MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 23ca2524056b8f020707b5d3fc559040a2bfd4803a120e282cb24f67514e4759. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
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SHA256 hash: 23ca2524056b8f020707b5d3fc559040a2bfd4803a120e282cb24f67514e4759
SHA3-384 hash: dc201672237a01bec3668053f85350c85990a00bf4e2aa9c844853134f90987ed8b95845b51978260f0149d3391facba
SHA1 hash: 8cdd98e961f17722da3985312d31952e78195aec
MD5 hash: cdbf6721a59a353e460efb19a5df2bc0
humanhash: asparagus-carbon-five-quiet
File name:cdbf6721a59a353e460efb19a5df2bc0.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:49'664 bytes
First seen:2021-08-16 06:49:16 UTC
Last seen:2021-08-16 07:50:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:uaT/Vtqulip4/uBa1194KQwTyXh8D4VPYqgqiaBDj+biBSC2GqE:ugopgd11DyyDOPY3sDj+bi4rE
Threatray 277 similar samples on MalwareBazaar
TLSH T18D239303378BE316D43625B5C4FB192203F56B836133D9AB7E9916CD59022D7DE8A7C8
Reporter abuse_ch
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cdbf6721a59a353e460efb19a5df2bc0.exe
Verdict:
Malicious activity
Analysis date:
2021-08-16 06:51:25 UTC
Tags:
stealer
Link:
https://app.any.run/tasks/5e8a4083-13df-4912-81f0-f197dfefc121

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/179428/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.37386005.31437.19024.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Sending a UDP request
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Deleting a recently created file
Reading critical registry keys
Replacing files
Running batch commands
Creating a window
Launching the process to change network settings
Sending an HTTP GET request
Enabling the 'hidden' option for recently created files
Moving of the original file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6008b668-438e-4ed6-ac3c-782649b90535
Result
Threat name:
AsyncRAT StormKitty
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/833326
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
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
Sigma detected: Suspicious Process Start Without DLL
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected StormKitty Stealer
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 465757 Sample: gf5jI5cpYW.exe Startdate: 16/08/2021 Architecture: WINDOWS Score: 100 101 Antivirus / Scanner detection for submitted sample 2->101 103 Sigma detected: Capture Wi-Fi password 2->103 105 Multi AV Scanner detection for submitted file 2->105 107 11 other signatures 2->107 10 gf5jI5cpYW.exe 16 4 2->10         started        15 chromeupdate.exe 2->15         started        17 chromeupdate.exe 14 3 2->17         started        process3 dnsIp4 97 raw.githubusercontent.com 185.199.109.133, 443, 49716, 49727 FASTLYUS Netherlands 10->97 93 C:\Users\user\AppData\...\gf5jI5cpYW.exe.log, ASCII 10->93 dropped 121 Writes to foreign memory regions 10->121 123 Allocates memory in foreign processes 10->123 125 Injects a PE file into a foreign processes 10->125 19 RegAsm.exe 138 10->19         started        22 RegAsm.exe 10->22         started        24 RegAsm.exe 15->24         started        99 185.199.108.133, 443, 49726 FASTLYUS Netherlands 17->99 27 RegAsm.exe 128 17->27         started        29 RegAsm.exe 17->29         started        file5 signatures6 process7 file8 111 Tries to harvest and steal WLAN passwords 19->111 113 Modifies existing user documents (likely ransomware behavior) 19->113 31 cmd.exe 1 19->31         started        34 cmd.exe 1 19->34         started        36 WerFault.exe 19->36         started        39 WerFault.exe 19->39         started        115 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 22->115 117 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 22->117 87 C:\Users\user\AppData\...\UOOJJOZIRH.jpg, ASCII 24->87 dropped 89 C:\Users\user\AppData\...89IKHQAIQAU.pdf, ASCII 24->89 dropped 91 C:\Users\user\AppData\...\FENIVHOIKN.pdf, ASCII 24->91 dropped 119 Tries to harvest and steal browser information (history, passwords, etc) 24->119 41 cmd.exe 24->41         started        43 cmd.exe 24->43         started        45 WerFault.exe 24->45         started        signatures9 process10 dnsIp11 127 Uses netsh to modify the Windows network and firewall settings 31->127 129 Tries to harvest and steal WLAN passwords 31->129 47 netsh.exe 3 31->47         started        50 conhost.exe 31->50         started        52 findstr.exe 1 31->52         started        54 chcp.com 1 31->54         started        56 netsh.exe 3 34->56         started        58 conhost.exe 34->58         started        60 chcp.com 1 34->60         started        95 192.168.2.1 unknown unknown 36->95 62 4 other processes 41->62 64 3 other processes 43->64 signatures12 process13 signatures14 131 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 47->131 133 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 47->133 135 Tries to harvest and steal WLAN passwords 47->135 66 cmd.exe 47->66         started        69 cmd.exe 47->69         started        71 WerFault.exe 47->71         started        process15 signatures16 109 Tries to harvest and steal WLAN passwords 66->109 73 conhost.exe 66->73         started        75 chcp.com 66->75         started        77 netsh.exe 66->77         started        79 findstr.exe 66->79         started        81 conhost.exe 69->81         started        83 chcp.com 69->83         started        85 netsh.exe 69->85         started        process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/23ca2524056b8f020707b5d3fc559040a2bfd4803a120e282cb24f67514e4759/
Threat name:
Win32.Trojan.Woreflint
Create hunting rule
Status:
Malicious
First seen:
2021-08-14 19:10:00 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=epfckjafnohqebyhwxj7yvmqicrl7veahija4kbmwjhwoukoi5mq._file
Verdict:
malicious
Similar samples:
587328521840c2d6fc72391af9027ddba0489878c7bb287058cbad683f6e0191
AsyncRAT
661ea7579bf85b11440f6a18d9660a3e0038029ebe7e444d1f16095aa13d651a
AsyncRAT
729a1b125fb330463c22a87c061e384300f49bd9d6793836bb3e52bcb61cc03f
AsyncRAT
7d4b5d1c4d2ac49cf030034937c48662bdb6bc3d765b2ae575d613a13c5ca46f
AsyncRAT
ace64cbe1ef91a0b14602264fe0de8e3698cb8b901cbd6251b3fd11d87a0bef6
AsyncRAT
be5f9afb0266055e144c71a9341bd1a228ddc0c30360535ec47d8ac4058df59c
AsyncRAT
c77845f6b361b20a24d3c99ac9b7754c93ed51906c08ef9a04e3bebf68e8d861
AsyncRAT
f101ea42d63ecc3c5c56db1b6b69083489bd914ccefb493f3dc24407c31da860
AsyncRAT
+ 267 additional samples on MalwareBazaar
Result
Malware family:
stormkitty
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:stormkitty persistence rat spyware stealer
Link:
https://tria.ge/reports/210816-xlq2z9q536/
Behaviour
Checks processor information in registry
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
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
Reads user/profile data of web browsers
Async RAT payload
AsyncRat
StormKitty
StormKitty Payload
Unpacked files
SH256 hash:
23ca2524056b8f020707b5d3fc559040a2bfd4803a120e282cb24f67514e4759
MD5 hash:
cdbf6721a59a353e460efb19a5df2bc0
SHA1 hash:
8cdd98e961f17722da3985312d31952e78195aec
Link:
https://www.unpac.me/results/2f5b5ae9-1538-49c3-b2fd-aa1aa09a7e6d/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/23ca2524056b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.99
Link:
https://yomi.yoroi.company/submissions/23ca2524056b8f020707b5d3fc559040a2bfd4803a120e282cb24f67514e4759

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:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/179428/

Comments