MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff. 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


StormKitty


Vendor detections: 17


Intelligence 17 IOCs YARA 39 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff
SHA3-384 hash: c62a72038cbe6439db3dfaffab5b69345196c7abb3e552b81e5f37a07a43932b222867e70c631d3ba3c7347f5a4c0465
SHA1 hash: 99397666d23ddde6078496ee73bde00ae9403393
MD5 hash: 19f436930646f3e8f283fa71f2a4cbcb
humanhash: bravo-burger-tango-neptune
File name:19f436930646f3e8f283fa71f2a4cbcb
Download: download sample
Signature StormKitty
Create hunting rule
File size:179'200 bytes
First seen:2024-07-31 05:06:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'659 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:+e8p6ewdOIwQx76vK/bvTv0cU+lL/dMlZZUZ0b2gTDwARE+WpCc:W6ewwIwQJ6vKX0c5MlYZ0b2E
Threatray 113 similar samples on MalwareBazaar
TLSH T17F045B5837D80A15F3BE5FB8F4B012118B71B477AA1AE75F18E920EE0D62351E911FA3
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter zbetcheckin
Tags:32 exe StormKitty

Intelligence

File Origin
# of uploads :
1
# of downloads :
425
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
19f436930646f3e8f283fa71f2a4cbcb
Verdict:
Malicious activity
Analysis date:
2024-07-31 05:07:46 UTC
Tags:
stormkitty stealer telegram evasion exfiltration pastebin asyncrat rat
Link:
https://app.any.run/tasks/6150951d-0132-480f-9665-8b20cdec02e3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a9c6799d47c7700ac6073d
Tags:
Discovery Execution Network Stealth
Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Creating a file
Creating a file in the %temp% directory
Reading critical registry keys
Creating a window
Running batch commands
Launching a process
Launching the process to change network settings
Сreating synchronization primitives
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm anti-vm asyncrat cmd crypto evasive findstr fingerprint hacktool hook keylogger lolbin net netsh njrat reg schtasks stealer vbnet
Link:
https://www.filescan.io/uploads/66a9c6773acdc8d8268e4219/reports/017a8b87-e62a-43fa-a615-e72a8a21e782/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff
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:
Stealerium Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3d22fb9a-f748-4441-bab5-7344e23d6da3
Result
Threat name:
AsyncRAT, StormKitty, WorldWind Stealer
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1485116
Signature
AI detected suspicious sample
Connects to a pastebin service (likely for C&C)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1485116 Sample: viVOqZjAT0.exe Startdate: 31/07/2024 Architecture: WINDOWS Score: 100 40 pastebin.com 2->40 42 api.telegram.org 2->42 44 3 other IPs or domains 2->44 52 Multi AV Scanner detection for domain / URL 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 62 13 other signatures 2->62 8 viVOqZjAT0.exe 15 160 2->8         started        signatures3 58 Connects to a pastebin service (likely for C&C) 40->58 60 Uses the Telegram API (likely for C&C communication) 42->60 process4 dnsIp5 46 api.telegram.org 149.154.167.220, 443, 49732, 49733 TELEGRAMRU United Kingdom 8->46 48 pastebin.com 104.20.3.235, 443, 49735 CLOUDFLARENETUS United States 8->48 50 3 other IPs or domains 8->50 32 C:\Users\user\AppData\...\VLZDGUKUTZ.pdf, ASCII 8->32 dropped 34 C:\Users\user\AppData\...\KATAXZVCPS.png, ASCII 8->34 dropped 36 C:\Users\user\AppData\...36IKHQAIQAU.png, ASCII 8->36 dropped 38 2 other malicious files 8->38 dropped 64 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->64 66 Found many strings related to Crypto-Wallets (likely being stolen) 8->66 68 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 8->68 70 3 other signatures 8->70 13 cmd.exe 1 8->13         started        16 cmd.exe 1 8->16         started        file6 signatures7 process8 signatures9 72 Uses netsh to modify the Windows network and firewall settings 13->72 74 Tries to harvest and steal WLAN passwords 13->74 18 netsh.exe 2 13->18         started        20 conhost.exe 13->20         started        22 findstr.exe 1 13->22         started        24 chcp.com 1 13->24         started        26 netsh.exe 2 16->26         started        28 conhost.exe 16->28         started        30 chcp.com 1 16->30         started        process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff/
Threat name:
