MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188. 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: 17


Intelligence 17 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188
SHA3-384 hash: a9a20d6d45cdace1c8e6d32d67a290afcf5d37b0bea1ee19834e6fda2b49475416775094ed93a0f380b1f1b684bdcb5a
SHA1 hash: e250949b96260df94f7c4cce9ef009069690ffe6
MD5 hash: c9951fb84a416c1f329b39b2da482348
humanhash: winter-kansas-oxygen-lemon
File name:RFQ 9-XTC-204-60THD.xlsx.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:146'432 bytes
First seen:2024-12-03 13:09:20 UTC
Last seen:2025-01-10 14:31:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 3072:IODxM5DNveAHHY+axlCTo0JLsLbJo9LdtxAuAqdES0m5kJ8QvT5+hM94K2icI7y:IO9M5DNveAHHY+clCU0JLsLb+9LdtxAN
Threatray 2'871 similar samples on MalwareBazaar
TLSH T12CE3D77E6B850837D896CB37A4B31F625773C298E747D30A12E5A9BC1CA7B911DB0360
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter abuse_ch
Tags:exe purecrypter QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
412
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
RFQ9-XTC-204-60THD.xlsx.exe
Verdict:
Malicious activity
Analysis date:
2024-12-03 13:23:29 UTC
Tags:
rat quasar remote purecrypter netreactor
Link:
https://app.any.run/tasks/70d9277c-e36d-4a14-b3da-1faded8f8173

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=674f040712e85e185e754dce
Tags:
underscore autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Connection attempt to an infection source
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file in the %AppData% directory
Launching a process
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed phishing smartassembly smart_assembly
Link:
https://www.filescan.io/uploads/674f03351b2b810869e0ec79/reports/dce2b3ef-5b4a-4051-8d98-436e3e5f98d4/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/9fed7bcd-cb14-4683-b6a3-4878657e02ad
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1567424
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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: Drops script at startup location
Sigma detected: Suspicious Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1567424 Sample: RFQ 9-XTC-204-60THD.xlsx.exe Startdate: 03/12/2024 Architecture: WINDOWS Score: 100 29 ert43w221.ydns.eu 2->29 31 www.oleonidas.gr 2->31 33 4 other IPs or domains 2->33 51 Suricata IDS alerts for network traffic 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 16 other signatures 2->57 8 RFQ 9-XTC-204-60THD.xlsx.exe 15 5 2->8         started        13 wscript.exe 1 2->13         started        signatures3 process4 dnsIp5 35 oleonidas.gr 185.78.221.73, 443, 49712, 49777 IPHOSTGRIpDomainGR Greece 8->35 23 C:\Users\user\AppData\...\RealErrorObject.exe, PE32 8->23 dropped 25 C:\...\RealErrorObject.exe:Zone.Identifier, ASCII 8->25 dropped 27 C:\Users\user\AppData\...\RealErrorObject.vbs, ASCII 8->27 dropped 59 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->59 61 Writes to foreign memory regions 8->61 63 Injects a PE file into a foreign processes 8->63 15 InstallUtil.exe 15 2 8->15         started        65 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->65 19 RealErrorObject.exe 14 2 13->19         started        file6 signatures7 process8 dnsIp9 37 ert43w221.ydns.eu 69.174.99.131, 49759, 6298 ASN-QUADRANET-GLOBALUS United States 15->37 39 ipwho.is 103.126.138.87, 443, 49771 AS40676US United States 15->39 41 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->41 43 Multi AV Scanner detection for dropped file 19->43 45 Machine Learning detection for dropped file 19->45 47 Writes to foreign memory regions 19->47 49 Injects a PE file into a foreign processes 19->49 21 InstallUtil.exe 3 19->21         started        signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2024-12-03 07:31:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3zvtm6slhka75id43kuua243ocuziwa47lstt5o2iqjgrzf6igea._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
02f0a7f184fcdaaa4d9a46ca29712c8daae0a46d2038bd362dc818025df8d553
QuasarRAT
4e6e48275b1f3412edc045e1a81d509ddcfe360c06bdd4483fcd5b4fc77b7ef3
QuasarRAT
56bd84e77da1de080c2d5c42b6f101574e7146b200026ea9468703d742edec10
QuasarRAT
7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35
QuasarRAT
a2b66f9f80d2add5e7b13f9e75b6c964e53d7aa2e52065b469b83f7e7c31fa7c
QuasarRAT
b4a61a178dfda52928802e1189f3bf1bef1c03aecf6b6fc99d2a3713f3d5e202
QuasarRAT
b70b64872a21f338463d0e6b1f2a45bb186ad711317164192b64e54a19baef85
QuasarRAT
error
QuasarRAT
+ 2'861 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:chi discovery spyware trojan
Link:
https://tria.ge/reports/241203-qeenkawraz/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Quasar RAT
Quasar family
Quasar payload
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
ert43w221.ydns.eu:6298
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/da8096ae-904e-4520-8378-8d04551cc1f1
Unpacked files
SH256 hash:
de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188
MD5 hash:
c9951fb84a416c1f329b39b2da482348
SHA1 hash:
e250949b96260df94f7c4cce9ef009069690ffe6
Detections:
PureCrypter_Stage1
Create hunting rule
Link:
https://www.unpac.me/results/007b72ca-4f84-4f78-ada5-2a40fad37f24/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/de6b367a4b3a/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188

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_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

QuasarRAT

Executable exe de6b367a4b3a81fea07cdaa9406b9b70a994581cfae539f5da441268e4be4188

(this sample)

QuasarRAT

DLL dll ea4d2fb2d6868db36ff567d83b9f94f441697a62c81e7d3054385a508ec2491c

  
Dropping
SHA256 ea4d2fb2d6868db36ff567d83b9f94f441697a62c81e7d3054385a508ec2491c
  
Dropping
MD5 411d1d80bf27bf78ce7d328cddfd6068

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 (GUARD_CF)high

Comments