MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c. 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: 19


Intelligence 19 IOCs YARA 7 File information Comments
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SHA256 hash: 4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
SHA3-384 hash: 31df67e80b62915884dab0de06e9fd4d6cb7d3b728f9b89c12c671b4cc66f54d9979f2645a26ba627fd807283a9eeec3
SHA1 hash: a3cb462f5954035ca68bc216a99eaa2455766310
MD5 hash: f263c2e28b83166ecbae7640f0096509
humanhash: fanta-beer-kansas-cardinal
File name:4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:7'231'864 bytes
First seen:2024-09-23 17:40:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c9adc83b45e363b21cd6b11b5da0501f (82 x ArkeiStealer, 60 x RecordBreaker, 46 x RedLineStealer)
ssdeep 98304:kAI+TK+yCJIyEAgweZ3BcNHVw9g6Tn/MQNB3g7ri6+Y3gFIjf3OsFyMqPPKn77KI:jtdyCJIXHxcN1HM4kY3gFIhyPX0qxm
TLSH T159762328F1E1C1F5D11779B1ED45B4FA62E4AF05CE640D8F6CE93E1078366886432EAE
TrID 94.7% (.EXE) Win32 Executable Borland Delphi 7 (664796/42/58)
2.0% (.EXE) Win32 Executable Delphi generic (14182/79/4)
1.4% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2)
0.6% (.EXE) Win32 Executable (generic) (4504/4/1)
0.2% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
File icon (PE):PE icon
dhash icon 13699696a28ad021 (3 x njrat, 1 x Amadey, 1 x NetWire)
Reporter JAMESWT_WT
Tags:desckvbrat-com-br exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
382
Origin country :
IT IT
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
Verdict:
Malicious activity
Analysis date:
2024-09-23 17:56:22 UTC
Tags:
pastebin rat asyncrat remote
Link:
https://app.any.run/tasks/321f58cc-23a9-4ece-b3ed-68ae63905b43

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.VBS.Dropper-6.UNOFFICIAL
Create hunting rule

