MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 efb71228022fadffdfbeb3664615d3a40f9e4af34d45519d95f823709d90ce9a. 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: 14


Intelligence 14 IOCs YARA 8 File information Comments

SHA256 hash: efb71228022fadffdfbeb3664615d3a40f9e4af34d45519d95f823709d90ce9a
SHA3-384 hash: 616c720169158ec3dd001bdbbea265a361e4c4f86a6c02b522306fc4d5d6f2f80153f8183d63cd6fb4f6001607a63c73
SHA1 hash: 84f397387b43a1faeadc3c61cab7e05ebb61612f
MD5 hash: e7b983dd59bde05525b4ccbd1682e038
humanhash: butter-mockingbird-vermont-island
File name:e7b983dd59bde05525b4ccbd1682e038.exe
Download: download sample
Signature AsyncRAT
File size:49'152 bytes
First seen:2022-08-27 07:11:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 768:mbRJZBILLWQ9+jiwtelDSN+iV08YbygesfDILzTvEgK/JbZVc6KN:mbRq9wtKDs4zb19f0LzTnkJbZVclN
TLSH T162235C4037E8813AF2BD87B5ADF2E2418275E25B5903C65D6CC814EA1F13BD596036FE
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter abuse_ch
Tags:AsyncRAT exe RAT

Intelligence


File Origin
# of uploads :
1
# of downloads :
351
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
asyncrat
ID:
1
File name:
e7b983dd59bde05525b4ccbd1682e038.exe
Verdict:
Malicious activity
Analysis date:
2022-08-27 07:25:16 UTC
Tags:
asyncrat

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-debug anti-vm configsecuritypolicy.exe evasive hacktool mpcmdrun.exe msconfig.exe njrat packed rat regedit.exe
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.
Result
Threat name:
AsyncRAT, DcRat
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected AsyncRAT
Yara detected DcRat
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-08-26 16:04:25 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
33 of 40 (82.50%)
Threat level:
  5/5
Verdict:
malicious
Result
Malware family:
asyncrat
Score:
  10/10
Tags:
family:asyncrat rat
Behaviour
Suspicious use of AdjustPrivilegeToken
Legitimate hosting services abused for malware hosting/C2
Async RAT payload
AsyncRat
Unpacked files
SH256 hash:
efb71228022fadffdfbeb3664615d3a40f9e4af34d45519d95f823709d90ce9a
MD5 hash:
e7b983dd59bde05525b4ccbd1682e038
SHA1 hash:
84f397387b43a1faeadc3c61cab7e05ebb61612f
Please note that we are no longer able to provide a coverage score for Virus Total.

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_EXE_B64_Artifacts
Author:ditekSHen
Description:Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc.
Rule name:INDICATOR_SUSPICIOUS_EXE_DcRatBy
Author:ditekSHen
Description:Detects executables containing the string DcRatBy
Rule name:INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice
Author:ditekSHen
Description:Detects executables attemping to enumerate video devices using WMI
Rule name:MAL_AsnycRAT
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:MAL_AsyncRAT_Config_Decryption
Author:SECUINFRA Falcon Team
Description:Detects AsnycRAT based on it's config decryption routine
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_DOTNET_PE_List_AV
Author:SECUINFRA Falcon Team
Description:Detecs .NET Binary that lists installed AVs

File information


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

Web download

AsyncRAT

Executable exe efb71228022fadffdfbeb3664615d3a40f9e4af34d45519d95f823709d90ce9a

(this sample)

  
Delivery method
Distributed via web download

Comments