MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f2ed40ab9c2eb52484d79b485a78e2779dd300b7513eac17ec4e39fd4a9614a8. 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 YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f2ed40ab9c2eb52484d79b485a78e2779dd300b7513eac17ec4e39fd4a9614a8
SHA3-384 hash: 760568e8214b4c6d7c908f0156a525e1af721b51b4f0f60f42d8bfc7200aba454481ecb30a26c7ce680777f679f1383b
SHA1 hash: 823f0f10fe938504503a8331e4f890b15f123ad8
MD5 hash: bf7b01b358903416117bc4de8e0861b2
humanhash: sweet-earth-crazy-apart
File name:bf7b01b358903416117bc4de8e0861b2
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:201'216 bytes
First seen:2021-06-14 15:52:46 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 3072:roMgdkKzePs84KnobXZRQt+YXX4K7jOUplSZ9z6ppDwWHn4vWq9iqegiR+U8dKNo:0MScBHwW7zpo9eV94vkxChWc6P3
Threatray 1'136 similar samples on MalwareBazaar
TLSH A614AE42B79A8731D5095972C5D7593103E7E7CB2673E7493E8C02C61F02BEE8E99B88
Reporter zbetcheckin
Tags:32 AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
284
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
remittance advice ref-20210713033718012.cab
Verdict:
Malicious activity
Analysis date:
2021-06-14 13:21:24 UTC
Tags:
trojan rat asyncrat
Link:
https://app.any.run/tasks/44c61796-06f9-4428-b3da-daaa99222dda

