MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805. 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: 15


Intelligence 15 IOCs YARA 19 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805
SHA3-384 hash: 4fe02b3fc8d18d8f9291ecc52e845965a2fa6d4f534d73b626ab334c52d848a5eae6177f635a09d1965f6ba3da6dd8ad
SHA1 hash: 8bda4b3f87cf2f4afcee8109bd6a4782927673a0
MD5 hash: abf0c91dfd0dd07fe22058d30f6a8194
humanhash: winner-video-floor-sierra
File name:fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805
Download: download sample
Signature Formbook
Create hunting rule
File size:245'248 bytes
First seen:2024-12-05 15:47:33 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 3072:yltFtRlhNIZHHfmf+plXi3jIIX+uAX9w7LzH/W8wb5xQRKm9j7y:yZtRlhNgHHM+p5ikuANMnH/V5Rp
TLSH T141340E037E88EB15E1A83E3782EF6C2413B2B0C71633960F6F49AF5524516966C7E72D
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
290
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
agentesla.7z
Verdict:
No threats detected
Analysis date:
2024-10-23 15:08:49 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/906db1d4-d14d-4398-af15-07ea7f3dead7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Msilperseus-9956591-0
Create hunting rule

Win.Packed.Generic-10003641-0
Create hunting rule

Win.Packed.Generic-10011753-0
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6751cb3712e85e185e763148
Tags:
keylog lien smtp word
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Setting a keyboard event handler
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
agenttesla anti-vm evasive fingerprint hacktool hook infostealer keylogger lolbin obfuscated remote stealer stealer vbnet windows
Link:
https://www.filescan.io/uploads/6751cb3bcee4c3bc6676a0e7/reports/60905b79-5edc-494b-be00-501233a3e920/overview
Verdict:
Malicious
Labled as:
MSIL.Krypt.Generic
Link:
https://www.hybrid-analysis.com/sample/fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/93797b83-4de1-4563-a510-57eba23b16e9
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1569259
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
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)
Contains functionality to register a low level keyboard hook
Found malware configuration
Installs a global keyboard hook
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 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 Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-10-23 15:09:36 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7phd6vzztl3p5nlkbv33u7ioqlvpzfffchbqfputgszs6bbh3acq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla discovery keylogger spyware stealer trojan
Link:
https://tria.ge/reports/241205-s8rlbsxkem/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
System Location Discovery: System Language Discovery
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
Agenttesla family
Verdict:
Malicious
Tags:
stealer agent_tesla Win.Packed.Msilperseus-9956591-0
YARA:
Agenttesla_type2 AgentTeslaV3 AgentTeslaV5 Windows_Trojan_AgentTesla_ebf431a8 JPCERTCC_Agenttesla_Type2
Link:
https://app.threat.zone/submission/495be6e8-08a7-4b1e-8696-6609fb42c08d
Unpacked files
SH256 hash:
fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805
MD5 hash:
abf0c91dfd0dd07fe22058d30f6a8194
SHA1 hash:
8bda4b3f87cf2f4afcee8109bd6a4782927673a0
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/22d43884-13df-4139-b045-5afc97eba956/
Parent samples :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 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/fbce3f57399af6feb56a0d77ba7d0e82eafc94a511c302be9334b32f0427d805

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: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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RansomPyShield_Antiransomware
Create hunting rule
Author:XiAnzheng
Description:Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)
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.

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments