MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6af6769000ad2f44a4396ebbbf81fe1b34c3ad17f0a68251cd9784ce12f9cd8f. 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: 20


Intelligence 20 IOCs YARA 38 File information Comments

SHA256 hash: 6af6769000ad2f44a4396ebbbf81fe1b34c3ad17f0a68251cd9784ce12f9cd8f
SHA3-384 hash: c0f803d8498a803aa252a7d232bc649a11b551b28dd86ef7249215d88309074353d5e703673ae26dc060e7b3134c35d7
SHA1 hash: 019d21240e9aece2aff83e65e5f2e6f6c0c9d928
MD5 hash: e3b7331b47a0d66a56fc6938038a56a5
humanhash: romeo-moon-six-river
File name:e3b7331b47a0d66a56fc6938038a56a5.exe
Download: download sample
Signature QuasarRAT
File size:5'122'533 bytes
First seen:2025-02-18 06:29:26 UTC
Last seen:2025-02-21 09:33:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b1c5b1beabd90d9fdabd1df0779ea832 (11 x CoinMiner, 10 x QuasarRAT, 8 x AsyncRAT)
ssdeep 98304:j3GNEx/8TWaSaBVgvtZRLKds0oEIWKi7t2kY2+cYLqHF0CgVJ5MSCN+ohw9oj:j3G0xasRLKds1lniReEaI/gVJxCcohwY
Threatray 373 similar samples on MalwareBazaar
TLSH T1E136230AE3E808F8E5F3E67889664542E7B73C9A16759B8F136D011B1F67350DD3A322
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 RAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
449
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
e3b7331b47a0d66a56fc6938038a56a5.exe
Verdict:
Malicious activity
Analysis date:
2025-02-18 06:33:35 UTC
Tags:
miner quasar

