MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76. 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

AgentTesla

Vendor detections: 17

Intelligence 17 IOCs YARA 18 File information Comments

SHA256 hash:	b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76
SHA3-384 hash:	a1802f89a99626f53881bf03ecd6a523308c6766d4ab4c0f320e375644715d1175dbb5c2926b50244caeba235bf6b9c9
SHA1 hash:	68c60fb13f46f30b96953326cb38d8804fbe180f
MD5 hash:	410edff545cf6edb11276f607b73baaf
humanhash:	december-nitrogen-nineteen-chicken
File name:	SecuriteInfo.com.TrojanX-gen.21872.19160
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	740'352 bytes
First seen:	2024-05-16 11:36:58 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	12288:HM0pei36RGgROivmbSHlVK9Ux/MGFE4UIvZ4FYaYoS/z:HPpp3606MSFVK9IPE4FuYp/
TLSH	T174F412062BE8EB2CD07D1BF4B5A4415147BAA47AB5B3FA4C6ED1A0DF0E367408C2571B
TrID	63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.2% (.SCR) Windows screen saver (13097/50/3) 9.0% (.EXE) Win64 Executable (generic) (10523/12/4) 5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter	SecuriteInfoCom
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

459

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76.exe

Verdict:

Malicious activity

Analysis date:

2024-05-16 11:37:20 UTC

Tags:

agenttesla stealer

Link:

https://app.any.run/tasks/225fa618-a814-426d-890d-2b1e46fb6104

Note:

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

Detection(s):

SecuriteInfo.com.TrojanX-gen.21872.19160.UNOFFICIAL

Gathering data

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Using the Windows Management Instrumentation requests

Reading critical registry keys

DNS request

Connection attempt

Sending a custom TCP request

Stealing user critical data

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/6645efe07c9fb1468fc52208/reports/fdd7d63f-cf34-4793-b04e-43b2735b79dd/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76

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:

Agent Tesla

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/47980fc1-e3e5-4dfe-a745-a2395aff588d

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1442571

Signature

.NET source code contains potential unpacker

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Injects a PE file into a foreign processes

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)

Tries to harvest and steal browser information (history, passwords, etc)

Tries to harvest and steal ftp login credentials

Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)

Tries to steal Mail credentials (via file / registry access)

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76/

Threat name:

Win32.Spyware.Negasteal

Status:

Malicious

First seen:

2024-05-16 10:22:55 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=xegsdkrb2gehpveiael2pcecpl3vdyu7bvuqylzrormjbemczz3a._file

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240516-nq5m1sbb38/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Reads WinSCP keys stored on the system

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

AgentTesla

Unpacked files

SH256 hash:

5d49ed6711b528a3072a734c95c82180b84657452371354360bb226d4804a408

MD5 hash:

59f0c4b84dbf9b43baa360eb4c17ec40

SHA1 hash:

cab5cb3e2bd650dedf3e77c80ad78d826b68bb3e

Detections:

AgentTesla

win_agent_tesla_g2

INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients

Agenttesla_type2

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID

INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients

INDICATOR_EXE_Packed_GEN01

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/432b6280-c243-45d4-ad14-e5e2a30cb3f6/

Parent samples :
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SH256 hash:

f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a

MD5 hash:

d172f59251b97b415b621d302e1be2b7

SHA1 hash:

b1534e603749c901b5ac185f20e281f6be7fa908

Link:

https://www.unpac.me/results/432b6280-c243-45d4-ad14-e5e2a30cb3f6/

SH256 hash:

42c72b013231feba639decbea17e9bd98a76957c48994196aaa0ef48b49c2dbf

MD5 hash:

1ea4b56e8612da4cf42cf62882067a2a

SHA1 hash:

95a9dc411ec4c1114794646cc0cbe4a6e37cd29b

Link:

https://www.unpac.me/results/432b6280-c243-45d4-ad14-e5e2a30cb3f6/

SH256 hash:

27ddc96465ac70b602e730ca4b28018a2875f5aca4215f3d8608b9defc8bf23d

MD5 hash:

1b2614489be216f14010dea5dee50dc5

SHA1 hash:

046c2462662dc3adea1c79121b4d865665850e23

Link:

https://www.unpac.me/results/432b6280-c243-45d4-ad14-e5e2a30cb3f6/

SH256 hash:

b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76

MD5 hash:

410edff545cf6edb11276f607b73baaf

SHA1 hash:

68c60fb13f46f30b96953326cb38d8804fbe180f

Link:

https://www.unpac.me/results/432b6280-c243-45d4-ad14-e5e2a30cb3f6/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b90d21aa21d1/report/overview.html

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/b90d21aa21d18877d4880117a788827af751e29f0d690c2f317458909182ce76

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:	AgentTeslaV3 Create hunting rule
Author:	ditekshen
Description:	AgentTeslaV3 infostealer payload

Rule name:	AgentTeslaV5 Create hunting rule
Author:	ClaudioWayne
Description:	AgentTeslaV5 infostealer payload

Rule name:	AgentTesla_DIFF_Common_Strings_01 Create hunting rule
Author:	schmidtsz
Description:	Identify partial Agent Tesla strings

Rule name:	Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

Rule name:	INDICATOR_EXE_Packed_GEN01 Create hunting rule
Author:	ditekSHen
Description:	Detect packed .NET executables. Mostly AgentTeslaV4.

Rule name:	INDICATOR_SUSPICIOUS_Binary_References_Browsers Create hunting rule
Author:	ditekSHen
Description:	Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many email and collaboration clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many file transfer clients. Observed in information stealers

Rule name:	INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing Windows vault credential objects. Observed in infostealers

Rule name:	malware_Agenttesla_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

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

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

Rule name:	pe_imphash Create hunting rule

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

Rule name:	Windows_Generic_Threat_9f4a80b2 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_AgentTesla_ebf431a8 Create hunting rule
Author:	Elastic Security
Reference:	https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

No further information available

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample