MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1. 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

AsyncRAT

Vendor detections: 18

Intelligence 18 IOCs 1 YARA 26 File information Comments

SHA256 hash:	cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1
SHA3-384 hash:	a7cb37bc8724b6fd64cbb22884c1e4dba626e83f8fc09b486b9f435f9c1862a4be0f07e7beca6c664ebc55a0b67a883e
SHA1 hash:	fea645365c3d52c8b06931008f545c7978cf4d5d
MD5 hash:	60d64e930f5f7f1eadee1037680811df
humanhash:	aspen-two-moon-video
File name:	cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	912'384 bytes
First seen:	2025-07-31 11:34:23 UTC
Last seen:	2025-07-31 11:34:30 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	12288:Yufu8wTqSfW504VVVgPp6HWeCPDZXiC8B7Qoh2Xqu10r:YuJdS+504VVVgPSWzFX6VQ6E0
Threatray	4'096 similar samples on MalwareBazaar
TLSH	T1F21506E291A508A5D4B35D718822E8333256AC9AD82385188ED7FF5BF5F3ED31C23947
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	8e8f0f0f964d4d2c (4 x Formbook, 3 x AgentTesla, 3 x SnakeKeylogger)
Reporter	JAMESWT_WT
Tags:	196-251-88-252 AsyncRAT exe

Indicators Of Compromise (IOCs)

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

IOC	ThreatFox Reference
196.251.88.252:19803	https://threatfox.abuse.ch/ioc/1561840/

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1

Verdict:

Malicious activity

Analysis date:

2025-07-31 11:48:03 UTC

Tags:

auto-reg asyncrat

Link:

https://app.any.run/tasks/1cf2f681-d13e-4e7b-ba0d-1f9fca83fd6b

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

AsyncRAT

Link:

https://www.capesandbox.com/analysis/18012/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=688b54fdaf3050dc8d32b3cd

Tags:

autorun micro shell sage

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Searching for synchronization primitives

Restart of the analyzed sample

Creating a file

Running batch commands

Creating a process with a hidden window

Creating a file in the %AppData% directory

Creating a file in the %temp% directory

Launching a process

Creating a process from a recently created file

Connection attempt

Unauthorized injection to a recently created process

Unauthorized injection to a recently created process by context flags manipulation

Enabling autorun by creating a file

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1

Malware family:

KeyBase

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/398f739c-c925-429b-a287-a50e894848c9

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1

Verdict:

inconclusive

YARA:

10 match(es)

Tags:

.Net Executable PDB Path PE (Portable Executable) SOS: 0.23 Win 32 Exe x86

Link:

https://app.malva.re/file/60d64e930f5f7f1eadee1037680811df

Detection:

asyncrat

Link:

https://mwdb.cert.pl/sample/cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1/

Threat name:

ByteCode-MSIL.Backdoor.Asyncrat

Status:

Malicious

First seen:

2025-07-30 08:35:50 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 38 (63.16%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=zwizbdtpd4zayilhhdjtk74us5a5gwzmfmr7vbh34sbnjpuefsyq._file

Verdict:

malicious

Label(s):

asyncrat

unc_loader_037

AsyncRAT

ba656c76c7366c1aab95e735327f076b9cef77c442c2598fe2182c5eeb61eb36

AsyncRAT

cb5e4bef238dac81147bf25ccaa761000470bdfbd565f54a6e5915ce6983242a

AsyncRAT

ecc76e448179411f5da32df012b94265f90dcb76366dff2a728a34405a0a2ba6

AsyncRAT

+ 4'086 additional samples on MalwareBazaar

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:default defense_evasion discovery execution persistence rat

Link:

https://tria.ge/reports/250731-np7qzshk5z/

Behaviour

Delays execution with timeout.exe

Scheduled Task/Job: Scheduled Task

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

Checks computer location settings

Executes dropped EXE

AsyncRat

Asyncrat family

Malware Config

C2 Extraction:

127.0.0.1:19803
196.251.88.252:19803

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/84e5c1b3-f1c7-4e40-b9b8-70e17cee1805

Unpacked files

SH256 hash:

cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1

MD5 hash:

60d64e930f5f7f1eadee1037680811df

SHA1 hash:

fea645365c3d52c8b06931008f545c7978cf4d5d

Link:

https://www.unpac.me/results/656f5c9c-c5ca-48e3-8eae-40d7f74870e0/

SH256 hash:

