MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf. 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: 19


Intelligence 19 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf
SHA3-384 hash: c859d4c090fca458b29acfcc1f82b3398f430f3156659aedef906883cf6fbc4df0c0b2aa2844c85ee25408ea117e0d5c
SHA1 hash: e2b5a40dd2abfa03671fde7c4e74f9b2846f989f
MD5 hash: 3cf4f19b7c69135acb3c4c9bb9cdfb90
humanhash: july-xray-violet-butter
File name:Solara.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'266'048 bytes
First seen:2024-08-03 18:22:56 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'604 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 49152:DvehBYjCO4Dt2d5aKCuVPzlEmVQL0wvwkaxAtueYFoGdXTHHB72eh2NT:DvAt2d5aKCuVPzlEmVQ0wvwf+tuee
Threatray 763 similar samples on MalwareBazaar
TLSH T158E56B0537F85E32E16BD7B3E5B0501263F1F82AF363EB0B6181A77A5C93B5448426A7
TrID 37.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
29.5% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
8.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
6.7% (.SCR) Windows screen saver (13097/50/3)
5.3% (.EXE) Win64 Executable (generic) (10523/12/4)
Reporter Chainskilabs
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
335
Origin country :
US US
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
Solara.exe
Verdict:
Malicious activity
Analysis date:
2024-08-03 18:13:07 UTC
Tags:
quasar
Link:
https://app.any.run/tasks/82d25d43-bb8c-42aa-abc5-d257ade65028

