MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa931ee4d177705b5f0c4bb52d73e83b29efc9eee5d07fbe27b7fcf106c7b467. 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: 19


Intelligence 19 IOCs YARA 25 File information Comments 1

SHA256 hash: aa931ee4d177705b5f0c4bb52d73e83b29efc9eee5d07fbe27b7fcf106c7b467
SHA3-384 hash: 1158661ebaf92a4976d9064468346db6b576117ba4660cdd5c47e03698e4c9de1713f32aaba1e4945f2b78a86c8f9897
SHA1 hash: a0123aa0f2801efb23df7415ce2f50964596b152
MD5 hash: a1bdb9ef597b78092eaf7b40422d0806
humanhash: foxtrot-cardinal-beryllium-mobile
File name:___ thi v_o 10 Chuy_n Ti_ng Anh Ph_ th_ng n_ng khi_u H_ Ch_ Minh n_m 1999-2000.pdf.exe.bin
Download: download sample
Signature QuasarRAT
File size:3'333'632 bytes
First seen:2025-05-10 12:03:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 49152:NvAz92YpaQI6oPZlhP3ReybewoT7s032xvJpKoGdPdcXTHHB72eh2NT:Nva92YpaQI6oPZlhP3Yybewoz2oVc
TLSH T1C3F55A143BF85E32E16AD6B2D5B0501663F1FC2AF363EB1B2181677E1CA3B505C416AB
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
dhash icon 68d8d8c8d9a9c1d9 (96 x SnakeKeylogger, 67 x RemcosRAT, 66 x Formbook)
Reporter JaffaCakes118
Tags:exe QuasarRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
518
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
Đề thi vào 10 Chuyên Tiếng Anh Phổ thông năng khiếu Hồ Chí Minh năm 1999-2000.pdf.exe
Verdict:
Malicious activity
Analysis date:
2025-05-10 08:44:59 UTC
Tags:
quasar rat remote evasion

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
underscore 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 expand explorer fingerprint infostealer keylogger lolbin masquerade obfuscated obfuscated quasarrat rat reconnaissance remote runonce schtasks stealer stealer
Result
Threat name:
AsyncRAT, Quasar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Suricata IDS alerts for network traffic
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Quasar RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1686704 Sample: ___ thi v_o 10 Chuy_n Ti_ng... Startdate: 10/05/2025 Architecture: WINDOWS Score: 100 31 Huy1612-24727.portmap.io 2->31 33 ipwho.is 2->33 35 bg.microsoft.map.fastly.net 2->35 47 Suricata IDS alerts for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 12 other signatures 2->53 9 ___ thi v_o 10 Chuy_n Ti_ng Anh Ph_ th_ng n_ng khi_u H_ Ch_ Minh n_m 1999-2000.pdf.exe.bin.exe 5 2->9         started        13 Antimalware Service Executable.exe 3 2->13         started        signatures3 process4 file5 27 C:\...\Antimalware Service Executable.exe, PE32 9->27 dropped 29 ___ thi v_o 10 Chu...pdf.exe.bin.exe.log, CSV 9->29 dropped 55 Hides that the sample has been downloaded from the Internet (zone.identifier) 9->55 15 Antimalware Service Executable.exe 14 2 9->15         started        19 schtasks.exe 1 9->19         started        signatures6 process7 dnsIp8 37 Huy1612-24727.portmap.io 193.161.193.99, 24727, 49697, 49702 BITREE-ASRU Russian Federation 15->37 39 192.168.1.12, 4782 unknown unknown 15->39 41 ipwho.is 108.181.47.111, 443, 49699, 49704 ASN852CA Canada 15->41 43 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->43 45 Installs a global keyboard hook 15->45 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:
2025-05-10 12:04:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
quasarrat
Similar samples:
Result
Malware family:
Score:
  10/10
Tags:
family:quasar botnet:nguyenhoang 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:
192.168.1.12:4782
Huy1612-24727.portmap.io:24727
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:
aa931ee4d177705b5f0c4bb52d73e83b29efc9eee5d07fbe27b7fcf106c7b467
MD5 hash:
a1bdb9ef597b78092eaf7b40422d0806
SHA1 hash:
a0123aa0f2801efb23df7415ce2f50964596b152
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: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
Author:jeFF0Falltrades
Rule name:quasarrat_kingrat
Author:jeFF0Falltrades
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 aa931ee4d177705b5f0c4bb52d73e83b29efc9eee5d07fbe27b7fcf106c7b467

