+rHjhSl73yfWg\\\\nXo8WM6KaBF3hVQKXnqxrSbpyp3STRnNyXF1xEG0q5H8GtE1HVPewj6w73sukHLq7\\\\nnaIJZ131m+quVE3\\/X8KAKbccAihBy8WqIpWFKVObrdaRt9NE\\/0ucb4JC0vpMN43+\\\\nrbV7gx2ad6OZz+phEqMUN8t5js9kHY3mwuM621LU9xjOYs15\\/uBs1woTYINVPXC7\\\\nHwIDAQAB\\\\n-----END PUBLIC KEY-----"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
MALWARE_Win_STOP | Detects STOP ransomware | ditekSHen |
|
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
MALWARE_Win_STOP | Detects STOP ransomware | ditekSHen |
|
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Click to see the 39 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
MALWARE_Win_STOP | Detects STOP ransomware | ditekSHen |
| |
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
Click to see the 25 entries |
⊘No Sigma rule has matched
Timestamp: | 192.168.2.4175.119.10.23149733802833438 01/16/24-00:41:03.506186 |
SID: | 2833438 |
Source Port: | 49733 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4175.119.10.23149746802833438 01/16/24-00:41:20.984825 |
SID: | 2833438 |
Source Port: | 49746 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4175.119.10.23149736802833438 01/16/24-00:41:09.184797 |
SID: | 2833438 |
Source Port: | 49736 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4175.119.10.23149737802833438 01/16/24-00:41:15.342258 |
SID: | 2833438 |
Source Port: | 49737 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | Avira URL Cloud: | ||
Source: | Avira URL Cloud: | ||
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Source: | Avira URL Cloud: |
Source: | Malware Configuration Extractor: |