MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 88a577b83b5cd63171a294b062b6b0c095a8275a2484f2181cd81538992dc903. 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: 6


Intelligence 6 IOCs YARA 36 File information Comments
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SHA256 hash: 88a577b83b5cd63171a294b062b6b0c095a8275a2484f2181cd81538992dc903
SHA3-384 hash: d6cc30dce572317e1751a72b500f02a8b5be4225d141f2e8d39e66f4032d564ce55f4f0f830f23bdb258240585ae7a5d
SHA1 hash: 13572d061cbe7e29f58ec1b19a93c48452733681
MD5 hash: 3519ea7581b844397543278903f0730b
humanhash: illinois-georgia-artist-nebraska
File name:Client.rar
Download: download sample
Signature QuasarRAT
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File size:169'195 bytes
First seen:2024-11-27 11:01:08 UTC
Last seen:Never
File type: rar
MIME type:application/x-rar
ssdeep 3072:1Xj4628L/6TGO4E6vz16x74ETeBwyeoifqTgaYKW4Jl4jE+cX:1XnTL/gGO4EopQ0ET0wDoiCTqKW/Q+i
TLSH T164F3228453707A296DC03532F85ACFA1F243BB32AD157643DEDA3A42E924F9F054D22B
TrID 61.5% (.RAR) RAR compressed archive (v5.0) (8000/1)
38.4% (.RAR) RAR compressed archive (gen) (5000/1)
Magika rar
Reporter lontze7
Tags:QuasarRAT rar

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
FR FR
File Archive Information

This file archive contains 1 file(s), sorted by their relevance:

File name:Client.exe
File size:356'352 bytes
SHA256 hash: 0e9cf144db889d734e8cd7bf4a7fe7fbfce2b0e4a1811e28529b8fef441bfef8
MD5 hash: 4ae0072b64d5fd0d3487aa9471170c88
MIME type:application/x-dosexec
Signature QuasarRAT
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6746fc2bd0583382434b7033
Tags:
dropper quasar keylog remo
Gathering data
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/88a577b83b5cd63171a294b062b6b0c095a8275a2484f2181cd81538992dc903
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/88a577b83b5cd63171a294b062b6b0c095a8275a2484f2181cd81538992dc903/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2024-11-27 09:48:00 UTC
File Type:
Binary (Archive)
Extracted files:
4
AV detection:
27 of 38 (71.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rcsxpob3ltldc4ncssygfnvqyck2qj22escpega43aktrgjnzebq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 discovery spyware trojan
Link:
https://tria.ge/reports/241127-pck7wssqbt/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
System Location Discovery: System Language Discovery
Looks up external IP address via web service
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
51.79.176.188:4782
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/88a577b83b5cd63171a294b062b6b0c095a8275a2484f2181cd81538992dc903

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:CN_disclosed_20180208_KeyLogger_1
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Author:Florian Roth (Nextron Systems)
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:CN_disclosed_20180208_KeyLogger_1_RID3227
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Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:Detect_PowerShell_Obfuscation
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Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
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Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
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Author:ditekSHen
Description:Detects executables containing common artifacts observed in infostealers
Rule name:malware_Quasar_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_QuasarRAT
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Author:ditekSHen
Description:QuasarRAT payload
Rule name:MAL_QuasarRAT_May19_1
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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
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Description:Detects QuasarRAT malware
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
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Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:Multifamily_RAT_Detection
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Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
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Author:malware-lu
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Quasar
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Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:QuasarRAT
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Author:ditekshen
Description:QuasarRAT payload
Rule name:quasarrat
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Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
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Author:jeFF0Falltrades
Rule name:Quasar_RAT_1
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Author:Florian Roth (Nextron Systems)
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_1
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Author:@SOCRadar
Description:Detects Quasar RAT
Rule name:Quasar_RAT_1_RID2B54
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Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2
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Description:Detects Quasar RAT
Rule name:Quasar_RAT_2
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Author:Florian Roth (Nextron Systems)
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2_RID2B55
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:RansomPyShield_Antiransomware
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Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:RANSOMWARE
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Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
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Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:Vermin_Keylogger_Jan18_1
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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:Windows_Trojan_Quasarrat_e52df647
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Author:Elastic Security
Rule name:win_quasar_rat_client
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Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.
Rule name:xRAT_1
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Author:Florian Roth (Nextron Systems)
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W
Rule name:xRAT_1_RID2900
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Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W

File information

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

Web download

QuasarRAT

rar 88a577b83b5cd63171a294b062b6b0c095a8275a2484f2181cd81538992dc903

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3308364/

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