MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 04a93feba4c974ab3c7fe203d68f78bc3b8b395492fdecc0b3fefadfd74dcac4. 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 22 File information Comments 1

SHA256 hash: 04a93feba4c974ab3c7fe203d68f78bc3b8b395492fdecc0b3fefadfd74dcac4
SHA3-384 hash: 940b5b7c0d5745fc1f40b5c53d59dcbe50edfa48a03e9a4bd41fd89340c0c6e299b93a1347814181f4072b66022fdd21
SHA1 hash: e13ad8dfd75146975e5f5dacd0ba86135227c799
MD5 hash: edbf6050801a49a4700ed466f3953964
humanhash: snake-enemy-north-yankee
File name:hitclub.nagoya_33542079_s_flash-player.exe
Download: download sample
Signature AsyncRAT
File size:29'184 bytes
First seen:2026-06-10 10:45:37 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'067 x AgentTesla, 20'020 x Formbook, 12'352 x SnakeKeylogger)
ssdeep 384:4OARLVZsLqm+TD8uoAl6eDOS3H9qbuUs1QxnCJfTKzFdnjJUf99E:xAJULl+TwuoAMKIb7BuKzFE99E
TLSH T14FD23A0833D98691D2FE4A7D4873C6148376E6974E13DB9A6FC4909E2E237C8CE14BE0
TrID 70.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.2% (.EXE) Win64 Executable (generic) (6522/11/2)
4.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter mgoku
Tags:AsyncRAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
111
Origin country :
US US
Vendor Threat Intelligence
Malware family:
asyncrat
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-06-10 10:46:17 UTC
Tags:
asyncrat

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Tags:
asyncrat autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Сreating synchronization primitives
DNS request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm base64 fingerprint lolbin obfuscated reconnaissance schtasks vbnet
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-06-10T07:05:00Z UTC
Last seen:
2026-06-12T03:24:00Z UTC
Hits:
~100
Detections:
Backdoor.MSIL.Crysan.sb Backdoor.MSIL.Crysan.d Backdoor.MSIL.Crysan.c Backdoor.MSIL.Crysan.b HEUR:Backdoor.MSIL.SheetRat.gen HEUR:Backdoor.MSIL.Crysan.gen
Gathering data
Threat name:
Win32.Backdoor.AsyncRAT
Status:
Malicious
First seen:
2026-06-10 10:46:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
asyncrat
Similar samples:
Result
Malware family:
asyncrat
Score:
  10/10
Tags:
family:asyncrat discovery rat
Behaviour
Suspicious use of AdjustPrivilegeToken
System Location Discovery: System Language Discovery
Family: AsyncRat
Unpacked files
SH256 hash:
04a93feba4c974ab3c7fe203d68f78bc3b8b395492fdecc0b3fefadfd74dcac4
MD5 hash:
edbf6050801a49a4700ed466f3953964
SHA1 hash:
e13ad8dfd75146975e5f5dacd0ba86135227c799
Detections:
win_asyncrat_w0 AsyncRAT
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:kevoreilly, JPCERT/CC Incident Response Group
Description:AsyncRat Payload
Rule name:asyncrat
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:AsyncRAT_057B
Author:kirkderp
Description:AsyncRAT 0.5.7B -- minimal .NET RAT with PBKDF2 key derivation and MessagePack serialization
Reference:https://github.com/kirkderp/yara
Rule name:asyncrat_kingrat
Author:jeFF0Falltrades
Rule name:DebuggerCheck__RemoteAPI
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:malware_asyncrat
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:malware_asyncrat
Description:detect AsyncRat in memory
Reference:https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp
Rule name:MALWARE_Win_AsyncRAT
Author:ditekSHen
Description:Detects AsyncRAT
Rule name:msil_suspicious_use_of_strreverse
Author:dr4k0nia
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Rule name:Multifamily_RAT_Detection
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Author:malware-lu
Rule name:Njrat
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_DOTNET_PE_List_AV
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
Rule name:SUSP_Reverse_Run_Key
Author:SECUINFRA Falcon Team
Description:Detects a Reversed Run Key
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:VECT_Ransomware
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.
Rule name:Windows_Generic_Threat_ce98c4bc
Author:Elastic Security
Rule name:win_asyncrat_unobfuscated
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
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.

Comments



Avatar
commented on 2026-06-10 10:51:10 UTC

RAT King Parser (https://github.com/jeFF0Falltrades/rat_king_parser) Output:

{
"sha256": "04a93feba4c974ab3c7fe203d68f78bc3b8b395492fdecc0b3fefadfd74dcac4",
"yara_possible_family": "asyncrat",
"key": "None",
"salt": "None",
"config": {
"Ports": [
"6606"
],
"Hosts": [
"hitclub.nagoya"
],
"BeaconUrls": "https://hitclub.nagoya,https://www.hitclub.nagoya,https://c2.hitclub.nagoya,https://malware.hitclub.nagoya,https://botnet.hitclub.nagoya,https://trojan.hitclub.nagoya,https://cs.hitclub.nagoya",
"Version": "0.5.7B",
"Install": "false",
"InstallFolder": "AppData",
"InstallFile": "Test.exe",
"Key": "NYAN CAT",
"Mutex": "%MTX%",
"Certificate": "%Certificate%",
"Serversignature": "%Serversignature%",
"Anti": "false",
"Pastebin": "null",
"BDOS": "false",
"Delay": "0",
"Group": "Debug"
}
}