MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29. 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: 18


Intelligence 18 IOCs 1 YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29
SHA3-384 hash: db016e0081ca8cd28ea3a545f36c723d032c74df88e9c4e188bf3072ce2707841d996bb75cf93f29d44c30785fa649f2
SHA1 hash: 0243213e394988c281596785b9cdd3c5c8db0253
MD5 hash: 9aae678c7cea5987d5092a61623207e2
humanhash: football-green-eight-quebec
File name:9aae678c7cea5987d5092a61623207e2.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:514'048 bytes
First seen:2025-01-17 11:55:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'749 x AgentTesla, 19'653 x Formbook, 12'246 x SnakeKeylogger)
ssdeep 12288:1TEgdfYXxURT3qh4kywJUpvZKJyRXMUykUcdW:WUw+25ywJUpvZKJGn8cdW
Threatray 372 similar samples on MalwareBazaar
TLSH T162B45B8123FCC62BE1AE57BDE8B14421ABF4F407A667EB4F4940A1E92C567429D407F3
TrID 40.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
31.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
9.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
5.7% (.EXE) Win64 Executable (generic) (10522/11/4)
3.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Magika pebin
Reporter abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
QuasarRAT C2:
93.177.102.208:1337

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
93.177.102.208:1337 https://threatfox.abuse.ch/ioc/1384715/

Intelligence

File Origin
# of uploads :
1
# of downloads :
511
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
9aae678c7cea5987d5092a61623207e2.exe
Verdict:
Malicious activity
Analysis date:
2025-01-17 11:56:19 UTC
Tags:
rat asyncrat remote quasar evasion
Link:
https://app.any.run/tasks/918ce61f-b3c2-437c-af48-70c726529458

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Malware.Bulz-9823462-0
Create hunting rule

Win.Malware.Generic-9883082-0
Create hunting rule

Win.Malware.Generic-9883083-0
Create hunting rule

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

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

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678a45554487910100dfc9c8
Tags:
infosteal autorun quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm explorer infostealer keylogger lolbin obfuscated obfuscated quasarrat rat remote runonce schtasks stealer stealer vermin
Link:
https://www.filescan.io/uploads/678a455ba364b83b70a6e7c4/reports/940bed11-ba9e-431c-ab12-4e466168085e/overview
Verdict:
Malicious
Labled as:
Trojan.Agent
Link:
https://www.hybrid-analysis.com/sample/5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29
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/f3d8da64-62fe-482a-81d7-00591ad36ff2
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1593650
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Suricata IDS alerts for network traffic
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1593650 Sample: t7f6VkkOBd.exe Startdate: 17/01/2025 Architecture: WINDOWS Score: 100 41 tools.keycdn.com 2->41 43 api.ipify.org 2->43 59 Suricata IDS alerts for network traffic 2->59 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 8 other signatures 2->65 9 t7f6VkkOBd.exe 5 2->9         started        13 t7f6VkkOBd.exe 2 2->13         started        signatures3 process4 file5 37 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 9->37 dropped 39 C:\Users\user\AppData\...\t7f6VkkOBd.exe.log, CSV 9->39 dropped 67 Uses schtasks.exe or at.exe to add and modify task schedules 9->67 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->69 15 Client.exe 8 9->15         started        19 schtasks.exe 1 9->19         started        21 Client.exe 14 8 13->21         started        23 schtasks.exe 1 13->23         started        signatures6 process7 dnsIp8 45 93.177.102.208, 1337, 49731, 49732 ONLINENETTR Turkey 15->45 51 Antivirus detection for dropped file 15->51 53 Multi AV Scanner detection for dropped file 15->53 55 Machine Learning detection for dropped file 15->55 25 schtasks.exe 1 15->25         started        27 conhost.exe 19->27         started        47 tools.keycdn.com 185.172.148.96, 443, 49734 PROINITYPROINITYDE Germany 21->47 49 api.ipify.org 172.67.74.152, 443, 49735 CLOUDFLARENETUS United States 21->49 57 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->57 29 schtasks.exe 1 21->29         started        31 conhost.exe 23->31         started        signatures9 process10 process11 33 conhost.exe 25->33         started        35 conhost.exe 29->35         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-01-17 11:56:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=l5kbufvwpd5xt7tnyfikk4iirappzhjzfz3wiqbe4kekhdac74uq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
0ffa441a13f140ff08492899f44d4d30288f193e68a1affcc0d62e617d1532cd
QuasarRAT
37fa30c9dcf255bda62c0a6b7f88a48263a3da18d18d8c66b1cbbc801077cfdf
QuasarRAT
5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29
QuasarRAT
a24dafb52de61a6bb3d363afb0d02ac3311d4a4f221b20f246c2fa2d5cb352fd
QuasarRAT
error
QuasarRAT
f49f187849de1ec6c2ac50585cc3ce47ff4b220e413cdedb63b762efd4504bcd
QuasarRAT
+ 362 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Link:
https://tria.ge/reports/250117-n31jtswmdx/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Looks up external IP address via web service
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
93.177.102.208:1337
Verdict:
Malicious
Tags:
rat quasar_rat vermin stealer Win.Malware.Bulz-9823462-0
YARA:
malware_windows_quasarrat win_quasar_rat_client MAL_QuasarRAT_May19_1 Vermin_Keylogger_Jan18_1 MALWARE_Win_Quasarstealer
Link:
https://app.threat.zone/submission/a6e9e198-c669-43dd-bdae-060399352689
Unpacked files
SH256 hash:
5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29
MD5 hash:
9aae678c7cea5987d5092a61623207e2
SHA1 hash:
0243213e394988c281596785b9cdd3c5c8db0253
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/c508a059-ce7a-468a-bd39-c99259fe2f47/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/5f541a16b678/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
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 artifacts observed in infostealers
Rule name:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
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
Create hunting rule
Description:Detects QuasarRAT malware
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:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:quasarrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Create hunting rule
Author:jeFF0Falltrades
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vermin_Keylogger_Jan18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:win_quasar_rat_client
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.

File information

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

Web download

QuasarRAT

Executable exe 5f541a16b678fb79fe6dc150a57108881efc9d392e77644024e288a38c02ff29

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3403349/
  
Delivery method
Distributed via web download

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments