MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c03bcab540749f92aab1c8b5a12237d243d64311a7937ab6b8ce232667f73d67. 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 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c03bcab540749f92aab1c8b5a12237d243d64311a7937ab6b8ce232667f73d67
SHA3-384 hash: a90e04c0c43e2c6c6c3f0e83a958ccc3eee72c634f49f5c59149888bff3f561546d7ace3ea985a27736d2ed4c923c618
SHA1 hash: b3d64e99c3fc6461fc3b8d601afd2a517ae15626
MD5 hash: 64b9e8fc81331af4aacac926048cff41
humanhash: rugby-ack-enemy-river
File name:64b9e8fc81331af4aacac926048cff41.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:356'352 bytes
First seen:2022-08-31 18:26:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 6144:Y2NHXf500Mla2Hr9t2YbXjt66RyoaaB5t6:nd50jqGYCyoaaB/6
TLSH T149748D1337A4EA3BD1BD573AE4320A154BB4D547BB16F38F9A5886B82D133868D413B3
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 abuse_ch
Tags:exe QuasarRAT RAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
351
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/306983/
Detection(s):
Win.Packed.Generic-9829635-0
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Win.Trojan.Generic-9829636-0
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Win.Packed.Generic-9830106-0
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Win.Trojan.Generic-6295765-0
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Win.Malware.Generic-6623004-0
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Setting a keyboard event handler
Creating a file in the %AppData% subdirectories
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint greyware keylogger packed quasar quasarrat rat shell32.dll stealer stealer vermin xrat
Link:
https://www.filescan.io/uploads/630fa886fbf1afa4927c1b70/reports/2e7736dd-50fc-4a27-9aab-e8c2a7e2222b/overview
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.
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e525c1d7-7ddd-4aa3-8851-5c28605628e1
Result
Threat name:
AsyncRAT, Quasar
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1061861
Behaviour
Behavior Graph:
n/a
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c03bcab540749f92aab1c8b5a12237d243d64311a7937ab6b8ce232667f73d67/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2022-08-31 15:55:30 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
25 of 26 (96.15%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ya54vnkaospzfkvrzc22cirx2jb5mqyru6jxvnvyzyrsmz7xhvtq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:renew spyware trojan
Link:
https://tria.ge/reports/220831-w3q96aaadr/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Looks up external IP address via web service
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
51.12.244.74:3788
Unpacked files
SH256 hash:
c03bcab540749f92aab1c8b5a12237d243d64311a7937ab6b8ce232667f73d67
MD5 hash:
64b9e8fc81331af4aacac926048cff41
SHA1 hash:
b3d64e99c3fc6461fc3b8d601afd2a517ae15626
Link:
https://www.unpac.me/results/45ff40ba-a5d7-4055-a5b6-4d0dac833d52/
Malware family:
xRAT
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c03bcab54074/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/c03bcab540749f92aab1c8b5a12237d243d64311a7937ab6b8ce232667f73d67

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
Create hunting rule
Author:Florian Roth
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
Create hunting rule
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
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_Quasar_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_QuasarRAT
Create hunting rule
Author:ditekSHen
Description:QuasarRAT payload
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:Quasar_RAT_1
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:Quasar_RAT_1_RID2B54
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:Quasar_RAT_2
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: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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vermin_Keylogger_Jan18_1
Create hunting rule
Author:Florian Roth
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:xRAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W
Rule name:xRAT_1_RID2900
Create hunting rule
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

Executable exe c03bcab540749f92aab1c8b5a12237d243d64311a7937ab6b8ce232667f73d67

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2275979/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/306983/

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