MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2. 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: 12


Intelligence 12 IOCs YARA 17 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2
SHA3-384 hash: 44fb1e2ddb761df032585bdc1950df3c378173c33e0d0b7743eb6d541e945e05b7d17b9a69160e23487eaaed8d1f5c86
SHA1 hash: 42ee99f79b98124e4623fc7eb2ba2b5024f94e64
MD5 hash: 082ee775054ac39fbafffcd936d4e18d
humanhash: kentucky-kansas-mirror-two
File name:Client.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'020'352 bytes
First seen:2025-11-23 00:05:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:SnnTGpBuHYSWeWBRYRR1qJvHIPbcNE0KKSb7yviUSQaBaOwIRxl2S62/9RwjBdM7:Yi7YReEwKKSb7L3wip6mwbMNnA7FUe
TLSH T19195AF243AEA401EF1B7AF75D7D0B5CA8A7EF2237606965E149503460E23B41FDC723A
TrID 58.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
13.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
8.4% (.EXE) Win64 Executable (generic) (10522/11/4)
5.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
Reporter Hexastrike
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
11
Origin country :
IE IE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Client.exe
Verdict:
Malicious activity
Analysis date:
2025-11-23 09:01:44 UTC
Tags:
uac
Link:
https://app.any.run/tasks/e645707e-4720-41b7-899f-26ecfd02e006

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/39775/
Detection(s):
Win.Malware.Generic-9883083-0
Create hunting rule

Win.Malware.Bulz-9933026-0
Create hunting rule

Win.Malware.Generic-6623004-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=692260a7140de26f6c2c676a
Tags:
emotet packed virus micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
DNS request
Connection attempt
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 hacktool obfuscated packed privilege quasarrat reconnaissance
Link:
https://www.filescan.io/uploads/69225aceeecb08e4aa452b90/reports/3bd0d113-962f-4813-a328-47bfb731c5cf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2
Result
Gathering data
Gathering data
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2
Verdict:
inconclusive
YARA:
11 match(es)
Tags:
.Net Executable Fody/Costura Packer Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.16 SOS: 0.18 SOS: 0.20 SOS: 0.22 SOS: 0.23 SOS: 0.25 SOS: 0.26 SOS: 0.27 SOS: 0.29 SOS: 0.32 SOS: 0.34 SOS: 0.35 SOS: 0.62 Win 32 Exe x86
Link:
https://app.malva.re/file/082ee775054ac39fbafffcd936d4e18d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-11-13 02:03:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
26 of 36 (72.22%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w3ltphkcxaxw4okdqn5djj2jg3zdbtp3wp7s2gprkf2gmsjk67ba._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
execution persistence
Link:
https://tria.ge/reports/251123-a8a98sgn4y/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Suspicious use of NtSetInformationThreadHideFromDebugger
Executes dropped EXE
Verdict:
Malicious
Tags:
Win.Malware.Generic-9883083-0
YARA:
n/a
Link:
https://app.threat.zone/submission/6eff59ec-f34a-44a6-81ab-9b9c284066d6
Unpacked files
SH256 hash:
b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2
MD5 hash:
082ee775054ac39fbafffcd936d4e18d
SHA1 hash:
42ee99f79b98124e4623fc7eb2ba2b5024f94e64
Link:
https://www.unpac.me/results/55b21090-5d70-4489-b171-e9b08a3fe0d0/
SH256 hash:
52baff5ea0f63cf37ae0cc5a77504ee22491cefb4e61a51c1b4d157511916c35
MD5 hash:
839dd924eb6e9e5672d79241c8ae292d
SHA1 hash:
c191c6ee754956190667ad971f8abfaed8eacc92
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/55b21090-5d70-4489-b171-e9b08a3fe0d0/
Parent samples :
e553c34b8aabb6ad42dfdb8a77759b32c6c035f2fc82618eefa2261c71dee761
62e2c7d860a0e3e0975c5b9da5193f9ab3ca6c56ef4eea46d17cc87ac4598b90
eb72d6dd2158ce9ad453f8ecfd5d6900cce588c196ae5806268cbaf3475848da
6e6e691a7f98fc4086f2bec28b34b2474ab783e9408c611e789a00107a24c227
7e4fe2503e3dd2028c230f5e0413423f1dbbcbda01a252d22c8ece243979e927
4f831bfdd5b3ab7f4194b6fd391cac71b70ba7ced3489eb2bdf78170eb1214e9
b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2
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/b6d7379d42b82f6e3943837a34a74936f230cdfbb3ff2d19f1517466492af7c2

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:cobalt_strike_beacon_detected
Create hunting rule
Author:0x0d4y
Description:This rule detects cobalt strike beacons.
Rule name:Costura_Protobuf
Create hunting rule
Author:@bartblaze
Description:Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.
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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:INDICATOR_EXE_Packed_Fody
Create hunting rule
Author:ditekSHen
Description:Detects executables manipulated with Fody
Rule name:Indicator_MiniDumpWriteDump
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references
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:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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)

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/39775/

Comments