MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3. 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: 19

Intelligence 19 IOCs YARA 39 File information Comments

SHA256 hash:	441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3
SHA3-384 hash:	81382f95bee5f715d3849e1b26c8dd218b842e70e49cc74b92724d6357864952ab8e3df085d9fcc88c8070230872a1c3
SHA1 hash:	af1e4824a0a4954c69fe91b6ad54e66a4f3a7511
MD5 hash:	15fe2ac3357c534e280cc8d9de964aed
humanhash:	butter-hamper-ack-white
File name:	zapytanie 2025.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	702'976 bytes
First seen:	2025-01-13 09:01:22 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:r8dStNKcItS4StNKcItSfl12tZ9uLUxL7HNHJTs2aInH5am38Dj11WWh2fab8fXk:r8yNK1t4NK1tOqLBCIHom383WxfaoXpe
Threatray	2'958 similar samples on MalwareBazaar
TLSH	T1EBE4F1203A9ADB03C0A66FF41521E2B457B45E8DAA21D3079FDA3DEF7C77B042944A53
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
Reporter	Anonymous
Tags:	AsyncRAT exe

Intelligence

File Origin

# of uploads :

# of downloads :

441

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

zapytanie 2025.exe

Verdict:

Malicious activity

Analysis date:

2025-01-13 09:03:02 UTC

Tags:

rat asyncrat remote netreactor

Link:

https://app.any.run/tasks/cd823b1b-1cbe-4578-b4d8-b18b273f60b8

Note:

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

Detection(s):

Win.Dropper.Nanocore-10025638-0

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6784d68d4487910100de7d7e

Tags:

asyncrat nanocore

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Сreating synchronization primitives

Connection attempt

Sending a custom TCP request

Using the Windows Management Instrumentation requests

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

nanocore obfuscated packed packed packer_detected vbnet

Link:

https://www.filescan.io/uploads/6784d6947c7460158e6ba78d/reports/9c074ff6-9af7-477b-a274-6f0b29a23279/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3

Result

Verdict:

UNKNOWN

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Malware family:

Agent Tesla

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6e5b24c1-0052-4aaf-bc87-b0848b460c12

Result

Threat name:

AsyncRAT, PureLog Stealer

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1589896

Signature

AI detected suspicious sample

C2 URLs / IPs found in malware configuration

Found malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

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

Yara detected AntiVM3

Yara detected AsyncRAT

Yara detected Generic Downloader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3

Detection:

asyncrat

Link:

https://mwdb.cert.pl/sample/441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3/

Threat name:

ByteCode-MSIL.Backdoor.Asyncrat

Status:

Malicious

First seen:

2025-01-13 05:48:39 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=iqoiy47kh54bo5hj5zue2tkrcj7monwj7nsch6wqv2ranfnl2pbq._file

Verdict:

malicious

Label(s):

unknown_loader_037

asyncrat

AsyncRAT

512eae984c0fd479fdcd2f73253fc52adeed18d104dff390b5b9563b3ca8dff5

AsyncRAT

51f3f7d8ac847527e0652b7841b3f37844b24f1e5b206af23debd479b8aa6a86

AsyncRAT

85b4167417d416880d3e9f1ff438e1e5b125ceb28de4e3ebd9b5725717815157

AsyncRAT

9085e6327177bb47cf43a8d8ed0c24fcfd50cde4199c5130f2b97b2508e9aabc

AsyncRAT

a2b83ca2802947ffbb1b191ee1b8326d4dcbac5f4d99bbb25ba816717b50fa3c

AsyncRAT

error

AsyncRAT

+ 2'948 additional samples on MalwareBazaar

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:coke discovery rat

Link:

https://tria.ge/reports/250113-kzftgaylfl/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

System Location Discovery: System Language Discovery

Suspicious use of SetThreadContext

AsyncRat

Asyncrat family

Malware Config

C2 Extraction:

quin.ydns.eu:1962
quin.ydns.eu:1940
185.38.142.240:1962
185.38.142.240:1940

Verdict:

Malicious

Tags:

Win.Dropper.Nanocore-10025638-0

YARA:

n/a

Link:

https://app.threat.zone/submission/13abdaec-3bcc-43c5-bdd7-f2ba6fd8ce4e

Unpacked files

SH256 hash:

eb3e901086b542a11ae10961a8406eab24c5984d0ec46ef02cc39358f3d3f069

MD5 hash:

962c265b56e5e33684f2a159a568c443

SHA1 hash:

82215215023d4e663dcc74a093190c53ac540d1c

Detections:

AsyncRAT

win_asyncrat_w0

asyncrat

win_asyncrat_bytecodes

win_asyncrat_unobfuscated

INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse

Link:

https://www.unpac.me/results/8990f824-8d15-4e76-bb11-fe8b6fa12649/

Parent samples :

e64bf07778d6213ab62a2e94e764053d4378192b836715aa6552405de1e15832
441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3
dda88b2f3e4fc0dd679df66662d77aaedaeed19d542fab5171f54e0b01869461

SH256 hash:

fe51d1ef738267a69347af0c3a0024af09a70a0abc838b3834aa5a7222b79e65

MD5 hash:

d53ee2cefd2a3ccd0376316f79ab4971

SHA1 hash:

60ae9feb3406911561dfd1c4f678b46202414db1

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/8990f824-8d15-4e76-bb11-fe8b6fa12649/

SH256 hash:

fe26a8a1df970da362283c68cfb162d4f1acc95a82ef2e8046a567083e658465

MD5 hash:

cd4c77cd32b55506c5682eba826ef4fa

SHA1 hash:

2205c17610803a3dbc2523a753f17cf9de0bc5b2

Detections:

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/8990f824-8d15-4e76-bb11-fe8b6fa12649/

Parent samples :
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SH256 hash:

441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3

MD5 hash:

15fe2ac3357c534e280cc8d9de964aed

SHA1 hash:

af1e4824a0a4954c69fe91b6ad54e66a4f3a7511

Link:

https://www.unpac.me/results/8990f824-8d15-4e76-bb11-fe8b6fa12649/

Malware family:

AsyncRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/441c8c73ea3f/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/441c8c73ea3f781774e9ee684d4d51127ec736c9fb6423fad0aea20695abd3c3

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:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

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

Rule name:	asyncrat_kingrat Create hunting rule
Author:	jeFF0Falltrades

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:	malware_asyncrat Create hunting rule
Description:	detect AsyncRat in memory
Reference:	https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp

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_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_Generic_Threat_ce98c4bc Create hunting rule
Author:	Elastic Security

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

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.

No further information available

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 (HIGH_ENTROPY_VA)	high

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