MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06. 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: 17


Intelligence 17 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06
SHA3-384 hash: f0e18a872b8b9595b06d1921b7910d8c62f0978d0f28a1123b572a1bb60298d8964d3954d540866c26598c1333b7dfcd
SHA1 hash: c13cd57da269a9c84f63787c87a2e503bb154ac7
MD5 hash: 3b1bf937711e0b1f3b6e455d535cc4f0
humanhash: vegan-salami-lamp-princess
File name:3b1bf937711e0b1f3b6e455d535cc4f0.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:5'100'767 bytes
First seen:2025-01-10 14:09:30 UTC
Last seen:2025-01-10 14:09:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b1c5b1beabd90d9fdabd1df0779ea832 (11 x CoinMiner, 10 x QuasarRAT, 8 x AsyncRAT)
ssdeep 98304:j3GvI7nzlAi52DH1Emy/+hpC7FBV0CCqXqoOONza/IIA2ZeN9zE1m7:j3GvuSiIDHbM+G7Ff0s5NoIIA2M9w1w
TLSH T1CE362319E2F508F8F0B7B5799AA64915EB777C4E0370864F23BD411A1FA37918E39322
TrID 76.9% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
16.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
3.0% (.EXE) Win64 Executable (generic) (10522/11/4)
1.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
0.5% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
File icon (PE):PE icon
dhash icon 9494b494d4aeaeac (832 x DCRat, 172 x RedLineStealer, 134 x CryptOne)
Reporter abuse_ch
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
209
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
3b1bf937711e0b1f3b6e455d535cc4f0.exe
Verdict:
Malicious activity
Analysis date:
2025-01-10 16:25:54 UTC
Tags:
miner quasar
Link:
https://app.any.run/tasks/8fe0c65c-978d-4aef-b0ed-c5c7c258e87a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67812a581e9cdec7dbbb70fb
Tags:
autorun quasar cobalt
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Connection attempt
Setting a keyboard event handler
Running batch commands
Deleting a system file
Creating a service
Launching a service
Creating a file in the Windows subdirectories
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Using the Windows Management Instrumentation requests
Setting browser functions hooks
Unauthorized injection to a recently created process
Enabling autorun for a service
Enabling autorun by creating a file
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint microsoft_visual_cc overlay packed packer_detected
Link:
https://www.filescan.io/uploads/67812a4c0e6ff2c757032739/reports/59149bd4-b559-445e-9073-39a0eacf3b49/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06
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/aa989b5a-7d24-4a2f-bdaf-9dae9a6b4611
Result
Threat name:
Quasar, R77 RootKit
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1589046
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Found direct / indirect Syscall (likely to bypass EDR)
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Installs a global keyboard hook
Loading BitLocker PowerShell Module
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies power options to not sleep / hibernate
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Disable power options
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Stop multiple services
Stops critical windows services
Suspicious powershell command line found
Uses cmd line tools excessively to alter registry or file data
Uses powercfg.exe to modify the power settings
Uses Register-ScheduledTask to add task schedules
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected Quasar RAT
Yara detected R77 RootKit
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1589046 Sample: o1EZRRnlY3.exe Startdate: 11/01/2025 Architecture: WINDOWS Score: 100 107 Found malware configuration 2->107 109 Malicious sample detected (through community Yara rule) 2->109 111 Antivirus detection for dropped file 2->111 113 13 other signatures 2->113 9 o1EZRRnlY3.exe 8 2->9         started        12 MLjvrefsd5vf1.exe 2->12         started        process3 file4 67 C:\Users\user\Desktop\lgigivedpdvfs.exe, PE32+ 9->67 dropped 69 C:\Users\user\Desktop\Tbcelsmfm.exe, PE32+ 9->69 dropped 71 C:\Users\user\Desktop\MLjvrefsd5vf1.exe, PE32 9->71 dropped 15 Tbcelsmfm.exe 1 2 9->15         started        19 lgigivedpdvfs.exe 4 9->19         started        21 MLjvrefsd5vf1.exe 5 9->21         started        141 Hides that the sample has been downloaded from the Internet (zone.identifier) 12->141 23 Client.exe 12->23         started        25 schtasks.exe 12->25         started        signatures5 process6 file7 73 C:\ProgramData\mxergolzfguk\kaptsegthwf.exe, PE32+ 15->73 dropped 83 Multi AV Scanner detection for dropped file 15->83 85 Modifies the context of a thread in another process (thread injection) 15->85 87 Adds a directory exclusion to Windows Defender 15->87 89 Modifies power options to not sleep / hibernate 15->89 27 dialer.exe 15->27         started        30 cmd.exe 15->30         started        43 11 other processes 15->43 75 C:\Users\user\AppData\Local\Temp\67AF.tmp, PE32+ 19->75 dropped 77 C:\Program Files\Cuis\bon\Bara.exe, PE32+ 19->77 dropped 91 Antivirus detection