MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec. 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: 17


Intelligence 17 IOCs YARA 35 File information Comments
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SHA256 hash: 33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec
SHA3-384 hash: e2d03cc2564679e02962d215fe2366df6291ac0fee44c8eb14c455273eabaa4b05c99b35d8ab560666e28c8f9aeb8bb6
SHA1 hash: 167f4ae3a59b6e2e927e66a2c24b6a2971aec6e5
MD5 hash: f2c3edacf7caf2d8c59ff660680a49cb
humanhash: vegan-double-shade-friend
File name:WinDir.exe
Download: download sample
Signature AsyncRAT
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File size:338'944 bytes
First seen:2024-01-06 18:31:30 UTC
Last seen:2024-01-13 05:58:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:Eho6aAN4TLDw2DXCJhdhgf109EGD0Ju4p:d6vWHDrD32EGAhp
TLSH T12474191BF2668D21C1C8137AD1DF91005BF29985737BE60F368613960D133FEAA5EA87
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter adm1n_usa32
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
319
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
ramnit
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ID:
1
File name:
4363463463464363463463463.exe
Verdict:
Malicious activity
Analysis date:
2024-01-07 13:50:16 UTC
Tags:
stealer stealc loader hausbomber opendir keylogger ramnit trojan xworm remote dcrat rat guloader redline evasion risepro gcleaner remcos arechclient2 backdoor phorpiex kelihos doina rhadamanthys parallax lumma metastealer socks5systemz proxy quasar purplefox marsstealer arkei nanocore vidar
Link:
https://app.any.run/tasks/2f5cd703-28ee-4373-89f7-25336e6c22ff

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/469735/
Detection(s):
Porcupine.Malware.58887.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connecting to a non-recommended domain
Sending an HTTP GET request
Creating a file in the %temp% directory
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Changing a file
Creating a file
Reading critical registry keys
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Stealing user critical data
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin powershell replace zusy
Link:
https://www.filescan.io/uploads/65999ca4fd5068bbc3c84ed4/reports/e210b621-fe4b-4a59-a118-39f7ffdea09e/overview
Verdict:
Malicious
Labled as:
Zusy.Generic
Link:
https://www.hybrid-analysis.com/sample/33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec
Result
Verdict:
MALICIOUS
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:
MassLogger
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/756152b7-e6f9-48a4-93a4-d4f091cc1891
Result
Threat name:
AsyncRAT, StormKitty, WorldWind Stealer,
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Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1370791
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
Contains functionality to capture screen (.Net source)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Capture Wi-Fi password
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal WLAN passwords
Uses netsh to modify the Windows network and firewall settings
Uses the Telegram API (likely for C&C communication)
Yara detected AsyncRAT
Yara detected Generic Downloader
Yara detected StormKitty Stealer
Yara detected Telegram RAT
Yara detected Telegram Recon
Yara detected WorldWind Stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1370791 Sample: WinDir.exe Startdate: 06/01/2024 Architecture: WINDOWS Score: 100 68 api.telegram.org 2->68 70 55.235.10.0.in-addr.arpa 2->70 72 2 other IPs or domains 2->72 84 Multi AV Scanner detection for domain / URL 2->84 86 Found malware configuration 2->86 88 Malicious sample detected (through community Yara rule) 2->88 92 15 other signatures 2->92 8 WinDir.exe 16 210 2->8         started        13 WinDir.exe 2->13         started        15 WinDir.exe 190 2->15         started        signatures3 90 Uses the Telegram API (likely for C&C communication) 68->90 process4 dnsIp5 74 127.0.0.1 unknown unknown 8->74 76 api.telegram.org 149.154.167.220, 443, 49714, 49715 TELEGRAMRU United Kingdom 8->76 78 3 other IPs or domains 8->78 54 C:\Users\user\AppData\...\ZGGKNSUKOP.jpg, ASCII 8->54 dropped 56 C:\Users\user\AppData\Local\...\wordwind.bin, data 8->56 dropped 58 C:\Users\...\WindowsCache124526tgc842aze.bin, data 8->58 dropped 94 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->94 96 Found many strings related to Crypto-Wallets (likely being stolen) 8->96 98 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 8->98 17 cmd.exe 8->17         started        20 cmd.exe 8->20         started        22 powershell.exe 23 8->22         started        60 C:\Users\user\AppData\...\ZGGKNSUKOP.pdf, ASCII 13->60 dropped 62 C:\Users\user\AppData\...EGWXUHVUG.docx, ASCII 13->62 dropped 64 C:\Users\user\AppData\...\BNAGMGSPLO.docx, ASCII 13->64 dropped 100 Tries to harvest and steal browser information (history, passwords, etc) 13->100 102 Adds a directory exclusion to Windows Defender 13->102 104 Tries to harvest and steal WLAN passwords 13->104 24 cmd.exe 13->24         started        26 cmd.exe 13->26         started        28 powershell.exe 13->28         started        66 C:\Users\user\AppData\...\BJZFPPWAPT.jpg, ASCII 15->66 dropped 106 Modifies existing user documents (likely ransomware behavior) 15->106 30 cmd.exe 15->30         started        32 cmd.exe 15->32         started        34 powershell.exe 15->34         started        file6 signatures7 process8 signatures9 80 Uses netsh to modify the Windows network and firewall settings 17->80 82 Tries to harvest and steal WLAN passwords 17->82 42 4 other processes 17->42 44 3 other processes 20->44 36 conhost.exe 22->36         started        46 4 other processes 24->46 48 3 other processes 26->48 38 conhost.exe 28->38         started        50 4 other processes 30->50 52 3 other processes 32->52 40 conhost.exe 34->40         started        process10
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec/
Threat name:
Win32.Backdoor.AsyncRAT
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Status:
Malicious
First seen:
2023-12-25 14:10:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=go4el5expcc3ua6y3zv4eyeepxioy3ojjcnc3iyhc4a3cyfb3xwa._file
Verdict:
malicious
Result
Malware family:
zgrat
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Score:
  10/10
Tags:
family:asyncrat family:stormkitty family:zgrat botnet:default persistence rat spyware stealer
Link:
https://tria.ge/reports/240106-w6lh3sdecj/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Adds Run key to start application
Drops desktop.ini file(s)
Looks up external IP address via web service
Looks up geolocation information via web service
.NET Reactor proctector
Reads user/profile data of web browsers
Async RAT payload
AsyncRat
Detect ZGRat V1
StormKitty
StormKitty payload
ZGRat
Malware Config
C2 Extraction:
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot6342313307:AAFKd4P2Qn-FrHlxYQr9imHCnOVc5Cl4eMI/sendMessage?chat_id=1059970907
Unpacked files
SH256 hash:
33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec
MD5 hash:
f2c3edacf7caf2d8c59ff660680a49cb
SHA1 hash:
167f4ae3a59b6e2e927e66a2c24b6a2971aec6e5
Detections:
INDICATOR_EXE_Packed_DotNetReactor
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Link:
https://www.unpac.me/results/c2b1179b-f4a6-4b42-87a1-41df162f4518/
Malware family:
AsyncRAT
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/33b845f49778/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec

