MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14. 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 14 File information Comments

SHA256 hash:	89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14
SHA3-384 hash:	1e845748f117a7b5a494ab6df3d8801d65cd78541610e68fb2946feaa3dde73f247bed0d4912b5d0b4e56bc3bd4e74e3
SHA1 hash:	5f9e4d34cb343f3d67001f4d5bb29112958067d6
MD5 hash:	2b2105bd22b4aafb6d168ac3e1b0019f
humanhash:	magazine-monkey-berlin-skylark
File name:	2b2105bd22b4aafb6d168ac3e1b0019f.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	2'269'184 bytes
First seen:	2025-06-01 16:50:08 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep	24576:wqrojdJEkJ/7RePhzFxFdY5zYMRxdRR7mVTRTpkpHgWUA9xMoAXPWMtVImFOJQCn:Wd9mj7+xEVTjkplZxlitAmFWhIi4wH4
Threatray	1 similar samples on MalwareBazaar
TLSH	T1D7B5E042360CC911D06D5637DBEF45044FFCA9087A22DB1ABD8E7358E8A53AA1D4E1EF
TrID	46.3% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 19.7% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 6.6% (.EXE) Win64 Executable (generic) (10522/11/4) 4.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Magika	pebin
Reporter	abuse_ch
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

417

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

2b2105bd22b4aafb6d168ac3e1b0019f.exe

Verdict:

Malicious activity

Analysis date:

2025-06-01 16:50:37 UTC

Tags:

netreactor crypto-regex

Link:

https://app.any.run/tasks/c0c1fc6f-a21a-432b-be87-e4db684d5547

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/6700/

Detection(s):

Win.Malware.Bulz-9933026-0

Win.Malware.Generic-6623004-0

Verdict:

Malicious

Score:

96.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=683c8601acf88f5815eac5b3

Tags:

emotet packed virus remo

Result

Verdict:

Clean

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Connection attempt

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-vm base64 cryptor_detected hacktool net_reactor obfuscated obfuscated packed packed reconnaissance

Link:

https://www.filescan.io/uploads/683c84dae336a33801e1525a/reports/9c252947-8412-49a4-94c6-12a7af7ef52e/overview

Verdict:

Malicious

Labled as:

RiskWare[Obfuscator]/MSIL.Reactor

Link:

https://www.hybrid-analysis.com/sample/89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/1aacb9f4-03cb-49a7-af2b-c2432662cc0f

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.evad

Score:

92 / 100

Link:

https://www.joesandbox.com/analysis/1703429

Signature

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

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Found malware configuration

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

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

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/89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14/

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2025-05-28 23:37:00 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

28 of 37 (75.68%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=rgsz7xdnpyusvxwmsybk6fke5hlmp7nr7gpwksurruahiivjhuka._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

error

QuasarRAT

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/250601-vchdwsztd1/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: AddClipboardFormatListener

Verdict:

Malicious

Tags:

Win.Malware.Bulz-9933026-0

YARA:

n/a

Link:

https://app.threat.zone/submission/7ba5a739-1d00-4128-bd91-aab1ed51d891

Unpacked files

SH256 hash:

89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14

MD5 hash:

2b2105bd22b4aafb6d168ac3e1b0019f

SHA1 hash:

5f9e4d34cb343f3d67001f4d5bb29112958067d6

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

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/cb5a009a-9599-492b-8927-ed703addf825/

Parent samples :

78976f38ca4b4e62ead97e1222faa8ce79c0f9a517ef57bdeae4dc3f2c834d1b
818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585
50cb6b8d0f572cd355d682a3f3529854b98cc75e141e452c98bec0279ef1ace2
030c62f201281c0034102b3cab64490e51b0499a9b5fad498f1ded30b23dbf66
d65862ab1d8dfcba06ab6e1fc40d109d9c644cac4e02ef0c8fb30f96ec199b61
31e0765454785a12c86436331f67020b7390d16b9de42b954127799835eea36c
89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14
78daa33cb739c0b1648f17599695cf0fc5ad0b1c7640d55d91e1d534a024c6f7
c8b2df4130ad422d0dab2be3798677609f0555f37d825cda228662d2112f3d6c
6597d0a917f2def35809cfcffd7c9098bc7e97eb62d35fb74486344208faf61a
a77fed3715f635883d0e54c30ab4d3ccad5afe0f845d27e5bff0f9410df4aaee
f879f50e21830b34b77fd94a33b6c395b9837bb701a7f5e4dad2e9d287af9e72
0a45180f1b3ef2e81e988e448cbf6eb1ddedcd864a7ecf46ac5a28aef8f2740b
6c2b4ca9e169f3d71f3fa2962b947c0f7b1e358e2e7ce6c9ee12778e0679f6b1
eb72d6dd2158ce9ad453f8ecfd5d6900cce588c196ae5806268cbaf3475848da
00b4241162e828f59e1a47467cdecd0c36f779e1e5b7c4930331c9104b6e1c55

SH256 hash:

f3114bdee5ea04204aa403dee858b56802093f374edee3dac54cfd7884726f9f

MD5 hash:

25175492970d364bcd608ddebffc5b9c

SHA1 hash:

0f3c1e7aef8aacb6fdc90bfa0135702ed1e8c0ed

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

SH256 hash:

c58e58f73410059bb48edefd9fbb75d7565d3ff457f963d71b7038aba28491a6

MD5 hash:

6abe4d96700f4309b46a58675a7fe374

SHA1 hash:

2fec86d05234c405dfaf0e4d4b0a640939310fc0

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

SH256 hash:

4c9615496970ea84320e2a6e99f8fb828e3c7790384df5585d93fc368885d94e

MD5 hash:

50e6524b7ee9c2c93f5210b63cb1ca54

SHA1 hash:

3e296ec3bb24750833ea80515e6fb4c73874c91a

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

SH256 hash:

53b77d478a5f78f09ef805b254bc6e7b5faa9e735a27177593a2e2a681264784

MD5 hash:

145fa70b825233562e6277225a24ea6f

SHA1 hash:

9994d5b9bf6d1e076e7f9be8ef39c62d551d8fe9

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

SH256 hash:

5aebc3fcfbc3d24d5ab72cdbb82e12b071214669b22a504a25e283401936179a

MD5 hash:

63012e1400a1453bac4d4b2318203a15

SHA1 hash:

d05d19b91255a10305cec448a22b11c106a006cb

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

HKTL_NET_GUID_Quasar

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

SH256 hash:

77c5f86784884137784f177389511b07b15dfc38523ac12d3ac1cd31dcf5bce8

MD5 hash:

7afb100348329d46afa8022c15eebbbb

SHA1 hash:

fbde60a6f3fdcd89f14f2898f7d63a1db2ba9dd3

Link:

https://www.unpac.me/results/cb5a009a-9599-492b-8927-ed703addf825/

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/89a59fdc6d7e292adecc9602af1544e9d6c7fdb1f99f654a918d007422a93d14

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

Rule name:	DotNet_Reactor Create hunting rule
Author:	@bartblaze
Description:	Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.

Rule name:	INDICATOR_EXE_Packed_Fody Create hunting rule
Author:	ditekSHen
Description:	Detects executables manipulated with Fody

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:	PureCrypter Create hunting rule
Author:	@bartblaze
Description:	Identifies PureCrypter, .NET loader and obfuscator.
Reference:	https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter

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)

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/6700/

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

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