MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311. 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

Formbook

Vendor detections: 18

Intelligence 18 IOCs YARA 16 File information Comments

SHA256 hash:	fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311
SHA3-384 hash:	51f8f003e523e4f0dc63288f3affaae5c932a3432778d84f3db1c888d2778027c7737970aa8c540bd022bbba6df5d8c4
SHA1 hash:	3962e269cf81eb0653e6195545e4be2992b03991
MD5 hash:	b721018d25d93adaa9196639a8e1b7bb
humanhash:	kentucky-tennessee-ten-low
File name:	SecuriteInfo.com.MSIL.Remcos.GWMJE.tr.5284.11742
Download:	download sample
Signature	Formbook Create hunting rule
File size:	729'088 bytes
First seen:	2024-03-12 04:25:17 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep	12288:MobsJTENl3l7z1VYXbFYACkwY9Y5nhs3A6thjmIPHQdLa3fyA17yT+OsqpMDLLR:xYxENlR1V6EYiown2HdfyA1OT+OFa
Threatray	580 similar samples on MalwareBazaar
TLSH	T122F40284353C1E23D2B9F5F84460202847F6661E24A6FBED0ED375DB5AF9F840AA0E57
TrID	69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.0% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.2% (.EXE) Win32 Executable (generic) (4504/4/1) 1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):
dhash icon	d4d4d4d4d4d4c4c4 (15 x AgentTesla, 10 x Formbook, 1 x SnakeKeylogger)
Reporter	SecuriteInfoCom
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

395

Origin country :

Vendor Threat Intelligence

Malware family:

agenttesla

ID:

File name:

fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311.exe

Verdict:

Malicious activity

Analysis date:

2024-03-12 04:26:55 UTC

Tags:

evasion agenttesla stealer

Link:

https://app.any.run/tasks/29084224-c2bb-4d6d-bf9e-54e8c437c07d

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/478691/

Detection(s):

SecuriteInfo.com.MSIL.Remcos.GWMJE.tr.5284.11742.UNOFFICIAL

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a file in the %temp% directory

Launching a process

Unauthorized injection to a recently created process

Restart of the analyzed sample

Creating a file

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending an HTTP GET request

Reading critical registry keys

Sending a custom TCP request

Stealing user critical data

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

packed

Link:

https://www.filescan.io/uploads/65efd95c87137159d43d7e3b/reports/7f924287-973d-4ce0-837b-9e86a9b0fe90/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311

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/e727ef23-7476-4e44-aec9-523cd9b9b288

Result

Threat name:

AgentTesla, PureLog Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1407205

Signature

.NET source code contains method to dynamically call methods (often used by packers)

.NET source code contains potential unpacker

Adds a directory exclusion to Windows Defender

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

Injects a PE file into a foreign processes

Machine Learning detection for dropped file

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for dropped file

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)

Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet

Sigma detected: Scheduled temp file as task from temp location

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)

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected AgentTesla

Yara detected AntiVM3

Yara detected Generic Downloader

Yara detected PureLog Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311

Detection:

agenttesla

Link:

https://mwdb.cert.pl/sample/fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311/

Threat name:

ByteCode-MSIL.Spyware.Negasteal

Status:

Malicious

First seen:

2024-03-12 04:26:09 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

21 of 24 (87.50%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=7n6n3sv6pxx4yemtpj6i2btsu33fymjvk5hby4na45zotuprsmiq._file

Verdict:

malicious

Label(s):

agenttesla_v4

agenttesla

Formbook

7a97e2e571d16bf14763fe2fdf5802a2c01e4d103b7eb98b9784a09b4d9cdc01

Formbook

b478ff97e82ba8a98a92a5d3bd42c23e73aa8507a6f9943e5aac5edbb092b0c4

Formbook

+ 570 additional samples on MalwareBazaar

Result

Malware family:

agenttesla

Score:

10/10

Tags:

family:agenttesla keylogger spyware stealer trojan

Link:

https://tria.ge/reports/240312-e2h4qaac56/

Behaviour

Creates scheduled task(s)

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Looks up external IP address via web service

Checks computer location settings

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:

06a1ae787e808d6287de314be8bec64ef2e0d3bc1bf2ea71ae268c7b8fb19e2d

MD5 hash:

91b39e533d48f5fa25ac604da90b3d8d

SHA1 hash:

f5dadf1e8fcbe64609e4cd78a27e2810f7a6e69e

Link:

https://www.unpac.me/results/7aea4e8a-386f-4435-9931-4251d617f552/

SH256 hash:

c8c1020fe926cc1851b73c1915ad32e2fc393dccb402782aca8f4ea6379ba84d

MD5 hash:

ef7cf89d9ec52b18a8f5b6ee49820f46

SHA1 hash:

dcf9cb9bb3f72ca4b3cc0c00b27bd9ce10b554bb

Link:

https://www.unpac.me/results/7aea4e8a-386f-4435-9931-4251d617f552/

SH256 hash:

b71208861384226004766dd5592edbb76a9604f93e5dc8d75a2424e767bea1ac

MD5 hash:

22e99efa3d44c1ec354e377b8e27faee

SHA1 hash:

9287e5db8d85112a1986f8e9928bcddfffd01b0c

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/7aea4e8a-386f-4435-9931-4251d617f552/

Parent samples :

bebb26a32c9db65ecd6e60f671873d09d5bc0e2321d3bac4651ec8c40c704058
2b9f20a668208149cc54154a7da1238620e1242310f4000a1198b14c0466b2b8
81ea5e0ffd1905e775255d57d6a3661516506c1433132292958da3b0916bbf4b
68864134a67842ac2f863dfd92ec6ad6567571a436663b0bceda9e2ef0222de2
569f0d5aa49829d1b73b49dd9dab911ba5bb9e5697b62e1ef9fc0c1825ffbba6
fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311
e97625746360793777ab1d7dc32d4259332c7f3c81a441eb7850234aabfdf23d

SH256 hash:

0824f83dec27b5f227a72ec2044079f72a85f8807d4e9585b88e39f7151e3c44

MD5 hash:

50030c1c01a172bfb7bd931edbd76ea6

SHA1 hash:

1f1e5566aa920e258ef0e7f88ed57e83f2aa6dd5

Link:

https://www.unpac.me/results/7aea4e8a-386f-4435-9931-4251d617f552/

SH256 hash:

de7916f1619bbe025c0da1c96a3410be4452e548cca450356a92ad2946d7b604

MD5 hash:

52d2513acfe3ad264734d627e5b93783

SHA1 hash:

0b192b47081a949fbd1c908eae0d9a1e1b50167a

Link:

https://www.unpac.me/results/7aea4e8a-386f-4435-9931-4251d617f552/

SH256 hash:

fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311

MD5 hash:

b721018d25d93adaa9196639a8e1b7bb

SHA1 hash:

3962e269cf81eb0653e6195545e4be2992b03991

Link:

https://www.unpac.me/results/7aea4e8a-386f-4435-9931-4251d617f552/

Malware family:

AgentTesla

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fb7cddcabe7d/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/fb7cddcabe7defcc11937a7c8d0672a6f65c3135574e1c71a0e772e9d1f19311

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:	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.

Cape

https://www.capesandbox.com/analysis/478691/

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