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__RemoteAPI
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_DotNetReactor
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Author:ditekSHen
Description:Detects executables packed with unregistered version of .NET Reactor
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
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Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_EXE_CC_Regex
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Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_Discord_Regex
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Author:ditekSHen
Description:Detects executables referencing Discord tokens regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
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Author:ditekSHen
Description:Detects executables containing URLs to raw contents of a Github gist
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_VPN
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Author:ditekSHen
Description:Detects executables referencing many VPN software clients. Observed in infosteslers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
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Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
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Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon
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Author:ditekSHen
Description:Detects executables with interest in wireless interface using netsh
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:MALWARE_Win_Multi_Family_InfoStealer
Create hunting rule
Author:ditekSHen
Description:Detects Prynt, WorldWind, DarkEye, Stealerium and ToxicEye / TelegramRAT infostealers
Rule name:MALWARE_Win_StormKitty
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Author:ditekSHen
Description:Detects StormKitty infostealer
Rule name:MALWARE_Win_WorldWind
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Author:ditekSHen
Description:Detects WorldWind infostealer
Rule name:MAL_AsnycRAT
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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:MD5_Constants
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Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:msil_suspicious_use_of_strreverse
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Author:dr4k0nia
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Rule name:Multifamily_RAT_Detection
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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
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Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs
Rule name:SUSP_NET_Msil_Suspicious_Use_StrReverse
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Author:dr4k0nia, modified by Florian Roth
Description:Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse
Reference:https://github.com/dr4k0nia/yara-rules
Rule name:Windows_Trojan_Donutloader_f40e3759
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
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Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
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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.

Web download

AsyncRAT

Executable exe 33b845f4977885ba03d8de6bc260847dd0ec6dc9489a2da3071701b160a1ddec

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/469735/
  
URLhaus
https://urlhaus.abuse.ch/url/2747085/
  
Delivery method
Distributed via web download

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