MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a7d8154bb436ed2e91516ab13e82aaee5f76e9af2d16d6ce62758aa3c17f0b3e. 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: 13
| SHA256 hash: | a7d8154bb436ed2e91516ab13e82aaee5f76e9af2d16d6ce62758aa3c17f0b3e |
|---|---|
| SHA3-384 hash: | 0fdd957ecd5d61317106b7f223b6f9f8d5f78501f7ed088edb20fdb172f822a9b53c8bbd20c6abe53c53def50f59ad91 |
| SHA1 hash: | 3f6e78c1d0789bc1c194f569eaabd92e6699496e |
| MD5 hash: | 4db130891e3112bdcb25aae206c8d324 |
| humanhash: | hydrogen-twenty-four-quebec |
| File name: | 4db130891e3112bdcb25aae206c8d324.exe |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 556'544 bytes |
| First seen: | 2021-08-17 13:28:18 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 6144:0uPIHzXADn3gObC/yAkdu8f7HJpUUdUbB1tdAsWLfMcN5hdK:0xynHdp5ytqJf3N9K |
| Threatray | 101 similar samples on MalwareBazaar |
| TLSH | T142C449122BE8CA1BE1BE6771E4B004249BF5F116B666D78F1A8461F91C63B41ED013BF |
| Reporter |  abuse_ch |
| Tags: | exe QuasarRAT RAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
106
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
TrustedInstaller.exe
Verdict:
Malicious activity
Analysis date:
2021-08-11 09:30:25 UTC
Tags:
evasion trojan rat quasar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Deleting a recently created file
Creating a file in the %AppData% subdirectories
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the Windows subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Replacing files
Sending a UDP request
Setting a keyboard event handler
Sending a custom TCP request
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Enabling autorun by creating a file
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:
Quasar RAT
Verdict:
Malicious
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Drops executables to the windows directory (C:\Windows) and starts them
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Quasar
Status:
Malicious
First seen:
2021-08-11 20:02:44 UTC
AV detection:
34 of 47 (72.34%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 91 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar persistence spyware trojan
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in System32 directory
Adds Run key to start application
Looks up external IP address via web service
Loads dropped DLL
Executes dropped EXE
Quasar RAT
Unpacked files
SH256 hash:
a7d8154bb436ed2e91516ab13e82aaee5f76e9af2d16d6ce62758aa3c17f0b3e
MD5 hash:
4db130891e3112bdcb25aae206c8d324
SHA1 hash:
3f6e78c1d0789bc1c194f569eaabd92e6699496e
Malware family:
QuasarRAT
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: | CN_disclosed_20180208_KeyLogger_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects malware from disclosed CN malware set |
| Reference: | https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details |
| Rule name: | INDICATOR_SUSPICIOUS_GENInfoStealer |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables containing common artifcats observed in infostealers |
| Rule name: | MALWARE_Win_QuasarRAT |
|---|---|
| Author: | ditekSHen |
| Description: | QuasarRAT payload |
| Rule name: | MAL_QuasarRAT_May19_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects QuasarRAT malware |
| Reference: | https://blog.ensilo.com/uncovering-new-activity-by-apt10 |
| Rule name: | pe_imphash |
|---|
| Rule name: | pe_imphash |
|---|
| Rule name: | Quasar |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect QuasarRAT in memory |
| Rule name: | Quasar_RAT_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Quasar RAT |
| Reference: | https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Vermin_Keylogger_Jan18_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Vermin Keylogger |
| Reference: | https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/ |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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