Ransom:Win32/StopCrypt.PBG!MTB (file analysis)

The Ransom:Win32/StopCrypt.PBG!MTB is considered dangerous by lots of security experts. When this infection is active, you may notice unwanted processes in Task Manager list. In this case, it is adviced to scan your computer with GridinSoft Anti-Malware.

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What Ransom:Win32/StopCrypt.PBG!MTB virus can do?

• SetUnhandledExceptionFilter detected (possible anti-debug)
• Behavioural detection: Executable code extraction – unpacking
• Yara rule detections observed from a process memory dump/dropped files/CAPE
• Creates RWX memory
• Checks adapter addresses which can be used to detect virtual network interfaces
• A process attempted to delay the analysis task.
• Dynamic (imported) function loading detected
• Performs HTTP requests potentially not found in PCAP.
• HTTPS urls from behavior.
• Enumerates running processes
• A process created a hidden window
• CAPE extracted potentially suspicious content
• Unconventionial language used in binary resources: Korean
• The binary likely contains encrypted or compressed data.
• Authenticode signature is invalid
• Behavioural detection: Injection (Process Hollowing)
• Executed a process and injected code into it, probably while unpacking
• Writes a potential ransom message to disk
• Behavioural detection: Injection (inter-process)
• Behavioural detection: Transacted Hollowing
• Created a process from a suspicious location
• Collects and encrypts information about the computer likely to send to C2 server
• Installs itself for autorun at Windows startup
• STOP ransomware registry artifacts detected
• Likely virus infection of existing system binary
• CAPE detected the STOP malware family
• Attempts to modify proxy settings
• Creates a copy of itself
• Creates a known STOP-Djvu ransomware decryption instruction / key file.
• Creates a known STOP ransomware variant mutex
• STOP ransomware command line behavior detected
• Uses suspicious command line tools or Windows utilities

How to determine Ransom:Win32/StopCrypt.PBG!MTB?

File Info:
name: 63DFBC87496C21D3C9A0.mlw
path: /opt/CAPEv2/storage/binaries/85561249bcc274ae86903b2e100eae3b90305b258bc43ebef57789a2b2994bc0
crc32: 6BCC3807
md5: 63dfbc87496c21d3c9a0f556b1fcc655
sha1: 5d10ff8e26d0a690d6c9ca579feb05ae54dd1040
sha256: 85561249bcc274ae86903b2e100eae3b90305b258bc43ebef57789a2b2994bc0
sha512: 4c10fe6c8bf8c3b34dbb5f7d4c7437d24d6600223c8d0ec868de87228995d4244b5fd45251e5c9abbe7c07a06b9cc4e8d4f89a3b5198bc9e807e2553eb1c4fcc
ssdeep: 12288:UupOeIEPjmhLBptFDHTBSdgH+Vb3HH8tURBT1VBWNZHj/ttKIX+eCBPfu:LM+P4HHzBSY0b3HH8KSD/t6Pfu
type: PE32 executable (GUI) Intel 80386, for MS Windows
tlsh: T1DE050110AB90D435F1F316F85A7683ADF83D3AA16B3590CB12D526EE47399E1EC3121B
sha3_384: b8830a1b7178ca2cfac7b610878df94f6441da6f3559d7ea66ab3109cd5865d6b6ad85e9d579e1e00c1757056834056c
ep_bytes: 8bff558bece856b40000e8110000005d
timestamp: 2021-04-23 13:00:47

Version Info:
Translations: 0x0151 0x036f

Ransom:Win32/StopCrypt.PBG!MTB also known as:

How to remove Ransom:Win32/StopCrypt.PBG!MTB?

• Download and install GridinSoft Anti-Malware.
• Open GridinSoft Anti-Malware and perform a “Standard scan“.
• “Move to quarantine” all items.
• Open “Tools” tab – Press “Reset Browser Settings“.
• Select proper browser and options – Click “Reset”.
• Restart your computer.