MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79. 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 17 File information Comments

SHA256 hash:	aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79
SHA3-384 hash:	1a2d98e1eee6f221c925a8c63c79655692a748da6b47e15a39ce0562bfdf72c2403091b7b9aa6307ef27c52c5d7e9737
SHA1 hash:	ecc89cdf6f79ca7bf5a0e60cbf1e35d1a5d36554
MD5 hash:	86fad28f9bb29be21fc2c4f2c3a2e680
humanhash:	river-winner-juliet-coffee
File name:	twoAdcxgtkcx.exe
Download:	download sample
Signature	AgentTesla Create hunting rule
File size:	2'550'272 bytes
First seen:	2024-04-03 12:57:47 UTC
Last seen:	2024-04-08 07:50:43 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep	24576:JIy8RpD8QOw2FosEFhmozEiKPUJzWf6TQqWqQfGxsc46n00/InhWxOuKo79cdy18:JIB7IJpPGLTQq8fGSc460qlKo79Axi
Threatray	4'279 similar samples on MalwareBazaar
TLSH	T16BC5BFF478B74F58E1ADCD3BCD50C164FF99930698ABC76D5889EA840946B800C3A77B
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	adrian__luca
Tags:	AgentTesla exe

Intelligence

File Origin

# of uploads :

# of downloads :

307

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79.exe

Verdict:

Malicious activity

Analysis date:

2024-04-03 13:45:50 UTC

Tags:

evasion agenttesla stealer

Link:

https://app.any.run/tasks/70c12d68-d1ac-49b1-a09a-d6ec2a5b6bbe

Note:

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

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a process with a hidden window

Creating a file

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

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

expand lolbin packed remote

Link:

https://www.filescan.io/uploads/660d5280391c61c479147c2b/reports/d0899b95-8b4d-45d6-b305-a598818417f1/overview

Verdict:

Malicious

Labled as:

Trojan.Mardom.MN.Generic

Link:

https://www.hybrid-analysis.com/sample/aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79

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/0441eba9-0c25-442a-8040-a6cfee44b3fc

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1419396

Signature

.NET source code contains potential unpacker

Check if machine is in data center or colocation facility

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

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)

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 Putty / WinSCP information (sessions, passwords, etc)

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

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Costura Assembly Loader

Yara detected Generic Downloader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79/

Threat name:

Win32.Spyware.Negasteal

Status:

Malicious

First seen:

2024-03-26 10:31:12 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

20 of 24 (83.33%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=vkfnxfy2fszfcirec3xtvcdtzdcnmihjezmpsmcoexs4a7dtd54q._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

AgentTesla

15ed690489e8c1fe0d2e74ed0a241eb1b66a440a542744dbb540e4a0c171b89a

AgentTesla

435a9413255eab9eb0aa6c6439dfabdecc47785eec10aaf9a59a0619cb564cff

AgentTesla

da453b1b8927be6d7714036b6089a94641f7eafcac495be86d121543d42b4679

AgentTesla

+ 4'269 additional samples on MalwareBazaar

Result

Malware family:

zgrat

Score:

10/10

Tags:

family:agenttesla family:zgrat keylogger rat spyware stealer trojan

Link:

https://tria.ge/reports/240403-p7qe4add7s/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetThreadContext

Looks up external IP address via web service

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

Detect ZGRat V1

ZGRat

Unpacked files

SH256 hash:

e2826df8d1b4e0f48ce2b5ae4bad143ffed731f501a783e8ffc79dcaaae82e77

MD5 hash:

a45dcd5f38a32199d8c44d4d3ebf6deb

SHA1 hash:

885b8b19552abe299bc624af3d42fe041c405f41

Detections:

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_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/7b13385c-b907-49a4-8492-49bd0846bd55/

SH256 hash:

66231a66c12e6274f16d9bc3ba8097426c06b2cf4ce1b166a87cf28448490645

MD5 hash:

0661382b0c7a11b00a86fd63ca9c1e1f

SHA1 hash:

6ed3222c5160922566ed1b26da3b474b61485d01

Link:

https://www.unpac.me/results/7b13385c-b907-49a4-8492-49bd0846bd55/

SH256 hash:

b95ff794cae8ccf6fda7aa77053c1398a6d5486c1d9c5f2b44effb0eb009758e

MD5 hash:

f7049d683be9947fa179701a5dc0d034

SHA1 hash:

62e2178687a0c85484021d298ec7e4003deec648

Link:

https://www.unpac.me/results/7b13385c-b907-49a4-8492-49bd0846bd55/

SH256 hash:

41117ed82a69b8ccca5119591d4b54559bc110077a6a2ddecb2578e34e1540a9

MD5 hash:

e64bb82b126bc18b1bda390f3c1071f6

SHA1 hash:

1ae48ae5354031df0ce4c84e7a32ec69b39f1cd1

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_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_EXE_Packed_GEN01

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

Link:

https://www.unpac.me/results/7b13385c-b907-49a4-8492-49bd0846bd55/

Parent samples :
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SH256 hash:

2a1929df70fd85624428628b7623e78d640515570bb4a1821bf0d79ef7b088ae

MD5 hash:

4e5a0b22e41b0b8d628dc2b063cbf7ef

SHA1 hash:

06addfe164f063eaf8f686faf6b63f11fb838a6a

Link:

https://www.unpac.me/results/7b13385c-b907-49a4-8492-49bd0846bd55/

SH256 hash:

aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79

MD5 hash:

86fad28f9bb29be21fc2c4f2c3a2e680

SHA1 hash:

ecc89cdf6f79ca7bf5a0e60cbf1e35d1a5d36554

Link:

https://www.unpac.me/results/7b13385c-b907-49a4-8492-49bd0846bd55/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/aa8adb971a2c/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/aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79

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

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

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.

Malspam

AgentTesla

exe aa8adb971a2cb251222416ef3a8873c8c4d620e92658f9304e25e5c07c731f79

(this sample)

Delivery method

Distributed via e-mail attachment

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

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