MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4fcb20f32c0c827e9f3977a2874dd0acc7163dedcddf56004e03a38a53d720f9. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments

SHA256 hash: 4fcb20f32c0c827e9f3977a2874dd0acc7163dedcddf56004e03a38a53d720f9
SHA3-384 hash: 07778b3f6d716057d3c28e0ceed03de2d483c47ca1b41cd3c2f362f81f556dbae04b8cb4e6df8dee73660a5b423da7ec
SHA1 hash: e9884e51b7a76d18cd43db85715da04402ff78fd
MD5 hash: a0c166b7b5cbc5e9e3debd3133f5a329
humanhash: minnesota-sierra-finch-echo
File name:a0c166b7b5cbc5e9e3debd3133f5a329.exe
Download: download sample
Signature AgentTesla
File size:1'656'984 bytes
First seen:2020-11-11 16:28:53 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:J/pC2jE4v+l03hwkhD39yy6VD///geAL6hi0duvZe6Ip2ReF5HSfwrUBhzChqmZE:s72rneEVb
Threatray 1'110 similar samples on MalwareBazaar
TLSH F875576AF03D285D6ED926E6ED1062ED01DBFD34BCA6910FBC5942C24C40A949EF0DF9
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
AgentTesla SMTP exfil server:
mail.cerak.co.rs:587

Intelligence


File Origin
# of uploads :
1
# of downloads :
65
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a window
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling the 'hidden' option for recently created files
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Contains functionality to hide a thread from the debugger
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 314785 Sample: W7MoFOUl0g.exe Startdate: 12/11/2020 Architecture: WINDOWS Score: 100 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 3 other signatures 2->44 6 W7MoFOUl0g.exe 2->6         started        9 newapp.exe 2->9         started        11 newapp.exe 2->11         started        process3 signatures4 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->46 48 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->48 50 Hides threads from debuggers 6->50 52 Contains functionality to hide a thread from the debugger 6->52 13 W7MoFOUl0g.exe 6->13         started        18 W7MoFOUl0g.exe 6->18         started        20 W7MoFOUl0g.exe 6->20         started        54 Multi AV Scanner detection for dropped file 9->54 56 Machine Learning detection for dropped file 9->56 22 newapp.exe 9->22         started        24 newapp.exe 9->24         started        26 WerFault.exe 9->26         started        process5 dnsIp6 32 cerak.co.rs 217.26.70.150, 49744, 49745, 587 BEOTEL-AShttpwwwbeotelnetRS Serbia 13->32 34 mail.cerak.co.rs 13->34 36 3 other IPs or domains 13->36 28 C:\Users\user\AppData\Roaming\...\newapp.exe, PE32 13->28 dropped 30 C:\Users\user\...\newapp.exe:Zone.Identifier, ASCII 13->30 dropped 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 13->58 60 Tries to steal Mail credentials (via file access) 13->60 62 Tries to harvest and steal ftp login credentials 13->62 64 3 other signatures 13->64 file7 signatures8
Threat name:
ByteCode-MSIL.Infostealer.DarkStealer
Status:
Malicious
First seen:
2020-11-11 18:52:42 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
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:
4fcb20f32c0c827e9f3977a2874dd0acc7163dedcddf56004e03a38a53d720f9
MD5 hash:
a0c166b7b5cbc5e9e3debd3133f5a329
SHA1 hash:
e9884e51b7a76d18cd43db85715da04402ff78fd
SH256 hash:
a95aa178c37c40598eac9eb263ffc9c6e4fd438f6c7033c0e7ebf112ea71eaf5
MD5 hash:
1aa0aeddf194cefc6c56ac9a0c9750a6
SHA1 hash:
3198812e3b5f8c38c5cead069f01af93f2eb15b0
SH256 hash:
21dbc0e4617e215582d52345617b6e3d5abe2e5c4e39ce56b1d0dffc2335df65
MD5 hash:
9c10e357719859946c14de88fb31e9cd
SHA1 hash:
c6cf10d61ff01941b2b99dcb9c8be1a4f14d6269
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ach_AgentTesla_20200929
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information


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

Web download

AgentTesla

Executable exe 4fcb20f32c0c827e9f3977a2874dd0acc7163dedcddf56004e03a38a53d720f9

(this sample)

  
Delivery method
Distributed via web download

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