MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a39c0bcc5b40d8a5a0eb9beffaa571b3fb9493dd5ef19cc587d31ce5765737a1. 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



GCleaner


Vendor detections: 16


Intelligence 16 IOCs YARA 5 File information Comments

SHA256 hash: a39c0bcc5b40d8a5a0eb9beffaa571b3fb9493dd5ef19cc587d31ce5765737a1
SHA3-384 hash: 5628bba272ca9855f64ba88e0ab134d80736ea827fb1eba733917f4a3543057b8a9e00d2f9cc97645a40a55d82a6fbfd
SHA1 hash: 28dd16ef07f4f565c939fd1b69a23e866514c2ca
MD5 hash: a7eb1be8ac3f41bfd8e558cfed65a746
humanhash: north-ohio-sweet-bravo
File name:random.exe
Download: download sample
Signature GCleaner
File size:4'372'480 bytes
First seen:2025-05-04 16:59:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2eabe9054cad5152567f0699947a2c5b (2'852 x LummaStealer, 1'312 x Stealc, 1'026 x Healer)
ssdeep 98304:UgZNOZ0bNyexdNqjNRN3ds4F5dKfdM+3+3plaOykTV465G6xEv5X:0WQexYfNNs4FCfgAaB
TLSH T1EC1633980C67D280CD9D4EF3C2CDD7B91B716AA99A149225187CF28A2FE4F90BF27454
TrID 35.7% (.EXE) Win32 Executable (generic) (4504/4/1)
16.4% (.EXE) Win16/32 Executable Delphi generic (2072/23)
16.0% (.EXE) OS/2 Executable (generic) (2029/13)
15.8% (.EXE) Generic Win/DOS Executable (2002/3)
15.8% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter abuse_ch
Tags:exe gcleaner

Intelligence


File Origin
# of uploads :
1
# of downloads :
426
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
2025-05-04_17a0b6f4810902e4929ae827ae42f20a_agent-tesla_black-basta_cobalt-strike_darkgate_elex_luca-stealer
Verdict:
Malicious activity
Analysis date:
2025-05-04 15:01:42 UTC
Tags:
auto-sch amadey loader botnet stealer rdp lumma evasion auto-reg auto-startup remote xworm crypto-regex stegocampaign payload ta558 apt reverseloader credentialflusher telegram phishing putty rmm-tool

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
cobalt emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Searching for analyzing tools
Creating a window
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Creating a process from a recently created file
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm borland_delphi packed packed packer_detected
Result
Threat name:
CryptOne
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Detected unpacking (changes PE section rights)
Hides threads from debuggers
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Potentially malicious time measurement code found
Sample uses process hollowing technique
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to evade debugger and weak emulator (self modifying code)
Writes to foreign memory regions
Yara detected CryptOne packer
Behaviour
Behavior Graph:
Threat name:
Win32.Infostealer.Tinba
Status:
Malicious
First seen:
2025-05-04 17:00:21 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Result
Malware family:
gcleaner
Score:
  10/10
Tags:
family:gcleaner defense_evasion discovery loader
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Checks BIOS information in registry
Executes dropped EXE
Identifies Wine through registry keys
Downloads MZ/PE file
Identifies VirtualBox via ACPI registry values (likely anti-VM)
GCleaner
Gcleaner family
Malware Config
C2 Extraction:
45.91.200.135
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
a39c0bcc5b40d8a5a0eb9beffaa571b3fb9493dd5ef19cc587d31ce5765737a1
MD5 hash:
a7eb1be8ac3f41bfd8e558cfed65a746
SHA1 hash:
28dd16ef07f4f565c939fd1b69a23e866514c2ca
SH256 hash:
245d81403b5f128ac7507164d547f3aec5d5679bce7a52a1fdee6e04949da901
MD5 hash:
c77e360f0afd5f57de86f99400c092f6
SHA1 hash:
728489fed5023a81494ce9e469ad276edea403ec
Detections:
GCleaner
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Borland
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:vmdetect
Author:nex
Description:Possibly employs anti-virtualization techniques

File information


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

Web download

GCleaner

Executable exe a39c0bcc5b40d8a5a0eb9beffaa571b3fb9493dd5ef19cc587d31ce5765737a1

(this sample)

  
Delivery method
Distributed via web download

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_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh

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