MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec. 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: 10


Intelligence 10 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec
SHA3-384 hash: 152eb6f6272885df73ea79ff7941c5dce34ed7674b3edcaca40a349e65088124dc75cb04249ba8bb116cc435768f784c
SHA1 hash: e0e0635c41bbf9450f946e4bb169f26733ee3aaf
MD5 hash: d29b59f362de7d0db11ed6f01209a2b4
humanhash: arkansas-bravo-delta-lima
File name:2.bin
Download: download sample
Signature KnightCrypt
Create hunting rule
File size:1'863'880 bytes
First seen:2023-08-29 13:17:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash be843536fdc17a2b5e02f8f44a2ad7ee (9 x KnightCrypt)
ssdeep 24576:XucUS55cDR3NgJ4zJ1H+QI84rncvGt3nE6vlTlvxBkTde/cfkRg:XucUS55cHgJIzez8+n9Bn3NTfBkYokRg
Threatray 2 similar samples on MalwareBazaar
TLSH T1AC857C4BB6A441F8D0BBC27989528647EBB178150F30ABDF16A4539A1F33BE15E3E311
TrID 90.1% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
4.8% (.EXE) Win64 Executable (generic) (10523/12/4)
2.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
0.9% (.EXE) OS/2 Executable (generic) (2029/13)
0.9% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 40317969e9e96000 (17 x KnightCrypt, 1 x Knight)
Reporter JAMESWT_WT
Tags:89-23-96-203 exe KnightCrypt

Intelligence

File Origin
# of uploads :
1
# of downloads :
318
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2.bin
Verdict:
Malicious activity
Analysis date:
2023-08-29 13:19:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/7a36b1a6-d5cd-4a3f-a152-7b44b1f6c437

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/445093/
Detection(s):
SecuriteInfo.com.Win64.Malware-gen.23931.1085.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
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-vm control greyware lolbin masquerade overlay packed replace setupapi shell32
Link:
https://www.filescan.io/uploads/64edf00b5ec4a8623261a32f/reports/08cce5fa-bbe1-4684-8b8e-6019a2d6318b/overview
Verdict:
Malicious
Labled as:
Trojan[Backdoor]/Remcos
Link:
https://www.hybrid-analysis.com/sample/f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec
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/cd80eb8d-0b95-4ed3-b34b-bc6a6320ad93
Result
Threat name:
KnightCrypt
Create hunting rule
Detection:
malicious
Classification:
evad.rans.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1299626
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 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
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 to foreign memory regions
Yara detected KnightCrypt Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1299626 Sample: 2.bin.exe Startdate: 29/08/2023 Architecture: WINDOWS Score: 100 64 Antivirus detection for dropped file 2->64 66 Multi AV Scanner detection for dropped file 2->66 68 Found ransom note / readme 2->68 70 4 other signatures 2->70 8 2.bin.exe 8 2->8         started        process3 dnsIp4 50 www.doi.org 8->50 52 i.ibb.co 8->52 54 2 other IPs or domains 8->54 36 C:\Users\user\AppData\Roaming\...\UXCore.dll, PE32 8->36 dropped 38 C:\Users\user\AppData\...\Dashboard.exe, PE32 8->38 dropped 40 C:\Users\user\AppData\Roaming\...\msvcr80.dll, PE32 8->40 dropped 12 Dashboard.exe 1 8->12         started        file5 process6 signatures7 80 Maps a DLL or memory area into another process 12->80 15 cmd.exe 2 12->15         started        process8 file9 42 C:\Users\user\AppData\...\jyjswgpxdywikk, PE32+ 15->42 dropped 56 Injects code into the Windows Explorer (explorer.exe) 15->56 58 Writes to foreign memory regions 15->58 60 Found hidden mapped module (file has been removed from disk) 15->60 62 Maps a DLL or memory area into another process 15->62 19 explorer.exe 30 37 15->19         started        24 BackgroundTransferHost.exe 13 15->24         started        26 conhost.exe 15->26         started        signatures10 process11 dnsIp12 44 192.168.2.100 unknown unknown 19->44 46 192.168.2.101 unknown unknown 19->46 48 98 other IPs or domains 19->48 28 C:\Users\...\Wikipedia.url.knight_l (copy), COM 19->28 dropped 30 C:\Users\user\Favorites\Wikipedia.url, COM 19->30 dropped 32 C:\Users\...32VWZAPQSQL.mp3.knight_l (copy), COM 19->32 dropped 34 18 other malicious files 19->34 dropped 72 System process connects to network (likely due to code injection or exploit) 19->72 74 Connects to many different private IPs via SMB (likely to spread or exploit) 19->74 76 Connects to many different private IPs (likely to spread or exploit) 19->76 78 3 other signatures 19->78 file13 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec/
Threat name:
Win64.Trojan.Casdet
Create hunting rule
Status:
Malicious
First seen:
2023-08-29 11:13:40 UTC
File Type:
PE+ (Exe)
Extracted files:
3
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6jlrimoj3duhbambnvdm3kn55dmywcaqk364eekordf22lkujtwa._file
Verdict:
unknown
Similar samples:
1341bd6193ea223c05566aaca13fc1152732b67af8344519d6efaaf9ab6ed5f4
KnightCrypt
3bd52cefc9d88c5292275729ca096c131a5db8c77ec142493a066623270cb782
KnightCrypt
Result
Malware family:
n/a
Score:
  10/10
Tags:
ransomware
Link:
https://tria.ge/reports/230829-qjx1psff5v/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Drops desktop.ini file(s)
Enumerates connected drives
Executes dropped EXE
Loads dropped DLL
Renames multiple (180) files with added filename extension
Suspicious use of NtCreateUserProcessOtherParentProcess
Unpacked files
SH256 hash:
f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec
MD5 hash:
d29b59f362de7d0db11ed6f01209a2b4
SHA1 hash:
e0e0635c41bbf9450f946e4bb169f26733ee3aaf
Link:
https://www.unpac.me/results/69014297-7100-4ba2-ac3d-eb441cdbdda3/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.53
Link:
https://yomi.yoroi.company/submissions/f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec

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:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

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

Web download

KnightCrypt

Executable exe f2571431c9d8e87081816d46cda9bde8d98b081056fdc2114e88cbad2d544cec

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/445093/
  
URLhaus
https://urlhaus.abuse.ch/url/2708091/
  
Delivery method
Distributed via web download

Comments