Win.Dropper.Nanocore-9189507-1
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SecuriteInfo.com.PSW.Generic8.ISF.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66f1a8305346c7b922ad4d65
Tags:
Encryption Execution Generic Infostealer Network Static Stealth Trojan Malware Vmdetect Quasar Gumen
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Running batch commands
Creating a file
Searching for the window
Creating a window
Delayed reading of the file
Creating a file in the %temp% subdirectories
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the Program Files subdirectories
Creating a process from a recently created file
Modifying a system file
Launching a process
Creating a process with a hidden window
Searching for synchronization primitives
DNS request
Connection attempt
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Launching a file downloaded from the Internet
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
borland_delphi fingerprint installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/66f1a839800c7315e1cb00e6/reports/1ea4fbe0-2fa5-4c87-8125-7821e110227f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
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.
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bf555895-08b8-4bcd-afbe-72b571ef8320
Result
Threat name:
AsyncRAT, DcRat, Quasar, XWorm
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1516075
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Connects to many ports of the same IP (likely port scanning)
Creates autostart registry keys with suspicious values (likely registry only malware)
Creates multiple autostart registry keys
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for sample
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)
Sample uses process hollowing technique
Sample uses string decryption to hide its real strings
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Copy file to startup via Powershell
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to download and execute files (via powershell)
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected DcRat
Yara detected Generic Downloader
Yara detected Powershell download and execute
Yara detected Quasar RAT
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1516075 Sample: osmAcHNA4D.exe Startdate: 23/09/2024 Architecture: WINDOWS Score: 100 113 pastebin.com 2->113 115 paste.ee 2->115 117 6 other IPs or domains 2->117 127 Suricata IDS alerts for network traffic 2->127 129 Found malware configuration 2->129 131 Malicious sample detected (through community Yara rule) 2->131 135 24 other signatures 2->135 11 osmAcHNA4D.exe 17 19 2->11         started        14 cmd.exe 2->14         started        17 cmd.exe 2->17         started        19 4 other processes 2->19 signatures3 133 Connects to a pastebin service (likely for C&C) 115->133 process4 file5 99 C:\Program Files (x86)\...\vcruntime140_1.dll, PE32+ 11->99 dropped 101 C:\Program Files (x86)\...\vcruntime140.dll, PE32+ 11->101 dropped 103 C:\Program Files (x86)\Adobe Inc\...\jli.dll, PE32+ 11->103 dropped 105 8 other files (3 malicious) 11->105 dropped 21 wscript.exe 1 11->21         started        24 GlassPack.exe 11->24         started        27 wscript.exe 1 11->27         started        29 Set-up.exe 11->29         started        181 Suspicious powershell command line found 14->181 183 Wscript starts Powershell (via cmd or directly) 14->183 35 2 other processes 14->35 37 2 other processes 17->37 31 GlassPack.exe 19->31         started        33 GlassPack.exe 19->33         started        39 6 other processes 19->39 signatures6 process7 file8 137 Suspicious powershell command line found 21->137 139 Wscript starts Powershell (via cmd or directly) 21->139 141 Very long command line found 21->141 143 Windows Scripting host queries suspicious COM object (likely to drop second stage) 21->143 41 powershell.exe 7 21->41         started        91 C:\Users\user\Document\vcruntime140_1.dll, PE32+ 24->91 dropped 93 C:\Users\user\Document\vcruntime140.dll, PE32+ 24->93 dropped 95 C:\Users\user\Document\jli.dll, PE32+ 24->95 dropped 97 4 other malicious files 24->97 dropped 145 Creates multiple autostart registry keys 24->145 147 Writes to foreign memory regions 24->147 149 Allocates memory in foreign processes 24->149 44 CasPol.exe 24->44         started        49 2 other processes 24->49 47 powershell.exe 7 27->47         started        151 Sample uses process hollowing technique 31->151 153 Injects a PE file into a foreign processes 31->153 51 3 other processes 31->51 53 2 other processes 33->53 155 Suspicious execution chain found 35->155 55 3 other processes 35->55 57 4 other processes 37->57 59 5 other processes 39->59 signatures9 process10 dnsIp11 167 Suspicious powershell command line found 41->167 169 Tries to download and execute files (via powershell) 41->169 171 Bypasses PowerShell execution policy 41->171 179 2 other signatures 41->179 61 powershell.exe 15 16 41->61         started        65 conhost.exe 41->65         started        119 4Mekey1.myftp.biz 192.227.228.34, 4782, 49753, 49754 AS-COLOCROSSINGUS United States 44->119 121 ipwho.is 195.201.57.90, 443, 49756 HETZNER-ASDE Germany 44->121 173 Hides that the sample has been downloaded from the Internet (zone.identifier) 44->173 175 Installs a global keyboard hook 44->175 67 powershell.exe 17 47->67         started        69 conhost.exe 47->69         started        177 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 49->177 signatures12 process13 dnsIp14 123 desckvbrat.com.br 191.252.83.213, 21, 49735, 49736 LocawebServicosdeInternetSABR Brazil 61->123 125 paste.ee 188.114.96.3, 443, 49739, 49740 CLOUDFLARENETUS European Union 61->125 107 C:\Users\user\AppData\Local\...\ixtul.ps1, Unicode 61->107 dropped 71 powershell.exe 61->71         started        74 powershell.exe 61->74         started        76 cmd.exe 10 61->76         started        78 cmd.exe 61->78         started        109 C:\Users\user\AppData\Local\...\atadr.ps1, Unicode 67->109 dropped 80 powershell.exe 67->80         started        83 powershell.exe 1 11 67->83         started        85 cmd.exe 67->85         started        file15 process16 dnsIp17 87 RegAsm.exe 71->87         started        111 pastebin.com 104.20.3.235, 443, 49751, 49752 CLOUDFLARENETUS United States 80->111 157 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 80->157 159 Writes to foreign memory regions 80->159 161 Injects a PE file into a foreign processes 80->161 89 RegAsm.exe 80->89         started        163 Creates autostart registry keys with suspicious values (likely registry only malware) 83->163 165 Creates multiple autostart registry keys 83->165 signatures18 process19
Score:
42%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
Detection:
dcrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c/
Threat name:
Win32.Backdoor.Asyncrat
Create hunting rule
Status:
Malicious
First seen:
2024-08-30 22:02:04 UTC
File Type:
PE (Exe)
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jl3cctfqkxsje7w2yxkcioohpqwhgle2kgyyx3iurwsvxuoshb6a._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:quasar family:xworm botnet:07pjo24 botnet:biig2 defense_evasion discovery execution persistence rat spyware trojan
Link:
https://tria.ge/reports/240923-v9fassydlb/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks installed software on the system
Command and Scripting Interpreter: PowerShell
Indicator Removal: File Deletion
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
AsyncRat
Detect Xworm Payload
Quasar RAT
Quasar payload
Xworm
Malware Config
C2 Extraction:
4mekey1.myftp.biz:4782
4mekey1.myftp.biz:8848
4Mekey1.myftp.biz:7000
Dropper Extraction:
https://drive.google.com/uc?export=download&id=
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e4e40d87-9c81-4703-abdc-38d0d7e09cec
Unpacked files
SH256 hash:
fa7c68a5879015fccbf455ceb62ca2da704219f8129bb9ebf36cdfe4d3419b44
MD5 hash:
1620bc6ba7bb1d7eb96ce0a0d7163cea
SHA1 hash:
5ad5012498b57308de88325bb3832793117932de
Link:
https://www.unpac.me/results/571a86cb-260c-4322-a948-cb13d20b6cc3/
SH256 hash:
4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c
MD5 hash:
f263c2e28b83166ecbae7640f0096509
SHA1 hash:
a3cb462f5954035ca68bc216a99eaa2455766310
Link:
https://www.unpac.me/results/571a86cb-260c-4322-a948-cb13d20b6cc3/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4af6214cb055/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4af6214cb055e4927edac5d42439c77c2c732c9a51b18bed148da55bd1d2387c

