MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b17bfed7ccb65140f22de398cfcb56faa877dd36410bac51453f8ad9f1537bda. 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: 9


Intelligence 9 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b17bfed7ccb65140f22de398cfcb56faa877dd36410bac51453f8ad9f1537bda
SHA3-384 hash: 6e79fce6b66eb6c4baa19c1c8201a22862cb1c427f0e8d61cdc7c68fd1d0d708abf98e585e1ade9969718211025c6b51
SHA1 hash: d562ac81f0b67749b48204bab6f778d4d8769009
MD5 hash: d7a09a0e13ea47bd2d6972b7affbe978
humanhash: mexico-aspen-march-colorado
File name:microsoft-II.jpeg.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:16'896 bytes
First seen:2021-06-23 13:42:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:WGuaPP9LlLVL4t/C6JLbmLb8fkf9vwEG9/XwJwq6uJfq2GSLwq3eWLB:WPaPPh5p8fbyb8l2GziB
Threatray 1'356 similar samples on MalwareBazaar
TLSH 3772C821B3578279D9361F3708A5529013B6E3459A3BCA6F344D131EDF6338B4BB2B61
Reporter James_inthe_box
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
microsoft-II.jpeg.exe
Verdict:
Malicious activity
Analysis date:
2021-06-23 13:42:58 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/19265f00-1044-4321-91c5-5d9fec4f6c07

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/2016ebcf-87c2-43f3-bec1-485076e9996c
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/806610
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus detection for dropped file
Drops PE files to the startup folder
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
PowerShell case anomaly found
Powershell drops PE file
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 an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 439021 Sample: microsoft-II.jpeg.exe Startdate: 23/06/2021 Architecture: WINDOWS Score: 100 84 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->84 86 Found malware configuration 2->86 88 Antivirus detection for dropped file 2->88 90 9 other signatures 2->90 11 microsoft-II.jpeg.exe 15 5 2->11         started        15 Runtime Brokerr.exe 2 2->15         started        18 uupate.exe 2->18         started        process3 dnsIp4 80 us-east-1.route-1.000webhost.awex.io 145.14.145.41, 443, 49714 AWEXUS Netherlands 11->80 82 hkdsjkdsjdsdsjk.000webhostapp.com 11->82 70 C:\ProgramData\htfhghhhj.exe, PE32 11->70 dropped 72 C:\Users\user\...\microsoft-II.jpeg.exe.log, ASCII 11->72 dropped 20 htfhghhhj.exe 3 11->20         started        112 PowerShell case anomaly found 15->112 23 powershell.exe 10 15->23         started        25 Runtime Brokerr.exe 15->25         started        27 Runtime Brokerr.exe 15->27         started        29 uupate.exe 18->29         started        file5 signatures6 process7 signatures8 96 Antivirus detection for dropped file 20->96 98 Multi AV Scanner detection for dropped file 20->98 100 Machine Learning detection for dropped file 20->100 102 2 other signatures 20->102 31 htfhghhhj.exe 6 20->31         started        34 powershell.exe 15 20->34         started        37 conhost.exe 23->37         started        process9 file10 76 C:\Users\user\AppData\...\Runtime Brokerr.exe, PE32 31->76 dropped 39 cmd.exe 1 31->39         started        42 cmd.exe 1 31->42         started        92 Drops PE files to the startup folder 34->92 94 Powershell drops PE file 34->94 44 conhost.exe 34->44         started        signatures11 process12 signatures13 104 Uses schtasks.exe or at.exe to add and modify task schedules 39->104 46 schtasks.exe 1 39->46         started        49 conhost.exe 39->49         started        51 Runtime Brokerr.exe 3 42->51         started        53 conhost.exe 42->53         started        55 timeout.exe 1 42->55         started        process14 signatures15 108 PowerShell case anomaly found 46->108 57 Runtime Brokerr.exe 46->57         started        61 powershell.exe 46->61         started        64 Runtime Brokerr.exe 46->64         started        66 Runtime Brokerr.exe 46->66         started        110 Injects a PE file into a foreign processes 51->110 process16 dnsIp17 78 136.144.41.4, 4771, 49728, 49733 WORLDSTREAMNL Netherlands 57->78 106 Tries to harvest and steal browser information (history, passwords, etc) 57->106 74 C:\Users\user\AppData\Roaming\...\uupate.exe, PE32 61->74 dropped 68 conhost.exe 61->68         started        file18 signatures19 process20
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b17bfed7ccb65140f22de398cfcb56faa877dd36410bac51453f8ad9f1537bda/
Threat name:
ByteCode-MSIL.Backdoor.Crysan
Create hunting rule
Status:
Malicious
First seen:
2021-06-23 13:42:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
9 of 29 (31.03%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wf575v6mwziub4rn4omm7s2w7kuhpxjwief2yukfh6fnt4ktppna._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
masslogger
Create hunting rule
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AsyncRAT
+ 1'346 additional samples on MalwareBazaar
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat rat spyware stealer
Link:
https://tria.ge/reports/210623-4xv859ryt2/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Drops startup file
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
127.0.0.1:4771
136.144.41.4:4771
Unpacked files
SH256 hash:
b17bfed7ccb65140f22de398cfcb56faa877dd36410bac51453f8ad9f1537bda
MD5 hash:
d7a09a0e13ea47bd2d6972b7affbe978
SHA1 hash:
d562ac81f0b67749b48204bab6f778d4d8769009
Link:
https://www.unpac.me/results/fb82f09b-a429-44e0-a2e3-49fa9cbb5b35/
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/b17bfed7ccb65140f22de398cfcb56faa877dd36410bac51453f8ad9f1537bda

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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.

  
Delivery method
Other

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