MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2. 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 21 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2
SHA3-384 hash: 561ad3fd5fdc41d9fc4d390d80eb800c14456fbe742ab0d749ac8d8548cbaa8bbbb287182da540700b9fe355d067c69f
SHA1 hash: 31d7b7aee638dfdbfb2e2f009d27ad30637f5953
MD5 hash: 4ebd63449193b8fdbd0c0315f8e33e10
humanhash: winner-single-spring-zulu
File name:4ebd63449193b8fdbd0c0315f8e33e10
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'033'088 bytes
First seen:2024-07-20 00:22:10 UTC
Last seen:2024-07-20 14:03:53 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 49152:yPXGSVuFey6JK1TGcbEtiAobDv4Rza32ehyfT:yPXdw6JkTGcbEEA
Threatray 717 similar samples on MalwareBazaar
TLSH T171E57B143BFC5E27E16E8B72A5B0401293F1F81AF3A7DB4F6191A27A1D53B40AD412B7
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 zbetcheckin
Tags:32 exe QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
486
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
amadey
Create hunting rule
ID:
1
File name:
1526d5952d7956238a435ebb8737abdd40736309ffd533cdd21105ae9fd1ceef.exe
Verdict:
Malicious activity
Analysis date:
2024-07-19 23:33:59 UTC
Tags:
amadey botnet stealer loader metastealer redline stealc zharkbot lumma proxy evasion phishing telegram python smokeloader miner pastebin quasar xmrig upx
Link:
https://app.any.run/tasks/9fd1eb5c-84e7-4014-b4a7-38d8d96f4468

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Malware.Bulz-9823462-0
Create hunting rule

Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Msilheracles-9900242-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.QuasarStealer.UNOFFICIAL
Create hunting rule

Win.Packed.Downeks-6898097-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=669b03672f6eaff4b90eef25
Tags:
Discovery Execution Generic Infostealer Network Stealth Trojan Heur
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm certreq crypto expand explorer hook infostealer keylogger lolbin quasarrat rat remote schtasks stealer stealer
Link:
https://www.filescan.io/uploads/669b0366a537d9330be04273/reports/d419e93b-c28c-48ff-9d67-6e503d9208b1/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2
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/99238602-2db5-4691-8df5-8f3e7afd0114
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1477111
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Drops PE files with benign system names
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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: Files With System Process Name In Unsuspected Locations
Sigma detected: Potentially Suspicious Malware Callback Communication
Sigma detected: Schedule system process
Sigma detected: System File Execution Location Anomaly
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses known network protocols on non-standard ports
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: 1477111 Sample: kz7iLmqRuq.exe Startdate: 20/07/2024 Architecture: WINDOWS Score: 100 39 tools.keycdn.com 2->39 41 api.proxyscrape.com 2->41 43 api.ipify.org 2->43 57 Snort IDS alert for network traffic 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 16 other signatures 2->63 9 kz7iLmqRuq.exe 5 2->9         started        13 kz7iLmqRuq.exe 2 2->13         started        signatures3 process4 file5 35 C:\Users\user\AppData\Roaming\...\svchost.exe, PE32 9->35 dropped 37 C:\Users\user\AppData\...\kz7iLmqRuq.exe.log, CSV 9->37 dropped 65 Uses schtasks.exe or at.exe to add and modify task schedules 9->65 67 Drops PE files with benign system names 9->67 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->69 15 svchost.exe 2 9->15         started        19 schtasks.exe 1 9->19         started        21 schtasks.exe 1 9->21         started        signatures6 process7 dnsIp8 45 72.37.216.68, 4145, 49814 ZEROLAGUS United States 15->45 47 93.158.155.18, 49766, 80 YANDEXRU Russian Federation 15->47 49 98 other IPs or domains 15->49 51 System process connects to network (likely due to code injection or exploit) 15->51 53 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->53 55 Installs a global keyboard hook 15->55 23 schtasks.exe 1 15->23         started        25 schtasks.exe 1 15->25         started        27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        signatures9 process10 process11 31 conhost.exe 23->31         started        33 conhost.exe 25->33         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2
Detection:
quasar
Create hunting rule
Link:
https://mwdb.cert.pl/sample/7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2024-07-19 23:26:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=puq3xpft4d3qtxjvdqpnytks56xi3ihn6narehaxu3h3dkpmy6za._file
Verdict:
malicious
Similar samples:
00e3eebe4bbea52843a8d335bdf5e4b5d6c8de8079f8d86a345cceb2375ccb25
QuasarRAT
0ef4667fb2bd5b2184048913181bd7b03bf63d0e7959214b879efa4d6b75ad5d
QuasarRAT
15d27a6eed07fe1747835df49e88fd803cdb0518761a4eafc11c694b5a87ecb9
QuasarRAT
58ed54c59f857cd80bcf4e49b164b812663ae6dce30c39dfde96e5fb69bd7e39
QuasarRAT
7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2
QuasarRAT
bf45d7d41cf421da9cf70d0616d2e2ed599829a190fbfc6b6fd1170cecc5657a
QuasarRAT
+ 707 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:proxy spyware trojan
Link:
https://tria.ge/reports/240720-apgb5s1fjh/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Looks up external IP address via web service
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
45.66.231.154:45764
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f7727f39-1049-4a43-bd48-0405e5dff40f
Unpacked files
SH256 hash:
7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2
MD5 hash:
4ebd63449193b8fdbd0c0315f8e33e10
SHA1 hash:
31d7b7aee638dfdbfb2e2f009d27ad30637f5953
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/7d7be828-4f0c-4d8a-b717-1f297f03c331/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/7d21bbbcb3e0/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/7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2

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: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.

Web download

QuasarRAT

Executable exe 7d21bbbcb3e0f709dd351c1edc4d52efae8da0edf341121c17a6cfb1a9ecc7b2

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3053533/

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


Avatar
zbet commented on 2024-07-20 00:22:11 UTC

url : hxxp://185.196.10.57/selectex-file-host/svchost.exe