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66ae758b037b02d0daed59de
Tags:
Execution Generic Network Stealth
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the system32 subdirectories
Launching a process
Creating a process from a recently created file
Creating a file
Setting a keyboard event handler
DNS request
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf
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/96833e43-8086-430b-8fd6-a2a9f7185192
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1487318
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Drops executables to the windows directory (C:\Windows) and starts them
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
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: 1487318 Sample: Solara.exe Startdate: 03/08/2024 Architecture: WINDOWS Score: 100 178 nohchy-47404.portmap.host 2->178 180 bg.microsoft.map.fastly.net 2->180 190 Found malware configuration 2->190 192 Malicious sample detected (through community Yara rule) 2->192 194 Antivirus detection for dropped file 2->194 196 7 other signatures 2->196 15 Solara.exe 5 2->15         started        19 SolaraExecutor.exe 9 2->19         started        signatures3 process4 file5 172 C:\Windows\System32\...\SolaraExecutor.exe, PE32 15->172 dropped 174 C:\Users\user\AppData\...\Solara.exe.log, CSV 15->174 dropped 182 Uses schtasks.exe or at.exe to add and modify task schedules 15->182 184 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->184 21 SolaraExecutor.exe 10 15->21         started        25 schtasks.exe 1 15->25         started        176 C:\Users\user\AppData\...\7hxkqyRXLSy4.bat, DOS 19->176 dropped 27 cmd.exe 1 19->27         started        29 schtasks.exe 1 19->29         started        signatures6 process7 file8 158 C:\Users\user\AppData\...\H3LEHAVrUmTq.bat, DOS 21->158 dropped 202 Antivirus detection for dropped file 21->202 204 Multi AV Scanner detection for dropped file 21->204 206 Machine Learning detection for dropped file 21->206 208 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->208 31 cmd.exe 1 21->31         started        34 schtasks.exe 1 21->34         started        36 conhost.exe 25->36         started        210 Uses ping.exe to sleep 27->210 38 SolaraExecutor.exe 27->38         started        41 chcp.com 1 27->41         started        43 conhost.exe 27->43         started        45 PING.EXE 1 27->45         started        47 conhost.exe 29->47         started        signatures9 process10 file11 228 Uses ping.exe to sleep 31->228 230 Uses ping.exe to check the status of other devices and networks 31->230 49 SolaraExecutor.exe 9 31->49         started        53 conhost.exe 31->53         started        55 PING.EXE 1 31->55         started        57 chcp.com 1 31->57         started        59 conhost.exe 34->59         started        162 C:\Users\user\AppData\...\QbF1TeeBlgcH.bat, DOS 38->162 dropped 232 Hides that the sample has been downloaded from the Internet (zone.identifier) 38->232 61 cmd.exe 38->61         started        63 schtasks.exe 38->63         started        65 conhost.exe 41->65         started        signatures12 process13 file14 156 C:\Users\user\AppData\...\u8Ps4z8OWSn5.bat, DOS 49->156 dropped 186 Hides that the sample has been downloaded from the Internet (zone.identifier) 49->186 67 cmd.exe 49->67         started        70 schtasks.exe 49->70         started        72 conhost.exe 53->72         started        188 Uses ping.exe to sleep 61->188 74 SolaraExecutor.exe 61->74         started        77 SolaraExecutor.exe 61->77         started        79 conhost.exe 61->79         started        83 5 other processes 61->83 81 conhost.exe 63->81         started        signatures15 process16 file17 198 Uses ping.exe to sleep 67->198 85 SolaraExecutor.exe 67->85         started        89 conhost.exe 67->89         started        91 chcp.com 67->91         started        93 PING.EXE 67->93         started        164 C:\Users\user\AppData\...\WaLgZnI2HAES.bat, DOS 74->164 dropped 200 Hides that the sample has been downloaded from the Internet (zone.identifier) 74->200 95 cmd.exe 74->95         started        97 schtasks.exe 74->97         started        166 C:\Users\user\AppData\...\gNr7easjRlXv.bat, DOS 77->166 dropped 99 cmd.exe 77->99         started        101 schtasks.exe 77->101         started        signatures18 process19 file20 160 C:\Users\user\AppData\...\jj151P4UDC4R.bat, DOS 85->160 dropped 212 Hides that the sample has been downloaded from the Internet (zone.identifier) 85->212 103 cmd.exe 85->103         started        106 schtasks.exe 85->106         started        214 Uses ping.exe to sleep 95->214 108 SolaraExecutor.exe 95->108         started        111 conhost.exe 95->111         started        113 chcp.com 95->113         started        115 PING.EXE 95->115         started        117 conhost.exe 97->117         started        121 3 other processes 99->121 119 conhost.exe 101->119         started        signatures21 process22 file23 216 Uses ping.exe to sleep 103->216 123 SolaraExecutor.exe 103->123         started        127 conhost.exe 103->127         started        129 chcp.com 103->129         started        131 PING.EXE 103->131         started        133 conhost.exe 106->133         started        135 Conhost.exe 106->135         started        170 C:\Users\user\AppData\...\oq0VIYZ81XuR.bat, DOS 108->170 dropped 218 Hides that the sample has been downloaded from the Internet (zone.identifier) 108->218 137 cmd.exe 108->137         started        139 schtasks.exe 108->139         started        signatures24 process25 file26 168 C:\Users\user\AppData\...\5LZlENu9CyJp.bat, DOS 123->168 dropped 220 Hides that the sample has been downloaded from the Internet (zone.identifier) 123->220 141 cmd.exe 123->141         started        144 schtasks.exe 123->144         started        222 Uses ping.exe to sleep 137->222 146 conhost.exe 137->146         started        148 chcp.com 137->148         started        150 PING.EXE 137->150         started        152 conhost.exe 139->152         started        signatures27 process28 signatures29 224 Uses ping.exe to sleep 141->224 226 Drops executables to the windows directory (C:\Windows) and starts them 141->226 154 conhost.exe 144->154         started        process30
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2024-08-03 18:23:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nkv64vjkkmgwhpnlyawl4vyu7s36d6oie2wlbmt22jt5kadfzwxq._file
Verdict:
malicious
Similar samples:
07412fb8708bdbd23115743c4856981eb03873b755d0fbd4ec7745a642dff25c
QuasarRAT
17abf2eb5bfc5f1be41bbba2e0b1cb59787e3879d152bf6ff9b4d91702a402c4
QuasarRAT
30c381a042e571d4d749f7aff6e1b17d77100ad35368c9a67136c1b5436c79cb
QuasarRAT
f72153dbb753423e630840ed3674c6a0ce27b4ff5d1790a5bbb6d5707f9ed41e
QuasarRAT
f99ecbd9f26048dbb962f1711199e5f5d00ac8bbd87f539dd5a99631a15fadba
QuasarRAT
fef41f0e605a109f64d8078ad0bb3813b39f562a90c63449120bae59be131284
QuasarRAT
+ 753 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 discovery spyware trojan
Link:
https://tria.ge/reports/240803-w1gb6swbnb/
Behaviour
Runs ping.exe
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
System Network Configuration Discovery: Internet Connection Discovery
Drops file in System32 directory
Checks computer location settings
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
nohchy-47404.portmap.host:47404
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/644c510a-52cf-4415-8f20-0e6d8af8c988
Unpacked files
SH256 hash:
6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf
MD5 hash:
3cf4f19b7c69135acb3c4c9bb9cdfb90
SHA1 hash:
e2b5a40dd2abfa03671fde7c4e74f9b2846f989f
Detections:
QuasarRAT
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
win_quasarrat_j2
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
Link:
https://www.unpac.me/results/bea05fc2-ff19-4e6b-b870-f67bd82bfd77/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6aabee552a53/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/6aabee552a530d63bdabc02cbe5714fcb7e1f9c826acb0b27ad267d50065cdaf

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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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 artifacts 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
Description:Detects QuasarRAT malware
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
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_RID2E1E
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RC6_Constants
Create hunting rule
Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_803feff4
Create hunting rule
Author:Elastic Security
Rule name:win_quasar_rat_client
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments