MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c
SHA3-384 hash: b991d7ac237c726111d04fcb6d506e928006983c5832ada43c77b54ad51c773266a181c935b18b59d2e7fcd51da3d9e0
SHA1 hash: ad10de9a87c445eb58c1b1f93687de32a145f70e
MD5 hash: 34523f29c73cad7305f5125a58ccceba
humanhash: minnesota-rugby-one-fanta
File name:instagramunban.bat
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'209'644 bytes
First seen:2025-08-26 08:57:34 UTC
Last seen:Never
File type:Batch (bat) bat
MIME type:text/x-msdos-batch
ssdeep 24576:i//b4fS2+Z5ja8COzxVjP/9RVWtAYea2SDKXcyflhSZxnCJrCAw9cxFTZgyMR0A7:aD46jZJ7bVJY2htSDqZx1dZeMNpmaWp
Threatray 106 similar samples on MalwareBazaar
TLSH T1ECA5221D5B280EFEC96C1714B12F4D9CFBAF5BB0E8D898D7437CB88A3394252585B816
Magika batch
Reporter smica83
Tags:bat QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
41
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
instagramunban.bat
Verdict:
Malicious activity
Analysis date:
2025-08-26 08:59:14 UTC
Tags:
crypto-regex
Link:
https://app.any.run/tasks/3180bd4a-c869-4de6-86bb-7d1aeb1b67bd

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/23609/
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68ad773c3e988eb6ab82bcac
Tags:
vmdetect shell overt spawn
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm evasive net obfuscated powershell
Link:
https://www.filescan.io/uploads/68ad77294a87ed79676c0446/reports/24778e4b-b674-4c97-b542-de76ee9a2791/overview
Verdict:
Malicious
Labled as:
TrojanDropper/BAT.Agent
Link:
https://www.hybrid-analysis.com/sample/128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c
Verdict:
Clean
File Type:
cmd
Link:
https://opentip.kaspersky.com/128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c/results?tab=lookup
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1765253
Signature
Bypasses PowerShell execution policy
Found large BAT file
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 submitted file
Sample uses string decryption to hide its real strings
Sigma detected: HackTool - CrackMapExec PowerShell Obfuscation
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: Suspicious PowerShell Parameter Substring
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected Powershell decode and execute
Yara detected Powershell decrypt and execute
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1765253 Sample: instagramunban.bat Startdate: 26/08/2025 Architecture: WINDOWS Score: 100 24 Found malware configuration 2->24 26 Malicious sample detected (through community Yara rule) 2->26 28 Multi AV Scanner detection for submitted file 2->28 30 9 other signatures 2->30 7 cmd.exe 1 2->7         started        10 svchost.exe 1 1 2->10         started        process3 dnsIp4 32 Suspicious powershell command line found 7->32 34 Bypasses PowerShell execution policy 7->34 13 powershell.exe 16 7->13         started        16 net.exe 1 7->16         started        18 conhost.exe 7->18         started        22 127.0.0.1 unknown unknown 10->22 signatures5 process6 signatures7 36 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 13->36 38 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->38 40 Installs a global keyboard hook 13->40 20 net1.exe 1 16->20         started        process8
Score:
99%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c
Threat name:
ByteCode-MSIL.Trojan.Heracles
Create hunting rule
Status:
Malicious
First seen:
2025-08-26 01:39:07 UTC
File Type:
Text (PowerShell)
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ckfvmtkiqyx6rb6m5o3ekqwgniu3tfb63c6hrav3woms2t7epewa._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
5bf621e8d7c8590e3a2a5bb9779b5458b28f85b8887076b4a4885d1ee3e2c7f0
QuasarRAT
64c1129ca7275f7314d04103c36d6193a1c1720a529dac1fc305872a37129d51
QuasarRAT
cb6b2c09cea22a69b1a265c20b9972b73e9663b59527850bb4b02d1e62986c04
QuasarRAT
error
QuasarRAT
fefcf51745f418e4d6d8d4a62dd2bf723ab2bb21c5965523ecd0e670eec1f9aa
QuasarRAT
+ 96 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar defense_evasion execution spyware trojan
Link:
https://tria.ge/reports/250826-kw9x5sdk41/
Behaviour
Runs net.exe
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Badlisted process makes network request
Command and Scripting Interpreter: PowerShell
Modifies trusted root certificate store through registry
Quasar RAT
Quasar family
Quasar payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/128b564d48862fe887ccebb64542c66a29b9943ed8bc7882bbb3992d4fe4792c

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:botnet_plaintext_c2
Create hunting rule
Author:cip
Description:Attempts to match at least some of the strings used in some botnet variants which use plaintext communication protocols.
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
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/23609/

Comments