for dropped file 19->91 93 Suspicious powershell command line found 19->93 95 Machine Learning detection for dropped file 19->95 105 4 other signatures 19->105 32 cmd.exe 19->32         started        45 3 other processes 19->45 79 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 21->79 dropped 97 Uses schtasks.exe or at.exe to add and modify task schedules 21->97 99 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->99 34 Client.exe 2 21->34         started        37 schtasks.exe 1 21->37         started        101 Installs a global keyboard hook 23->101 103 Found direct / indirect Syscall (likely to bypass EDR) 23->103 39 schtasks.exe 23->39         started        41 conhost.exe 25->41         started        signatures8 process9 dnsIp10 115 Injects code into the Windows Explorer (explorer.exe) 27->115 117 Contains functionality to inject code into remote processes 27->117 119 Writes to foreign memory regions 27->119 137 4 other signatures 27->137 47 Conhost.exe 27->47         started        121 Uses cmd line tools excessively to alter registry or file data 30->121 123 Uses powercfg.exe to modify the power settings 30->123 125 Stops critical windows services 30->125 57 2 other processes 30->57 59 10 other processes 32->59 81 185.148.3.216, 4000, 49716, 49791 MAGNA-CAPAXFI Finland 34->81 127 Antivirus detection for dropped file 34->127 129 Multi AV Scanner detection for dropped file 34->129 131 Machine Learning detection for dropped file 34->131 139 2 other signatures 34->139 49 schtasks.exe 34->49         started        51 conhost.exe 37->51         started        53 conhost.exe 39->53         started        55 conhost.exe 43->55         started        61 10 other processes 43->61 133 Loading BitLocker PowerShell Module 45->133 135 Modifies power options to not sleep / hibernate 45->135 63 7 other processes 45->63 signatures11 process12 process13 65 conhost.exe 49->65         started       
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06/
Threat name:
Win64.Trojan.Reflo
Create hunting rule
Status:
Malicious
First seen:
2025-01-01 12:23:08 UTC
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mr73sxspxzg2vl7v3wa6nhbm56gbfwhvu334sxmi6z66olsufmda._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:4drun defense_evasion discovery evasion execution persistence spyware trojan
Link:
https://tria.ge/reports/250110-rgrxcaylgk/
Behaviour
Detects videocard installed
Modifies data under HKEY_USERS
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Launches sc.exe
Drops file in System32 directory
Suspicious use of SetThreadContext
Power Settings
Checks computer location settings
Executes dropped EXE
Indicator Removal: Clear Windows Event Logs
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Creates new service(s)
Stops running service(s)
Modifies security service
Quasar RAT
Quasar family
Quasar payload
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
185.148.3.216:4000
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/095cbe60-b38a-47c1-b1c1-fcf300b398ca
Unpacked files
SH256 hash:
a92133787af66e6d68a301ef087e4116f5cab3f538d8ec5e5e0eb95cecc68ea8
MD5 hash:
952f360a4651f948be3a673178631641
SHA1 hash:
60e58b89cfce587aa121baf431d55cbbecd21545
Link:
https://www.unpac.me/results/256fb269-cab6-433a-a3de-37e96985cbe5/
SH256 hash:
19fd26fa3f76141cc05ef0c0c96ea91dcf900e760b57195f216a113b1cf69100
MD5 hash:
ea001f076677c9b0dd774ae670efdf63
SHA1 hash:
37a4466f3c38b60a30fc1073b9d0b2d2d0e692e5
Detections:
QuasarRAT
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
Vermin_Keylogger_Jan18_1
Create hunting rule
win_quasarrat_j2
Create hunting rule
win_quasar_rat_client
Create hunting rule
INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_QuasarStealer
Create hunting rule
Link:
https://www.unpac.me/results/256fb269-cab6-433a-a3de-37e96985cbe5/
Parent samples :
210673b54f64ba4504b4ffb778b245261ba47ba659bfe14cd66290bf9c0f64ba
647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06
6af6769000ad2f44a4396ebbbf81fe1b34c3ad17f0a68251cd9784ce12f9cd8f
b1336c80bc2ba177ffcf3000f209bfb72f6e858e17976427e2155578f06e7d17
4cd3f60d9bff903a56afc5e1c6c06c73f293af40c60c06453f55f4160d1635ca
SH256 hash:
647fb95e4fbe4daaaff5dd81e69c2cef8c12d8f5a6f7c95d88f67de72e542b06
MD5 hash:
3b1bf937711e0b1f3b6e455d535cc4f0
SHA1 hash:
c13cd57da269a9c84f63787c87a2e503bb154ac7
Link:
https://www.unpac.me/results/256fb269-cab6-433a-a3de-37e96985cbe5/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/647fb95e4fbe/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: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:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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 (FORCE_INTEGRITY)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
GDI_PLUS_APIInterfaces with Graphicsgdiplus.dll::GdiplusStartup
gdiplus.dll::GdiplusShutdown
gdiplus.dll::GdipAlloc
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::AttachConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileMappingW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW

Comments