MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7. 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: 15


Intelligence 15 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7
SHA3-384 hash: 7253fbe25c19c5197bcc363fe693cda12bb57155fb14819d2639617d66fdcebe956159409eb79de2096b78a4322bbb40
SHA1 hash: 22ea6fe23eeb57d0048d1b0e2a826dd66c6969d9
MD5 hash: 213c0265511727869c959abd24ea3677
humanhash: nebraska-lion-october-coffee
File name:file
Download: download sample
Signature GCleaner
Create hunting rule
File size:50'909 bytes
First seen:2024-05-09 15:42:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (96 x GuLoader, 53 x Formbook, 37 x VIPKeylogger)
ssdeep 1536:XferrLkSRoe8C4UZsys0Dh1duFpxFI+PlZ:Xfi3k+oWDBDh1duFpkWlZ
TLSH T11733BF11E7A0C077D9F2433228363B675FFA952616E45B0B43502F5D3CA3A82E91F7A6
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter Bitsight
Tags:exe gcleaner


Avatar
Bitsight
url: https://vk.com/doc5294803_669420095?hash=1YIkO3gTZecObZ470s6imMbatVf4GTr76dGXyXlTgT8&dl=Gvo6DFjY285lnkr9jmiO0saxrF2bRtx53JCmQtjZCSs&api=1&no_preview=1#1000

Intelligence

File Origin
# of uploads :
1
# of downloads :
328
Origin country :
US US
Vendor Threat Intelligence
Malware family:
lu0bot
Create hunting rule
ID:
1
File name:
3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7.exe
Verdict:
Malicious activity
Analysis date:
2024-05-09 15:44:10 UTC
Tags:
loader adware innosetup gcleaner botnet lu0bot backdoor stealer stealc
Link:
https://app.any.run/tasks/b36cf5c8-1766-494d-9e34-9704c9734676

