MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 991e1506dfacc786546d890dc72ed38393ce901592c60d236304998c8e7026d7. 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: 14


Intelligence 14 IOCs 1 YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 991e1506dfacc786546d890dc72ed38393ce901592c60d236304998c8e7026d7
SHA3-384 hash: 6df9794ef1ad1f362a134dd314431857d5b992a2d250442a132a5764dc8ecb57c1d63216945567b4059a40b6c1d47ff0
SHA1 hash: 174faec8bf9b18209fbcc47a5ced78e8d8018aea
MD5 hash: 1849bd4fb86ce9f36d8ded2c1a7078ff
humanhash: oranges-alpha-ohio-louisiana
File name:1849bd4fb86ce9f36d8ded2c1a7078ff.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:514'048 bytes
First seen:2022-05-24 13:47:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:sTEgdc0YhebGbXOsA6j1RdhYphtLRBdxTphDdZis4tIcEbKb8F9OktcTR3a:sTEgdfY5A6gnttxTPSxiLtIktcda
Threatray 1'067 similar samples on MalwareBazaar
TLSH T189B46B4023F8862BE17F5779E97104209BF4F42BB267EB9F5540A2F92E667029E40773
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


Avatar
abuse_ch
QuasarRAT C2:
45.131.109.121:8080

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
45.131.109.121:8080 https://threatfox.abuse.ch/ioc/630064/

Intelligence

File Origin
# of uploads :
1
# of downloads :
393
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLUhqbTE5U0g4d3lnR0wwZWJNb3BCT29idC1yMFNUUXxBQ3Jtc0trN0J6T3lPZDJTZEt0OWlaZkxUUUY0a196WWVCTlRtY1lvRlZCZUk0VWUzMWc2NWc1WUZtTVNoR01YU0hNbmZvdl9MVU5yaE9SSUJ0eXhlWWdhYjdrSlhLR3VfQ0ZlUnY4ZkNRLThfWUtlaFJFWnlBUQ&q=https%3A%2F%2Fscriptkid.de%2Fdownload.php&v=ty2tkkdfRNc
Verdict:
Malicious activity
Analysis date:
2022-05-19 22:11:02 UTC
Tags:
trojan rat quasar asyncrat
Link:
https://app.any.run/tasks/6c2ca4e8-30a1-433b-9abe-915bf47a955e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/274132/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Sending a custom TCP request
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm control.exe explorer.exe greyware keylogger obfuscated packed quasarrat rat remote.exe replace.exe schtasks.exe shell32.dll stealer update.exe vermin
Link:
https://www.filescan.io/uploads/628ce2183223462f89df524b/reports/e20f7b52-04e3-4edb-b74d-8ac53bb30633/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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bbddcf11-c533-4762-8bad-89d7e672f7c5
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1000693
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
Found 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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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: 633186 Sample: gGzaaawsvc.exe Startdate: 24/05/2022 Architecture: WINDOWS Score: 100 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 7 other signatures 2->48 8 gGzaaawsvc.exe 5 2->8         started        12 gGzaaawsvc.exe 2 2->12         started        process3 file4 36 C:\Users\user\...\WindowsDefendSecure.exe, PE32 8->36 dropped 38 C:\Users\user\AppData\...\gGzaaawsvc.exe.log, ASCII 8->38 dropped 50 Uses schtasks.exe or at.exe to add and modify task schedules 8->50 52 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->52 14 WindowsDefendSecure.exe 2 8->14         started        18 schtasks.exe 1 8->18         started        20 WindowsDefendSecure.exe 2 12->20         started        22 schtasks.exe 1 12->22         started        signatures5 process6 dnsIp7 40 45.131.109.121, 49737, 49745, 49748 CSH-AS-1US Germany 14->40 54 Antivirus detection for dropped file 14->54 56 Multi AV Scanner detection for dropped file 14->56 58 Machine Learning detection for dropped file 14->58 24 schtasks.exe 1 14->24         started        26 conhost.exe 18->26         started        60 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->60 28 schtasks.exe 1 20->28         started        30 conhost.exe 22->30         started        signatures8 process9 process10 32 conhost.exe 24->32         started        34 conhost.exe 28->34         started       
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/991e1506dfacc786546d890dc72ed38393ce901592c60d236304998c8e7026d7/
Threat name:
ByteCode-MSIL.Trojan.Quasar
Create hunting rule
Status:
Malicious
First seen:
2022-05-19 21:03:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
25 of 26 (96.15%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tepbkbw7vtdymvdnreg4olwtqoj45eavslda2i3dasmyzdtqe3lq._file
Verdict:
malicious
Similar samples:
2acbe411d9169a8ea08c2f54cec03901956e3a1a5c80a0153ebe09792961b549
QuasarRAT
419a43cd026621eb0fb785f00fc7b502bd865e0cae5a65b540b03a12673f38d6
QuasarRAT
76deb78a7177f1e80420103e59ce406209d3c9b8f3b8541034bd18dda4fd1393
QuasarRAT
7c87b7eba362a0977455c82ea09d8172084306587c36827a52030bf0bcd9c93d
QuasarRAT
965a8d621907f2a2c04e8ca84801f448c68e133491b26d5336c851059db5b3ec
QuasarRAT
d328076556526a90907af4a328621d490307be0ff3ff79b14ed8a9c978f9440f
QuasarRAT
+ 1'057 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:client spyware suricata trojan
Link:
https://tria.ge/reports/220524-q34btsgecp/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Executes dropped EXE
Quasar Payload
Quasar RAT
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Observed Malicious SSL Cert (Quasar CnC)
Malware Config
C2 Extraction:
45.131.109.121:8080
Unpacked files
SH256 hash:
991e1506dfacc786546d890dc72ed38393ce901592c60d236304998c8e7026d7
MD5 hash:
1849bd4fb86ce9f36d8ded2c1a7078ff
SHA1 hash:
174faec8bf9b18209fbcc47a5ced78e8d8018aea
Link:
https://www.unpac.me/results/6063c6ff-21ad-45cb-b6b0-6fbed7a7d7f5/
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/991e1506dfacc786546d890dc72ed38393ce901592c60d236304998c8e7026d7

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_Lokibot_Stealer
Create hunting rule
Description:Detects Lokibot Stealer Variants
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
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/

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/274132/

Comments