MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 78daa33cb739c0b1648f17599695cf0fc5ad0b1c7640d55d91e1d534a024c6f7. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments

SHA256 hash: 78daa33cb739c0b1648f17599695cf0fc5ad0b1c7640d55d91e1d534a024c6f7
SHA3-384 hash: de352509b25b892a20873103e40acaced6cebc403ff4afbce4bc47a1f113ca90eea22f17d4f3f44320a3f04867f24fa9
SHA1 hash: f4dd5537cf26ef2ba14caae3f4c5d090b340bacf
MD5 hash: a793e13f7d2a8263e3e412068c889683
humanhash: seven-iowa-september-ceiling
File name:a793e13f7d2a8263e3e412068c889683.exe
Download: download sample
Signature QuasarRAT
File size:16'655'872 bytes
First seen:2025-06-01 16:59:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 393216:9XyO3Ymi2XVxfID0R1uRRwWzDhzKp9whFd:NyOoglxfID0OsWyw
Threatray 44 similar samples on MalwareBazaar
TLSH T102F67A0AC700A7C09D435EA6807B55710A4DCDFB8BCF8B91A344CB059372B9B6695BEF
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
dhash icon 8eccf86171e4cc8e (8 x AsyncRAT, 3 x XWorm, 2 x RedLineStealer)
Reporter abuse_ch
Tags:exe QuasarRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
426
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
https://www.youtube.com/watch?v=6c4fnbrOdEo
Verdict:
Malicious activity
Analysis date:
2025-05-30 08:18:00 UTC
Tags:
evasion arch-exec lumma stealer crypto-regex

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
vmdetect asyncrat autorun quasar
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file
Creating a process from a recently created file
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Creating a file in the %AppData% subdirectories
Launching a process
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Malware family:
ModernLoader
Verdict:
Malicious
Result
Threat name:
Quasar, XWorm
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Creates files with lurking names (e.g. Crack.exe)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Yara detected RUNPE
Yara detected Telegram RAT
Yara detected Telegram Recon
Yara detected XWorm
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1703438 Sample: yb9vWqZpon.exe Startdate: 01/06/2025 Architecture: WINDOWS Score: 100 46 ipwho.is 2->46 48 bg.microsoft.map.fastly.net 2->48 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 Antivirus / Scanner detection for submitted sample 2->68 70 9 other signatures 2->70 10 yb9vWqZpon.exe 4 2->10         started        14 AggregatorHost.exe 2->14         started        signatures3 process4 file5 40 C:\Users\user\Desktop\XWorm.exe, PE32 10->40 dropped 42 C:\Users\user\Desktop\CrackLoader.exe, PE32 10->42 dropped 44 C:\Users\user\AppData\...\yb9vWqZpon.exe.log, CSV 10->44 dropped 78 Creates files with lurking names (e.g. Crack.exe) 10->78 16 CrackLoader.exe 5 10->16         started        20 XWorm.exe 2 10->20         started        signatures6 process7 file8 36 C:\Users\user\AppData\...\AggregatorHost.exe, PE32 16->36 dropped 38 C:\Users\user\AppData\...\CrackLoader.exe.log, CSV 16->38 dropped 54 Multi AV Scanner detection for dropped file 16->54 56 Creates files with lurking names (e.g. Crack.exe) 16->56 58 Uses schtasks.exe or at.exe to add and modify task schedules 16->58 60 Hides that the sample has been downloaded from the Internet (zone.identifier) 16->60 22 AggregatorHost.exe 14 2 16->22         started        26 schtasks.exe 1 16->26         started        62 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 20->62 28 WerFault.exe 19 16 20->28         started        signatures9 process10 dnsIp11 50 79.110.49.174, 4782, 49698, 49709 OTAVANET-ASCZ Germany 22->50 52 ipwho.is 108.181.98.179, 443, 49700, 49736 ASN852CA Canada 22->52 72 Multi AV Scanner detection for dropped file 22->72 74 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->74 76 Installs a global keyboard hook 22->76 30 schtasks.exe 22->30         started        32 conhost.exe 26->32         started        signatures12 process13 process14 34 conhost.exe 30->34         started       
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Status:
Malicious
First seen:
2025-05-26 23:42:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
6
AV detection:
22 of 24 (91.67%)
Threat level:
  2/5
Result
Malware family:
Score:
  10/10
Tags:
family:quasar botnet:xworm2 spyware trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Checks computer location settings
Executes dropped EXE
Quasar RAT
Quasar family
Quasar payload
Malware Config
C2 Extraction:
79.110.49.174:4782
Unpacked files
SH256 hash:
78daa33cb739c0b1648f17599695cf0fc5ad0b1c7640d55d91e1d534a024c6f7
MD5 hash:
a793e13f7d2a8263e3e412068c889683
SHA1 hash:
f4dd5537cf26ef2ba14caae3f4c5d090b340bacf
SH256 hash:
a0af255ea4b09a8cdb995b8c6fd1075e46f098e23c2351c974e6ded9b8b620cf
MD5 hash:
c52a44933d17d576d4c97b4cb0545841
SHA1 hash:
092696fdcc034910aa02c94a5c93f4e1e86e0c50
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
SH256 hash:
4c9615496970ea84320e2a6e99f8fb828e3c7790384df5585d93fc368885d94e
MD5 hash:
50e6524b7ee9c2c93f5210b63cb1ca54
SHA1 hash:
3e296ec3bb24750833ea80515e6fb4c73874c91a
SH256 hash:
c9736bed57d137a0bd4a454a70436020312db5a365bdd243037e766695c18ccd
MD5 hash:
41b34eab1585d5381c56730b93dd1310
SHA1 hash:
510b640517342dbcc40c81b63db23fa1444a71ed
SH256 hash:
d3829ab75e20bf6481508571ac5fcdec345a84daeef695f28e573a48c7932f4b
MD5 hash:
1050817564ccfe55da1cf4a39afc0fe3
SHA1 hash:
625b255dfec7a78eb949407657a8ba3031d8a842
SH256 hash:
bc0243134c93c55ea105d0e9c2a43b6030e973290d0a061cf3a61986a2268a88
MD5 hash:
d2edde626c241549eab636aa87fb5d38
SHA1 hash:
8d836febd477b3ec44cc37f4f0aecdaa1d7db788
SH256 hash:
0fa69c27c5ad6cae2c0bcab520e77641f1e056157e75034d3a54c8d5f498d7f9
MD5 hash:
990af530c28fe220c1c188bf0b5be6c1
SHA1 hash:
a32d6675d410ddaece7a489d4089c8633dca87ad
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:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information


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

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

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