MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6498dbfa29de6a0caf8b1e099f7ec2676ef5b2ac0576f6bb324122e7a4162853. 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: 20


Intelligence 20 IOCs YARA 30 File information Comments 1

SHA256 hash: 6498dbfa29de6a0caf8b1e099f7ec2676ef5b2ac0576f6bb324122e7a4162853
SHA3-384 hash: 6cf84be90f346ead2edc16d95d704a08648d90c6c7c6d641bde5d4a7a5eecba0854ea77dfb8a432118e6a4ba3e9dc0c1
SHA1 hash: 3c0b0e61ca49c7e0d394f4936757403dc74bf3c8
MD5 hash: b7626d89b385c029db4666f162c25d48
humanhash: four-lemon-robin-magazine
File name:c.exe
Download: download sample
Signature QuasarRAT
File size:3'265'536 bytes
First seen:2025-01-02 08:23:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 49152:Kvkt62XlaSFNWPjljiFa2RoUYIuARJ6obR3LoGdcgJTHHB72eh2NT:Kv462XlaSFNWPjljiFXRoUYIuARJ6Cj
TLSH T16EE56B143BF85E27E1BBE677E5B0041267F0FC1AB363EB0B6581677A1C53B5098026A7
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 :
1
# of downloads :
409
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
c.exe
Verdict:
Malicious activity
Analysis date:
2025-01-02 08:52:45 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
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm certreq crypto expand explorer infostealer keylogger lolbin obfuscated quasarrat rat remote runonce schtasks stealer stealer
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
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:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1583244 Sample: c.exe Startdate: 02/01/2025 Architecture: WINDOWS Score: 100 32 Found malware configuration 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus / Scanner detection for submitted sample 2->36 38 6 other signatures 2->38 8 c.exe 5 2->8         started        12 Client.exe 3 2->12         started        process3 file4 26 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 8->26 dropped 28 C:\Users\user\AppData\Local\...\c.exe.log, CSV 8->28 dropped 40 Uses schtasks.exe or at.exe to add and modify task schedules 8->40 42 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->42 14 Client.exe 2 8->14         started        18 schtasks.exe 1 8->18         started        signatures5 process6 dnsIp7 30 38.242.241.140, 4782, 49705, 49710 NATIXISUS United States 14->30 44 Antivirus detection for dropped file 14->44 46 Multi AV Scanner detection for dropped file 14->46 48 Machine Learning detection for dropped file 14->48 50 2 other signatures 14->50 20 schtasks.exe 1 14->20         started        22 conhost.exe 18->22         started        signatures8 process9 process10 24 conhost.exe 20->24         started       
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Status:
Malicious
First seen:
2025-01-01 18:16:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
Result
Malware family:
Score:
  10/10
Tags:
family:quasar botnet:office04 spyware trojan
Behaviour
Scheduled Task/Job: Scheduled Task
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
Malware Config
C2 Extraction:
38.242.241.140:4782
Verdict:
Malicious
Tags:
rat quasar_rat stealer Win.Malware.Generic-9883083-0
YARA:
malware_windows_quasarrat win_quasar_rat_client MAL_QuasarRAT_May19_1 MALWARE_Win_Quasarstealer
Unpacked files
SH256 hash:
6498dbfa29de6a0caf8b1e099f7ec2676ef5b2ac0576f6bb324122e7a4162853
MD5 hash:
b7626d89b385c029db4666f162c25d48
SHA1 hash:
3c0b0e61ca49c7e0d394f4936757403dc74bf3c8
Detections:
QuasarRAT
Malware family:
QuasarRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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:BLOWFISH_Constants
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:Detect_PowerShell_Obfuscation
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:Diff_QuasarRAT_01
Author:schmidtsz
Description:Identify QuasarRAT samples
Rule name:golang_david_CSC846
Author:David
Description:CSC-846 Golang
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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:Lumma_Stealer_Detection
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
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:MD5_Constants
Author:phoul (@phoul)
Description:Look for MD5 constants
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:RC6_Constants
Author:chort (@chort0)
Description:Look for RC6 magic constants in binary
Reference:https://twitter.com/mikko/status/417620511397400576
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_803feff4
Author:Elastic Security
Rule name:win_quasar_rat_client
Author:Matthew @ Embee_Research
Description:Detects strings present in Quasar Rat Samples.
Rule name:XWorm_3_0_3_1_Detection
Author:Archevod
Description:Detects XWorm versions 3.0 and 3.1

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Web download

QuasarRAT

Executable exe 6498dbfa29de6a0caf8b1e099f7ec2676ef5b2ac0576f6bb324122e7a4162853

(this sample)

  
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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments



Avatar
commented on 2025-01-02 08:26:02 UTC

RAT King Parser (https://github.com/jeFF0Falltrades/rat_king_parser) Output:

{
"sha256": "6498dbfa29de6a0caf8b1e099f7ec2676ef5b2ac0576f6bb324122e7a4162853",
"yara_possible_family": "quasarrat",
"key": "8324d5bed06b387a9c3702c7b9c9b366071ba646e9deaabced674ec9d27561e5",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"\u2cf5\u8a93\ud3da\u6b5c\u4138c\uf743\ucd6e\ue35c\u0cf5\ufffd\u59b4\ue39f\uaf80\u9a35\uf20f\u6317\u1eaf\u480a\u1ce4": "1.4.1",
"\uecb4\u0c93\u5476\u19f1\u2c09\u471b\ub7b8\u1117\ub753\u5e00\ub055\u87ed\u46b0\u142d\u932f\ub36c\u8de8\u56cf\ub03e\u0121": "38.242.241.140:4782;",
"\uac31\ucbbc\u603b\u76a9\u71d5\u10f4\uae77\u7f0e\uab69\u8b6e\u90c3\ucbd9\u2058\uad41\u4177\ufffd\u2337\ub9cc\ud11c\ub72f": 3000,
"\u5a8b\ufd80\u9d24\ud794\u40d0\u10fc\ub744\u1957\ub404\u8e56\u2580\uc325\ubc56\u02bc\ufd17\u8141\ufffd\u7fc4\ua31d\uaa9e": "APPLICATIONDATA",
"\u8e90\u3808\u5b5f\uaf0b\u36e8\ucb35\u26a4\u0824\ufffd\u4db4\u5558\uf113\ub03d\u0087\u86db\u1a7a\u0be7\ue028\u676d\ue36b": "SubDir",
"\u054f\u681f\u30a8\u81ce\ud6a0\u9682\u29a5\u6230\u385f\u05e0\uc1aa\u36b4\uf812\ub1db\u067b\u3f82\u25c6\ufd60\u0117\u962e": "Client.exe",
"\u161d\u4100\ufad8\ued6c\ufea8\uf596\u85e5\u0569\uc8e2\u7cb5\uf3d4\u2efd\ueaa4\ufffd\u1bff\uf8e1\u3c52\u4f0c\u03a9\uc31e": true,
"\u8395\u8b83\u2bb4\u14dc\ue5c8\u8cdb\u0d90\ub639\u56f7\u0eea\u3f32\ub977\uef7b\ua767\u5b70\u4305\uf385\uc3ee\u93e1\u8b2f": true,
"\ue6e2\ufaa4\u8069\ua086\u99d2\u42b7\u0382\u5139\u40cc\u2e9f\uadfd\u2bb5\u8500\ufffd\u91e5\u79dc\ua9a9\ue7c9\ufcec\u8aaf": "4b387528-97ec-466a-915c-099747a4eb75",
"\ua6f5\u9036\u2900\ub2ef\ufffd\ud44b\u8442\ue73e\ufffd\u5503\u5941\uab67\ud6aa\ucbce\u2590\u845e\u0a45\ue5d4\u30de\uaef0": "Essentials",
"\u2375\u6123\u1e06\u1fcf\u8b68\u55f2\u7591\u7f2a\u1d80\ufffd\ucf03\u6fd1\u3661\uf5fa\ue76f\u2724\uc5c3\u7a48\u82d7\u3210": true,
"\u812c\u2c0f\ufffd\uaaab\u898a\uc265\u5251\u1b27\u68c1\u7cf3\ua471\u3f60\u9760\uc897\u466a\ufd94\uf1f2\uf473\u7fa6\ube2d": true,
"\u60c5\uf200\u7670\u9de7\u4fae\u9a98\u84e2\u6834\ucb81\ue20a\u24a9\u0845\u5e27\u1d4a\ubb23\u5036\u08df\u4e32\ub240\u23df": "E3FC55CEBE0920BC04F0B9E76DF59B61B3B7C9EA",
"\uc08d\ucfe5\u4b9a\u90ad\u53ee\u26a6\u431b\ub7af\ud425\ua62a\u53af\ub865\u659f\uad36\u924d\u284b\u5ac0\u431e\u9a28\u7311": "Office04",
"\ue3d9\u6e01\u9959\uff81\ueeff\u4478\u2d8f\ufffd\u0b73\ud50b\u65b9\u80dc\u08af\ua6f3\u83de\ufc59\u8c89\u5285\u6df1\u09ad": "Logs",
"\ufffd\uef31\ue2fe\u7f87\u2eb6\u0c04\u3c32\u3fea\u7347\u8176\u071c\u4440\u1eed\uf3c0\u9af6\u76a5\ub616\uf77e\uc348\ub686": "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",
"\u05f8\u3dfb\ufffd\u30cc\u8bbb\uec42\u5337\ue52e\ua0d4\u3379\u7cb9\u2db3\u619f\u244b\u5a9c\u599f\u07eb\u25c4\uab2c\ubb58": "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",
"\u019d\u2882\uf68b\ub626\u1262\u99f9\ub14e\uff4c\u1402\u83c6\uea13\u3d5b\u4b72\u96c7\u374b\u0d29\ub028\uf79d\u1ca8\u8a4a": true,
"\u5d96\u9219\u4e41\ub97a\uc8c9\u8c6e\u7749\u0173\u5a53\ubac5\u4939\ue891\u3f10\u8b49\ucdb9\ud176\u103f\u724b\uf9d5\uc5ef": true,
"\uad4d\u8d41\uc903\u0366\u3122\uf459\uf232\ua1c2\u3cc4\uc037\ubdce\ue236\u7058\u6ad3\u4691\u8763\ub19e\u6851\u07e0\uf3e9": "",
"\u0a75\u1509\u8dad\u3da1\uf705\u84f2\u0402\u3bc7\u049e\u2810\uf312\u9551\uf36c\u80a4\uf7c0\u1fe6\u1ebe\uca10\u4d92\uefcc": "",
"\u035c\u0719\u4536\u5ddc\ufef9\u34b0\ud7e8\u459b\ue5ea\u3bf9\ufffd\u4794\ud563\u4369\u4f9c\ufd1c\u20d0\u7b57\u1a95\u369e": true
}
}