MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 fdba9e9d51c62d59de744a179a50ce9f5838af549f30f5b87c8175dace024fee. 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
| SHA256 hash: | fdba9e9d51c62d59de744a179a50ce9f5838af549f30f5b87c8175dace024fee |
|---|---|
| SHA3-384 hash: | 51db638ef31062c20d84367bea4ea187ed8a7ebcca078ba48d7c9ceeddf8b9ce3d18c007a3da62ad83e0a7a556a675d0 |
| SHA1 hash: | 4a3ebaa010ba5306cd09c07eb26bbe99ff46496f |
| MD5 hash: | 05aa0a6d16f1dabf72b4c880a5d357d0 |
| humanhash: | oregon-juliet-lima-enemy |
| File name: | Client-built.exe |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 514'048 bytes |
| First seen: | 2024-12-13 09:59:14 UTC |
| Last seen: | 2025-02-04 05:44:37 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'749 x AgentTesla, 19'653 x Formbook, 12'246 x SnakeKeylogger) |
| ssdeep | 6144:pTEgdc0YZXAGbgiIN2RSBX/bbVbkbLyUR3mRfbNcEIHb8F9w/Vg6cTR3K:pTEgdfY1bg7bNk2RB4kiVPcdK |
| Threatray | 367 similar samples on MalwareBazaar |
| TLSH | T1E6B46C9023E8862BE1AF67BDE8751510ABF5F417B267EB8F0940E1E82C66706DD41373 |
| TrID | 40.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 31.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 9.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 5.7% (.EXE) Win64 Executable (generic) (10522/11/4) 3.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) |
| Magika | pebin |
| Reporter |  lontze7 |
| Tags: | exe QuasarRAT |
Intelligence
File Origin
# of uploads :
7
# of downloads :
349
Origin country :
FRVendor Threat Intelligence
Malware family:
quasar
ID:
1
File name:
Client-built.exe
Verdict:
No threats detected
Analysis date:
2024-12-13 11:35:45 UTC
Tags:
quasar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
infosteal autorun quasar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the system32 subdirectories
Launching a process
Creating a process from a recently created file
Creating a file
Connection attempt
Setting a keyboard event handler
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-vm crypto explorer hook infostealer keylogger lolbin obfuscated quasar quasarrat rat remote runonce schtasks stealer stealer vermin
Verdict:
Malicious
Labled as:
Trojan.Agent
Result
Verdict:
MALICIOUS
Verdict:
Malicious
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
Drops executables to the windows directory (C:\Windows) and starts them
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Detection:
quasar
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Status:
Malicious
First seen:
2023-04-19 14:22:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
33 of 38 (86.84%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
+ 357 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar botnet:office04 spyware trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Drops file in System32 directory
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
69.160.242.105:4782
69.160.242.105:11066
69.160.242.105:11066
Verdict:
Malicious
Tags:
rat quasar_rat vermin stealer Win.Malware.Bulz-9823462-0
YARA:
malware_windows_quasarrat win_quasar_rat_client MAL_QuasarRAT_May19_1 Vermin_Keylogger_Jan18_1 MALWARE_Win_Quasarstealer
Unpacked files
SH256 hash:
fdba9e9d51c62d59de744a179a50ce9f5838af549f30f5b87c8175dace024fee
MD5 hash:
05aa0a6d16f1dabf72b4c880a5d357d0
SHA1 hash:
4a3ebaa010ba5306cd09c07eb26bbe99ff46496f
Detections:
QuasarRAT
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: | Detect_PowerShell_Obfuscation |
|---|---|
| Author: | daniyyell |
| Description: | Detects obfuscated PowerShell commands commonly used in malicious scripts. |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Windows executables referencing non-Windows User-Agents |
| Rule name: | INDICATOR_SUSPICIOUS_GENInfoStealer |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables containing common artifacts observed in infostealers |
| Rule name: | MALWARE_Win_QuasarStealer |
|---|---|
| Author: | ditekshen |
| Description: | Detects Quasar infostealer |
| Rule name: | MAL_QuasarRAT_May19_1 |
|---|---|
| Description: | Detects QuasarRAT malware |
| 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_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_kingrat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | RansomPyShield_Antiransomware |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP) |
| Rule name: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| 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/ |
| Rule name: | win_quasar_rat_client |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in Quasar Rat Samples. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (HIGH_ENTROPY_VA) | high |
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