MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b6170116eeddf03988722915c4aeb57c1517d32fd5d74f4f7d5c1d3dca4aff54. 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: 17

Intelligence 17 IOCs YARA 17 File information Comments

SHA256 hash:	b6170116eeddf03988722915c4aeb57c1517d32fd5d74f4f7d5c1d3dca4aff54
SHA3-384 hash:	d7a9ae5d86de59af04168c0160d4fbde03ddd809753fc830e1998e10ceb3b7e20486b4355b769bb76891468a2f66242f
SHA1 hash:	fd54908c209c8104518566e9dc12d7a7ecf42ba8
MD5 hash:	c059c7a8562ba10afe69e3b5d76b26fd
humanhash:	four-ink-yankee-colorado
File name:	ID Fakturpdf.exe
Download:	download sample
Signature	AsyncRAT Create hunting rule
File size:	168'768 bytes
First seen:	2023-05-11 05:30:58 UTC
Last seen:	2023-05-13 22:52:15 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep	3072:3fY/TU9fE9PEtuabJFQK6qtElHf1D/LQ0KGYXiZD2fzN5O/4KHQ409TrlT2sb:vYa6abcHxU0TOqD2f64F409vlT2o
Threatray	31 similar samples on MalwareBazaar
TLSH	T152F3F108AB54D473F9630B725A3A6B967EFAFE2221B85A4703506F0D7D37B81D50E312
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):
dhash icon	b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter	abuse_ch
Tags:	AsyncRAT exe RAT

abuse_ch

AsyncRAT C2:
141.98.102.235:16296

Intelligence

File Origin

# of uploads :

# of downloads :

396

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

ID Fakturpdf.exe

Verdict:

Malicious activity

Analysis date:

2023-05-11 05:34:06 UTC

Tags:

trojan rat asyncrat

Link:

https://app.any.run/tasks/8ebf2066-26ff-47ae-9a4a-c49d1258be82

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

AsyncRat

Link:

https://www.capesandbox.com/analysis/388324/

Detection(s):

SecuriteInfo.com.Gen.Variant.Nemesis.22855.19734.26466.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %temp% directory

Creating a window

Creating a file

Creating a file in the %AppData% subdirectories

Unauthorized injection to a recently created process

Sending a custom TCP request

Сreating synchronization primitives

Using the Windows Management Instrumentation requests

Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch

Result

Malware family:

n/a

Score:

5/10

Tags:

n/a

Link:

https://dragonfly.certego.net/analysis/83454/overview

Behaviour

MalwareBazaar

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

comodo nemesis overlay packed remcos shell32.dll

Link:

https://www.filescan.io/uploads/645c7d97a2bbacddad9c0585/reports/d7e1ae3e-57b3-4ea9-ad24-37a9dc24614d/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/b6170116eeddf03988722915c4aeb57c1517d32fd5d74f4f7d5c1d3dca4aff54

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:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/86542c72-e109-4dc4-b2d3-a3e9575c9939

Result

Threat name:

AsyncRAT

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1230524

Signature

.NET source code contains potential unpacker

Antivirus detection for dropped file

Detected unpacking (changes PE section rights)

Detected unpacking (creates a PE file in dynamic memory)

Detected unpacking (overwrites its own PE header)

Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)

Found malware configuration

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Maps a DLL or memory area into another process

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Sample uses string decryption to hide its real strings

Snort IDS alert for network traffic

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Yara detected AsyncRAT

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b6170116eeddf03988722915c4aeb57c1517d32fd5d74f4f7d5c1d3dca4aff54/

Threat name:

Win32.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2023-05-11 05:31:06 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

19 of 24 (79.17%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wylqcfxo3xydtcdsfek4jlvvpqkrpuzp2xlu6t35lqot3ssk75ka._file

Verdict:

malicious

Label(s):

asyncrat

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:agenttesla family:asyncrat botnet:default collection keylogger persistence rat spyware stealer trojan

Link:

https://tria.ge/reports/230511-f7pzwsdg3x/

Behaviour

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

outlook_office_path

outlook_win_path

Enumerates physical storage devices

Suspicious use of SetThreadContext

Accesses Microsoft Outlook profiles

Adds Run key to start application

Loads dropped DLL

Async RAT payload

AgentTesla

AsyncRat

Malware Config

C2 Extraction:

141.98.102.235:16296

Unpacked files

SH256 hash:

b6170116eeddf03988722915c4aeb57c1517d32fd5d74f4f7d5c1d3dca4aff54

MD5 hash:

c059c7a8562ba10afe69e3b5d76b26fd

SHA1 hash:

fd54908c209c8104518566e9dc12d7a7ecf42ba8

Link:

https://www.unpac.me/results/ada1c3da-f98b-4fa5-9d7d-e8866d9f87cb/

Malware family:

AsyncRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b6170116eedd/report/overview.html

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/b6170116eeddf03988722915c4aeb57c1517d32fd5d74f4f7d5c1d3dca4aff54

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:	kevoreilly, JPCERT/CC Incident Response Group
Description:	AsyncRat Payload

Rule name:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

Rule name:	INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse Create hunting rule
Author:	ditekSHen
Description:	Detects file containing reversed ASEP Autorun registry keys

Rule name:	malware_asyncrat Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect AsyncRat in memory
Reference:	internal research

Rule name:	MAL_AsnycRAT Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects AsnycRAT based on it's config decryption routine

Rule name:	MAL_AsyncRAT_Config_Decryption Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects AsnycRAT based on it's config decryption routine

Rule name:	msil_suspicious_use_of_strreverse Create hunting rule
Author:	dr4k0nia
Description:	Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse

Rule name:	MSIL_SUSP_OBFUSC_XorStringsNet Create hunting rule
Author:	dr4k0nia
Description:	Detects XorStringsNET string encryption, and other obfuscators derived from it
Reference:	https://github.com/dr4k0nia/yara-rules

Rule name:	msil_susp_obf_xorstringsnet Create hunting rule
Author:	dr4k0nia
Description:	Detects XorStringsNET string encryption, and other obfuscators derived from it

Rule name:	pe_imphash Create hunting rule

Rule name:	shellcode Create hunting rule
Author:	nex
Description:	Matched shellcode byte patterns

Rule name:	Skystars_Malware_Imphash Create hunting rule
Author:	Skystars LightDefender
Description:	imphash

Rule name:	SUSP_DOTNET_PE_List_AV Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detecs .NET Binary that lists installed AVs

Rule name:	SUSP_Reverse_Run_Key Create hunting rule
Author:	SECUINFRA Falcon Team
Description:	Detects a Reversed Run Key

Rule name:	Windows_Trojan_Asyncrat_11a11ba1 Create hunting rule
Author:	Elastic Security

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

File information

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

Cape

https://www.capesandbox.com/analysis/388324/

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