MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 b9b51e29d004739a401a3628bd5b48cccb9bfa5bbc67dbacd3be197a5be32285. 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: 15
| SHA256 hash: | b9b51e29d004739a401a3628bd5b48cccb9bfa5bbc67dbacd3be197a5be32285 |
|---|---|
| SHA3-384 hash: | 49b2afefa087891ea3f45b7e7d3575a1e01f608bc85e577c4e40c22a259b51c6fff9c51b92b0fe16c3968206f74329fb |
| SHA1 hash: | 1be457e4917560cf3f028adaf759a315a8e40894 |
| MD5 hash: | 75c3b29dd351228bab20770474e8f93a |
| humanhash: | apart-chicken-high-bakerloo |
| File name: | file |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 646'656 bytes |
| First seen: | 2026-03-07 05:19:38 UTC |
| Last seen: | 2026-03-07 06:45:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'829 x AgentTesla, 19'759 x Formbook, 12'295 x SnakeKeylogger) |
| ssdeep | 12288:cPRb9qoSjkqjVnl36ud0zR/6CtQ9PUHIG8Dl8gSD+37PWY1Y1+f7LfNLi03nI4:cJ9mjkqjVnlqud+/2P+AlUDcPt1aKFLp |
| Threatray | 10 similar samples on MalwareBazaar |
| TLSH | T169D4122037FC8107F1BF6A7989F221016676FA63A623D74D1D9462BD4533742A9C33BA |
| TrID | 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.2% (.EXE) Win64 Executable (generic) (6522/11/2) 4.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.3% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| Reporter |  Bitsight |
| Tags: | dropped-by-amadey exe fbf543 QuasarRAT |
Intelligence
File Origin
# of uploads :
13
# of downloads :
152
Origin country :
USVendor Threat Intelligence
Malware configuration found for:
QuasarRAT
Details
QuasarRAT
c2 socket addresses, a version, a mutex, AES-CBC decryption parameters, a missionid, an interval, varying flags, a filepath, an installation registry path and scheduled task name, and possibly additional parameters which vary per version
Malware family:
quasar
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2026-03-07 05:22:05 UTC
Tags:
auto-reg evasion quasar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
99.9%
Tags:
autorun quasar
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm base64 downeks fingerprint keylogger lolbin obfuscated obfuscated packed quasar quasarrat reconnaissance runonce schtasks stack_pickle unsafe vermin
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Result
Gathering data
Verdict:
Malicious
Score:
100%
Verdict:
Malware
File Type:
PE
Gathering data
Verdict:
Malicious
Threat:
Family.QUASARRAT
Gathering data
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar execution persistence spyware trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Unpacked files
SH256 hash:
b9b51e29d004739a401a3628bd5b48cccb9bfa5bbc67dbacd3be197a5be32285
MD5 hash:
75c3b29dd351228bab20770474e8f93a
SHA1 hash:
1be457e4917560cf3f028adaf759a315a8e40894
SH256 hash:
cfeec75a0aad3efbd553d9d1f67b71b3de7ec9788629d73ce696bdaadd26554c
MD5 hash:
a636c6244c3193bb4cd596606e4937ad
SHA1 hash:
785c9bd21aefde156d5dc744c0aa577315fea5bf
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Malware family:
QuasarRAT
Verdict:
Malicious
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: | 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_SUSPICIOUS_EXE_NoneWindowsUA |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows executables referencing non-Windows User-Agents |
| Rule name: | MAL_BackNet_Nov18_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects BackNet samples |
| Reference: | https://github.com/valsov/BackNet |
| Rule name: | MAL_BackNet_Nov18_1_RID2D6D |
|---|---|
| Author: | Florian Roth |
| Description: | Detects BackNet samples |
| Reference: | https://github.com/valsov/BackNet |
| Rule name: | MAL_QuasarRAT_May19_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects QuasarRAT malware |
| Reference: | https://blog.ensilo.com/uncovering-new-activity-by-apt10 |
| Rule name: | MAL_QuasarRAT_May19_1 |
|---|---|
| Description: | Detects QuasarRAT malware |
| Rule name: | MAL_QuasarRAT_May19_1_RID2E1E |
|---|---|
| Author: | Florian Roth |
| Description: | Detects QuasarRAT malware |
| Reference: | https://blog.ensilo.com/uncovering-new-activity-by-apt10 |
| Rule name: | Multifamily_RAT_Detection |
|---|---|
| Author: | Lucas Acha (http://www.lukeacha.com) |
| Description: | Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | quasarrat |
|---|---|
| Author: | jeFF0Falltrades |
| 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) |
| Rule name: | Vermin_Keylogger_Jan18_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects Vermin Keylogger |
| Reference: | https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/ |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Dropped by
Amadey
Delivery method
Distributed via web download
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