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.25015.29820.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a file
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Running batch commands
Creating a process with a hidden window
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/dbeb83da-78f9-4753-8cd6-d8f75962772e
Result
Threat name:
AgentTesla AsyncRAT Matiex Neshta
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/801905
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
Creates an undocumented autostart registry key
Drops PE files with a suspicious file extension
Found malware configuration
Infects executable files (exe, dll, sys, html)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
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 steal Mail credentials (via file access)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AsyncRAT
Yara detected Beds Obfuscator
Yara detected Costura Assembly Loader
Yara detected Matiex Keylogger
Yara detected MultiObfuscated
Yara detected Neshta
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 434301 Sample: 8VFicFtNS6 Startdate: 14/06/2021 Architecture: WINDOWS Score: 100 65 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->65 67 Found malware configuration 2->67 69 Antivirus detection for dropped file 2->69 71 16 other signatures 2->71 10 8VFicFtNS6.exe 3 2->10         started        process3 file4 51 C:\Users\user\AppData\...\8VFicFtNS6.exe.log, ASCII 10->51 dropped 93 Antivirus detection for dropped file 10->93 95 Machine Learning detection for dropped file 10->95 97 Writes to foreign memory regions 10->97 99 2 other signatures 10->99 14 aspnet_compiler.exe 2 7 10->14         started        18 aspnet_compiler.exe 10->18         started        20 aspnet_compiler.exe 10->20         started        signatures5 process6 dnsIp7 61 136.144.41.4, 4771, 49714, 49718 WORLDSTREAMNL Netherlands 14->61 63 127.0.0.1 unknown unknown 14->63 53 C:\Users\user\AppData\Local\Temp\kwffpc.exe, PE32 14->53 dropped 22 cmd.exe 1 14->22         started        25 cmd.exe 1 14->25         started        file8 process9 signatures10 81 Suspicious powershell command line found 22->81 83 Bypasses PowerShell execution policy 22->83 27 powershell.exe 13 22->27         started        29 conhost.exe 22->29         started        31 conhost.exe 25->31         started        33 timeout.exe 1 25->33         started        process11 process12 35 kwffpc.exe 4 27->35         started        file13 43 C:\Windows\svchost.com, PE32 35->43 dropped 45 C:\Users\user\Desktop\8VFicFtNS6.exe, PE32 35->45 dropped 47 C:\Users\user\AppData\Local\...\DismHost.exe, PE32 35->47 dropped 49 8 other malicious files 35->49 dropped 73 Antivirus detection for dropped file 35->73 75 Creates an undocumented autostart registry key 35->75 77 Machine Learning detection for dropped file 35->77 79 2 other signatures 35->79 39 kwffpc.exe 16 2 35->39         started        signatures14 process15 dnsIp16 55 checkip.dyndns.org 39->55 57 api.telegram.org 149.154.167.220, 443, 49742 TELEGRAMRU United Kingdom 39->57 59 3 other IPs or domains 39->59 85 Antivirus detection for dropped file 39->85 87 Multi AV Scanner detection for dropped file 39->87 89 May check the online IP address of the machine 39->89 91 2 other signatures 39->91 signatures17
Detection:
asyncrat
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f2ed40ab9c2eb52484d79b485a78e2779dd300b7513eac17ec4e39fd4a9614a8/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-06-14 15:53:07 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6lwubk44f22sjbgxtnefu6hco6o5gafxke7kyf7mjy472suwcsua._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
masslogger
Create hunting rule
Similar samples:
0283c0f02307adc4ee46c0382df4b5d7b4eb80114fbaf5cb7fe5412f027d165e
AsyncRAT
13d0b9cc42969b85ff7742d9976eeb409e4d662c28aeeb5f2092c93accd6b845
AsyncRAT
2657a10c7ccd83fe042c172a67c31c3a40dfff1c97cc7549533b2af8de2eb88e
AsyncRAT
35781f59dd0d4db4313b493ba0f80606f0f999c904e72a2dd76b0cb111678cde
AsyncRAT
4b9c39b0624ed5da7d8ffeb5b8de89562a0ba2db40e4899160fdd1e51efa63ea
AsyncRAT
4ba041292881b73bc2cf7842f17b64eeca555b209577f5ea842fbeaa30f05ea0
AsyncRAT
5d39d8514724cc23cd2f0265a46345bd10118e699516f3075b376def2004d5fb
AsyncRAT
b2ae47f62aa239fb6badfb8af83054c008e9c93d6fe1953732ec03029dc474ce
AsyncRAT
d32f34638ac6c33cd00dc1c394f9479e5abb88dfe66f5447e2b491bd8d15fea7
AsyncRAT
fa34352f3aec8d28f7e9ebc21a01c3a32e98620790ca91e29ad385919c0e213d
AsyncRAT
+ 1'126 additional samples on MalwareBazaar
Result
Malware family:
matiex
Create hunting rule
Score:
  10/10
Tags:
family:asyncrat family:matiex keylogger persistence rat spyware stealer
Link:
https://tria.ge/reports/210614-ye6rt9mdn2/
Behaviour
Delays execution with timeout.exe
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
Async RAT payload
AsyncRat
Matiex
Matiex Main Payload
Modifies system executable filetype association
Malware Config
C2 Extraction:
127.0.0.1:4771
136.144.41.4:4771
Unpacked files
SH256 hash:
25efe3e31ccb1a8afafe857adcd3d1bb13c9e85b591e536bcddd9595ea6d13df
MD5 hash:
3b802a6a30d8696be598680179c37c7e
SHA1 hash:
bb3d597b0f384857d365b0fdc0bb18ce0be506ed
Detections:
win_asyncrat_w0
Create hunting rule
Link:
https://www.unpac.me/results/e8994ed2-5a9b-4444-9f9f-3c6e78531f0b/
SH256 hash:
f2ed40ab9c2eb52484d79b485a78e2779dd300b7513eac17ec4e39fd4a9614a8
MD5 hash:
bf7b01b358903416117bc4de8e0861b2
SHA1 hash:
823f0f10fe938504503a8331e4f890b15f123ad8
Link:
https://www.unpac.me/results/e8994ed2-5a9b-4444-9f9f-3c6e78531f0b/
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/f2ed40ab9c2eb52484d79b485a78e2779dd300b7513eac17ec4e39fd4a9614a8

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:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
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:MAL_Neshta_Generic
Create hunting rule
Author:Florian Roth
Description:Detects Neshta malware
Reference:Internal Research
Rule name:pe_imphash
Create hunting rule
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:win_neshta_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Web download

AsyncRAT

Executable exe f2ed40ab9c2eb52484d79b485a78e2779dd300b7513eac17ec4e39fd4a9614a8

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1365621/

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