ByteCode-MSIL.Backdoor.AsyncRat
Create hunting rule
Status:
Malicious
First seen:
2024-07-30 00:44:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=idte5iwzeu7zgydpn5rjm3yf4k5tadqd5axm2vgf3s5fmqg7bx7q._file
Verdict:
malicious
Similar samples:
09dcf54c74a3669c9cd811df04f84601c723a7e7457b414e15a842192b8df669
StormKitty
40ba4a68575cda8b4da56ef2efae3f3c217bf7b78d68c29086e86d324d3ebffa
StormKitty
63d2c37fdb370cf6e743bd75e7408f5eded5bc823a29401eeafe0bea921657bb
StormKitty
817940c9dd88c9d185f58532e2027e9df7bfaca8249ec96ae055da03c8750f20
StormKitty
9085e6327177bb47cf43a8d8ed0c24fcfd50cde4199c5130f2b97b2508e9aabc
StormKitty
dbacc134902ee72d1464d3b61a3518402b7ab54807bb7b7541fc2916c8119e9e
StormKitty
+ 103 additional samples on MalwareBazaar
Result
Malware family:
stormkitty
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:stormkitty botnet:default credential_access discovery persistence privilege_escalation rat spyware stealer
Link:
https://tria.ge/reports/240731-frzjdsxhpn/
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Browser Information Discovery
Event Triggered Execution: Netsh Helper DLL
System Location Discovery: System Language Discovery
System Network Configuration Discovery: Wi-Fi Discovery
Drops desktop.ini file(s)
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Looks up geolocation information via web service
Reads user/profile data of web browsers
Credentials from Password Stores: Credentials from Web Browsers
AsyncRat
StormKitty
StormKitty payload
Malware Config
C2 Extraction:
127.0.0.1:6606
127.0.0.1:7707
127.0.0.1:8808
https://api.telegram.org/bot6082381502:AAFgFkge53k6kBZcTN8CBICiZV-VphQ1WgA/sendMessage?chat_id=5795480469
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/0c3f3550-fc2f-4b65-a786-b441d79abe19
Unpacked files
SH256 hash:
40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff
MD5 hash:
19f436930646f3e8f283fa71f2a4cbcb
SHA1 hash:
99397666d23ddde6078496ee73bde00ae9403393
Detections:
WorldWindStealer
Create hunting rule
win_asyncrat_w0
Create hunting rule
SUSP_NET_Msil_Suspicious_Use_StrReverse
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
asyncrat
Create hunting rule
Link:
https://www.unpac.me/results/3da7b98b-e62b-4712-b368-5f31da4bef4e/
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
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:INDICATOR_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_Discord_Regex
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Discord tokens regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_RawPaste_URL
Create hunting rule
Author:ditekSHen
Description:Detects executables (downlaoders) containing URLs to raw contents of a paste
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
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
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many VPN software clients. Observed in infosteslers
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_WirelessNetReccon
Create hunting rule
Author:ditekSHen
Description:Detects executables with interest in wireless interface using netsh
Rule name:malware_asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:malware_asyncrat
Create hunting rule
Description:detect AsyncRat in memory
Reference:https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp
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
Create hunting rule
Author:ditekSHen
Description:Detects StormKitty infostealer
Rule name:MALWARE_Win_WorldWind
Create hunting rule
Author:ditekSHen
Description:Detects WorldWind infostealer
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: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:prynt_stealer
Create hunting rule
Author:Nikos 'n0t' Totosis
Description:Prynt Stealer Payload
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_NET_Msil_Suspicious_Use_StrReverse
Create hunting rule
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_Generic_Threat_2bb6f41d
Create hunting rule
Author:Elastic Security
Rule name:Windows_Generic_Threat_62e1f5fc
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.

Web download

StormKitty

Executable exe 40e64ea2d9253f93606f6f62966f05e2bb300e03e82ecd54c5dcba5640df0dff

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3080466/

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments


Avatar
zbet commented on 2024-07-31 05:06:04 UTC

url : hxxp://176.111.174.140/PwHnaA.exe