MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8b21d5d222c521b730f85690aa3f88c00b2c9ce7e8b208564509e093b5eed814. 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: 12


Intelligence 12 IOCs 1 YARA 2 File information Comments
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SHA256 hash: 8b21d5d222c521b730f85690aa3f88c00b2c9ce7e8b208564509e093b5eed814
SHA3-384 hash: d33102dff498d90b2669f74a2be629deee8e1b6ade8c9d7cd3b343ac28d96e3a33eaa493925be7c0b51782bfcb7b3390
SHA1 hash: 88dd0e389657c8bf0aff4cb8570f975ceec7f86b
MD5 hash: f35d1730f09ca3b23dfc154538f9f235
humanhash: tennis-stairway-hamper-oscar
File name:8B21D5D222C521B730F85690AA3F88C00B2C9CE7E8B20.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:450'048 bytes
First seen:2022-04-03 04:25:50 UTC
Last seen:2022-04-03 05:01:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:3wEiyHzHpRwHuY7w2pc+Iy+idFwf0yhm8gqRMLjEVNTFJlwIK+f/W77OvdYkKVw:3wtyDbhYcR+2i7iHhqq4E7xYwwqVY
TLSH T1ACA47936A736E641E8741A77896F87E1BB34DD5CB7F3821AE2887B7A3F341191B00254
File icon (PE):PE icon
dhash icon 646cb9f0f1707078 (1 x AsyncRAT)
Reporter abuse_ch
Tags:AsyncRAT exe RAT


Avatar
abuse_ch
AsyncRAT C2:
54.37.42.165:4782

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
54.37.42.165:4782 https://threatfox.abuse.ch/ioc/487834/

Intelligence

File Origin
# of uploads :
2
# of downloads :
417
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Detection(s):
SecuriteInfo.com.Trojan.MulDropNET.12.3882.14887.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a file
Searching for the window
Using the Windows Management Instrumentation requests
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Launching a process
Setting a keyboard event handler
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
coinminer control.exe nanocore obfuscated packed
Link:
https://www.filescan.io/uploads/624921da1f2042394872dce6/reports/a8d409c1-7111-4b12-ab1b-c5929e774fd7/overview
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:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4eda1dfd-3c93-46a9-bf11-5064dcc3ff7e
Result
Threat name:
AnarchyGrabber AsyncRAT Quasar
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/969508
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AnarchyGrabber
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 601995 Sample: 8B21D5D222C521B730F85690AA3... Startdate: 03/04/2022 Architecture: WINDOWS Score: 100 89 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->89 91 Found malware configuration 2->91 93 Malicious sample detected (through community Yara rule) 2->93 95 16 other signatures 2->95 9 8B21D5D222C521B730F85690AA3F88C00B2C9CE7E8B20.exe 8 2->9         started        13 Vzhmttlc.exe 2->13         started        process3 file4 61 C:\Users\user\AppData\Local\...\Vzhmttlc.exe, PE32 9->61 dropped 63 C:\Users\user\AppData\...\Tkbldpeijxjy.exe, PE32 9->63 dropped 65 C:\Users\user\AppData\Local\Temp\Csyv.exe, PE32 9->65 dropped 67 2 other files (1 malicious) 9->67 dropped 97 Detected unpacking (overwrites its own PE header) 9->97 15 Vzhmttlc.exe 15 5 9->15         started        20 Tkbldpeijxjy.exe 7 9->20         started        22 Csyv.exe 1 9->22         started        24 Pjcetsko.exe 1 9->24         started        signatures5 process6 dnsIp7 77 ip-api.com 208.95.112.1, 49732, 49736, 80 TUT-ASUS United States 15->77 57 C:\...\Microsoft Windows Health Servlce.exe, PE32 15->57 dropped 79 Antivirus detection for dropped file 15->79 81 Multi AV Scanner detection for dropped file 15->81 83 May check the online IP address of the machine 15->83 87 2 other signatures 15->87 26 Microsoft Windows Health Servlce.exe 14 4 15->26         started        31 schtasks.exe 1 15->31         started        59 C:\...\Microsoft Windows  Health Servlce.exe, PE32 20->59 dropped 85 Machine Learning detection for dropped file 20->85 33 cmd.exe 1 20->33         started        35 cmd.exe 1 20->35         started        37 conhost.exe 24->37         started        file8 signatures9 process10 dnsIp11 71 54.37.42.165, 4782, 49737, 49745 OVHFR France 26->71 73 ip-api.com 26->73 69 C:\Users\user\AppData\Roaming\...\04-03-2022, COM 26->69 dropped 99 Hides that the sample has been downloaded from the Internet (zone.identifier) 26->99 101 Installs a global keyboard hook 26->101 39 schtasks.exe 26->39         started        41 conhost.exe 31->41         started        43 Microsoft Windows  Health Servlce.exe 33->43         started        47 conhost.exe 33->47         started        49 timeout.exe 33->49         started        51 conhost.exe 35->51         started        53 schtasks.exe 35->53         started        file12 signatures13 process14 dnsIp15 55 conhost.exe 39->55         started        75 127.0.0.1 unknown unknown 43->75 103 Tries to harvest and steal browser information (history, passwords, etc) 43->103 signatures16 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8b21d5d222c521b730f85690aa3f88c00b2c9ce7e8b208564509e093b5eed814/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
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Status:
Malicious
First seen:
2022-02-15 12:09:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
23
AV detection:
33 of 42 (78.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rmq5lurcyuq3omhyk2ikup4iyafszhhh5czaqvsfbhqjhnpo3aka._file
Verdict:
malicious
Label(s):
asyncrat
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Result
Malware family:
quasar
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Score:
  10/10
Tags:
family:asyncrat family:quasar botnet:biuro botnet:data rat spyware stealer trojan
Link:
https://tria.ge/reports/220403-e2hsysehc2/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Async RAT payload
AsyncRat
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
127.0.0.1:4782
54.37.42.165:4782
Unpacked files
SH256 hash:
1c08ef9b0ac746663e9214a995e75849d39531ae4aa731327d6f9477e0459ca5
MD5 hash:
4c3e7630b3d0c66476a7120242408514
SHA1 hash:
f789c9562d067c4cd1e147e736dca198bb59cb3d
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/856a1c99-2c03-4767-a3d8-7a1174faab2e/
SH256 hash:
82ee490f62c0615482083fa48ce8f4f69013c5a8aab53b5fa68d28953c786a78
MD5 hash:
3b915193cedf68ee840f8b08d80f75f8
SHA1 hash:
9537e65617da4d0865b2449bc34d8536e5a50e4a
Link:
https://www.unpac.me/results/856a1c99-2c03-4767-a3d8-7a1174faab2e/
SH256 hash:
8dc1494ffede0a03484e8c38fa5543dca734264fb3249f593596c836f23f874d
MD5 hash:
8c250548758247747126ae6549f281a1
SHA1 hash:
12f3335da4c48444421c0787bc2be120e508018a
Link:
https://www.unpac.me/results/856a1c99-2c03-4767-a3d8-7a1174faab2e/
SH256 hash:
8b21d5d222c521b730f85690aa3f88c00b2c9ce7e8b208564509e093b5eed814
MD5 hash:
f35d1730f09ca3b23dfc154538f9f235
SHA1 hash:
88dd0e389657c8bf0aff4cb8570f975ceec7f86b
Link:
https://www.unpac.me/results/856a1c99-2c03-4767-a3d8-7a1174faab2e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8b21d5d222c521b730f85690aa3f88c00b2c9ce7e8b208564509e093b5eed814

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
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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/260229/

Comments