MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 266aa1bf199f3bd82bc8e708c177aeef4808e31c439f87d69b68efb8e07da996. 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: 9
| SHA256 hash: | 266aa1bf199f3bd82bc8e708c177aeef4808e31c439f87d69b68efb8e07da996 |
|---|---|
| SHA3-384 hash: | 94acc80fc6ce47e1f76b7ab96a2f299393e72e424548d314e5ee942e8f017a68921771eddfde3917a2e98fd58a13ccc8 |
| SHA1 hash: | 713cb9730056a6e0dcf1237c5bbc63ef38cfc308 |
| MD5 hash: | b85b35b1236f1931f9b1fa47425e796e |
| humanhash: | earth-xray-delta-apart |
| File name: | b85b35b1236f1931f9b1fa47425e796e.exe |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 20'971'520 bytes |
| First seen: | 2023-01-11 04:40:19 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 196608:+k/QutOxtP8yr6oKo/hYNiJId8OEoWz8w7O79T6jRBJ06e8anYq5VYvoLnu493xp:x6PI1o/GN068OTiT7FRU6gbVbnz3vM |
| Threatray | 3'813 similar samples on MalwareBazaar |
| TLSH | T17A276B2CE52C8699F8119CF83906E4D2590F82F6C7CED3718D179A2523DC5FC4AEEA49 |
| TrID | 30.2% (.EXE) Win64 Executable (generic) (10523/12/4) 18.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 14.5% (.EXE) Win16 NE executable (generic) (5038/12/1) 12.9% (.EXE) Win32 Executable (generic) (4505/5/1) 5.9% (.ICL) Windows Icons Library (generic) (2059/9) |
| Reporter |  abuse_ch |
| Tags: | exe QuasarRAT RAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
243
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b85b35b1236f1931f9b1fa47425e796e.exe
Verdict:
No threats detected
Analysis date:
2023-01-11 04:40:44 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Enabling the 'hidden' option for analyzed file
Using the Windows Management Instrumentation requests
Launching a process
Creating a file in the Windows directory
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file in the %temp% directory
Creating a window
Searching for synchronization primitives
Сreating synchronization primitives
Creating a file
Sending a custom TCP request
Forced system process termination
Setting a keyboard event handler
DNS request
Sending an HTTP GET request
Query of malicious DNS domain
Unauthorized injection to a system process
Enabling autorun by creating a file
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
overlay
Result
Verdict:
MALICIOUS
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Bypasses PowerShell execution policy
Creates a thread in another existing process (thread injection)
Drops executables to the windows directory (C:\Windows) and starts them
Injects a PE file into a foreign processes
Machine Learning detection for sample
May check the online IP address of the machine
Modifies the context of a thread in another process (thread injection)
Multi AV Scanner detection for submitted file
Powershell drops PE file
Renames powershell.exe to bypass HIPS
Snort IDS alert for network traffic
Suspicious powershell command line found
Very long command line found
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Gathering data
Threat name:
Win32.Trojan.CrypterX
Status:
Malicious
First seen:
2023-01-07 21:46:54 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 41 (53.66%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
asyncrat
Similar samples:
+ 3'803 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
10/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Executes dropped EXE
Suspicious use of NtCreateUserProcessOtherParentProcess
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Quasar
Score:
0.90
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). |
| Rule name: | cobalt_strike_tmp01925d3f |
|---|---|
| Author: | The DFIR Report |
| Description: | files - file ~tmp01925d3f.exe |
| Reference: | https://thedfirreport.com |
| Rule name: | pdb_YARAify |
|---|---|
| Author: | @wowabiy314 |
| Description: | PDB |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
No further information available
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