MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c55655c8daeb51fb9592bfd3eb4e29e1a40fc89b13af090c52cbcd4b6390521. 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


Intelligence 17 IOCs YARA 25 File information Comments 1

SHA256 hash: 4c55655c8daeb51fb9592bfd3eb4e29e1a40fc89b13af090c52cbcd4b6390521
SHA3-384 hash: ed7ed3b981c9e782866d088014816a3b47879da17705c9e79d2dfb8c680b0a0476f0e0ba0d31319a1e1d92d78a5a8e8e
SHA1 hash: 84b90137c36d741a4291aa22f4450c470ed9bd89
MD5 hash: 5c585cd5a2d292a0cb0be6b10cace921
humanhash: oven-saturn-shade-colorado
File name:MMO 1.exe
Download: download sample
Signature QuasarRAT
File size:3'272'704 bytes
First seen:2024-12-17 06:34:00 UTC
Last seen:2025-01-20 08:36:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'075 x AgentTesla, 20'033 x Formbook, 12'353 x SnakeKeylogger)
ssdeep 49152:avCI22SsaNYfdPBldt698dBcjHQCv1JSpoGdTvTHHB72eh2NT:avP22SsaNYfdPBldt6+dBcjHQCa
Threatray 995 similar samples on MalwareBazaar
TLSH T1C5E54A1437F85F23E1BBE273D5B0141267F1E82AB3A3FB4B6181677A1C53B505841AAB
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
File icon (PE):PE icon
dhash icon 4c3269d4c4f9328c (1 x QuasarRAT)
Reporter lontze7
Tags:exe QuasarRAT

Intelligence


File Origin
# of uploads :
5
# of downloads :
302
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
4c55655c8daeb51fb9592bfd3eb4e29e1a40fc89b13af090c52cbcd4b6390521
Verdict:
Malicious activity
Analysis date:
2024-12-16 12:33:29 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 %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 hook infostealer keylogger lolbin obfuscated quasarrat rat remote runonce schtasks stealer stealer
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
Antivirus detection for URL or domain
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 dnsIp2 2 Behavior Graph ID: 1576474 Sample: MMO 1.exe Startdate: 17/12/2024 Architecture: WINDOWS Score: 100 31 tieumao1995-51127.portmap.io 2->31 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Antivirus detection for URL or domain 2->47 49 8 other signatures 2->49 9 MMO 1.exe 5 2->9         started        13 Client.exe 3 2->13         started        signatures3 process4 file5 27 C:\Users\user\AppData\Roaming\...\Client.exe, PE32 9->27 dropped 29 C:\Users\user\AppData\Local\...\MMO 1.exe.log, CSV 9->29 dropped 51 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->51 15 Client.exe 2 9->15         started        19 schtasks.exe 1 9->19         started        signatures6 process7 dnsIp8 33 tieumao1995-51127.portmap.io 193.161.193.99, 49732, 49734, 49739 BITREE-ASRU Russian Federation 15->33 35 Antivirus detection for dropped file 15->35 37 Multi AV Scanner detection for dropped file 15->37 39 Machine Learning detection for dropped file 15->39 41 2 other signatures 15->41 21 schtasks.exe 1 15->21         started        23 conhost.exe 19->23         started        signatures9 process10 process11 25 conhost.exe 21->25         started       
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Status:
Malicious
First seen:
2024-12-16 12:25:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
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 FindShellTrayWindow
Suspicious use of SendNotifyMessage
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:
tieumao1995-51127.portmap.io:51127
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:
4c55655c8daeb51fb9592bfd3eb4e29e1a40fc89b13af090c52cbcd4b6390521
MD5 hash:
5c585cd5a2d292a0cb0be6b10cace921
SHA1 hash:
84b90137c36d741a4291aa22f4450c470ed9bd89
Detections:
QuasarRAT
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: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: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: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.

