MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 048a6a3038dcfa51af0124c7c137746aad2c8641aa328577455bc97b091201de. 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
| SHA256 hash: | 048a6a3038dcfa51af0124c7c137746aad2c8641aa328577455bc97b091201de |
|---|---|
| SHA3-384 hash: | 197f4af8cb03c765dac0cb0c0ecb0675c10e62c138fb16dceb6399714bdbbd2d6fb35163ac05ea96de9e23675e24fe3b |
| SHA1 hash: | 4de0d4a2ee5deb369a522b04f4f89dcb4c40b569 |
| MD5 hash: | e7d38998cacdd66088f1fab9ee449916 |
| humanhash: | nine-orange-connecticut-item |
| File name: | Client.exe |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 1'188'864 bytes |
| First seen: | 2025-11-22 23:49:27 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 24576:GurYhuGB2JVl3AS2HIPbcNE0KKzaOwIRxl2SR82Zl:GQYhuGB2JVl3iEwKKzwipm4 |
| TLSH | T172457E2039EA801AF1BBAFB5EBD475DB8A7EF123360A965D159103460E12B41FDC713E |
| 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 :
38
Origin country :
IEVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Client.exe
Verdict:
No threats detected
Analysis date:
2025-11-23 00:45:50 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
96.5%
Tags:
packed virus remo
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Launching a service
DNS request
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm base64 hacktool obfuscated packed privilege quasarrat reconnaissance
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-04T11:22:00Z UTC
Last seen:
2025-11-05T05:35:00Z UTC
Hits:
~10
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
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: 0.32 SOS: 0.34 SOS: 0.62 Win 32 Exe x86
Threat name:
Win32.Backdoor.FormBook
Status:
Malicious
First seen:
2025-11-06 02:38:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
27 of 36 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
7/10
Tags:
execution persistence
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
Unpacked files
SH256 hash:
048a6a3038dcfa51af0124c7c137746aad2c8641aa328577455bc97b091201de
MD5 hash:
e7d38998cacdd66088f1fab9ee449916
SHA1 hash:
4de0d4a2ee5deb369a522b04f4f89dcb4c40b569
SH256 hash:
e891c3702edeae8e9eb3950c6bf7779b27b0be239cc769f64404c782ec45f054
MD5 hash:
363d4adc1f141288a796e38843ee1cba
SHA1 hash:
eba242776305aeb448bf1cc02c1ec7eca24ad0d1
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
HKTL_NET_GUID_Quasar
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
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: | Costura_Protobuf |
|---|---|
| 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 |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerCheck__QueryInfo |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerHiding__Thread |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DetectEncryptedVariants |
|---|---|
| Author: | Zinyth |
| Description: | Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded |
| Rule name: | Detect_PowerShell_Obfuscation |
|---|---|
| Author: | daniyyell |
| Description: | Detects obfuscated PowerShell commands commonly used in malicious scripts. |
| Rule name: | INDICATOR_EXE_Packed_Fody |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables manipulated with Fody |
| Rule name: | Indicator_MiniDumpWriteDump |
|---|---|
| Author: | Obscurity Labs LLC |
| Description: | Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| 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.
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