MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 191e85b65efedab77e67bdaa3a4aad1915f0fa991c1858b359d8a92c679206a8. 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: 15


Intelligence 15 IOCs YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 191e85b65efedab77e67bdaa3a4aad1915f0fa991c1858b359d8a92c679206a8
SHA3-384 hash: 8aebbc37771f1a2d1889e7f10f986c7fa0dbc58a399ebb65c8f5d5e3be7e19bc3caeeb3918f8a64ef1ced8694d0684bf
SHA1 hash: c25c80b4325218cd8e4f4ca11e404293829963f2
MD5 hash: 1e9ac0b5547b0fa980e4ee8529677be5
humanhash: wolfram-skylark-jersey-hotel
File name:quasar_clean.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:385'024 bytes
First seen:2022-11-10 09:37:36 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:B8NHXf500M+4EFC4KQk7lKxbvY67CACSerymKtwe:6d50yAQlbCjSerymmwe
Threatray 411 similar samples on MalwareBazaar
TLSH T1CC848C1373A4EA3BD1FE2F3AE43206154BB0D547B716E38B6A5855B82D133868D913B3
TrID 43.3% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
18.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
9.7% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
7.7% (.SCR) Windows screen saver (13097/50/3)
6.2% (.EXE) Win64 Executable (generic) (10523/12/4)
Reporter 0xToxin
Tags:dnuocc-com exe Quasar QuasarRAT top

Intelligence

File Origin
# of uploads :
1
# of downloads :
226
Origin country :
IL IL
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
quasar_clean.exe
Verdict:
Malicious activity
Analysis date:
2022-11-10 09:40:21 UTC
Tags:
rat quasar evasion trojan
Link:
https://app.any.run/tasks/a9edb041-54db-45a0-a965-5164067d55d7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/331821/
Detection(s):
Win.Packed.Generic-9829635-0
Create hunting rule

Win.Trojan.Generic-9829636-0
Create hunting rule

Win.Packed.Generic-9830106-0
Create hunting rule

Win.Trojan.Generic-6295765-0
Create hunting rule

Win.Malware.Generic-6623004-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Creating a window
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm fingerprint keylogger packed quasar quasarrat rat shell32.dll stealer stealer vermin xrat
Link:
https://www.filescan.io/uploads/636cc67b37a53af3a7f54ccc/reports/920d25de-fdff-440a-aab9-9d22bd914b5f/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/1f9d9b60-6bcf-4d65-831d-f0869e21be71
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1110239
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
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)
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Snort IDS alert for network traffic
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 signatures2 2 Behavior Graph ID: 742934 Sample: quasar_clean.exe Startdate: 10/11/2022 Architecture: WINDOWS Score: 100 47 Snort IDS alert for network traffic 2->47 49 Multi AV Scanner detection for domain / URL 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 6 other signatures 2->53 8 quasar_clean.exe 15 5 2->8         started        13 quasar_clean.exe 2 2->13         started        process3 dnsIp4 31 ip-api.com 208.95.112.1, 49702, 49703, 80 TUT-ASUS United States 8->31 27 C:\Users\user\AppData\Roaming\tilk\tors.exe, PE32 8->27 dropped 29 C:\Users\user\...\quasar_clean.exe.log, ASCII 8->29 dropped 55 May check the online IP address of the machine 8->55 57 Uses schtasks.exe or at.exe to add and modify task schedules 8->57 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->59 15 tors.exe 14 2 8->15         started        19 schtasks.exe 1 8->19         started        file5 signatures6 process7 dnsIp8 33 dnuocc.com 185.216.71.78, 49704, 49705, 49706 CLOUDCOMPUTINGDE Germany 15->33 35 www.dnuocc.com 15->35 37 ip-api.com 15->37 39 Antivirus detection for dropped file 15->39 41 May check the online IP address of the machine 15->41 43 Machine Learning detection for dropped file 15->43 45 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->45 21 schtasks.exe 1 15->21         started        23 conhost.exe 19->23         started        signatures9 process10 process11 25 conhost.exe 21->25         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/191e85b65efedab77e67bdaa3a4aad1915f0fa991c1858b359d8a92c679206a8/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2022-11-10 09:38:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
24 of 25 (96.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=depilns673nlo7thxwvdusvndek7b6uzdqmfrm2z3cusyz4sa2ua._file
Verdict:
malicious
Similar samples:
0579f660e3087207714180f271bd21e9ecaea4e7103e1a140ebadf378473416f
QuasarRAT
100f14bd43501076a1b9dc89bdbc702aadbe65054c05e4bdf9ad8f0000d1c699
QuasarRAT
126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134
QuasarRAT
304f214c5cf9e3ca41bad14ef7ccf97a4c9e7e90eaadb61eb3a550e423e5af28
QuasarRAT
52807927efca34144cfa56a3868a913858fa0fc74aeb0b370964688ec49f1312
QuasarRAT
b9d9a182e7f6f1afaf0f5058def2ca3e4e65f71a387c228c0a098b6c41b6d319
QuasarRAT
e1993021c0575594ff63f2685d56f1e80c60d6fc67e5e86ff1c5ef7b25f773d5
QuasarRAT
f4070df8414261f9d218626189c7d3c303457fc6ea442ea413a42131f57cca21
QuasarRAT
ff84b0d2381b71c2bfd1575916e663a96ae5120b0d059411411f9224fc1004c0
QuasarRAT
+ 401 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:top spyware trojan
Link:
https://tria.ge/reports/221110-ll2pfsafaj/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Loads dropped DLL
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
dnuocc.com:64594
www.dnuocc.com:64594
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/552b0a2f-a5ff-4257-93e8-bfccde80fc9a
Unpacked files
SH256 hash:
191e85b65efedab77e67bdaa3a4aad1915f0fa991c1858b359d8a92c679206a8
MD5 hash:
1e9ac0b5547b0fa980e4ee8529677be5
SHA1 hash:
c25c80b4325218cd8e4f4ca11e404293829963f2
Link:
https://www.unpac.me/results/d38e798e-2e26-4da3-b2b1-87eef6c9b08c/
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/191e85b65efedab77e67bdaa3a4aad1915f0fa991c1858b359d8a92c679206a8

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:Windows_Trojan_Quasarrat_e52df647
Create hunting rule
Author:Elastic Security
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.

Malspam

QuasarRAT

Executable exe 191e85b65efedab77e67bdaa3a4aad1915f0fa991c1858b359d8a92c679206a8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/331821/

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