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalware.9857.27723.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP POST request
Creating a file in the %temp% subdirectories
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Running batch commands
Сreating synchronization primitives
Sending an HTTP GET request to an infection source
Creating a file
Creating a process from a recently created file
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Connecting to a non-recommended domain
Downloading the file
Connection attempt to an infection source
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/663cef07b8652ad994a37265/reports/cc198e6e-ec44-45de-aa72-35126e875db7/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5307f58a-a736-44e2-b0f6-2ab6b0b38528
Result
Threat name:
Mars Stealer, PrivateLoader, PureLog Ste
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1439026
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
Benign windows process drops PE files
C2 URLs / IPs found in malware configuration
Checks if the current machine is a virtual machine (disk enumeration)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Sigma detected: PowerShell DownloadFile
Sigma detected: Powerup Write Hijack DLL
Sigma detected: Set custom UserAgent and download file via Powershell
Snort IDS alert for network traffic
Suspicious powershell command line found
Tries to download and execute files (via powershell)
Yara detected Generic Downloader
Yara detected Mars stealer
Yara detected Powershell download and execute
Yara detected PrivateLoader
Yara detected PureLog Stealer
Yara detected Stealc
Yara detected Vidar stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1439026 Sample: file.exe Startdate: 09/05/2024 Architecture: WINDOWS Score: 100 58 download.iolo.net 2->58 60 240217000509001.uba.hncq52.shop 2->60 62 7 other IPs or domains 2->62 96 Snort IDS alert for network traffic 2->96 98 Multi AV Scanner detection for domain / URL 2->98 100 Found malware configuration 2->100 102 18 other signatures 2->102 10 file.exe 25 2->10         started        14 svchost.exe 2->14         started        signatures3 process4 dnsIp5 72 d235izp073r941.cloudfront.net 13.226.251.177, 443, 49730 AMAZON-02US United States 10->72 48 C:\Users\user\AppData\Local\...\INetC.dll, PE32 10->48 dropped 50 C:\Users\user\AppData\Local\Temp\...\est.bat, DOS 10->50 dropped 52 C:\Users\user\AppData\Local\...\load[1].bat, DOS 10->52 dropped 17 cmd.exe 1 1 10->17         started        74 iolo0.b-cdn.net 143.244.50.209 COGENT-174US United States 14->74 76 127.0.0.1 unknown unknown 14->76 54 SystemMechanic_548...38868BD1.exe (copy), PE32 14->54 dropped 56 C:\Users\user\AppData\Local\...\BITC06F.tmp, PE32 14->56 dropped 120 Benign windows process drops PE files 14->120 file6 signatures7 process8 signatures9 92 Suspicious powershell command line found 17->92 94 Tries to download and execute files (via powershell) 17->94 20 i1.exe 1 3 17->20         started        25 powershell.exe 15 16 17->25         started        27 powershell.exe 16 17->27         started        29 2 other processes 17->29 process10 dnsIp11 64 185.172.128.90, 49740, 80 NADYMSS-ASRU Russian Federation 20->64 66 185.172.128.228, 49741, 49743, 80 NADYMSS-ASRU Russian Federation 20->66 42 C:\Users\user\AppData\Local\Temp\u5fg.1.exe, PE32 20->42 dropped 44 C:\Users\user\AppData\Local\Temp\u5fg.0.exe, PE32 20->44 dropped 104 Multi AV Scanner detection for dropped file 20->104 106 Detected unpacking (changes PE section rights) 20->106 108 Detected unpacking (overwrites its own PE header) 20->108 110 Machine Learning detection for dropped file 20->110 31 u5fg.0.exe 12 20->31         started        35 u5fg.1.exe 8 8 20->35         started        37 WerFault.exe 21 16 20->37         started        68 d2iv78ooxaijb6.cloudfront.net 52.85.205.114, 443, 49731, 49732 AMAZON-02US United States 25->68 112 Powershell drops PE file 25->112 70 185.172.128.59, 49733, 49742, 80 NADYMSS-ASRU Russian Federation 27->70 46 C:\Users\user\AppData\Local\Temp\i1.exe, PE32 27->46 dropped file12 signatures13 process14 dnsIp15 78 185.172.128.150 NADYMSS-ASRU Russian Federation 31->78 82 Multi AV Scanner detection for dropped file 31->82 84 Detected unpacking (changes PE section rights) 31->84 86 Detected unpacking (overwrites its own PE header) 31->86 90 3 other signatures 31->90 80 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 35->80 88 Checks if the current machine is a virtual machine (disk enumeration) 35->88 39 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 35->39         started        signatures16 process17 signatures18 114 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 39->114 116 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 39->116 118 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 39->118
Score:
85%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2024-05-09 15:43:05 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hnz5bnahkkxudtnkhf6ip4bzcz7quhe77dvgmi74rkgljstypstq._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:stealc family:zgrat discovery execution rat stealer
Link:
https://tria.ge/reports/240509-s5w2mshe5v/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Enumerates physical storage devices
Program crash
Checks installed software on the system
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Detect ZGRat V1
Stealc
ZGRat
Malware Config
C2 Extraction:
http://185.172.128.150
Dropper Extraction:
https://d2iv78ooxaijb6.cloudfront.net/load/th.php?a=2836&c=1000
https://d2iv78ooxaijb6.cloudfront.net/load/dl.php?id=425&c=1000
https://d2iv78ooxaijb6.cloudfront.net/load/dl.php?id=444&c=1000
Unpacked files
SH256 hash:
85e03805f90f72257dd41bfdaa186237218bbb0ec410ad3b6576a88ea11dccb9
MD5 hash:
40d7eca32b2f4d29db98715dd45bfac5
SHA1 hash:
124df3f617f562e46095776454e1c0c7bb791cc7
Link:
https://www.unpac.me/results/f6af5d09-d1c9-43c6-8971-c831930e9958/
SH256 hash:
3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7
MD5 hash:
213c0265511727869c959abd24ea3677
SHA1 hash:
22ea6fe23eeb57d0048d1b0e2a826dd66c6969d9
Link:
https://www.unpac.me/results/f6af5d09-d1c9-43c6-8971-c831930e9958/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3b73d0b40752/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/3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7

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:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers

File information

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

Web download

GCleaner

Executable exe 3b73d0b40752af41cdaa397c87f039167f0a1c9ff8ea6623fc8a8cb4ca787ca7

(this sample)

  
Dropped by
Privateloader
  
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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

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