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Windows
Analysis Report
c62d6a8f03122f152f75051babb0a9ad178223ae33a2205caf5675f29cf3cef3_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
Antivirus detection for dropped file
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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 dropped file
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)
Sigma detected: CurrentVersion Autorun Keys Modification
Tries to load missing DLLs
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
- c62d6a8f03122f152f75051babb0a9ad178223ae33a2205caf5675f29cf3cef3_payload.exe (PID: 6828 cmdline:
C:\Users\u ser\Deskto p\c62d6a8f 03122f152f 75051babb0 a9ad178223 ae33a2205c af5675f29c f3cef3_pay load.exe MD5: 1AAB5A9252E93871932CD7381693E199) - icacls.exe (PID: 3748 cmdline:
icacls "C: \Users\use r\AppData\ Local\15a6 b383-1056- 4ab7-9872- 1a77d608b6 73" /deny *S-1-1-0:( OI)(CI)(DE ,DC) MD5: 2E49585E4E08565F52090B144062F97E) - c62d6a8f03122f152f75051babb0a9ad178223ae33a2205caf5675f29cf3cef3_payload.exe (PID: 6956 cmdline:
"C:\Users\ user\Deskt op\c62d6a8 f03122f152 f75051babb 0a9ad17822 3ae33a2205 caf5675f29 cf3cef3_pa yload.exe" --Admin I sNotAutoSt art IsNotT ask MD5: 1AAB5A9252E93871932CD7381693E199)
- c62d6a8f03122f152f75051babb0a9ad178223ae33a2205caf5675f29cf3cef3_payload.exe (PID: 5776 cmdline:
C:\Users\u ser\AppDat a\Local\15 a6b383-105 6-4ab7-987 2-1a77d608 b673\c62d6 a8f03122f1 52f75051ba bb0a9ad178 223ae33a22 05caf5675f 29cf3cef3_ payload.ex e --Task MD5: 1AAB5A9252E93871932CD7381693E199)
- c62d6a8f03122f152f75051babb0a9ad178223ae33a2205caf5675f29cf3cef3_payload.exe (PID: 5644 cmdline:
"C:\Users\ user\AppDa ta\Local\1 5a6b383-10 56-4ab7-98 72-1a77d60 8b673\c62d 6a8f03122f 152f75051b abb0a9ad17 8223ae33a2 205caf5675 f29cf3cef3 _payload.e xe" --Auto Start MD5: 1AAB5A9252E93871932CD7381693E199)
- c62d6a8f03122f152f75051babb0a9ad178223ae33a2205caf5675f29cf3cef3_payload.exe (PID: 5104 cmdline:
"C:\Users\ user\AppDa ta\Local\1 5a6b383-10 56-4ab7-98 72-1a77d60 8b673\c62d 6a8f03122f 152f75051b abb0a9ad17 8223ae33a2 205caf5675 f29cf3cef3 _payload.e xe" --Auto Start MD5: 1AAB5A9252E93871932CD7381693E199)
- 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": ["http://colisumy.com/dl/build2.exe", "http://zexeq.com/files/1/build3.exe"], "C2 url": "http://zexeq.com/raud/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-OQnsJqCOOl\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 $490.\r\nPlease note that you'll never restore your data without payment.\r\nCheck your e-mail \"Spam\" or \"Junk\" folder if you don't get answer more than 6 hours.\r\n\r\n\r\nTo get this software you need write on our e-mail:\r\nsupport@freshmail.top\r\n\r\nReserve e-mail address to contact us:\r\ndatarestorehelp@airmail.cc\r\n\r\nYour personal ID:\r\n0734SwOsie", "Ignore Files": ["ntuser.dat", "ntuser.dat.LOG1", "ntuser.dat.LOG2", "ntuser.pol", ".sys", ".ini", ".DLL", ".dll", ".blf", ".bat", ".lnk", ".regtrans-ms", "C:\\SystemID\\", "C:\\Users\\Default User\\", "C:\\Users\\Public\\", "C:\\Users\\All Users\\", "C:\\Users\\Default\\", "C:\\Documents and Settings\\", "C:\\ProgramData\\", "C:\\Recovery\\", "C:\\System Volume Information\\", "C:\\Users\\%username%\\AppData\\Roaming\\", "C:\\Users\\%username%\\AppData\\Local\\", "C:\\Windows\\", "C:\\PerfLogs\\", "C:\\ProgramData\\Microsoft\\", "C:\\ProgramData\\Package Cache\\", "C:\\Users\\Public\\", "C:\\$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-----\\\\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnu0nG7aeNA169GxkxNjX\\\\neNRPybTqmtjleCFNjJGArz4ioIdV0UkKIkf6D3VPGtiABEC052HyrDbXophP7h+k\\\\nIOz0jtwFVvDc7r1gIAxAWPb4o2Fk47gJ3fxHLdJGcD6ITWvE04U\\/gybzgIY17AaE\\\\ndJzscVm3\\/TVhquTHfkmleHfH4lem7WBr+yAvsK9v2lTqABxYQs+HlakgFplsaaqv\\\\nqNvuh1QyTIPfXyqLyKtxf8xaSm+fsjLIzzBijqKIPl5LN3RQv1KbB\\/SXOgajs9J1\\\\nEGLIPKChAFu18rMsSGvhBzHldvq7HuocsesAMvzaBqgUULa6B\\/IFOmv\\/3VJo0NYz\\\\nLQIDAQAB\\\\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 |
| |
Windows_Ransomware_Stop_1e8d48ff | unknown | unknown |
| |
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 | ||
JoeSecurity_Djvu | Yara detected Djvu Ransomware | Joe Security | ||
Click to see the 25 entries |
System Summary |
---|
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
Timestamp: | 192.168.2.4199.59.242.15049734802833438 02/12/24-01:36:15.166464 |
SID: | 2833438 |
Source Port: | 49734 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4199.59.242.15049732802020826 02/12/24-01:35:56.488809 |
SID: | 2020826 |
Source Port: | 49732 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
Timestamp: | 192.168.2.4199.59.242.15049732802036333 02/12/24-01:35:56.488809 |
SID: | 2036333 |
Source Port: | 49732 |
Destination Port: | 80 |
Protocol: | TCP |
Classtype: | A Network Trojan was detected |
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Show All Signature Results
AV Detection |
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