MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb. 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


KnightCrypt


Vendor detections: 9


Intelligence 9 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb
SHA3-384 hash: 3b4107a9d0a4b6ff4d9f27f82003bd43b2795aa8dbf1a8600ea092fe93735df9680801055e7d6e1c0e7f440c8fff8219
SHA1 hash: af277577f9cc932686ac0f6b3da44133b26c3188
MD5 hash: 1db4a306d07a22b2744c412609a33509
humanhash: alanine-yankee-monkey-hot
File name:SecuriteInfo.com.Trojan.Encoder.37908.9450.12930
Download: download sample
Signature KnightCrypt
Create hunting rule
File size:1'392'760 bytes
First seen:2023-09-01 02:33:27 UTC
Last seen:2023-09-04 06:17:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 92ed8fb21c381a073a5e7ca35347f90e (13 x KnightCrypt)
ssdeep 12288:fBVVtkNBJOlMmXP0447OdMyogfJ7gwPueClVVRWM5YDh8xpoPLouMA+nkGGCp+dE:wTcCG0447AMVgfdnTClVm4QLcGRTS
Threatray 16 similar samples on MalwareBazaar
TLSH T1F5556B07B69941E8D43AC1B0CA564332EE71BC950F34A9DF0690B3592F7BEE46B3A711
TrID 63.5% (.EXE) Win64 Executable (generic) (10523/12/4)
12.2% (.EXE) OS/2 Executable (generic) (2029/13)
12.0% (.EXE) Generic Win/DOS Executable (2002/3)
12.0% (.EXE) DOS Executable Generic (2000/1)
File icon (PE):PE icon
dhash icon 40317969e9e96000 (17 x KnightCrypt, 1 x Knight)
Reporter SecuriteInfoCom
Tags:exe KnightCrypt

Intelligence

File Origin
# of uploads :
3
# of downloads :
281
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.Encoder.37908.9450.12930
Verdict:
No threats detected
Analysis date:
2023-09-01 02:34:33 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/af472668-897f-485d-984e-3407e64dc8c2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/445558/
Detection(s):
SecuriteInfo.com.Trojan.Encoder.37908.9450.12930.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Launching cmd.exe command interpreter
Creating a file in the %temp% directory
Launching a process
Creating a file in the mass storage device
Unauthorized injection to a system process
Encrypting user's files
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug control explorer greyware lolbin overlay packed phishing shell32
Link:
https://www.filescan.io/uploads/64f14d9d5ec4a86232627350/reports/7f8b7bff-8775-4f92-bc53-4a2c10952333/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/28a39ef0-d8bb-4808-9aa7-3f54654b7568
Result
Threat name:
KnightCrypt
Create hunting rule
Detection:
malicious
Classification:
evad.rans.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1301403
Signature
Antivirus detection for dropped file
Connects to many different private IPs (likely to spread or exploit)
Connects to many different private IPs via SMB (likely to spread or exploit)
Found evasive API chain (may stop execution after checking mutex)
Found hidden mapped module (file has been removed from disk)
Found ransom note / readme
Found Tor onion address
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Maps a DLL or memory area into another process
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
System process connects to network (likely due to code injection or exploit)
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Writes to foreign memory regions
Yara detected KnightCrypt Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1301403 Sample: SecuriteInfo.com.Trojan.Enc... Startdate: 01/09/2023 Architecture: WINDOWS Score: 100 50 Antivirus detection for dropped file 2->50 52 Multi AV Scanner detection for dropped file 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 5 other signatures 2->56 7 SecuriteInfo.com.Trojan.Encoder.37908.9450.12930.exe 4 2->7         started        process3 dnsIp4 32 nginx.org 7->32 34 i.ibb.co 7->34 58 Writes to foreign memory regions 7->58 60 Maps a DLL or memory area into another process 7->60 11 cmd.exe 2 7->11         started        signatures5 process6 file7 30 C:\Users\user\AppData\Local\Temp\ossfqbl, PE32+ 11->30 dropped 62 Injects code into the Windows Explorer (explorer.exe) 11->62 64 Writes to foreign memory regions 11->64 66 Found hidden mapped module (file has been removed from disk) 11->66 68 Maps a DLL or memory area into another process 11->68 15 explorer.exe 30 66 11->15         started        20 conhost.exe 11->20         started        signatures8 process9 dnsIp10 36 192.168.2.100 unknown unknown 15->36 38 192.168.2.101 unknown unknown 15->38 40 98 other IPs or domains 15->40 22 C:\...\LocalizedData.xml.knight_l (copy), DOS 15->22 dropped 24 C:\...\LocalizedData.xml, DOS 15->24 dropped 26 C:\...\SetupResources.dll.knight_l (copy), DOS 15->26 dropped 28 130 other malicious files 15->28 dropped 42 System process connects to network (likely due to code injection or exploit) 15->42 44 Connects to many different private IPs via SMB (likely to spread or exploit) 15->44 46 Connects to many different private IPs (likely to spread or exploit) 15->46 48 5 other signatures 15->48 file11 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb/
Threat name:
Win64.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2023-08-30 11:59:46 UTC
File Type:
PE+ (Exe)
Extracted files:
3
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h67n7onod2n4554ygsiretr2kcjx7hcsbg347qtbigl2f2aelt5q._file
Verdict:
malicious
Similar samples:
04b99b0b9a0e98d04478003c86bf4fa3d20c56313c716b62e7be74ae7b95bf70
KnightCrypt
0701df6ec96aaea2af21707445fdfd8812dd8b7c7e695b920eedca205518826c
KnightCrypt
08d8bd49d5248a1ceca14cd69f327f6685dbc44887aab5a14eb79c71baa123c1
KnightCrypt
66871cebfa92f04476679fb3b00a125f7eb43ea35cfb8b187b4aa2bbd0230c10
KnightCrypt
6ae637c07dea5f9186ac3e6090664fdbcf8523fe82a8a94d70ca2cf69db630e1
KnightCrypt
7aa4903001e55982d11c76c178d9006aaaf137c5a941067cc6bf1b91edde62a1
KnightCrypt
b287c0bc239b434b90eef01bcbd00ff48192b7cbeb540e568b8cdcdc26f90959
KnightCrypt
bd043af859a796897462ed7a5aadb1c4a145f67f01a00c49b45a4b80564da6bb
KnightCrypt
e62d6e57a7ab153771d9c550062cc67f6d5befcc52286bd6f1543201f7088acd
KnightCrypt
e6ea06c6f7b53007e854e986734e79bb0dd84680611e9a3ee9e586cc7a964bd2
KnightCrypt
+ 6 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
ransomware
Link:
https://tria.ge/reports/230901-c2fbqacb36/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Suspicious use of SetThreadContext
Drops desktop.ini file(s)
Enumerates connected drives
Renames multiple (177) files with added filename extension
Unpacked files
SH256 hash:
3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb
MD5 hash:
1db4a306d07a22b2744c412609a33509
SHA1 hash:
af277577f9cc932686ac0f6b3da44133b26c3188
Link:
https://www.unpac.me/results/d937cdb8-fb64-403e-9733-3892f1b18029/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.58
Link:
https://yomi.yoroi.company/submissions/3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants

File information

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

Web download

KnightCrypt

Executable exe 3fbedfb9ae1e9bcef7983491124e3a50937f9c5209b7cfc2614197a2e8045cfb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2708091/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/445558/

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