MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169. 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 25 File information Comments

SHA256 hash:	904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169
SHA3-384 hash:	e4f9ac8ce27a2089a3af2616c626990888c8a530055bb656e821ddd1363b91f215154d1e831133de8804fab88ca700e8
SHA1 hash:	31ce3fd41182c65907ee64186875ffc76c23ef13
MD5 hash:	cfa9388561f27c724138310aa179a19f
humanhash:	nitrogen-potato-oranges-lemon
File name:	Quotation.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	1'923'584 bytes
First seen:	2024-06-25 05:00:04 UTC
Last seen:	2024-06-25 05:33:13 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	8f2ed59ffaf0389477f5411c8b4c37fd (3 x AgentTesla, 3 x Formbook, 3 x RemcosRAT)
ssdeep	49152:1OD+bTI6YTDml4HJPHDQkOBU0f9iygcrxZ3aU5ZxIrRo2ht1N1evkhfRG0KZ+:sv85YZBS
Threatray	3'572 similar samples on MalwareBazaar
TLSH	T11B95BE15E3E801A8E577EB34CA629333CAB1B8561730E58F069CD2452F73EA19B7B315
TrID	72.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 13.2% (.EXE) Win64 Executable (generic) (10523/12/4) 6.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 2.5% (.EXE) OS/2 Executable (generic) (2029/13) 2.5% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter	abuse_ch
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

348

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169.exe

Verdict:

Malicious activity

Analysis date:

2024-06-25 05:07:21 UTC

Tags:

evasion smtp agenttesla stealer

Link:

https://app.any.run/tasks/4609d221-fb89-48ad-bcd4-3caba2448205

Note:

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

Detection(s):

SecuriteInfo.com.Win64.PWSX-gen.25041.31610.UNOFFICIAL

Verdict:

Malicious

Score:

98.2%

Link:

https://cyber-fortress.com/docs/result/index.php?id=667a4f0fff0cdfb06de5f6f9win7simulatehigh_evasion

Tags:

Generic Static Gensteal

Result

Verdict:

Malware

Maliciousness:

Behaviour

Launching a process

Using the Windows Management Instrumentation requests

Сreating synchronization primitives

DNS request

Connection attempt

Sending an HTTP GET request

Reading critical registry keys

Sending a custom TCP request

Creating a window

Stealing user critical data

Unauthorized injection to a system process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

hacktool lolbin microsoft_visual_cc packed regedit remote shell32

Link:

https://www.filescan.io/uploads/667a4f0f0bf5978c0b1222d1/reports/0bdf8567-798e-43b4-b3f3-f0e3de23a15c/overview

Verdict:

Malicious

Labled as:

Win64/GenKryptik.GYXR trojan

Link:

https://www.hybrid-analysis.com/sample/904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169

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/e7de9172-ab00-4076-871e-93709eb22bc8

Result

Threat name:

AgentTesla

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1462130

Signature

AI detected suspicious sample

Allocates memory in foreign processes

Check if machine is in data center or colocation facility

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Contains functionality to log keystrokes (.Net Source)

Found malware configuration

Initial sample is a PE file and has a suspicious name

Injects a PE file into a foreign processes

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)

Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)

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

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)

Writes to foreign memory regions

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/904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-06-25 04:48:04 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

5 of 24 (20.83%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=sbfy4mei3enlhnoaskoxx5ny7zd5cgsidzzktjyijo3na6ybifuq._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

43beb947dc500c4f52f48aa53d1e7784c954d38bf4ef9166c6e1be2f974cb332

AgentTesla

904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169

AgentTesla

90b112bdd91653ba38fbc373ed28c7bf9467f67f64d24f1aca0dd2a4829f245d

AgentTesla

abaa429eee88925f0f73aa43b4baa4a03fd92e0bbdfb51e9a16b7b913d3d5319

AgentTesla

+ 3'562 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240625-fnjnrsvepr/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Looks up external IP address via web service

AgentTesla

Unpacked files

SH256 hash:

904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169

MD5 hash:

cfa9388561f27c724138310aa179a19f

SHA1 hash:

31ce3fd41182c65907ee64186875ffc76c23ef13

Link:

https://www.unpac.me/results/9f6ea655-3e12-4954-b3b4-39dd2c82fd71/

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/904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169

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_type2 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Agenttesla in memory
Reference:	internal research

Rule name:	BitcoinAddress Create hunting rule
Author:	Didier Stevens (@DidierStevens)
Description:	Contains a valid Bitcoin address

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerCheck__MemoryWorkingSet Create hunting rule
Author:	Fernando Mercês
Description:	Anti-debug process memory working set size check
Reference:	http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/

Rule name:	DebuggerCheck__RemoteAPI Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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_SandboxHookingDLL Create hunting rule
Author:	ditekSHen
Description:	Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

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:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SEH__vectored Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

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

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

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 (GUARD_CF)	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::CreateWellKnownSid ADVAPI32.dll::RevertToSelf ADVAPI32.dll::GetSecurityDescriptorLength
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::GetWindowsAccountDomainSid
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessA ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken ADVAPI32.dll::SetThreadToken KERNEL32.dll::VirtualAllocExNuma KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::DeleteVolumeMountPointW KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetVolumeInformationW KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::AllocConsole KERNEL32.dll::FreeConsole KERNEL32.dll::GetConsoleOutputCP KERNEL32.dll::GetConsoleWindow
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileExW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileExW KERNEL32.dll::ReplaceFileW
WIN_BASE_USER_API	Retrieves Account Information	ADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_API	Can Encrypt Files	bcrypt.dll::BCryptDecrypt bcrypt.dll::BCryptDestroyKey bcrypt.dll::BCryptGenRandom bcrypt.dll::BCryptOpenAlgorithmProvider bcrypt.dll::BCryptCloseAlgorithmProvider
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyExW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryInfoKeyW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExA ADVAPI32.dll::RegSetValueExW

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