MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46. 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: 17

Intelligence 17 IOCs YARA 15 File information Comments

SHA256 hash:	b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46
SHA3-384 hash:	96845036599c7e103b01288717ff7c655e6745d0ac26e1b9f8a5cc1189c414e9de470c40f0f5b29ca1d6a5f37533121e
SHA1 hash:	c68da69262d1e227b9a571365fac2530c19fbef3
MD5 hash:	f7a2deae211b49311fa7f56c1e4566f2
humanhash:	eleven-echo-bravo-two
File name:	1698238384869a5bdcb19e01e7ace6afd63f16d7736354049e6eaf59c6b1f8e1271720444a264.dat-decoded
Download:	download sample
Signature	DCRat Create hunting rule
File size:	48'640 bytes
First seen:	2023-10-25 12:53:06 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep	768:sq+s3pUtDILNCCa+DiETTpDBWOuivW8Yb/gevZ1Cc5VVTtjXvEgK/JbZVc6KN:sq+AGtQOETTpNWOwzbIS1Cc5PxnkJbZI
Threatray	833 similar samples on MalwareBazaar
TLSH	T19C235D403798C136E2FD4BB8ACF2A2458275D6576A03CA5D7CC811EA1B13FC55A136FD
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	abuse_ch
Tags:	base64-decoded DCRat exe ibat21-duckdns-org

abuse_ch

Malware dropped as base64 encoded payload

Intelligence

File Origin

# of uploads :

# of downloads :

348

Origin country :

Vendor Threat Intelligence

Malware family:

asyncrat

ID:

File name:

1698238384869a5bdcb19e01e7ace6afd63f16d7736354049e6eaf59c6b1f8e1271720444a264.dat-decoded

Verdict:

Malicious activity

Analysis date:

2023-10-25 13:01:44 UTC

Tags:

asyncrat

Link:

https://app.any.run/tasks/e605165f-89b2-4687-97fd-6bab1be10268

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/456278/

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

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/65390fea0ca0b018516f471c/reports/405df6ad-07ea-4367-a077-ff8ef18eedad/overview

Verdict:

Malicious

Labled as:

Backdoo.1BBEAE4C

Link:

https://www.hybrid-analysis.com/sample/b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46

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:

AsyncRAT

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/606ee3f7-350c-417e-9817-827a407eaff8

Result

Threat name:

AsyncRAT, DcRat

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1331881

Signature

.NET source code references suspicious native API functions

Antivirus / Scanner detection for submitted sample

Found malware configuration

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Uses dynamic DNS services

Yara detected AsyncRAT

Yara detected DcRat

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46

Detection:

dcrat

Link:

https://mwdb.cert.pl/sample/b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46/

Threat name:

ByteCode-MSIL.Backdoor.AsyncRAT

Status:

Malicious

First seen:

2023-10-24 03:46:27 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

22 of 23 (95.65%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xgnyyuw5m7jktvfyuwdgibllptte6jy6exx6hi5yvxzty4gt3nda._file

Verdict:

malicious

DCRat

456ca399370ae37bc6c08d48765dc8774033196def17a913779491af5ce7067d

DCRat

8071d6607613c65aa69aaf0fa05ca22c67b50d3f231b224726321e8d8bfbcaa6

DCRat

9e8d48b2e481955031b79a7d7b5e41cad46456f87e23b35872384176b4599ed0

DCRat

e6edbb0fb96c996b09c2d5460e3beedc387e49f4d90d85e3ba977a4eb53be0c9

DCRat

fd39f37e9252c859a76f65c193c869826503be3c815eab4e95cd883be307a550

DCRat

+ 823 additional samples on MalwareBazaar

Result

Malware family:

asyncrat

Score:

10/10

Tags:

family:asyncrat botnet:new bendis rat

Link:

https://tria.ge/reports/231025-p47j7shf2t/

Behaviour

Async RAT payload

AsyncRat

Malware Config

C2 Extraction:

ibat21.duckdns.org:1993

Unpacked files

SH256 hash:

b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46

MD5 hash:

f7a2deae211b49311fa7f56c1e4566f2

SHA1 hash:

c68da69262d1e227b9a571365fac2530c19fbef3

Detections:

DCRat

Link:

https://www.unpac.me/results/770b5826-f99a-4d26-90cc-f255c3e353db/

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/b99b8c52dd67d2a9d4b8a58664056b7ce64f271e25efe3a3b8adf33c70d3db46

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:	AcRat Create hunting rule
Author:	Nikos 'n0t' Totosis
Description:	AcRat Payload (based on AsyncRat)

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:	Multifamily_RAT_Detection Create hunting rule
Author:	Lucas Acha (http://www.lukeacha.com)
Description:	Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	NETexecutableMicrosoft Create hunting rule
Author:	malware-lu

Rule name:	Njrat Create hunting rule
Author:	botherder https://github.com/botherder
Description:	Njrat

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

Rule name:	win_asyncrat_unobfuscated Create hunting rule
Author:	Matthew @ Embee_Research
Description:	Detects strings present in unobfuscated AsyncRat Samples. Rule may also pick up on other Asyncrat-derived malware (Dcrat/venom etc)