MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b72b56dbce5ed9e23036bc98d439f81d9768c49952297e44029bcd6607407616. 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: 12


Intelligence 12 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b72b56dbce5ed9e23036bc98d439f81d9768c49952297e44029bcd6607407616
SHA3-384 hash: 93a160e5bffdd11fc4942af56301bcec83e7c3e3bc0cb85c0070afa2f180f66fee94b36d4c26ddbc5d43fe92b51a48ee
SHA1 hash: 7542e063441b4ca39719cfc17500237b397eed86
MD5 hash: eff57b405f081a20aa86eeab0bc3485f
humanhash: robert-colorado-twenty-beryllium
File name:svchost.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:514'048 bytes
First seen:2022-07-17 09:34:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:QTEgdc0YeebGbXOsA6j1RdheM+DvdggmcvNY2GIKSLcEu0b8FSBp9rhMOkrcTR3A:QTEgdfY0A623gWLefCfXkrcdA
Threatray 1'909 similar samples on MalwareBazaar
TLSH T1FAB46C4067F88527E1AE57BAE871043197F5F807B26BEF4F4A40A2F92C6670A9D40773
TrID 53.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
12.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
9.6% (.SCR) Windows screen saver (13101/52/3)
7.7% (.EXE) Win64 Executable (generic) (10523/12/4)
4.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter r3dbU7z
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
338
Origin country :
n/a
Vendor Threat Intelligence
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/291332/
Detection(s):
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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a service
Creating a window
Сreating synchronization primitives
Creating a file in the Windows subdirectories
Launching a process
Sending a custom TCP request
Sending a UDP request
Enabling autorun by creating a file
Gathering data
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/2364ed7c-8f48-434a-9bfa-8ce7f022741d
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1034620
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected unpacking (overwrites its own PE header)
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
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
Sigma detected: Schedule system process
System process connects to network (likely due to code injection or exploit)
Uses dynamic DNS services
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
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: 667110 Sample: svchost.exe Startdate: 17/07/2022 Architecture: WINDOWS Score: 100 87 gh0008888.ddns.net 2->87 103 Malicious sample detected (through community Yara rule) 2->103 105 Antivirus / Scanner detection for submitted sample 2->105 107 Multi AV Scanner detection for submitted file 2->107 109 7 other signatures 2->109 15 svchost.exe 5 2->15         started        19 svchost.exe 2 2->19         started        signatures3 process4 file5 83 C:\Windows\Fonts\system\svchost.exe, PE32 15->83 dropped 85 C:\Users\user\AppData\...\svchost.exe.log, ASCII 15->85 dropped 95 Detected unpacking (overwrites its own PE header) 15->95 97 Uses schtasks.exe or at.exe to add and modify task schedules 15->97 99 Drops PE files with benign system names 15->99 21 svchost.exe 4 15->21         started        25 schtasks.exe 1 15->25         started        101 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->101 signatures6 process7 dnsIp8 93 gh0008888.ddns.net 21->93 117 Antivirus detection for dropped file 21->117 119 System process connects to network (likely due to code injection or exploit) 21->119 121 Multi AV Scanner detection for dropped file 21->121 123 3 other signatures 21->123 27 cmd.exe 1 21->27         started        30 schtasks.exe 1 21->30         started        32 conhost.exe 25->32         started        signatures9 process10 signatures11 125 Uses ping.exe to sleep 27->125 127 Uses ping.exe to check the status of other devices and networks 27->127 34 svchost.exe 4 27->34         started        38 conhost.exe 27->38         started        40 PING.EXE 1 27->40         started        42 chcp.com 1 27->42         started        44 conhost.exe 30->44         started        process12 dnsIp13 89 gh0008888.ddns.net 34->89 111 Hides that the sample has been downloaded from the Internet (zone.identifier) 34->111 46 cmd.exe 1 34->46         started        49 schtasks.exe 1 34->49         started        signatures14 process15 signatures16 129 Uses ping.exe to sleep 46->129 51 svchost.exe 4 46->51         started        55 conhost.exe 46->55         started        57 PING.EXE 1 46->57         started        59 chcp.com 1 46->59         started        61 conhost.exe 49->61         started        process17 dnsIp18 91 gh0008888.ddns.net 51->91 113 Hides that the sample has been downloaded from the Internet (zone.identifier) 51->113 63 cmd.exe 51->63         started        66 schtasks.exe 51->66         started        signatures19 process20 signatures21 131 Uses ping.exe to sleep 63->131 133 Drops executables to the windows directory (C:\Windows) and starts them 63->133 68 svchost.exe 63->68         started        71 conhost.exe 63->71         started        73 chcp.com 63->73         started        75 PING.EXE 63->75         started        77 conhost.exe 66->77         started        process22 signatures23 115 Hides that the sample has been downloaded from the Internet (zone.identifier) 68->115 79 schtasks.exe 68->79         started        process24 process25 81 conhost.exe 79->81         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b72b56dbce5ed9e23036bc98d439f81d9768c49952297e44029bcd6607407616/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2022-07-17 09:35:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
34 of 41 (82.93%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w4vvnw6ol3m6embwxsmniopydwlwrrezkiux4ractpgwmb2aoyla._file
Verdict:
malicious
Similar samples:
06d2c189a15e08cc0082d987e5ef9eee7cfe3c4518c2b5ce813a73e50eb68acf
QuasarRAT
2acbe411d9169a8ea08c2f54cec03901956e3a1a5c80a0153ebe09792961b549
QuasarRAT
419a43cd026621eb0fb785f00fc7b502bd865e0cae5a65b540b03a12673f38d6
QuasarRAT
4a3a8abd7f6d5fd9adfb51703085e839781cffc341705123be40b0c146dcf0a9
QuasarRAT
76deb78a7177f1e80420103e59ce406209d3c9b8f3b8541034bd18dda4fd1393
QuasarRAT
8e87ee714c27ec41f7d2cd0b5db7eb4d0dbb6b30da76f30172d17eef82f942da
QuasarRAT
991e1506dfacc786546d890dc72ed38393ce901592c60d236304998c8e7026d7
QuasarRAT
+ 1'899 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:2022 spyware trojan
Link:
https://tria.ge/reports/220717-lkbrmsacgm/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Windows directory
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
gh0008888.ddns.net:2888
wc-ltc.ddns.net:2888
Unpacked files
SH256 hash:
b72b56dbce5ed9e23036bc98d439f81d9768c49952297e44029bcd6607407616
MD5 hash:
eff57b405f081a20aa86eeab0bc3485f
SHA1 hash:
7542e063441b4ca39719cfc17500237b397eed86
Link:
https://www.unpac.me/results/cf887310-e3a9-4d6d-960b-de92fcbf719b/
Malware family:
xRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b72b56dbce5e/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/b72b56dbce5ed9e23036bc98d439f81d9768c49952297e44029bcd6607407616

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_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
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 b72b56dbce5ed9e23036bc98d439f81d9768c49952297e44029bcd6607407616

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/291332/

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