278bcb3053256447c4039100b8c18a4170ba869dd7accdcde7ffffe7f6571315

MD5 hash:

11a316f1cd540617b55691c0159c956a

SHA1 hash:

676710df9591ef44a02185f0b07520413dd0f511

Link:

https://www.unpac.me/results/656f5c9c-c5ca-48e3-8eae-40d7f74870e0/

SH256 hash:

89533b646ab57ed86d8ad4974ce4653501cd0366d26b692227b0e1dfca81f685

MD5 hash:

ff4f23e6d6beb29c5bd6ce29bf467cea

SHA1 hash:

70ea16130141c45f5619e147555ead95b4337d07

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/656f5c9c-c5ca-48e3-8eae-40d7f74870e0/

SH256 hash:

f68d8d8881493aef1641ea5dd67584be6f33a871fa81019c420d442a2f7ab41d

MD5 hash:

c26466e32db0ba9330ed1aa9f0008d87

SHA1 hash:

f0d17f5320289675d06b6306b371327aeae5fd9d

Detections:

win_asyncrat_w0

AsyncRAT

asyncrat

win_asyncrat_bytecodes

INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

Link:

https://www.unpac.me/results/656f5c9c-c5ca-48e3-8eae-40d7f74870e0/

Parent samples :

63a03d1998b2024f980c66873113d4cbd74262cfb1b4c0768246e38928db4b64
ecc76e448179411f5da32df012b94265f90dcb76366dff2a728a34405a0a2ba6
ba656c76c7366c1aab95e735327f076b9cef77c442c2598fe2182c5eeb61eb36
cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1
47f70c5d74fb0c00ee39f86290744df6403b87e94ecfd613202b5ed5988c8970
0c45dbdaf171ab11f54426e63e1a7e8b2b7533c8df13382745cb674368ccea43

Malware family:

AsyncRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/cd91908e6f1f/report/overview.html

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/cd91908e6f1f320c216738d3357f949741d35b2c2b23fa84fbe482d4be842cb1

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:	AsyncRat Create hunting rule
Author:	kevoreilly, JPCERT/CC Incident Response Group
Description:	AsyncRat Payload

Rule name:	AsyncRAT_ Create hunting rule
Author:	Michelle Khalil
Description:	This rule detects unpacked AsyncRAT malware samples.

Rule name:	asyncrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

Rule name:	BlackGuard_Rule Create hunting rule
Author:	Jiho Kim
Description:	Yara rule for BlackGuarad Stealer v1.0 - v3.0
Reference:	https://www.virustotal.com/gui/file/67843d45ba538eca29c63c3259d697f7e2ba84a3da941295b9207cdb01c85b71/detection

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

Rule name:	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse Create hunting rule
Author:	ditekSHen
Description:	Detects file containing reversed ASEP Autorun registry keys

Rule name:	INDICATOR_SUSPICIOUS_EXE_Embedded_Gzip_B64Encoded_File Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing bas64 encoded gzip files

Rule name:	malware_asyncrat Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

Rule name:	MAL_AsnycRAT Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects AsnycRAT based on it's config decryption routine

Rule name:	MAL_AsyncRAT_Config_Decryption Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects AsnycRAT based on it's config decryption routine

Rule name:	Mal_WIN_AsyncRat_RAT_PE Create hunting rule
Author:	Phatcharadol Thangplub
Description:	Use to detect AsyncRAT implant.

Rule name:	msil_suspicious_use_of_strreverse Create hunting rule
Author:	dr4k0nia
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse

Rule name:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

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

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

Rule name:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

Rule name:	pe_imphash Create hunting rule

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

Rule name:	SUSP_DOTNET_PE_List_AV Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detecs .NET Binary that lists installed AVs

Rule name:	SUSP_Reverse_Run_Key Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects a Reversed Run Key

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:	Windows_Trojan_Asyncrat_11a11ba1 Create hunting rule
Author:	Elastic Security

Rule name:	win_asyncrat_bytecodes Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects bytecodes present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)

Rule name:	win_asyncrat_j1 Create hunting rule
Author:	Johannes Bader @viql
Description:	detects AsyncRAT

Rule name:	win_asyncrat_w0 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

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/18012/

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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