MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383
SHA3-384 hash: 13e271afa1fdf4dc8cf9b1288816f8c3f019c977d89b0593f6eca4cd89f13b62d09b0c5360dd443bee68804bb36b5427
SHA1 hash: 92b52e3be58cf4f2baf89a12857fd9eb6375a0fe
MD5 hash: d5a56772552ede492b7cdbe436ead868
humanhash: jupiter-lithium-sweet-pluto
File name:d5a56772552ede492b7cdbe436ead868.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'961'984 bytes
First seen:2025-08-12 07:19:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 24576:d3JJy5Z9RyVHYIWuKBRi+hQRNfcHqIEre7dUFKGxr0OVt1roCYGXNL8Tf8LWzDkI:Lai3GBRJhuNfURQK6BL5oy9L8YLW3ff
Threatray 171 similar samples on MalwareBazaar
TLSH T1E39533613FB5A4C0FC428A710BE86D7324B5138517AEBEC55A626F2895F138138F7B72
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 QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
44
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d5a56772552ede492b7cdbe436ead868.exe
Verdict:
Malicious activity
Analysis date:
2025-08-12 07:28:28 UTC
Tags:
auto-startup crypto-regex
Link:
https://app.any.run/tasks/8a9fec17-7d12-4a5d-b9a9-51754b4d20c8

