MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6. 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


QuasarRAT


Vendor detections: 12


Intelligence 12 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6
SHA3-384 hash: 522e7072f6ca1ea83105a245d8102750c2fa0d283f8ac8063244715b324c2f9fea69b11b40894510b8de987a3b22e763
SHA1 hash: ccb770b00596a1d2fa0d9d7d3dbe9451734a30f9
MD5 hash: af1082c667a09a0f1f6adb041ca37d34
humanhash: purple-echo-island-lactose
File name:SecuriteInfo.com.Win64.TrojanX-gen.5091.20328
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'640'736 bytes
First seen:2024-04-23 16:33:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 98304:p99xyD6/xKyfNf6wZsi/0+zqEsf+JQgWq:rXIc7fNf6Y4EsWxR
TLSH T141F533AC97A87B20E25BD837CA5052C78CEC5EED3623D9A7931509DD2FD6FDC9281480
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
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)
Reporter SecuriteInfoCom
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
321
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6.exe
Verdict:
Malicious activity
Analysis date:
2024-04-24 05:49:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b4210acc-1c18-43f6-96e7-8d341babbe00

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Creating a file
Launching a process
Creating a process from a recently created file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Blocking the User Account Control
Enabling autorun by creating a file
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/6627e3023137a4e0f3be7c5c/reports/ee6d55a7-f093-4d34-acf2-4b365e0185f2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6
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/e7b915c1-af55-45db-80b6-55345dfb6d48
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1430496
Signature
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Disables UAC (registry)
Drops PE files with benign system names
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Schedule system process
Sigma detected: Suspect Svchost Activity
Sigma detected: System File Execution Location Anomaly
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Quasar RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1430496 Sample: SecuriteInfo.com.Win64.Troj... Startdate: 23/04/2024 Architecture: WINDOWS Score: 100 84 Found malware configuration 2->84 86 Malicious sample detected (through community Yara rule) 2->86 88 Multi AV Scanner detection for submitted file 2->88 90 13 other signatures 2->90 10 SecuriteInfo.com.Win64.TrojanX-gen.5091.20328.exe 1 8 2->10         started        14 svchost.exe 1 4 2->14         started        16 svchost.exe 2->16         started        18 4 other processes 2->18 process3 file4 80 C:\Users\user\AppData\Roaming\svchost.exe, PE32+ 10->80 dropped 106 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 10->106 108 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->108 110 Drops PE files with benign system names 10->110 20 cmd.exe 1 10->20         started        22 cmd.exe 1 10->22         started        25 conhost.exe 10->25         started        112 Multi AV Scanner detection for dropped file 14->112 114 Writes to foreign memory regions 14->114 116 Adds a directory exclusion to Windows Defender 14->116 118 Disables UAC (registry) 14->118 27 CasPol.exe 14->27         started        33 7 other processes 14->33 120 Injects a PE file into a foreign processes 16->120 29 InstallUtil.exe 16->29         started        35 5 other processes 16->35 31 MSBuild.exe 18->31         started        37 8 other processes 18->37 signatures5 process6 signatures7 39 svchost.exe 4 20->39         started        54 2 other processes 20->54 92 Uses schtasks.exe or at.exe to add and modify task schedules 22->92 56 2 other processes 22->56 94 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->94 42 Client.exe 27->42         started        44 Client.exe 29->44         started        46 Client.exe 31->46         started        48 conhost.exe 33->48         started        50 conhost.exe 35->50         started        96 Loading BitLocker PowerShell Module 37->96 52 conhost.exe 37->52         started        process8 signatures9 98 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 39->98 100 Writes to foreign memory regions 39->100 102 Adds a directory exclusion to Windows Defender 39->102 104 Injects a PE file into a foreign processes 39->104 58 AddInProcess32.exe 39->58         started        62 powershell.exe 39->62         started        64 conhost.exe 39->64         started        66 WerFault.exe 39->66         started        68 conhost.exe 42->68         started        70 conhost.exe 44->70         started        72 conhost.exe 46->72         started        process10 file11 82 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 58->82 dropped 122 Hides that the sample has been downloaded from the Internet (zone.identifier) 58->122 74 Client.exe 58->74         started        124 Loading BitLocker PowerShell Module 62->124 76 conhost.exe 62->76         started        signatures12 process13 process14 78 conhost.exe 74->78         started       
Score:
54%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6/
Threat name:
ByteCode-MSIL.Trojan.Zilla
Create hunting rule
Status:
Malicious
First seen:
2024-04-23 01:19:23 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
12 of 38 (31.58%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fc36kvupzovxo3q3xmn6jbnefgnhmasa7zfryyglhttiudqmjota._file
Verdict:
malicious
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:slave evasion persistence spyware trojan
Link:
https://tria.ge/reports/240423-t24srahh82/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System policy modification
Uses Task Scheduler COM API
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Maps connected drives based on registry
Checks BIOS information in registry
Checks computer location settings
Executes dropped EXE
Windows security modification
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
Quasar RAT
Quasar payload
UAC bypass
Windows security bypass
Malware Config
C2 Extraction:
157.20.182.46:4782
Unpacked files
SH256 hash:
28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6
MD5 hash:
af1082c667a09a0f1f6adb041ca37d34
SHA1 hash:
ccb770b00596a1d2fa0d9d7d3dbe9451734a30f9
Link:
https://www.unpac.me/results/b4f7f6e2-8167-4cd6-814a-a536f855ef5a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/28b7e5568fcb/report/overview.html
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:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table

File information

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

Web download

QuasarRAT

Executable exe 28b7e5568fcbab776e1bbb1be485a4299a760240fe4b1c60cb3ce68a0e0c4ba6

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2824142/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2824191/

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

Comments