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
infosteal 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
Deleting a system file
Running batch commands
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm fingerprint microsoft_visual_cc obfuscated overlay packed packer_detected
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.
Result
Threat name:
Quasar, R77 RootKit
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains process injector
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for dropped file
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)
Detected unpacking (creates a PE file in dynamic memory)
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
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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
Protects its processes via BreakOnTermination flag
Sample is not signed and drops a device driver
Sample uses string decryption to hide its real strings
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 EventLog
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 Quasar RAT
Yara detected R77 RootKit
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1617687 Sample: skfhDesqSt.exe Startdate: 18/02/2025 Architecture: WINDOWS Score: 100 115 Found malware configuration 2->115 117 Malicious sample detected (through community Yara rule) 2->117 119 Antivirus detection for dropped file 2->119 121 14 other signatures 2->121 10 skfhDesqSt.exe 8 2->10         started        13 qrayeifogvv.exe 2->13         started        process3 file4 87 C:\Users\user\Desktop\qrayeifogvv.exe, PE32 10->87 dropped 89 C:\Users\user\Desktop\pfemflivs.exe, PE32+ 10->89 dropped 91 C:\Users\user\Desktop\Ihfenc586grt.exe, PE32+ 10->91 dropped 16 Ihfenc586grt.exe 1 2 10->16         started        20 pfemflivs.exe 4 10->20         started        22 qrayeifogvv.exe 5 10->22         started        159 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->159 161 Found direct / indirect Syscall (likely to bypass EDR) 13->161 signatures5 process6 file7 77 C:\ProgramData\mxergolzfguk\kaptsegthwf.exe, PE32+ 16->77 dropped 95 Multi AV Scanner detection for dropped file 16->95 97 Modifies the context of a thread in another process (thread injection) 16->97 99 Adds a directory exclusion to Windows Defender 16->99 101 Modifies power options to not sleep / hibernate 16->101 24 dialer.exe 16->24         started        27 cmd.exe 16->27         started        29 powershell.exe 23 16->29         started        40 13 other processes 16->40 79 C:\Users\user\AppData\Local\Temp\D37.tmp, PE32+ 20->79 dropped 81 C:\Program Files\Cuis\bon\Bara.exe, PE32+ 20->81 dropped 103 Antivirus detection for dropped file 20->103 105 Detected unpacking (creates a PE file in dynamic memory) 20->105 107 Suspicious powershell command line found 20->107 113 5 other signatures 20->113 31 cmd.exe 20->31         started        33 cmd.exe 20->33         started        42 2 other processes 20->42 83 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 22->83 dropped 109 Uses schtasks.exe or at.exe to add and modify task schedules 22->109 111 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->111 35 Client.exe 2 22->35         started        38 schtasks.exe 1 22->38         started        signatures8 process9 dnsIp10 133 Injects code into the Windows Explorer (explorer.exe) 24->133 135 Contains functionality to inject code into remote processes 24->135 137 Writes to foreign memory regions 24->137 155 4 other signatures 24->155 52 2 other processes 24->52 139 Uses cmd line tools excessively to alter registry or file data 27->139 141 Uses powercfg.exe to modify the power settings 27->141 143 Stops critical windows services 27->143 56 2 other processes 27->56 145 Loading BitLocker PowerShell Module 29->145 44 conhost.exe 29->44         started        58 10 other processes 31->58 147 Modifies power options to not sleep / hibernate 33->147 60 5 other processes 33->60 93 185.148.3.216, 4000, 49726, 49758 MAGNA-CAPAXFI Finland 35->93 149 Antivirus detection for dropped file 35->149 151 Multi AV Scanner detection for dropped file 35->151 153 Hides that the sample has been downloaded from the Internet (zone.identifier) 35->153 157 2 other signatures 35->157 46 schtasks.exe 35->46         started        48 conhost.exe 38->48         started        62 12 other processes 40->62 50 conhost.exe 42->50         started        signatures11 process12 file13 64 conhost.exe 46->64         started        66 WmiPrvSE.exe 46->66         started        68 conhost.exe 46->68         started        85 C:\Windows\Temp\dsarrsulkovb.sys, PE32+ 52->85 dropped 123 Multi AV Scanner detection for dropped file 52->123 125 Protects its processes via BreakOnTermination flag 52->125 127 Modifies the context of a thread in another process (thread injection) 52->127 129 2 other signatures 52->129 70 powershell.exe 52->70         started        73 conhost.exe 58->73         started        signatures14 process15 signatures16 131 Loading BitLocker PowerShell Module 70->131 75 conhost.exe 70->75         started        process17
Threat name:
Win64.Trojan.Vigorf
Status:
Malicious
First seen:
2025-02-13 00:24:17 UTC
File Type:
PE+ (Exe)
Extracted files:
17
AV detection:
23 of 37 (62.16%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:quasar botnet:4drun defense_evasion discovery execution persistence spyware trojan
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
Loads dropped DLL
Command and Scripting Interpreter: PowerShell
Creates new service(s)
Sets service image path in registry
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
Unpacked files
SH256 hash:
6af6769000ad2f44a4396ebbbf81fe1b34c3ad17f0a68251cd9784ce12f9cd8f
MD5 hash:
e3b7331b47a0d66a56fc6938038a56a5
SHA1 hash:
019d21240e9aece2aff83e65e5f2e6f6c0c9d928
SH256 hash:
19fd26fa3f76141cc05ef0c0c96ea91dcf900e760b57195f216a113b1cf69100
MD5 hash:
ea001f076677c9b0dd774ae670efdf63
SHA1 hash:
37a4466f3c38b60a30fc1073b9d0b2d2d0e692e5
Detections:
QuasarRAT cn_utf8_windows_terminal malware_windows_xrat_quasarrat MAL_QuasarRAT_May19_1 Vermin_Keylogger_Jan18_1 win_quasarrat_j2 win_quasar_rat_client INDICATOR_SUSPICIOUS_GENInfoStealer INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA MALWARE_Win_QuasarStealer
SH256 hash:
a92133787af66e6d68a301ef087e4116f5cab3f538d8ec5e5e0eb95cecc68ea8
MD5 hash:
952f360a4651f948be3a673178631641
SHA1 hash:
60e58b89cfce587aa121baf431d55cbbecd21545
Malware family:
QuasarRAT
Verdict:
Malicious
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:AutoIT_Compiled
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:cobalt_strike_tmp01925d3f
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:DebuggerCheck__QueryInfo
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PowerShell_Obfuscation
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Detect_Remcos_RAT
Author:daniyyell
Description:Detects Remcos RAT payloads and commands
Rule name:golang_bin_JCorn_CSC846
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
Author:ditekSHen
Description:Detects executables containing common artifacts observed in infostealers
Rule name:Lumma_Stealer_Detection
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
Rule name:MALWARE_Win_QuasarStealer
Author:ditekshen
Description:Detects Quasar infostealer
Rule name:MALWARE_Win_R77
Author:ditekSHen
Description:Detects r77 rootkit
Rule name:MAL_QuasarRAT_May19_1
Author:Florian Roth (Nextron Systems)
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Rule name:PE_Digital_Certificate
Author:albertzsigovits
Rule name:pe_imphash
Rule name:quasarrat
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Author:jeFF0Falltrades
Rule name:RANSOMWARE
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
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:ThreadControl__Context
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Vermin_Keylogger_Jan18_1
Author:Florian Roth (Nextron Systems)
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:Windows_Rootkit_R77_5bab748b
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit
Rule name:Windows_Rootkit_R77_d0367e28
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit
Rule name:win_quasar_rat_client
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.

File information


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

Web download

QuasarRAT

Executable exe 6af6769000ad2f44a4396ebbbf81fe1b34c3ad17f0a68251cd9784ce12f9cd8f

(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_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