MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57cf4470348e3b5da0fa3152be84a81a5e2ce5d794976387be290f528fa419fd. 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


NetWalker


Vendor detections: 7


Intelligence 7 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 57cf4470348e3b5da0fa3152be84a81a5e2ce5d794976387be290f528fa419fd
SHA3-384 hash: b8c8d0735f909182364aec691b624dd3d3c8044a3a6e2001d9c5854e2a75f740a3c14b7003a34cf56117c37f82d5856a
SHA1 hash: 3a233709f22db2e63f41c9f095bc1bc3e1e6932d
MD5 hash: ce305d1041a5d6068660ea08df86bedd
humanhash: kentucky-pluto-oregon-angel
File name:57cf4470348e3b5da0fa3152be84a81a5e2ce5d794976387be290f528fa419fd.bin
Download: download sample
Signature NetWalker
Create hunting rule
File size:6'333'440 bytes
First seen:2020-08-21 01:11:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f094c9f17a0ceae2e4624b205f593edf (1 x NetWalker)
ssdeep 196608:ug/YT3lIRxdDwcO0bjUDJK1nl2b4vtTmN4:p/Y5IJDG2gEB9mN4
Threatray 1 similar samples on MalwareBazaar
TLSH 2256137353A100D4D1E6C83A8D37BEE475F7032A8F41A4F661E7ADC52532DE1E623992
Reporter Dashowl
Tags:NetWalker

Intelligence

File Origin
# of uploads :
1
# of downloads :
2'036
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Koko
Create hunting rule
Link:
https://www.capesandbox.com/analysis/49424/
Detection(s):
Win.Ransomware.Netwalker-7671868-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Deleting a system file
Sending a UDP request
Creating a process with a hidden window
Changing a file
Creating a file
Modifying an executable file
Moving a file to the Program Files subdirectory
Creating a file in the Program Files subdirectories
Moving a recently created file
Creating a window
Deleting volume shadow copies
Creating a file in the mass storage device
Encrypting user's files
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/442977
Signature
Antivirus / Scanner detection for submitted sample
Deletes shadow drive data (may be related to ransomware)
Detected VMProtect packer
Hides threads from debuggers
Machine Learning detection for sample
May disable shadow drive data (uses vssadmin)
Multi AV Scanner detection for submitted file
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Tries to detect debuggers by setting the trap flag for special instructions
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/57cf4470348e3b5da0fa3152be84a81a5e2ce5d794976387be290f528fa419fd/
Threat name:
Win32.Ransomware.Mailto
Create hunting rule
Status:
Malicious
First seen:
2020-07-26 17:52:03 UTC
AV detection:
41 of 48 (85.42%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=k7hui4bury5v3ih2gfjl5bfidjpczzoxsslwhb56fehvfd5edh6q._file
Verdict:
suspicious
Similar samples:
84783081ade87f5a4a1902a275eb66c7fe8ebef9e43cdd2d4527bdb1a5a51f04
NetWalker
Result
Malware family:
n/a
Score:
  8/10
Tags:
vmprotect
Link:
https://tria.ge/reports/200821-xz7h791bta/
Behaviour
VMProtect packed file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Filecoder
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/57cf4470348e3b5da0fa3152be84a81a5e2ce5d794976387be290f528fa419fd

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:netwalker_ransomware
Create hunting rule
Author:Marc Rivero | McAfee ATR Team
Description:Rule to detect Netwalker ransomware
Reference:https://www.ccn-cert.cni.es/comunicacion-eventos/comunicados-ccn-cert/9802-publicado-un-informe-de-codigo-danino-sobre-netwalker.html
Rule name:suspicious_packer_section
Create hunting rule
Author:@j0sm1
Description:The packer/protector section names/keywords
Reference:http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/49424/

Comments