MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02. 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: 18


Intelligence 18 IOCs YARA 19 File information Comments
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SHA256 hash: ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02
SHA3-384 hash: b45e11af2f14b6b472a71fd4a7e810fc829b23024c96adfa49eeaa55139a08ed1dbd54579486aaf59ef01c22c730f53a
SHA1 hash: d6f325b74f5b85fafaf1ec980dc8b1709a0a70dd
MD5 hash: 61fbd04302aec7353571dc0a9324c3e4
humanhash: harry-low-cola-alpha
File name:Client.exe
Download: download sample
Signature QuasarRAT
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File size:3'270'144 bytes
First seen:2024-01-15 21:13:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 49152:Cv3I22SsaNYfdPBldt698dBcjHYLqkbR4LoGdvJbTHHB72eh2NT:Cv422SsaNYfdPBldt6+dBcjHYLqT
TLSH T114E55B1437F85F23E1BBE27396B0041267F0EC1AB3A3FB4B658167791C93B505941AAB
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)
File icon (PE):PE icon
dhash icon 27197d656d651be4 (1 x QuasarRAT)
Reporter smica83
Tags:exe HUN QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
394
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
quasar
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ID:
1
File name:
ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02.exe
Verdict:
Malicious activity
Analysis date:
2024-01-15 21:15:21 UTC
Tags:
quasar
Link:
https://app.any.run/tasks/4649eae7-631a-4f04-a89d-606d07b2a887

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/471000/
Detection(s):
Win.Malware.Generic-9883083-0
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Win.Malware.Msilheracles-9900242-0
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ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL
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Win.Packed.Downeks-6898097-0
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm certreq control crypto expand explorer hook infostealer keylogger lolbin quasar quasarrat rat remote replace schtasks stealer stealer
Link:
https://www.filescan.io/uploads/65a5a01bfd5068bbc3d67831/reports/6cc48b64-ef97-4a7d-829a-70ad9824ad1f/overview
Verdict:
Malicious
Labled as:
Trojan.MSIL.Quasar
Link:
https://www.hybrid-analysis.com/sample/ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/773da98b-4e8e-4172-b534-26ac8a5a7a04
Result
Threat name:
Quasar
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1375006
Signature
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
Sigma detected: Quasar
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: 1375006 Sample: Client.exe Startdate: 15/01/2024 Architecture: WINDOWS Score: 100 30 Found malware configuration 2->30 32 Malicious sample detected (through community Yara rule) 2->32 34 Antivirus / Scanner detection for submitted sample 2->34 36 6 other signatures 2->36 8 Client.exe 5 2->8         started        12 Client.exe 2 2->12         started        process3 file4 26 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 8->26 dropped 38 Uses schtasks.exe or at.exe to add and modify task schedules 8->38 40 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->40 14 Client.exe 2 8->14         started        18 schtasks.exe 1 8->18         started        signatures5 process6 dnsIp7 28 192.168.1.131, 4782 unknown unknown 14->28 42 Antivirus detection for dropped file 14->42 44 Multi AV Scanner detection for dropped file 14->44 46 Machine Learning detection for dropped file 14->46 48 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->48 20 schtasks.exe 1 14->20         started        22 conhost.exe 18->22         started        signatures8 process9 process10 24 conhost.exe 20->24         started       
Score:
92%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02
Detection:
quasar
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Link:
https://mwdb.cert.pl/sample/ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02/
Threat name:
ByteCode-MSIL.Trojan.Quasar
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Status:
Malicious
First seen:
2024-01-15 21:14:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vol7sddoowgajx6i4r4g7dx25zezwkhpr2wd4ijouzepuke6riba._file
Verdict:
malicious
Result
Malware family:
quasar
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Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Link:
https://tria.ge/reports/240115-z3atysfaem/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
192.168.1.131:4782
Unpacked files
SH256 hash:
ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02
MD5 hash:
61fbd04302aec7353571dc0a9324c3e4
SHA1 hash:
d6f325b74f5b85fafaf1ec980dc8b1709a0a70dd
Detections:
QuasarRAT
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malware_windows_xrat_quasarrat
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win_quasarrat_j2
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MALWARE_Win_QuasarStealer
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cn_utf8_windows_terminal
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INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
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MAL_QuasarRAT_May19_1
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INDICATOR_SUSPICIOUS_Binary_References_Browsers
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INDICATOR_SUSPICIOUS_GENInfoStealer
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Link:
https://www.unpac.me/results/15e95afa-ffc9-44b5-aacb-02e2f7389bfd/
Malware family:
QuasarRAT
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ab97f90c6e75/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/ab97f90c6e758c04dfc8e4786f8efaee499b28ef8eac3e212ea648fa289e8a02

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
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Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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
Create hunting rule
Author:ditekSHen
Description:Detects executables containing common artifacts observed in infostealers
Rule name:MALWARE_Win_QuasarStealer
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Author:ditekshen
Description:Detects Quasar infostealer
Rule name:MAL_QuasarRAT_May19_1
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Description:Detects QuasarRAT malware
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_RID2E1E
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Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
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:RC6_Constants
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Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
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Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
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Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
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Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:win_quasar_rat_client
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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.

Cape
Cape
https://www.capesandbox.com/analysis/471000/

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