MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55. 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: 15

Intelligence 15 IOCs 1 YARA 17 File information Comments

SHA256 hash:	00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55
SHA3-384 hash:	2996c754ba249bcc3ce3251a6e59a328a813683da518c6b3a52560a9ff4f6e78a25745a89f0e1629f6613287aaabfd6b
SHA1 hash:	babbb2fc8e93f0446e2d2b422796d7505c45ae56
MD5 hash:	253035165cb653bc074e414f70aa0690
humanhash:	summer-undress-helium-may
File name:	253035165cb653bc074e414f70aa0690.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	6'038'528 bytes
First seen:	2025-07-28 07:20:09 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'602 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	98304:CiNeo/6bEhnJhWotJOEOMfh8mqpZQoZNn2KiRL77LrwkpeaOhlWGmJ/SRM17Lbtc:C/o/6bEhnJhWotJOEOMfh8mqpZQoZNno
Threatray	113 similar samples on MalwareBazaar
TLSH	T17556E05AF1DDCE72C7C62776DAE606440770C5616702E30A3ADB2276A8077E64E4F2CB
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
Reporter	abuse_ch
Tags:	exe QuasarRAT RAT

abuse_ch

QuasarRAT C2:
212.224.107.183:3606

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
212.224.107.183:3606	https://threatfox.abuse.ch/ioc/1561580/

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

quasar

ID:

File name:

253035165cb653bc074e414f70aa0690.exe

Verdict:

Malicious activity

Analysis date:

2025-07-28 07:24:39 UTC

Tags:

pastebin evasion rat quasar remote zgrat netreactor crypto-regex

Link:

https://app.any.run/tasks/77395e76-25b2-4285-b48b-1b2f1c4a7995

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/17274/

Detection(s):

Win.Malware.Bulz-9933026-0

Win.Malware.Generic-6623004-0

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=688724df0b4775fb2132937d

Tags:

vmdetect asyncrat quasar emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Setting a keyboard event handler

DNS request

Connection attempt

Sending a custom TCP request

Using the Windows Management Instrumentation requests

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/b4c27f02-51b2-4acf-af8a-51092b500701

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1745379

Signature

.NET source code contains method to dynamically call methods (often used by packers)

Antivirus / Scanner detection for submitted sample

Connects to a pastebin service (likely for C&C)

Found malware configuration

Hides that the sample has been downloaded from the Internet (zone.identifier)

Installs a global keyboard hook

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Suricata IDS alerts for network traffic

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Yara detected Costura Assembly Loader

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55

Gathering data

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55/

Verdict:

Malicious

Threat:

Trojan.MSIL.Quasar

Link:

https://tip.neiki.dev/file/00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55

Threat name:

Win32.Backdoor.Quasar

Status:

Malicious

First seen:

2025-07-24 22:37:09 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

25 of 38 (65.79%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ac2cielc5auplhq2i5dhzxwnbq3po6pb4w34jeydgheras3odrkq._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

2c9a9dad74ed9892e2d73dc8a1bbfcdd46d6d9d54a4625a803842d734a5a8ec2

QuasarRAT

4b6d48db1e119ca273ec53df4167767c48ba8adbe0f3ee05996717a119f244c7

QuasarRAT

6ce2462286dc687b1ccab7592a3a68c0504b2639e28cfb8a849e0cd12763fea0

QuasarRAT

9019276cf50b5e8397a04c81e75faf35308f2dd7b480db9a060e1c50e66678f2

QuasarRAT

9a1a07caef95485ed3b67cee28cd179755ae10003978601bf3173c31ea5b603b

QuasarRAT

error

QuasarRAT

+ 103 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

6/10

Tags:

defense_evasion spyware trojan

Link:

https://tria.ge/reports/250728-h6e5eacl4z/

Behaviour

Modifies system certificate store

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Legitimate hosting services abused for malware hosting/C2

Verdict:

Malicious

Tags:

Win.Malware.Bulz-9933026-0

YARA:

n/a

Link:

https://app.threat.zone/submission/a311e2cf-371b-42cd-ba28-fd007eb6a57e

Unpacked files

SH256 hash:

00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55

MD5 hash:

253035165cb653bc074e414f70aa0690

SHA1 hash:

babbb2fc8e93f0446e2d2b422796d7505c45ae56

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

a0af255ea4b09a8cdb995b8c6fd1075e46f098e23c2351c974e6ded9b8b620cf

MD5 hash:

c52a44933d17d576d4c97b4cb0545841

SHA1 hash:

092696fdcc034910aa02c94a5c93f4e1e86e0c50

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

Parent samples :
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SH256 hash:

749a01ebbb5edd8b1a03c5263b04de6acadecf52e4cc84d7412bc6e93f180958

MD5 hash:

faf1ba532964984a34d60674fbc7a5a7

SHA1 hash:

0999178949de510a47d87de3b8a117a003c572ee

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

d5235265564f0bfd23b7279d7bdccc9ea6383ed07c5d0bfdf6c99029af9a2c0c

MD5 hash:

1d3dd9fcc077e6b4f88c05b9aef53ee6

SHA1 hash:

12b33858bc84f54b8aa8dbcb5a0ec2da043a6f66

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

3c6af5eb8124bc96b1919abd04f6057c7361f360fedbe4ca7b23649d2c021496

MD5 hash:

9a6435eb60261911930eb811cca0b71f

SHA1 hash:

1604baf25f6ef7253bf70238f9957f32fb59ed0d

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

289e54620f3f97cab6cb7c20c96b3cedfd0a7bc8c9c145016b41eee39ab60448

MD5 hash:

d5b81e817106b9f9159c5ab5f8d73268

SHA1 hash:

185459c754e7a14dc9ea866f157dcf1fab12d862

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

268b44a78354f7a225e5b1567223179c7b73453c0a27eb4bf18bb57d7a8e08d9

MD5 hash:

66aeaaba0629daf8544afc8008079386

SHA1 hash:

1e09e5d24e1aa3d1700b265c6ff94b7524813f4d

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

8aec219296a1c2340db662cd4b0b173cdbe2564de8bddbf7d96b3b2deade7b74

MD5 hash:

4924e73ce4573519c195954d5b7bc2f5

SHA1 hash:

396940b334f64afd37355167a7d6f4e9843fcf12

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

6ebb8346945e16a8fee9b6e680f36a8dfc6252fc10b4aa4e27f08cae2ae24657

MD5 hash:

882de54975d1e3c1a18cf944fb4b73ba

SHA1 hash:

46e08a4fc1623fbb8671f3b971b142a7ae0b28f8

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

HKTL_NET_GUID_Quasar

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

613b0391a7b7107fc57b26951a3eccf3cc863bafa6d48a48b870c26399722057

MD5 hash:

f3fabe492cbf7c706fafb310be9797d4

SHA1 hash:

514c3182265c4cd028a123771ee81b9c8ca87d36

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

618ef0e49d64e7a66dfe64bbf6ae81705b9d9683d8a9f321e5c3024d666bdf82

MD5 hash:

278ebb79da14ecf8e0559530c2fda076

SHA1 hash:

8a45f0400f6bc46d254120345fd5e39b6c9b71a1

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

bc0243134c93c55ea105d0e9c2a43b6030e973290d0a061cf3a61986a2268a88

MD5 hash:

d2edde626c241549eab636aa87fb5d38

SHA1 hash:

8d836febd477b3ec44cc37f4f0aecdaa1d7db788

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

fcf493fc47a2f478a65303886b975fbdbf714cbb1f2d79f7fce97e4bb16b01a8

MD5 hash:

48867f392b8e77dc06c062638c6fbd36

SHA1 hash:

ccc0931e2cf3d6d79e24c1f28d9c96b40c131af6

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

SH256 hash:

56f525e33494f4cd2a560a71cdf237303a3fb54a8fa44e1693eba35c9245c60a

MD5 hash:

07137e5cc4d5ecc95ca267c9dce042d4

SHA1 hash:

d82f5e3d718bc9172fcfe0e8c50cb20251762058

Link:

https://www.unpac.me/results/d3dbf92e-c567-4fb0-a6d4-0d7239e5a101/

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/00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55

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:	Costura_Protobuf Create hunting rule
Author:	@bartblaze
Description:	Identifies Costura and Protobuf in .NET assemblies, respectively for storing resources and (de)serialization. Seen together might indicate a suspect binary.

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__QueryInfo Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerHiding__Thread Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Detect_PowerShell_Obfuscation Create hunting rule
Author:	daniyyell
Description:	Detects obfuscated PowerShell commands commonly used in malicious scripts.

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	Indicator_MiniDumpWriteDump Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects PE files and PowerShell scripts that use MiniDumpWriteDump either through direct imports or string references

Rule name:	Lumma_Stealer_Detection Create hunting rule
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:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	pe_imphash Create hunting rule

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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

https://www.capesandbox.com/analysis/17274/

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Comments

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