MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac. 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: 12


Intelligence 12 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac
SHA3-384 hash: 747ec3081e46ea16d158337f910ef4cd8156370523f0980302824c8e43083baad9b072e07fd0b58dc2cc59003c3884e3
SHA1 hash: 1732202d4d9f130fafc3b9a4cad9995e0eda03d7
MD5 hash: 2456fdd65bc48203815f22e444d78fb0
humanhash: equal-arizona-rugby-oranges
File name:dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac
Download: download sample
Signature RustyStealer
Create hunting rule
File size:5'444'608 bytes
First seen:2025-01-12 17:47:09 UTC
Last seen:2025-07-30 09:44:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ce5f91eb3b1ebc7df7d7ab97a153e7b7 (2 x RustyStealer)
ssdeep 49152:Br/rw+39KLrK3UwcLzRj5i0B6FN0uckTMEuYqxqyZH5biWJZ2pX5uUV6PS4Raps5:PKLr7+0t9NP1t69OYn2m
TLSH T14B462A22BB5A99ADC49AC0B0835687B2697134CB0B3579FF45C442783E69EF42F3C758
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 :
222
Origin country :
IN IN
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac
Verdict:
Suspicious activity
Analysis date:
2025-01-13 00:34:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/69589611-881a-427e-83f7-286424aeb8d2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678400552c8240e189bc2590
Tags:
virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Reading critical registry keys
Searching for the window
Stealing user critical data
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-debug microsoft_visual_cc ransomware
Link:
https://www.filescan.io/uploads/67840054f093d6ed187f0504/reports/e0efbf60-7bb2-4df7-b8d3-8145229065b5/overview
Verdict:
Malicious
Link:
https://www.hybrid-analysis.com/sample/dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac
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/bf8f8084-a126-4e56-9e35-95c406a8ddb9
Result
Threat name:
FunkLocker
Create hunting rule
Detection:
malicious
Classification:
rans
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1589530
Signature
AI detected suspicious sample
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for submitted file
Yara detected FunkLocker Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1589530 Sample: siy9g3WGCc.exe Startdate: 12/01/2025 Architecture: WINDOWS Score: 64 18 ipv4.imgur.map.fastly.net 2->18 20 i.imgur.com 2->20 24 Multi AV Scanner detection for submitted file 2->24 26 Yara detected FunkLocker Ransomware 2->26 28 AI detected suspicious sample 2->28 8 siy9g3WGCc.exe 15 2->8         started        signatures3 process4 dnsIp5 22 ipv4.imgur.map.fastly.net 199.232.196.193, 443, 49699 FASTLYUS United States 8->22 30 Modifies existing user documents (likely ransomware behavior) 8->30 12 net.exe 1 8->12         started        14 conhost.exe 8->14         started        signatures6 process7 process8 16 net1.exe 1 12->16         started       
Score:
74%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac/
Threat name:
Win64.Ransomware.Funksec
Create hunting rule
Status:
Malicious
First seen:
2024-12-31 15:39:55 UTC
File Type:
PE+ (Exe)
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=3t2tn3owpkminb2z6ttsxs6r6raey4aerivdev7hpwfpa3fqg2wa._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
ransomware
Link:
https://tria.ge/reports/250112-wdevtsskgy/
Behaviour
Runs net.exe
Suspicious use of WriteProcessMemory
Sets desktop wallpaper using registry
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/00a1a54e-8baf-4fa4-aaba-3f022c413dd2
Unpacked files
SH256 hash:
dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac
MD5 hash:
2456fdd65bc48203815f22e444d78fb0
SHA1 hash:
1732202d4d9f130fafc3b9a4cad9995e0eda03d7
Link:
https://www.unpac.me/results/d8547b70-d3de-4a8f-9cb3-73d8b5b97e0b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/dcf536edd67a/report/overview.html
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/dcf536edd67a98868759f4e72bcbd1f4404c70048a2a3257e77d8af06cb036ac

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
kernel32.dll::DeleteFileW
ntdll.dll::NtDeviceIoControlFile
kernel32.dll::GetWindowsDirectoryW
kernel32.dll::GetSystemDirectoryW
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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