MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fa23a1aa287992ff7636622d1158ad740d0fda313d5e9e07de5f0e3fecfa889a. 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: 21


Intelligence 21 IOCs YARA 23 File information Comments 1

SHA256 hash: fa23a1aa287992ff7636622d1158ad740d0fda313d5e9e07de5f0e3fecfa889a
SHA3-384 hash: 9d162aeabf0797b15453f2720fb8803fbfa29d53780e20c47e6cd7a92af8ab0f338694c1b34f388db609c66daad52885
SHA1 hash: 9c1b71b7c965afe4075e81af8ff050c7649e703b
MD5 hash: 05aff2b6242e9b2618ade8d34178d46a
humanhash: video-november-beer-purple
File name:fa23a1aa287992ff7636622d1158ad740d0fda313d5e9e07de5f0e3fecfa889a
Download: download sample
Signature AsyncRAT
File size:48'640 bytes
First seen:2026-03-18 06:29:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'845 x AgentTesla, 19'775 x Formbook, 12'298 x SnakeKeylogger)
ssdeep 768:sq+s3pUtDILNCCa+DiA9anAL4KiiiLYb8geDGqg6tvEgK/JbZVc6KN:sq+AGtQOA9U64KMkbTuGqg6tnkJbZVcD
TLSH T154235C003798813AE6FD4BB4ACF3A2458275D65B6903DA5D7CC814AA1B13FC5D6036FE
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 JAMESWT_WT
Tags:AsyncRAT exe vps30002026-kozow-com

Intelligence


File Origin
# of uploads :
1
# of downloads :
171
Origin country :
IT IT
Vendor Threat Intelligence
Malware configuration found for:
DcRat
Details
DcRat
c2 socket addresses, a version, a mutex, an SSL certificate and server signature, an interval, varying flags, and possibly a filepath and a group
Malware family:
ID:
1
File name:
download.exe
Verdict:
Malicious activity
Analysis date:
2026-03-17 20:20:19 UTC
Tags:
dcrat rat asyncrat remote darkcrystal

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Tags:
asyncrat virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connection attempt to an infection source
Using the Windows Management Instrumentation requests
Query of malicious DNS domain
Sending a TCP request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug anti-vm asyncrat base64 configsecuritypolicy dcrat evasive hacktool lolbin mpcmdrun msconfig reconnaissance regedit stealer unsafe vbnet venomrat windows
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-02-04T17:32:00Z UTC
Last seen:
2026-02-04T23:38:00Z UTC
Hits:
~10
Detections:
PDM:Trojan.Win32.Generic Trojan.MSIL.Agent.sb HEUR:Backdoor.MSIL.SheetRat.gen HEUR:Backdoor.MSIL.Crysan.gen Backdoor.MSIL.Darkrat.sb Backdoor.MSIL.Crysan.sb Backdoor.MSIL.Crysan.d
Verdict:
DcRat
YARA:
15 match(es)
Tags:
.Net DarkCrystal RAT DcRat Executable Managed .NET PE (Portable Executable) PE File Layout RAT SOS: 0.23 Win 32 Exe x86
Malware Config
C2 Extraction:
CNC: vps30002026.kozow.com
PORT: 3000
Threat name:
ByteCode-MSIL.Backdoor.AsyncRAT
Status:
Malicious
First seen:
2026-02-04 22:27:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
34 of 38 (89.47%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
Result
Malware family:
asyncrat
Score:
  10/10
Tags:
family:asyncrat botnet:04-feb-2026 rat
Behaviour
Suspicious use of AdjustPrivilegeToken
AsyncRat
Asyncrat family
Malware Config
C2 Extraction:
vps30002026.kozow.com:3000
Unpacked files
SH256 hash:
fa23a1aa287992ff7636622d1158ad740d0fda313d5e9e07de5f0e3fecfa889a
MD5 hash:
05aff2b6242e9b2618ade8d34178d46a
SHA1 hash:
9c1b71b7c965afe4075e81af8ff050c7649e703b
Detections:
AsyncRAT DCRat
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:AcRat
Author:Nikos 'n0t' Totosis
Description:AcRat Payload (based on AsyncRat)
Rule name:CP_Script_Inject_Detector
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:dcrat
Author:jeFF0Falltrades
Rule name:dcrat_kingrat
Author:jeFF0Falltrades
Rule name:dcrat_rkp
Author:jeFF0Falltrades
Description:Detects DCRat payloads
Rule name:INDICATOR_SUSPICIOUS_EXE_B64_Artifacts
Author:ditekSHen
Description:Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc.
Rule name:INDICATOR_SUSPICIOUS_EXE_DcRatBy
Author:ditekSHen
Description:Detects executables containing the string DcRatBy
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
Rule name:MAL_AsnycRAT
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:MAL_AsyncRAT_Config_Decryption
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:Mal_WIN_AsyncRat_RAT_PE
Author:Phatcharadol Thangplub
Description:Use to detect AsyncRAT implant.
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:NETexecutableMicrosoft
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: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:Windows_Trojan_DCRat_1aeea1ac
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)

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments



Avatar
commented on 2026-03-18 06:31:06 UTC

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

{
"sha256": "fa23a1aa287992ff7636622d1158ad740d0fda313d5e9e07de5f0e3fecfa889a",
"yara_possible_family": "dcrat",
"key": "38689984e19d60d81a197d45e3fd9c68ade85b77018ede1d4f3c763257f09d30",
"salt": "4463526174427971777164616e6368756e",
"config": {
"Ports": [
"3000"
],
"Hosts": [
"vps30002026.kozow.com"
],
"Version": " 1.0.7",
"Install": "false",
"InstallFolder": "%AppData%",
"InstallFile": "",
"Key": "aTJEVjB5UXQ5c1haaGtvTFM5MFJQSXptcUdFNTNEeVA=",
"Mutex": "DcRatMutex_qwqdanchun",
"Certificate": "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",
"Serversignature": "CgFtWVwfrgk9ZvsBfwVhrV9BRuuwl7UWytjGTF3/uzrrDiiPiDo84HXTq8Lv2so3m7Wq0jttdJrZH9Kps0vN3aCXXnSmrZd1xroZUvZwiZChJv9oZYORGURpMHTRdsWfd6l37XeEXK77/1mu+VkuwCEV1grg/FQuNM4/PksuhE4=",
"Pastebin": "null",
"BSOD": "false",
"Hwid": "null",
"Delay": "1",
"Group": "04-FEB-2026",
"AntiProcess": "false",
"Anti": "false"
}
}