MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd. 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


RustyStealer


Vendor detections: 10


Intelligence 10 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd
SHA3-384 hash: 3e602e0368fcea579c4909e2afddd8444d62504a392c8c1ac30df3825bb6c64a0f8a44f53d7e148e44d4999450ad3a6d
SHA1 hash: ff96db4b937971ca2d60e785ff9f706a50e51de4
MD5 hash: 61d7585b5702d195bc35e0be2f75915c
humanhash: island-papa-may-twelve
File name:66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd
Download: download sample
Signature RustyStealer
Create hunting rule
File size:5'418'496 bytes
First seen:2025-01-12 17:46:37 UTC
Last seen:2025-07-30 09:44:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 1e41fb75ac9d81dd3232625eb35fc98e (1 x RustyStealer)
ssdeep 49152:HROwx5VY3snY+kk0CNMgj7HhSo7d4SJGlgIufYqfdv+5wLeVtkJ9EQrzSeGJbE39:jdHZOeYUVAKP6Tq
TLSH T14D463A12BB6A99ADC45AC0B083568B726A7134CA0B3579FF44C442793E6DEF42F3C758
TrID 44.4% (.EXE) Win64 Executable (generic) (10522/11/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter TheRavenFile
Tags:exe funklocker funksec Ransomware RustyStealer


Avatar
RakeshKrish12
Source: https://github.com/TheRavenFile/IOC/blob/main/FUNKSEC%20Ransomware

Intelligence

File Origin
# of uploads :
2
# of downloads :
220
Origin country :
IN IN
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd
Verdict:
Suspicious activity
Analysis date:
2025-01-13 00:44:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c6d86d66-e660-4b69-b062-f939765c920b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Clean
Score:
82.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678400192c8240e189bc256c
Tags:
n/a
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a file
Launching the process to interact with network services
Launching a process
DNS request
Connection attempt
Sending a custom TCP request
Changing a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug microsoft_visual_cc
Link:
https://www.filescan.io/uploads/67840018f093d6ed187f04f9/reports/7b2b82d2-2b0d-4fdf-8e8f-71de28703f6d/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0d8cbefb-e41a-4aa9-a9d8-af04e5fa53a7
Result
Threat name:
FunkLocker
Create hunting rule
Detection:
malicious
Classification:
rans
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1589528
Signature
AI detected suspicious sample
Multi AV Scanner detection for submitted file
Yara detected FunkLocker Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1589528 Sample: SjDqoVVmzX.exe Startdate: 12/01/2025 Architecture: WINDOWS Score: 60 17 ipv4.imgur.map.fastly.net 2->17 19 i.imgur.com 2->19 23 Multi AV Scanner detection for submitted file 2->23 25 Yara detected FunkLocker Ransomware 2->25 27 AI detected suspicious sample 2->27 8 SjDqoVVmzX.exe 3 2->8         started        signatures3 process4 dnsIp5 21 ipv4.imgur.map.fastly.net 199.232.196.193, 443, 49704 FASTLYUS United States 8->21 11 net.exe 1 8->11         started        13 conhost.exe 8->13         started        process6 process7 15 net1.exe 1 11->15         started       
Score:
84%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd/
Threat name:
Win64.Ransomware.Funksec
Create hunting rule
Status:
Malicious
First seen:
2024-12-31 12:59:37 UTC
File Type:
PE+ (Exe)
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=m3n7sooabme5rurmneugjnumjjqc46szys4slmxcx32xwgwqi66q._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
ransomware
Link:
https://tria.ge/reports/250112-wcvjwssket/
Behaviour
Runs net.exe
Suspicious use of WriteProcessMemory
Sets desktop wallpaper using registry
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/0340e89c-652d-4000-8407-e796440ab26b
Unpacked files
SH256 hash:
66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd
MD5 hash:
61d7585b5702d195bc35e0be2f75915c
SHA1 hash:
ff96db4b937971ca2d60e785ff9f706a50e51de4
Link:
https://www.unpac.me/results/77abb6b3-3678-40ec-96f6-4bfc6e4fbbe3/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/66dbf939c00b09d8d22c692864b68c4a602e7a59c4b925b2e2bef57b1ad047bd

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:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:reverse_http
Create hunting rule
Author:CD_R0M_
Description:Identify strings with http reversed (ptth)
Rule name:Rustyloader_mem_loose
Create hunting rule
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
SS_APIUses SS APIsecur32.dll::AcceptSecurityContext
secur32.dll::AcquireCredentialsHandleA
secur32.dll::ApplyControlToken
secur32.dll::DecryptMessage
secur32.dll::DeleteSecurityContext
secur32.dll::QueryContextAttributesW
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CreateProcessW
kernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryA
kernel32.dll::GetSystemInfo
kernel32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WriteConsoleW
kernel32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileW
ntdll.dll::NtCreateFile
ntdll.dll::NtDeviceIoControlFile
kernel32.dll::GetWindowsDirectoryW
kernel32.dll::GetSystemDirectoryW
kernel32.dll::GetFileAttributesW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptGenRandom
WIN_CRYPT_APIUses Windows Crypt APIcrypt32.dll::CertAddCertificateContextToStore
crypt32.dll::CertDuplicateCertificateChain
crypt32.dll::CertDuplicateCertificateContext
crypt32.dll::CertDuplicateStore
crypt32.dll::CertEnumCertificatesInStore
crypt32.dll::CertFreeCertificateChain
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyExW
advapi32.dll::RegQueryValueExW
WIN_SOCK_APIUses Network to send and receive dataws2_32.dll::bind
ws2_32.dll::closesocket
ws2_32.dll::connect
ws2_32.dll::freeaddrinfo
ws2_32.dll::getaddrinfo
ws2_32.dll::getpeername

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