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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049. 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: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049
SHA3-384 hash: fb7bf1abda89c4cd14af3ac536ad58e22449b65d476f3b719bbaff54c803bb4ec4cf87a10f5646770304d1c86650cd50
SHA1 hash: 9f9260dee736434e780d2fa6b6651c3c057b3df5
MD5 hash: 155553264e98d58b0eaa075b1c3087f6
humanhash: sad-oven-undress-purple
File name:155553264e98d58b0eaa075b1c3087f6.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:7'288'320 bytes
First seen:2026-10-18 12:18:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/vnd.microsoft.portable-executable
imphash 7f1e4e467e885edeb4205ff07785238c (1 x QuasarRAT)
ssdeep 98304:ppI73gOsHBgsZ22sgPBvM9qANEfgExBrMSPDcjjFSQ5sP6HAxyEdguE4wAJ2:pi7whE2sgJvM9tNAgor9uSQ5S3bbLY
TLSH T11376338FE0ACE091CB581AB701DB794459EE31E41963879E4B73358AA51F9337F32B90
TrID 33.1% (.EXE) Win64 Executable (generic) (6522/11/2)
25.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
10.4% (.ICL) Windows Icons Library (generic) (2059/9)
10.3% (.EXE) OS/2 Executable (generic) (2029/13)
10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon 926ccc5616c86c93 (1 x QuasarRAT)
Reporter abuse_ch
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
235
Origin country :
SE SE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-10-18 12:24:04 UTC
Tags:
auto-reg confuser
Link:
https://app.any.run/tasks/2cbf003d-a9d3-47a4-b185-3b35f3d5ab75

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/92498/
Detection(s):
SecuriteInfo.com.Trojan.Siggen36.19513.3571.118.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6ad4b9448ce34a8cc3c93c18
Tags:
vmdetect virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Creating a process from a recently created file
Creating a window
Creating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
DNS request
Setting a keyboard event handler
Deleting a recently created file
Connection attempt
Sending a custom TCP request
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049
Verdict:
Malicious
File Type:
exe x64
First seen:
2026-10-14T23:59:00Z UTC
Last seen:
2026-10-19T19:03:00Z UTC
Hits:
~10
Link:
https://opentip.kaspersky.com/8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a132eba4-b1a0-4bee-9c27-1c34f6479283
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1988556
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
Contain functionality to detect virtual machines
Found API chain indicative of debugger detection
Found direct / indirect Syscall (likely to bypass EDR)
Found evasive API chain (may stop execution after checking computer name)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential Privilege Escalation using Task Scheduler highest RunLevel
Sample uses string decryption to hide its real strings
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1988556 Sample: bS88GSDhui.exe Startdate: 18/10/2026 Architecture: WINDOWS Score: 100 42 strata-victor.ddns.net 2->42 44 eip-terr-na.cdp1.digicert.com.akahost.net 2->44 58 Found malware configuration 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 Yara detected Quasar RAT 2->62 66 4 other signatures 2->66 10 bS88GSDhui.exe 1 2->10         started        14 DesktopCommander.exe 4 2->14         started        signatures3 64 Uses dynamic DNS services 42->64 process4 file5 40 C:\Users\user\AppData\...\bcomsa-6de0c728.dat, PE32 10->40 dropped 76 Found evasive API chain (may stop execution after checking computer name) 10->76 78 Found API chain indicative of debugger detection 10->78 80 Contain functionality to detect virtual machines 10->80 82 3 other signatures 10->82 16 bcomsa-6de0c728.dat 6 10->16         started        20 conhost.exe 14->20         started        signatures6 process7 file8 38 C:\Users\user\...\DesktopCommander.exe, PE32 16->38 dropped 48 Antivirus detection for dropped file 16->48 50 Multi AV Scanner detection for dropped file 16->50 52 Uses schtasks.exe or at.exe to add and modify task schedules 16->52 56 2 other signatures 16->56 22 DesktopCommander.exe 3 16->22         started        26 schtasks.exe 1 16->26         started        28 conhost.exe 16->28         started        54 Installs a global keyboard hook 20->54 signatures9 process10 dnsIp11 46 strata-victor.ddns.net 187.13.59.186, 49713, 49714, 49715 VtalBR Brazil 22->46 68 Antivirus detection for dropped file 22->68 70 Multi AV Scanner detection for dropped file 22->70 72 Hides that the sample has been downloaded from the Internet (zone.identifier) 22->72 74 Installs a global keyboard hook 22->74 30 schtasks.exe 1 22->30         started        32 conhost.exe 22->32         started        34 conhost.exe 26->34         started        signatures12 process13 process14 36 conhost.exe 30->36         started       
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/155553264e98d58b0eaa075b1c3087f6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049/
Threat name:
Win64.Trojan.AdvML
Create hunting rule
Status:
Malicious
First seen:
2026-10-15 12:58:00 UTC
File Type:
PE+ (Exe)
Extracted files:
7
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rjcc7r7bm2yk6lvxj6wzaph3qukryw4pq3uzjqbxnevhwwzjqbeq._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery execution persistence
Link:
https://tria.ge/reports/261018-pg9q2sxs5r/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Reads the TCP/IP host and domain name from the registry
ConfuserEx .NET packer
Suspicious use of NtSetInformationThreadHideFromDebugger
Executes dropped EXE
Unpacked files
SH256 hash:
8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049
MD5 hash:
155553264e98d58b0eaa075b1c3087f6
SHA1 hash:
9f9260dee736434e780d2fa6b6651c3c057b3df5
Link:
https://www.unpac.me/results/556f796e-e79f-410e-a084-e7744e0086bb/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8a442fc7e166/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8a442fc7e166b0af2eb74fad903cfb85151c5b8f86e994c037692a7b5b298049

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:test_rule_vldslv
Create hunting rule
Rule name:TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE
Create hunting rule
Author:CYFARE
Description:Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:https://cyfare.net/
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/92498/

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