MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bcef3e6b76788ce777ba9a5f7f0486fc6776dace6697a6a6ace5495f40dd40fb. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bcef3e6b76788ce777ba9a5f7f0486fc6776dace6697a6a6ace5495f40dd40fb
SHA3-384 hash: ba848c4cfb3dd25f56b3adc5d29be68c0872a40e97c96a4123a5db75b1007bad7721dd17f39714fc1202965cd03df96f
SHA1 hash: 3b952025c1ec34e3e2661cf2c8cf7945a88e642b
MD5 hash: 216bf6b5303a4dc394f88f51dad3d3e2
humanhash: india-arkansas-white-lima
File name:216bf6b5303a4dc394f88f51dad3d3e2.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:653'312 bytes
First seen:2022-06-26 07:45:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:pTR23bCxLZE+tNTUSO7k/j50/VYRT+6Joi:JR23boFE+tNADg/BRK6Jd
TLSH T192D48CF1317D83C3E1A58EB11F8A86B079F136AC98D0160DA0F59B2ED3E2395149D9E9
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon d4a6a494a48484a4 (65 x AgentTesla, 39 x Formbook, 8 x RemcosRAT)
Reporter abuse_ch
Tags:AsyncRAT exe RAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
285
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AsyncRat
Create hunting rule
Link:
https://www.capesandbox.com/analysis/283309/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Running batch commands
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62b80e88e88d6da4ffc86b4f/reports/fd0bbc9f-f8b0-40e5-8a6c-3d1b4fa06e00/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:
AVEMARIA
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/858f4f05-a1fb-4b00-bb52-97eaa9736e1d
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1019902
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Encrypted powershell cmdline option found
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AsyncRAT
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 652398 Sample: fiMn8NIb8L.exe Startdate: 26/06/2022 Architecture: WINDOWS Score: 100 58 Malicious sample detected (through community Yara rule) 2->58 60 Antivirus detection for dropped file 2->60 62 Antivirus / Scanner detection for submitted sample 2->62 64 11 other signatures 2->64 10 fiMn8NIb8L.exe 5 2->10         started        process3 file4 48 C:\Users\user\AppData\Roaming\...\image.exe, PE32 10->48 dropped 50 C:\Users\user\...\image.exe:Zone.Identifier, ASCII 10->50 dropped 52 C:\Users\user\AppData\...\fiMn8NIb8L.exe.log, ASCII 10->52 dropped 68 Creates an undocumented autostart registry key 10->68 70 Encrypted powershell cmdline option found 10->70 14 fiMn8NIb8L.exe 6 10->14         started        17 powershell.exe 15 10->17         started        19 fiMn8NIb8L.exe 10->19         started        signatures5 process6 file7 54 C:\Users\user\AppData\Roaming\image.exe, PE32 14->54 dropped 21 cmd.exe 1 14->21         started        23 cmd.exe 1 14->23         started        26 conhost.exe 17->26         started        process8 signatures9 28 image.exe 2 21->28         started        31 conhost.exe 21->31         started        33 timeout.exe 1 21->33         started        66 Uses schtasks.exe or at.exe to add and modify task schedules 23->66 35 conhost.exe 23->35         started        37 schtasks.exe 1 23->37         started        process10 signatures11 72 Antivirus detection for dropped file 28->72 74 Multi AV Scanner detection for dropped file 28->74 76 Machine Learning detection for dropped file 28->76 78 Encrypted powershell cmdline option found 28->78 39 powershell.exe 28->39         started        41 image.exe 28->41         started        44 image.exe 28->44         started        process12 dnsIp13 46 conhost.exe 39->46         started        56 185.140.53.131, 49866, 7171 DAVID_CRAIGGG Sweden 41->56 process14
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bcef3e6b76788ce777ba9a5f7f0486fc6776dace6697a6a6ace5495f40dd40fb/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-06-26 00:28:51 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
17 of 26 (65.38%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xtxt423wpcgoo552tjpx6beg7rtxnwwom2l2njvm4vev6qg5id5q._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
Result
Malware family:
asyncrat
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat botnet:default rat
Link:
https://tria.ge/reports/220626-jldlhscag7/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Async RAT payload
AsyncRat
Malware Config
C2 Extraction:
185.140.53.131:7171
Unpacked files
SH256 hash:
bcef3e6b76788ce777ba9a5f7f0486fc6776dace6697a6a6ace5495f40dd40fb
MD5 hash:
216bf6b5303a4dc394f88f51dad3d3e2
SHA1 hash:
3b952025c1ec34e3e2661cf2c8cf7945a88e642b
Link:
https://www.unpac.me/results/dbd7adca-6454-4053-95cf-1ef3d5c6316a/
Malware family:
AsyncRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bcef3e6b7678/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/bcef3e6b76788ce777ba9a5f7f0486fc6776dace6697a6a6ace5495f40dd40fb

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: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.

Web download

AsyncRAT

Executable exe bcef3e6b76788ce777ba9a5f7f0486fc6776dace6697a6a6ace5495f40dd40fb

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2239641/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/283309/

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