MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e. 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: 16


Intelligence 16 IOCs 1 YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e
SHA3-384 hash: 403fb2c446716cf5feecc6cb97889fe23c3477ccdb95ccd0f0b0700ed2ae035711babe5001c81fcdd28270dcfd28ab53
SHA1 hash: 9d159c37928ca728de9de2741f2f34a0e1536f9a
MD5 hash: c911439a7f251c1f9bb80c5afb0c32ec
humanhash: oregon-zebra-single-orange
File name:c911439a7f251c1f9bb80c5afb0c32ec.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:95'232 bytes
First seen:2025-02-27 11:00:18 UTC
Last seen:2025-03-10 11:22:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:9N7qWJQSUMHTl8rXLpGX53nGopwUZfAjkt/Ib/QKM1Ckb/enDL9Igw52s:XqWTUMHWFGXt7NAjkAb/rfnvegcv
Threatray 5'313 similar samples on MalwareBazaar
TLSH T16D93C50AB6C98B02C5890575C5E7493903F3AA873B73D2863E8446CE1E417F9DDDA7CA
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
QuasarRAT C2:
212.23.222.222:5829

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
212.23.222.222:5829 https://threatfox.abuse.ch/ioc/1437199/

Intelligence

File Origin
# of uploads :
2
# of downloads :
473
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
c911439a7f251c1f9bb80c5afb0c32ec.exe
Verdict:
Malicious activity
Analysis date:
2025-02-27 11:10:48 UTC
Tags:
opendir netreactor purecrypter rat quasar remote evasion
Link:
https://app.any.run/tasks/05a45258-5d48-4314-924d-5c8e84ef9af6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.22027.19983.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67c046092dfba428b46ec0e8
Tags:
quasar virus msil remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Sending an HTTP GET request to an infection source
Restart of the analyzed sample
Launching a process
Creating a file
Creating a window
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Connection attempt to an infection source
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cryptor_detected net_reactor obfuscated obfuscated obfuscated packed
Link:
https://www.filescan.io/uploads/67c045fa3c5f644bd93aa98d/reports/353ec14a-82aa-4c5d-bf52-bf4bc79df266/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/5deefa0b-9d1a-4523-b1e7-952154a21977
Result
Threat name:
PureLog Stealer, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1625521
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Deletes itself after installation
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected PureLog Stealer
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1625521 Sample: 3UG6JhXaMQ.exe Startdate: 27/02/2025 Architecture: WINDOWS Score: 100 54 Zyg.ydns.eu 2->54 56 ipwho.is 2->56 58 bg.microsoft.map.fastly.net 2->58 72 Suricata IDS alerts for network traffic 2->72 74 Found malware configuration 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 11 other signatures 2->78 10 3UG6JhXaMQ.exe 15 3 2->10         started        15 MicroSoftOutlook.exe 2 2->15         started        17 MicroSoftOutlook.exe 2->17         started        signatures3 process4 dnsIp5 60 196.251.71.142, 49707, 62336, 62337 Web4AfricaZA Seychelles 10->60 52 C:\Users\user\AppData\...\3UG6JhXaMQ.exe.log, ASCII 10->52 dropped 88 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->88 90 Injects a PE file into a foreign processes 10->90 19 3UG6JhXaMQ.exe 1 4 10->19         started        23 powershell.exe 15 10->23         started        25 powershell.exe 15->25         started        27 MicroSoftOutlook.exe 15->27         started        29 powershell.exe 17->29         started        31 MicroSoftOutlook.exe 17->31         started        file6 signatures7 process8 file9 50 C:\Users\user\...\MicroSoftOutlook.exe, PE32 19->50 dropped 80 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->80 33 MicroSoftOutlook.exe 14 3 19->33         started        82 Deletes itself after installation 23->82 36 conhost.exe 23->36         started        38 conhost.exe 25->38         started        40 conhost.exe 29->40         started        signatures10 process11 signatures12 66 Antivirus detection for dropped file 33->66 68 Multi AV Scanner detection for dropped file 33->68 70 Injects a PE file into a foreign processes 33->70 42 MicroSoftOutlook.exe 33->42         started        46 powershell.exe 33->46         started        process13 dnsIp14 62 Zyg.ydns.eu 212.23.222.222, 5829, 62339 TMRDE unknown 42->62 64 ipwho.is 195.201.57.90, 443, 62341 HETZNER-ASDE Germany 42->64 84 Hides that the sample has been downloaded from the Internet (zone.identifier) 42->84 86 Installs a global keyboard hook 42->86 48 conhost.exe 46->48         started        signatures15 process16
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2025-02-25 02:40:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
26 of 38 (68.42%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wbcomwvruqq5wnq5czl4pckurz6vx3yxqxsnxiryqlttel2gruxa._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
2383b97ef686b72097c44f7b83f4f0ed27e97fb378c3bcab610fc7ca1e9100b6
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54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a
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82687bbf89460d44b3cef2d06f5d09288c45d787323254026f39cb3421cc3954
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b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e
QuasarRAT
b64f4ce87160ccf196a42334f23b99c28c5bfd910884e0d1caf9907d5fceb56b
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bfcfb297e627684383befe449638aacf9301c3d3ae67112abde298b4bfdc6ea8
QuasarRAT
dddf4ec4d813131cd65ab7386154db7ed9d63ce84e4704a5532e7aa22e624c58
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de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188
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error
QuasarRAT
fe81d86ec955f11899104772a5836901ed32ac4939de9a09e0e75e12d8c720bf
QuasarRAT
+ 5'303 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:jekwu defense_evasion discovery spyware trojan
Link:
https://tria.ge/reports/250227-m4m5fsvte1/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Indicator Removal: File Deletion
Deletes itself
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
Zyg.ydns.eu:5829
Opy.ydns.eu:5829
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/cfef8c56-7dce-4996-82ac-89ff38d78c00
Unpacked files
SH256 hash:
b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e
MD5 hash:
c911439a7f251c1f9bb80c5afb0c32ec
SHA1 hash:
9d159c37928ca728de9de2741f2f34a0e1536f9a
Link:
https://www.unpac.me/results/d08248e7-0023-459b-8471-d5441cf51d24/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b044e65ab1a4/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b044e65ab1a421db361d1657c789548e7d5bef1785e4dba23882e7322f468d2e

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:AgentTesla
Create hunting rule
Author:Harish Kumar P
Description:Yara Rule to Detect AgentTesla
Rule name:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
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.

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 (GUARD_CF)high

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