(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 2025-05-10 12:06:03 UTC

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

{
"sha256": "aa931ee4d177705b5f0c4bb52d73e83b29efc9eee5d07fbe27b7fcf106c7b467",
"yara_possible_family": "quasarrat",
"key": "e82c0414782bc935c2920f397f7516e5ffcefd0a852c2a0bfa85a9d6cbb6f5c5",
"salt": "bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941",
"config": {
"\ufffd\ua617\u4bf0\u7bd5\ubc7d\u9258\u4ce4\u5908\ua3ef\ufffd\u5ec5\u97a2\u6d90\ud4ca\u9735\u6572\u4943\u99fb\u32d8\u54df": "1.4.1",
"\u3239\ubc8d\u28d0\u9110\ub5f1\ud6f5\ufffd\u2b26\ue688\u451e\u8523\u6d31\u4f0a\ue03e\u702b\u1701\ued6a\ufffd\u3d8e\uc016": "192.168.1.12:4782;Huy1612-24727.portmap.io:24727;",
"\u9599\ufffd\u324d\u9ebc\u86f1\u17a1\uc550\uaded\ub7b4\u9f64\ua082\u37a1\uf97b\u1655\uc01b\u5f90\u0288\u7053\u7c4d\ub5d9": 3000,
"\u8788\u2fa1\ua1c4\ua191\ufbcb\ua370\uf631\ub3b3\u4bc1\u8cd1\ufffd\ua140\u1868\u6dad\u6010\ueb2c\u1e89\ub87b\ub8bd\u1e24": "APPLICATIONDATA",
"\u40e8\u29a6\u09ca\u2b8a\u9df6\u4400\u5fa9\u8a5d\u0df5\ua79b\u1359\u49d1\u1204\u6b3f\ufd4c\u36cd\ua7a4\u8a0d\ue8da\u5966": "SubDir",
"\u7a33\u6c09\ue6a6\uaca6\u6985\u6000\ud031\u3c53\u216f\u307e\ue878\u6cfe\u1e75\u6a61\u4af1\u4eed\u2af3\u2ce1\ufffd\u054a": "Antimalware Service Executable.exe",
"\ufd02\u22e7\u63d3\u959d\u53c3\u7e62\u90e6\ue3da\u21ea\ub27a\uc758\ufffd\u2eda\u9a27\u7d36\u0c0f\ufa47\ub078\u251c\ufa5f": true,
"\ub76c\u7bcc\ua894\u1ca6\u7924\uea30\u3999\uf4e4\u9a14\uee83\u69ea\u7530\u4e6e\uf995\ubd56\u0d0f\uc49e\ubfe3\u9eb6\u6940": true,
"\ud5c7\u59a5\u7622\ue229\ue1a2\u9180\u611a\ub075\ud78d\u5dfc\u3c61\uf528\u6c21\u949d\ucda5\u4159\u4cd4\u9b9b\uc20f\uaa25": "bad44f3b-35d1-4331-9a97-77fd502e84c3",
"\u0c56\ua0b5\u5f0b\u2d59\ue7a1\u7290\u4abb\u51f4\u92d2\ub793\ue1cb\u2a4d\u8f0b\uf4b3\ued5d\u1e16\u463c\u7211\uc046\uc8bf": "Antimalware Service Executable",
"\ud19d\ub955\ufd85\u2e6d\u312e\u9a67\u6619\u7d69\ue424\u1cc9\ud6d1\uc505\uc1a3\u7ef2\ua641\uf70c\u2731@\u6d34\u7403": true,
"\u391a\u156d\uf185\uc2ed\u88f8\u49c7\u604c\u0e7b\u0c09\u90f7\u7a80\u8e3d\u9235\ufffd\u27fa\u2d6a\ubb25\u1b43\u33ab\ucfb8": true,
"\u5e87\ubb5d\ufffd\ub56d\u8e8f\u34d9\u0de3\ufcfc\uce09\ue541\u92de\u0977\u7b8e\ud5f4\u3863\u4e65\u285c\ufc9b\ud147\u32e8": "D47A3BFB603AC05E18027C5EFBB8D5663AB6949C",
"\u9a6d\ua889\u24e9\ua6a8\ua84d\u1b54\u21c1\uc2ae\u9616\u6ff5\u5e1d\ud1ac\u9721\u8da8\u0eb3\uae15\uaa7e\u073a\u8572\u07a9": "NguyenHoang",
"\u76c7\u12b1\uf638\u95b3\u8745\ub027\ud61d\u787c\u4b09\u5b57\u205f\u9a59\u59d4\ubb95\u26d2\u3f18\u2f0a\u6e77\u1843\ubd71": "Logs",
"\u184e\u3df7\u32c2\u6e3b\uad98\ufaa1\u445a\u2ea7\u6d73\u295c\u1b11\u2c84\uf8f3\u7adb\uccbf\u47b9\ue655\u4029\ub1fd\u6d60": "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",
"\u21af\uc0f3\ue789\u3c88\u5319\u1d8f\uca91\ue36b\u5b70\u3fb5\u2d24\u5d78\uaef5\u04a9\u90f8\u2b2c\u454d\u34a0\u95fb\u4d2c": "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",
"\u83b9\u6f2d\ufffd\ud4ed\ua5cd\u1352\u033f\uc693\ub0a0\u0d59\u3e1e\u8a2a\u5369\ub180\u7e55\ua823\ubbc1\uf041\u9ab2\u5eae": false,
"\u7869\ub006\u3cae\u8d6a\u14a7\u4126\u424a\u52fb\u6166\u632f\u5353\uad3b\ua831\ufffd\u1711\ub8f0\u1c27\u0529\u667b\u92d2": true,
"\u1a4c\u23fc\uff55\u5626\u2c88\u9abc\u25b2\u8e0c\u06e8\u40ef\ufffd\uc90b\uc668\u2cd8\u54ec\u06b9\uf328\u3399\uce6d\ue5a1": "",
"\u01ec\u5730\u9aa6\uc86a\u29dc\u7cef\u4f81\u2431\u2c86\uadc7\ue1ff\u1710\u83ae\u4733\ue031\ub78f\u8408\u159c\u4d7e\u7a15": "",
"\u084d\u9f7c\uba0a\u0350\u2ca6\uc350\ucf36\u66f2\u9d3e\u166d\uc57a\u70a0\uc79a\uabcd\ubffa\ud67e\u6ad6\ufffd\u6b44\u1d90": true
}
}