MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13. 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: 19


Intelligence 19 IOCs 1 YARA 29 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13
SHA3-384 hash: 3828586030b6302b1b07be55f6335e718c0f59dda3e70bc7f2b8deb7869eff6ec25fae4161b02c45607a4ec75e673b3d
SHA1 hash: 2f20f6a50a087a9ce1e3383b7afe0f2f0512e20c
MD5 hash: 717f35f333d02b5157f2c48391b92eb9
humanhash: mobile-cold-virginia-queen
File name:file
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'266'048 bytes
First seen:2026-01-20 20:57:19 UTC
Last seen:2026-01-20 22:39:38 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'749 x AgentTesla, 19'653 x Formbook, 12'246 x SnakeKeylogger)
ssdeep 49152:Pvkt62XlaSFNWPjljiFa2RoUYICzytq2oGdkTHHB72eh2NT:Pv462XlaSFNWPjljiFXRoUYICzytN
Threatray 1'985 similar samples on MalwareBazaar
TLSH T146E56B0437F85E72E16BD7B3E5B0501263F1F82AF363EB0B5181A77A5C93B5488426A7
TrID 58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
8.4% (.EXE) Win64 Executable (generic) (10522/11/4)
5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter Bitsight
Tags:dropped-by-amadey exe fbf543 QuasarRAT


Avatar
Bitsight
url: http://130.12.180.43/files/6382108206/r4tMpI3.exe

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
41.216.188.90:8081 https://threatfox.abuse.ch/ioc/1734939/

Intelligence

File Origin
# of uploads :
10
# of downloads :
195
Origin country :
US US
Vendor Threat Intelligence
Details
Link:
https://research.acce.ciphertechsolutions.com/results/1ea12790-022d-48f1-8e63-be10d68c8521/
Malware family:
quasar
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2026-01-20 21:02:58 UTC
Tags:
rat quasar remote evasion auto-reg
Link:
https://app.any.run/tasks/3a2e6327-45d1-4697-bd60-d01f9f7c5ce0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/49583/
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

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=696fec3cbcad3327ec06fd88
Tags:
infosteal autorun quasar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 infostealer obfuscated obfuscated reconnaissance stealer
Link:
https://www.filescan.io/uploads/696fec40607e8377fadd9daf/reports/0d9c3de8-f4a1-4851-bb58-4ce1e51ae8a6/overview
Verdict:
Malicious
Labled as:
Trojan.Agent
Link:
https://www.hybrid-analysis.com/sample/ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-01-20T18:09:00Z UTC
Last seen:
2026-01-21T12:58:00Z UTC
Hits:
~100
Detections:
Trojan-PSW.Win32.Stealer.sb Trojan-PSW.MSIL.Agent.sb Trojan.Win32.Quasar.sb Trojan.MSIL.Quasar.a HEUR:Trojan-Spy.MSIL.Agent.sb HEUR:Trojan.MSIL.Quasar.gen PDM:Trojan.Win32.Tasker.cust PDM:Trojan.Win32.Generic
Link:
https://opentip.kaspersky.com/ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6cfce8ff-f7d6-4286-8c77-68e251601999
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13
Verdict:
inconclusive
YARA:
13 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.31 Win 32 Exe x86
Link:
https://app.malva.re/file/717f35f333d02b5157f2c48391b92eb9
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13/
Verdict:
Malicious
Threat:
Family.QUASARRAT
Link:
https://tip.neiki.dev/file/ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2026-01-20 21:23:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
31 of 38 (81.58%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=762yuxdusbikpnyss7qnxmkzzckjxsp5ylxdju5w4bi3q3okxujq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
28852b784a3ace6554544ea14795a3f1cd1d37228bfcfe2eebe09dc667a1978d
QuasarRAT
59d60ad0d6f56441851a407f4ac5a9ad0cf7d8a9532fe30f2de3f02c523e672a
QuasarRAT
5e532dc348cea226907ee286cc623670b87c8f642262ea771b226b7b684fc7d9
QuasarRAT
bfeebb9bc0a5d9543ed907a650defe0ffe6d2b7e8db4a6fd710d16eadcbab276
QuasarRAT
c1b011778271c50b58e7d1cc972434f98671118a3dd381dc4fd5f52b5f2c42a2
QuasarRAT
error
QuasarRAT
+ 1'975 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:master execution persistence spyware trojan
Link:
https://tria.ge/reports/260120-zrt4fsaz7h/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
41.216.188.90:8081
Unpacked files
SH256 hash:
ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13
MD5 hash:
717f35f333d02b5157f2c48391b92eb9
SHA1 hash:
2f20f6a50a087a9ce1e3383b7afe0f2f0512e20c
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/f228632c-f597-4e52-bed5-6d88a45d4d26/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ffb58a5c7490/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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
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 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
Description:Detects QuasarRAT malware
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
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:NETexecutableMicrosoft
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:RC6_Constants
Create hunting rule
Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Windows_Generic_Threat_803feff4
Create hunting rule
Author:Elastic Security
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 ffb58a5c749050a7b71297e0dbb159c8949bc9fdc2ee34d3b6e051b86dcabd13

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/49583/

Comments