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/20291/
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=689aeb51fca70bd90e8eb7b7
Tags:
vmdetect autorun quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Сreating synchronization primitives
Setting a keyboard event handler
Connection attempt
Creating a file
Sending a custom TCP request
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin obfuscated packed update
Link:
https://www.filescan.io/uploads/689aeb642fbe0788fb1e1475/reports/7890bf36-5b56-4c17-9668-b6d5172a1d05/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cefba782-740e-48ef-826c-d640da5ae8d7
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1755108
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops PE files to the startup folder
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1755108 Sample: WZsRo3y5os.exe Startdate: 12/08/2025 Architecture: WINDOWS Score: 100 38 ipwho.is 2->38 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Antivirus detection for dropped file 2->48 50 9 other signatures 2->50 8 WZsRo3y5os.exe 6 2->8         started        12 update.exe 4 2->12         started        signatures3 process4 file5 28 C:\Users\user\AppData\Roaming\...\update.exe, PE32 8->28 dropped 30 f420a988-fe6b-452f-ac12-dae99e160dc0.exe, PE32 8->30 dropped 32 C:\Users\user\...\update.exe:Zone.Identifier, ASCII 8->32 dropped 34 C:\Users\user\AppData\...\WZsRo3y5os.exe.log, CSV 8->34 dropped 52 Drops PE files to the startup folder 8->52 54 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->54 56 Adds a directory exclusion to Windows Defender 8->56 14 f420a988-fe6b-452f-ac12-dae99e160dc0.exe 14 12 8->14         started        18 powershell.exe 23 8->18         started        36 c54edbfd-0007-4438-b24c-9a139ac11cae.exe, PE32 12->36 dropped 20 c54edbfd-0007-4438-b24c-9a139ac11cae.exe 3 12->20         started        22 powershell.exe 12->22         started        signatures6 process7 dnsIp8 40 5.44.41.14, 49686, 49694, 8848 ASN-QUADRANET-GLOBALUS Russian Federation 14->40 42 ipwho.is 15.204.213.5, 443, 49693, 49695 HP-INTERNET-ASUS United States 14->42 58 Antivirus detection for dropped file 14->58 60 Multi AV Scanner detection for dropped file 14->60 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->62 64 Installs a global keyboard hook 14->64 66 Loading BitLocker PowerShell Module 18->66 24 conhost.exe 18->24         started        26 conhost.exe 22->26         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
.Net Executable PE (Portable Executable) SOS: 0.51 Win 32 Exe x86
Link:
https://app.malva.re/file/d5a56772552ede492b7cdbe436ead868
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383/
Verdict:
Malicious
Threat:
Trojan.MSIL.Quasar
Link:
https://tip.neiki.dev/file/3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383
Threat name:
Win32.Backdoor.Quasar
Create hunting rule
Status:
Suspicious
First seen:
2025-08-07 02:28:39 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hyzw5525xnwxc2h4fxf44sqtty6chsrl45czwegaaugk3ethuobq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
280f78a77f4bc4fc98ea7d35168446c7e83fba78e467b0aff8edbba9ba8af210
QuasarRAT
3637ca34ceee7b2a404aad80b80ac2e5da7ec008f03d55fa2ad662f5c93378f3
QuasarRAT
3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383
QuasarRAT
517a1f946ddd3d532ba53b7b0b8da56b05516415a75aca02de9844a054997c4d
QuasarRAT
96e304563b32ec8a6de1d8b990164db92a1191ba13725384bc2e32b54b5633f1
QuasarRAT
error
QuasarRAT
fc53884a4452b6f808e280dc3fc3a051d0129be2aabf61ea816dacf6c3ea9e80
QuasarRAT
+ 161 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:vivarat execution spyware trojan
Link:
https://tria.ge/reports/250812-h5986awn19/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops startup file
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
5.44.41.14:8848
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/b6a41e98-0eeb-4565-b1e4-d79dd8fe73bb
Unpacked files
SH256 hash:
3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383
MD5 hash:
d5a56772552ede492b7cdbe436ead868
SHA1 hash:
92b52e3be58cf4f2baf89a12857fd9eb6375a0fe
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
0fd3b2fdb2d090d2d4be8119e5b27d29d233556ab64b593ad3b0442533e515c0
MD5 hash:
c1b7452550988b4ccecac6f5c9820b95
SHA1 hash:
751c4a6d75eb5372ac0c3b51d9fb5bda852155f4
Detections:
QuasarRAT
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
MAL_BackNet_Nov18_1
Create hunting rule
INDICATOR_EXE_Packed_Fody
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
d5235265564f0bfd23b7279d7bdccc9ea6383ed07c5d0bfdf6c99029af9a2c0c
MD5 hash:
1d3dd9fcc077e6b4f88c05b9aef53ee6
SHA1 hash:
12b33858bc84f54b8aa8dbcb5a0ec2da043a6f66
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
1fd139dfd20fafdf16191c58ab20546144ec1385fa47501d8e7ca15cb6d93b34
MD5 hash:
35b683f6c24bc693a4333318442724cf
SHA1 hash:
25ad4ae0aba6c4496123a28513aef37cab9198d5
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
bbec3ffe9f209ae5642ee6a7a5020bb41afffa5b97e45637780c227affc64f59
MD5 hash:
5d2eaffea7a9b8fe929c54a05dd2f2a2
SHA1 hash:
3438adf484e0329b21767cff95146532378ae15a
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
HKTL_NET_GUID_Quasar
Create hunting rule
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
4c9615496970ea84320e2a6e99f8fb828e3c7790384df5585d93fc368885d94e
MD5 hash:
50e6524b7ee9c2c93f5210b63cb1ca54
SHA1 hash:
3e296ec3bb24750833ea80515e6fb4c73874c91a
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
c9736bed57d137a0bd4a454a70436020312db5a365bdd243037e766695c18ccd
MD5 hash:
41b34eab1585d5381c56730b93dd1310
SHA1 hash:
510b640517342dbcc40c81b63db23fa1444a71ed
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
SH256 hash:
ceed689891874eed41295189b2db3c187aabcfc90add5a1d2af96f078bcb4811
MD5 hash:
026a5bafe4ac686c01e9d56e00a87ab1
SHA1 hash:
a6ff2228e8114a2b4040d0ca137c4b544ff034f4
Link:
https://www.unpac.me/results/ade73186-3257-40f8-9174-ceac23942cfa/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3e336ef75dbb/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/3e336ef75dbb6d7168fc2dcbce4a139e3c23ca2be7459b10c0050cad9267a383

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:NETexecutableMicrosoft
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
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:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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/20291/

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