MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5. 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 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5
SHA3-384 hash: 11933ce8e3d27480ef1aff417413e62de71412a5d1b9bd540ecfca6cb529eb9053214702a1e9635aeddc86bb3c2fe4ef
SHA1 hash: 14adf31bd5c76ff9b696fb3fdc161f2e0d31ca91
MD5 hash: 95430cf0fa4bd633605eabf8f46ef895
humanhash: north-spaghetti-wisconsin-beer
File name:test418.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:8'192 bytes
First seen:2025-04-18 16:44:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 96:uRt3R9Kve7Op0uSbgbgj2d3Xa6N+uxZVHrIhx5UICJlOLtlUn3lafzNt:MP/7OuuS8Mj2ZXa8h0h2lOLXUnsJ
TLSH T134F10800EBD84336D8BA4B71B8A34352A231FB04E4378F1E199D624B2E6335509A3775
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 juroots
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
452
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
test418.exe
Verdict:
Malicious activity
Analysis date:
2025-04-18 17:23:35 UTC
Tags:
loader rat quasar remote evasion
Link:
https://app.any.run/tasks/c5e34c32-d3a8-464d-960b-b66f929126d9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/2898/
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.360.29953.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6802870a2203b3e10cd126ce
Tags:
extens trojan remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt
Sending an HTTP GET request
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm evasive expand explorer infostealer keylogger lolbin obfuscated obfuscated quasarrat rat reconnaissance remote runonce stealer stealer
Link:
https://www.filescan.io/uploads/680281ac90767142c3daf482/reports/6979c52f-6398-491d-b390-58a69800353b/overview
Verdict:
Malicious
Labled as:
Bulz.Generic
Link:
https://www.hybrid-analysis.com/sample/b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/87a4ace5-413b-4f10-b5bf-12b48492d07f
Result
Threat name:
AsyncRAT, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1668579
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Yara detected AsyncRAT
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Score:
94%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2025-04-18 16:45:37 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=wndtjocrc3bggegkrp7bgr2xprluvmvh3jgvuppe36dksm5he22q._file
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/250418-t9mt7sskx2/
Behaviour
Suspicious use of AdjustPrivilegeToken
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/6bd1e6f1-ccc1-4624-ac15-d7153836ab7d
Unpacked files
SH256 hash:
b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5
MD5 hash:
95430cf0fa4bd633605eabf8f46ef895
SHA1 hash:
14adf31bd5c76ff9b696fb3fdc161f2e0d31ca91
Link:
https://www.unpac.me/results/9ebe044f-b94c-4678-bd79-d8c166b3a35d/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b34734b85116/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Quasar
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/b34734b85116c26310ca8bfe1347577c574ab2a7da4d5a3de4df86a933a726b5

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/2898/

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