File information


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

Web download

QuasarRAT

Executable exe 4c55655c8daeb51fb9592bfd3eb4e29e1a40fc89b13af090c52cbcd4b6390521

(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 2024-12-17 06:36:02 UTC

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

{
"sha256": "4c55655c8daeb51fb9592bfd3eb4e29e1a40fc89b13af090c52cbcd4b6390521",
"yara_possible_family": "quasarrat",
"key": "2111a5ec9dcd5e883e3859192fcd3f0332a7a70f2462eb83d5d64e101f764ce2",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"\ub84e\u23a3\ua67e\u1ced\u9fce\ud4d1\ub50d\u91fd\u0c52\uabb3\ubc31\u1d83\u2bb1\u5a3e\u5443\u9327\u8ea3\ud756\ubf28\ucee8": true,
"\u843e\uefe6\ued8a\ucc64\u3187\u43d7\u5c13\ue7e8\u9cf5\ud653\uc828\u1680\ub89e\u9a61\u044d\u793e\u6e3e\u62fd\u4de3\ud110": true,
"\u6696\u686e\uf2d4\u3a82\u25f6\u4606\u2ac2\u2758\u73a7\u85d6\u7fba\u3de3\u787c\u1b45\u1dcb\u0e69\u65f8\u4999\u9c1e\uc6eb": false,
"\ue8c3\u2b84\u66cd\u8d93\ud63a\ue7d5\u158d\u59a0\u7ff9\u4927\u8d61\u2db4\u3258\u8451\uc34f\ufffd\ub0ed\uee73\uadfa\ufb14": true,
"\u793a\uecf4\uaa18\ua1cd\u8626\u8c3b\u1e91\u3bf6\u1903\uaf30\u3a88\u44a6\u3644\u96dc\u0c6a\ud1dd\u2fe2\u2c0c\u3a86\ufd96": true,
"\u22dc\u300b\u7bc0\ub14e\u4f67\u995f\uc339\u8fd4\u9ff9\ua1d6\ufffd\u34ac\u46a2\uf733\uf3d5\uc9d4\u3216\u0695\ua82b\ub402": false,
"\u4770\u3500\u4f81\ubbcb\uc0fd\ue9a0\ufffd\u8f2c\uc8b6\u091b\u154f\ud263\ua004\u2016\u05e8\u9f98\u353b\u26af\u350e\ua2c1": false,
"\u4e98\u439d\u44c3\u5dd6\u0165\ua595\u23e7\u4329\u6cf2\u7dba\ub503\u395c\ub89e\ub69b\u2ea7\ufffd\ud651\uec69\u08e7\u6335": 3000,
"\u43fc\u5cd0\u0823\u479d\u5651\u3abf\u52cf\u7e7b\u0b5d\ufffd\u1734\uc2d9\u4ab7\ubcc6\u5166\u275c\u99cf\u761a\u03d5\u493f": "APPLICATIONDATA",
"\ua578\ub72b\u9057\ucdb7\u15d8\u1234\uaa20\ub5c4\u948c\u55da\uea56\uad48\u2154\u1c2c\u5421\u59cf\uc78b\u0be5\ub069\u245b": "1.4.1",
"\u0a70\u8e9f\u5fbf\u411f\ub3f1\ud6e3\u9a82\u09be\uf8cd\u94be\u7a20\ufefd\uaa0f\uf622\u65b7\u13df\ufc33\u9dfc\u05b4\u3f72": "tieumao1995-51127.portmap.io:51127;",
"\u6bce\ucd17\uba10\u7a89\u01ff\ub3fa\ud248\ue56f\u83ec\u856a\u34b2\u6ae9\u3b87\u5be4\ua23c\ua058\u6ea0\u0fce\u66ae\u6b4c": "SubDir",
"\u28b5\u8913\u776c\u8de3\u7f03\u83e9\u019f\ufffd\u7ca0\ub292\u881f\u5fe3\u1e66\u6429\u422c\ufffd\u734f\uaf96\ucf21\ue994": "Client.exe",
"\uc9ed\u2d4b\u62a1\u1f7f\u268e\u6bb7\ue0d9\uab84\ue56f\ub968\u7d2c\u6ca3\u83bd\u2347\ud4ab\u43ff\ub352\u9208\u90cc\u96b1": "4119a2e0-4ae4-4843-8534-99af91a2475d",
"\uc641\uea15\ue268\ufffd\u8c7e\u07d0\u0ded\u3f8e\u2f38\ue280\u21a6\u824b\u9d3a\u2993\ue0e8\u2cd9\u800f\ua56e\ue136\u2790": "Startup",
"\u07c8\uc5e1\u9b93\ud47e\ue9f6\u1c46\u63dd\u98ce\u98cc\u5405\u8a2d\ubcf4\u41d7\u4647\ue447\u20e2\ufffd\u8ffb\uf00a\u7548": "DF6316067206E09C1F85138FCEBD56F5D94BF6AE",
"\u4d67\ufd31\ufffd\u9d3c\ud5e9\ufffd\u37ce\u2030\ud1e1\u7be8\ub416\ue2ff\ub5cd\ueee2\ufffd\uce8e\u857b\u5f82\u71f0\u32bd": "Office04",
"\ueec5\u2f15\u3345\u6461\u6d0b\u596b\u1c4f\u1f2e\u25f5\u4fd1\u6eb9\ufffd\u7b9d\ud1c1\u8975\ufffd\u0b3f\u5b44\ub3c2\u5c29": "Logs",
"\ue44c\ue239\u4825\ub2a8\u9e6e\uf319\ua6ca\uf1ce\u670d\ubb98\u081c\u995d\ubbe0\u2c30\ue564\u14f8\u7dbe\u7ba9\u9442\uf334": "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",
"\ua20d\u1a1f\ue06f\u3058\ud66e\u06ce\u0fd1\u0bb7\u9828\ub9bd\u3231\u5470\u3d38\u1a46\u571b\u5785\uff79\uc4b9\u6e4d\uc52c": "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",
"\u93b7\u8a67\ucd8d\u2a64\u091e\u0c9a\ubd72\u3987\u4b14\ua2b6\ue056\u9f3d\uea8c\u7893\u2a4c\u58ee\u00af\ud157\u98c6\u8469": "",
"\u7436\u5f04\u82c5\uca3c\u5f58\u0560\ubc8c?\u36cd\u0125\u5160\u8216\u2dfd\u1013\u38d1\u66e3\ua656\u68ec\uea25\u9e6e": ""
}
}