MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569. 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

DCRat

Vendor detections: 16

Intelligence 16 IOCs YARA 9 File information Comments

SHA256 hash:	b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569
SHA3-384 hash:	b4dc52805d40330958cc33cfde6107fdf40e499413e2da6d5a72d47b7ff894b45ea27524e244b10dd2c3fef377d609d5
SHA1 hash:	c4f9560a35323002c2b3ba6b301ee246c0b492ed
MD5 hash:	029e0634d88ff7f6760ea7f9e384e16f
humanhash:	magnesium-bluebird-gee-carolina
File name:	xdSO8lE3J0cV.exe
Download:	download sample
Signature	DCRat Create hunting rule
File size:	48'640 bytes
First seen:	2023-06-29 14:34:31 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	768:BCT3ILNCKi+DiPElJNJN/IisV08Yb8gb2+nhAjcvEgK/JrZVc6KN:BCYms9C0zbTC+VnkJrZVclN
Threatray	2'720 similar samples on MalwareBazaar
TLSH	T1DF236D4037D88136E6BD4B74ADF3A1408679C66B6E03CA596CC454EA2F13FC696036FE
TrID	60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.8% (.SCR) Windows screen saver (13097/50/3) 8.7% (.EXE) Win64 Executable (generic) (10523/12/4) 5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter	pmelson
Tags:	DCRat exe

Intelligence

File Origin

# of uploads :

# of downloads :

313

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

xdSO8lE3J0cV.exe

Verdict:

Malicious activity

Analysis date:

2023-06-29 14:36:52 UTC

Tags:

asyncrat

Link:

https://app.any.run/tasks/be05dd42-cc86-4332-81cc-ead0c5ab3244

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/403802/

Detection(s):

Sanesecurity.Malware.29669.UNOFFICIAL

Win.Malware.Generickdz-9865912-0

Win.Malware.Enigmaprotector-9874743-0

Win.Malware.Enigmaprotector-9881027-0

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Sending a custom TCP request

Using the Windows Management Instrumentation requests

Creating a file in the %temp% directory

Running batch commands

Creating a file

Launching a process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

anti-debug anti-vm configsecuritypolicy evasive hacktool lolbin lolbin mpcmdrun msconfig njrat packed rat regedit replace

Link:

https://www.filescan.io/uploads/649d9697e1b9083ea6dbdffd/reports/4003a620-25fc-407f-b486-5d396e33f6fa/overview

Verdict:

Malicious

Labled as:

Trojan.Agent

Link:

https://www.hybrid-analysis.com/sample/b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569

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:

DCRat

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/0f00f940-28a2-427e-80b0-f2f4c37a3349

Result

Threat name:

AsyncRAT, DcRat

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1263332

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

Found malware configuration

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Snort IDS alert for network traffic

Uses dynamic DNS services

Yara detected AsyncRAT

Yara detected DcRat

Behaviour

Behavior Graph:

Download SVG

Detection:

dcrat

Link:

https://mwdb.cert.pl/sample/b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569/

Threat name:

Win32.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2023-06-29 14:35:05 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 24 (100.00%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wmoaqlpkouhjxzxbz6dg56xpfqjj5a3mlw2udgaitkdulr42ivuq._file

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:june03mr rat

Link:

https://tria.ge/reports/230629-rxz8naec7x/

Behaviour

Delays execution with timeout.exe

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Deletes itself

Async RAT payload

AsyncRat

Malware Config

C2 Extraction:

flugrekorder.duckdns.org:7788

Unpacked files

SH256 hash:

b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569

MD5 hash:

029e0634d88ff7f6760ea7f9e384e16f

SHA1 hash:

c4f9560a35323002c2b3ba6b301ee246c0b492ed

Detections:

DCRat

Link:

https://www.unpac.me/results/89a3196a-cb47-4d55-be4a-17e4f5d97d2c/

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/b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569

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 Create hunting rule
Author:	ditekSHen
Description:	Detects executables embedding bas64-encoded APIs, command lines, registry keys, etc.

Rule name:	INDICATOR_SUSPICIOUS_EXE_DcRatBy Create hunting rule
Author:	ditekSHen
Description:	Detects executables containing the string DcRatBy

Rule name:	INDICATOR_SUSPICIOUS_EXE_WMI_EnumerateVideoDevice Create hunting rule
Author:	ditekSHen
Description:	Detects executables attemping to enumerate video devices using WMI

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:	pe_imphash Create hunting rule

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:	Windows_Trojan_DCRat_1aeea1ac Create hunting rule
Author:	Elastic Security

File information

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

Web download

DCRat

exe b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569

(this sample)

Link

https://www.virustotal.com/gui/file/b31c082dea750e9be6e1cf866efaef2c129e836c5db54198089a8745c79a4569/detection

Delivery method

Distributed via web download

Cape

https://www.capesandbox.com/analysis/403802/

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