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:BobSoftMiniDelphiBoBBobSoft
Create hunting rule
Author:malware-lu
Rule name:Borland
Create hunting rule
Author:malware-lu
Rule name:Detect_Malicious_VBScript_Base64
Create hunting rule
Author:daniyyell
Description:Detects malicious VBScript patterns, including Base64 decoding, file operations, and PowerShell.
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

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_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User Authorizationadvapi32.dll::AllocateAndInitializeSid
advapi32.dll::EqualSid
advapi32.dll::FreeSid
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
MULTIMEDIA_APICan Play Multimediagdi32.dll::StretchDIBits
winmm.dll::timeKillEvent
winmm.dll::timeSetEvent
SECURITY_BASE_APIUses Security Base APIadvapi32.dll::AdjustTokenPrivileges
advapi32.dll::GetTokenInformation
SHELL_APIManipulates System Shellshell32.dll::ShellExecuteExA
shell32.dll::ShellExecuteA
shell32.dll::SHGetFileInfoA
WIN32_PROCESS_APICan Create Process and Threadsadvapi32.dll::OpenProcessToken
kernel32.dll::OpenProcess
advapi32.dll::OpenThreadToken
kernel32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIkernel32.dll::TerminateProcess
kernel32.dll::LoadLibraryA
kernel32.dll::GetStartupInfoA
kernel32.dll::GetDiskFreeSpaceA
kernel32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WinExec
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateDirectoryA
kernel32.dll::CreateFileA
kernel32.dll::DeleteFileA
kernel32.dll::GetWindowsDirectoryA
kernel32.dll::GetSystemDirectoryA
kernel32.dll::GetFileAttributesA
WIN_BASE_USER_APIRetrieves Account Informationkernel32.dll::GetComputerNameA
advapi32.dll::GetUserNameA
advapi32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegCreateKeyExA
advapi32.dll::RegOpenKeyExA
advapi32.dll::RegQueryInfoKeyA
advapi32.dll::RegQueryValueExA
advapi32.dll::RegSetValueExA
WIN_USER_APIPerforms GUI Actionsuser32.dll::FindWindowA
user32.dll::PeekMessageA
user32.dll::CreateWindowExA

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