MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 bbfb1b5542f73bfd598e587ccab52da52ff59ff120708900a0a15484deaa18fa. 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: 16
| SHA256 hash: | bbfb1b5542f73bfd598e587ccab52da52ff59ff120708900a0a15484deaa18fa |
|---|---|
| SHA3-384 hash: | 7722fd1c4aa796bb26e0a27f5d61f5d2c08b0ac18e4f753efe3706fe52ec08381b6e40cbd2f7a049e67b51c87c3a9a78 |
| SHA1 hash: | 31f2781d576ccff91f32952f3a93a3ea001831b1 |
| MD5 hash: | 3afb38bfad87cb9e00d81d90dd467cd9 |
| humanhash: | louisiana-alpha-july-five |
| File name: | bbfb1b5542f73bfd598e587ccab52da52ff59ff120708900a0a15484deaa18fa |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 862'720 bytes |
| First seen: | 2026-06-08 08:31:21 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'067 x AgentTesla, 20'020 x Formbook, 12'352 x SnakeKeylogger) |
| ssdeep | 24576:m+1SHvhthpBqs/F/uwn+cshmk8/upcUjI:xchp0i9n+uGy |
| Threatray | 809 similar samples on MalwareBazaar |
| TLSH | T19B050289A7C08E35D90A5D34C4301E7842379F0A7E55F285EE28BD7337B3ADB189199B |
| TrID | 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.2% (.EXE) Win64 Executable (generic) (6522/11/2) 4.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| dhash icon | 70c0db4eea7ab0fc (24 x QuasarRAT) |
| Reporter |  adrian__luca |
| Tags: | exe QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
69
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
ConfuserEx
Details
Detection:
n/a
Verdict:
Malicious
Score:
99.1%
Tags:
quasar virus remo msil
Result
Verdict:
Malware
Maliciousness:
Behaviour
Сreating synchronization primitives
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Creating a window
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Query of malicious DNS domain
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
base64 dotfuscator obfuscated obfuscated packed reconnaissance smartassembly vbnet yano
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-21T12:37:00Z UTC
Last seen:
2026-06-09T20:20:00Z UTC
Hits:
~1000
Verdict:
Suspicious
Score:
100%
Verdict:
Malware
File Type:
PE
Gathering data
Detection:
quasar
Threat name:
Win32.Trojan.Kepavll
Status:
Malicious
First seen:
2026-05-21 16:47:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
26 of 36 (72.22%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
+ 799 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar botnet:toy5 discovery execution persistence spyware trojan
Behaviour
Runs ping.exe
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Internet Connection Discovery
SmartAssembly .NET packer
Suspicious use of SetThreadContext
Looks up external IP address via web service
Executes dropped EXE
Checks computer location settings
Family: Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
qinerdime.ydns.eu:61542
qinerdime.servehalflife.com:61541
qinerdime.servehalflife.com:61541
Unpacked files
SH256 hash:
bbfb1b5542f73bfd598e587ccab52da52ff59ff120708900a0a15484deaa18fa
MD5 hash:
3afb38bfad87cb9e00d81d90dd467cd9
SHA1 hash:
31f2781d576ccff91f32952f3a93a3ea001831b1
SH256 hash:
24bb33d135b419f586194277976543b2d8b59f283177bd631d8100270d20ccf0
MD5 hash:
c82b059170135eb6a4d4f17a358605b9
SHA1 hash:
3171a330799d888ee2ff8117e035e492afb5f616
SH256 hash:
a8f576bb01bb1c6b1c2cfb0c8e39d6b3241949fa21be0097e24993e42f67c622
MD5 hash:
3ac75fcf6f65c28b7736e0aeafa4073d
SHA1 hash:
6241f84ab8c84e9dbd70c70c8af2407a2d1083e4
Detections:
QuasarRAT
Malware family:
xRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
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 |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__RemoteAPI |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | INDICATOR_EXE_Packed_Dotfuscator |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with Dotfuscator |
| Rule name: | INDICATOR_EXE_Packed_Goliath |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with Goliath |
| Rule name: | INDICATOR_EXE_Packed_SmartAssembly |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with SmartAssembly |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | VECT_Ransomware |
|---|---|
| Author: | Mustafa Bakhit |
| Description: | Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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