MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff. 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: 17


Intelligence 17 IOCs YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff
SHA3-384 hash: 6330d797f7f8d988a23ed6af5d41cbf660447206c107bd19c346eda8d3d912e954edbbc2344fd6595ade71910bcead48
SHA1 hash: 0a8ef5122aee73d56d914c959845886cab801a42
MD5 hash: 40258dcce3671d3a542cffce4cb874cf
humanhash: virginia-robert-music-triple
File name:Spoofer.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'266'048 bytes
First seen:2023-03-21 02:50:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 49152:bvLlL26AaNeWgPhlmVqvMQ7XSKhLL9mzhcoGdOTHHB72eh2NT:bvxL26AaNeWgPhlmVqkQ7XSKhLLX
TLSH T184E54A0477F85E62E5ABD3B2D5F0541363F0F82AF3A3EB0B5191677A1C93B4098426A7
TrID 53.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
12.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
9.5% (.SCR) Windows screen saver (13097/50/3)
7.6% (.EXE) Win64 Executable (generic) (10523/12/4)
4.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter Chainskilabs
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
341
Origin country :
US US
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
Spoofer.exe
Verdict:
Malicious activity
Analysis date:
2023-03-20 00:11:47 UTC
Tags:
quasar asyncrat
Link:
https://app.any.run/tasks/32de388b-7478-4751-88f0-5aadaaf5ec65

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/376083/
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Msilheracles-9900242-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL
Create hunting rule

Win.Packed.Downeks-6898097-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the system32 subdirectories
Launching a process
Sending a custom TCP request
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm keylogger quasarrat rat stealer
Link:
https://www.filescan.io/uploads/64191b97e91ddba083cecb1e/reports/d5bb6f8a-d2ec-4000-9160-71abcd132fdd/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d5a9690e-79ea-4add-948c-958df2076fee
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1198215
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
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2023-03-21 02:51:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
25 of 39 (64.10%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6647isedzqae2ngnapoxhhf6ztft75tiescw2mg43qy5nniwll7q._file
Verdict:
malicious
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Link:
https://tria.ge/reports/230321-db6awsae7y/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Drops file in System32 directory
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
thebest39393.ddns.net:8809
Unpacked files
SH256 hash:
f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff
MD5 hash:
40258dcce3671d3a542cffce4cb874cf
SHA1 hash:
0a8ef5122aee73d56d914c959845886cab801a42
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/cb000115-3def-4e5c-a943-43a466b48b4a/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f7b9f44883cc/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/f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff

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:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifcats observed in infostealers
Rule name:MALWARE_Win_QuasarStealer
Create hunting rule
Author:ditekshen
Description:Detects Quasar infostealer
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
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
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

QuasarRAT

Executable exe f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/376083/

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