MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 8a139fcd70cf23b397ef1bb31a6b8a5990bd2018bd7e42da6db865a52d49549d. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
VirLock
Vendor detections: 5
| SHA256 hash: | 8a139fcd70cf23b397ef1bb31a6b8a5990bd2018bd7e42da6db865a52d49549d |
|---|---|
| SHA3-384 hash: | 8f75aba775706fca1b14e5bc3ecb8307f3ecbffa7089e40d5dd950f6152632d98a36144d1c3db987339f9d78db9556de |
| SHA1 hash: | ed46dc2f79f23c16770bfcdd744f5a8b617abdf7 |
| MD5 hash: | 35b88507a772ca1527bfff4502ed9ba7 |
| humanhash: | two-king-foxtrot-red |
| File name: | 35b88507_by_Libranalysis |
| Download: | download sample |
| Signature | VirLock |
| File size: | 766'464 bytes |
| First seen: | 2021-05-05 08:06:04 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7ecb99bed713cc2dea903ebec59bd84e (1 x VirLock) |
| ssdeep | 12288:O9+0h7yZ0Ai8jqLoBUCaaUIeMMFdKfZwHENrwnuDG8iFMIjKMQpapTm:OfhOZ0A7ekaaQdKfZfZoLX1QApTm |
| Threatray | 49 similar samples on MalwareBazaar |
| TLSH | E0F4AD794B9B4033FF94A7BE788FBEA9201BC3BAD1EEB22957C74AC11148E315135419 |
| Reporter |  Libranalysis |
Intelligence
File Origin
# of uploads :
1
# of downloads :
90
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file
Creating a process from a recently created file
Creating a service
Launching a service
DNS request
Creating a file in the Windows subdirectories
Sending an HTTP GET request
Creating a file in the %temp% directory
Running batch commands
Deleting a recently created file
Launching a process
Creating a process with a hidden window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun for a service
Enabling autorun
Brute forcing passwords of local accounts
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Threat name:
Win32.Ransomware.VirLock
Status:
Malicious
First seen:
2020-05-17 22:42:00 UTC
AV detection:
47 of 48 (97.92%)
Threat level:
5/5
Verdict:
malicious
Similar samples:
+ 39 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
10/10
Tags:
evasion persistence ransomware spyware stealer trojan
Behaviour
Modifies registry key
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Adds Run key to start application
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Modifies extensions of user files
Modifies WinLogon for persistence
Modifies visibility of file extensions in Explorer
UAC bypass
Unpacked files
SH256 hash:
b6ec45f70313f259e0d85ad3babdc2d37e203944e5787b106bd7809903e860d3
MD5 hash:
137d345885bf7e2728ad0d6452424588
SHA1 hash:
344443b96c9d6e560c2e7e3b3d12ffa95946be24
SH256 hash:
bf7bcd8aee42823574f9e7ef7ac5bede87e2e840fc7629ab3d4667acda118038
MD5 hash:
3eff79478401bbdf9d4d408feefbbed7
SHA1 hash:
17e93496656879a90a3a6a80897d6ad49ecac03d
SH256 hash:
8a139fcd70cf23b397ef1bb31a6b8a5990bd2018bd7e42da6db865a52d49549d
MD5 hash:
35b88507a772ca1527bfff4502ed9ba7
SHA1 hash:
ed46dc2f79f23c16770bfcdd744f5a8b617abdf7
Please note that we are no longer able to provide a coverage score for Virus Total.
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Comments
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MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009.029] Anti-Behavioral Analysis::Instruction Testing
1) [C0026.002] Data Micro-objective::XOR::Encode Data
2) [C0030.001] Data Micro-objective::MurmurHash::Non-Cryptographic Hash