MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba
SHA3-384 hash: 88cdcb1003c103cb94ea4275b8d9b8aae7f8b7330aaea7dc28e0810a17e781d05dacebc6d7b0f543193dbb906b60bfff
SHA1 hash: 16acd4ebc34e564063396743939f0efe7600f90d
MD5 hash: 255ab23022bc600d1fc6b15f273ebb3c
humanhash: oklahoma-zebra-fix-south
File name:tail.ps1
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:3'477'446 bytes
First seen:2026-02-09 13:22:09 UTC
Last seen:Never
File type:PowerShell (PS) ps1
MIME type:text/plain
ssdeep 24576:IePozcwoMimcThOhESjgoxLxH1M4qs3PncOAbeGfXzlwlZna0Vb8ldAePozcwoMu:nAmQp1VM9l4lkAmQp1VM9l4lW
Threatray 295 similar samples on MalwareBazaar
TLSH T12FF533825FBE7F7602AD933870BF4D19E2E20FA854619AD2B399C0DB2F5CB01554BC19
Magika powershell
Reporter smica83
Tags:ps1 QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
66
Origin country :
HU HU
Vendor Threat Intelligence
No detections
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6989dfc642fd65534ccddd18
Tags:
emotet shell sage smtp
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 evasive obfuscated svchost
Link:
https://www.filescan.io/uploads/6989df85981ff1d38a4e3d21/reports/dd921c4a-57b7-479b-882c-4616c90090f0/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba
Verdict:
Malicious
File Type:
unix shell
First seen:
2026-02-09T10:42:00Z UTC
Last seen:
2026-02-09T11:45:00Z UTC
Hits:
~10
Detections:
PDM:Trojan.Win32.Generic Trojan-PSW.Win32.Disco.sb Trojan.MSIL.Quasar.a HEUR:Trojan-Spy.MSIL.Agent.sb Backdoor.MSIL.Agent.sb Exploit.Win32.BypassUAC.sb Trojan.Win32.Quasar.sb UDS:DangerousObject.Multi.Generic Trojan.Win64.Agentb.sb Trojan.Win32.HTA.a PDM:Exploit.Win32.Generic Backdoor.MSIL.Crysan.d Trojan-PSW.Win32.Stealer.sb Trojan-PSW.MSIL.Stealer.sb Trojan-PSW.MSIL.Agent.sb Trojan.Win32.Shellcode.sb
Link:
https://opentip.kaspersky.com/58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba/results?tab=lookup
Result
Threat name:
DonutLoader
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1866074
Signature
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Sigma detected: Dot net compiler compiles file from suspicious location
Writes to foreign memory regions
Yara detected DonutLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1866074 Sample: tail.ps1 Startdate: 09/02/2026 Architecture: WINDOWS Score: 72 27 Malicious sample detected (through community Yara rule) 2->27 29 Yara detected DonutLoader 2->29 31 Joe Sandbox ML detected suspicious sample 2->31 33 Sigma detected: Dot net compiler compiles file from suspicious location 2->33 7 powershell.exe 36 2->7         started        process3 signatures4 35 Injects code into the Windows Explorer (explorer.exe) 7->35 37 Writes to foreign memory regions 7->37 10 csc.exe 3 7->10         started        13 csc.exe 3 7->13         started        15 conhost.exe 7->15         started        17 explorer.exe 24 1 7->17 injected process5 file6 23 C:\Users\user\AppData\Local\...\yp052zed.dll, PE32 10->23 dropped 19 cvtres.exe 1 10->19         started        25 C:\Users\user\AppData\Local\...\k2oyomlf.dll, PE32 13->25 dropped 21 cvtres.exe 1 13->21         started        process7
Score:
92%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba
Verdict:
Malware
YARA:
2 match(es)
Tags:
Base64 Block Contains Base64 Block DeObfuscated PowerShell
Link:
https://app.malva.re/file/255ab23022bc600d1fc6b15f273ebb3c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba/
Verdict:
Malicious
Threat:
Family.AGENTTESLA
Link:
https://tip.neiki.dev/file/58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba
Threat name:
Text.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2026-02-09 08:54:35 UTC
File Type:
Text (PowerShell)
AV detection:
5 of 24 (20.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ldwmd6vmqz4x74njqslmp2medy6eohfemkdfio5czwv3h7sxvo5a._file
Verdict:
malicious
Label(s):
donutloader
Create hunting rule
quasarrat
Create hunting rule
Similar samples:
0afa2d3579842ab2805c4f46a0d6401b8d0c48bf94df1b7573a5fcf20c7ef066
QuasarRAT
5249882063c9eefc16d3dcf0f00ecc6a52a4e47e4c01cd044d8678b7c32bb61d
QuasarRAT
5dd9cbc64e7414cc479191cbef353c9456d75579d6453157b5f696edeba2d8b5
QuasarRAT
8bedd9a6bc1b9fa0a9158352dae15181e354e187da8ea79c61418802d96b34b5
QuasarRAT
a0b1944382e2fdec5e5640f45b7841b95e9c93dfa3f4e4f02b603cf1f7e68222
QuasarRAT
c27e5eb9e88677550596d1678ce44d9b4f6dfa69751402e4a5986c297d7b9ef3
QuasarRAT
d797019b2ff011ae71e9e700e8f9a16cb463af646aae4815654ae79e09f59ceb
QuasarRAT
ea8d7f024d9d6a84127fe2873d556b7f97525b9815270633b8087b2c9e24389b
QuasarRAT
ebadac7a2fcf13d135c59215056896a5ebe91b442edd6acf12110c357956a143
QuasarRAT
error
QuasarRAT
fc791cea301af15a8c46dfd5ddf048fbc52cb694d5e9118c41363675823a328b
QuasarRAT
+ 285 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:donutloader family:quasar botnet:luma execution loader spyware trojan
Link:
https://tria.ge/reports/260209-qmxjcahs4c/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Detects DonutLoader
DonutLoader
Donutloader family
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
193.161.193.99:61262
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba

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:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telebot_framework
Create hunting rule
Author:vietdx.mb

File information

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

QuasarRAT

PowerShell (PS) ps1 58ecc1faac86797ff1a98496c7e9841e3c471ca46286543ba2cdabb3fe57abba

(this sample)

QuasarRAT

rar dfd7432d2e19067b096ccbb0aaab030bfb4dbc78f5cf6b6b5971e5f6871f7204

  
Dropping
SHA256 dfd7432d2e19067b096ccbb0aaab030bfb4dbc78f5cf6b6b5971e5f6871f7204
  
Dropping
MD5 fa8fdc6064f86f29fe4f8e4c1352f4ed

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