MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6ff23317b3fd4003a0564fc1fb737930f144514dcdc25e3fe76d366394ab33b3. 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


Intelligence 9 File information Yara 4 Comments

SHA256 hash: 6ff23317b3fd4003a0564fc1fb737930f144514dcdc25e3fe76d366394ab33b3
SHA3-384 hash: 59d0491c8a9e57984e1659965fb62b2a4b42f2ef94de1e90d384ca6f9767c5989040131485efd3d6390f75527e2884e8
SHA1 hash: 67aa2856c4cfdb89138a133394e05b564f15301e
MD5 hash: 09d113c758e9ac0b7422866eac58415d
humanhash: purple-river-sink-hydrogen
File name:SecuriteInfo.com.Trojan.PWS.Spy.21473.924.1997
Download: download sample
Signature AgentTesla
File size:524'288 bytes
First seen:2020-08-02 05:28:30 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 6144:i+fUYeG3jM3w6YGafWQ03kmyRw6TBqELl2rSLEl5/QAYa68RjAt89Fjb7DlAcFi+:iIP/VLIqc9DbjYOFTRVyI3SOxr
TLSH FDB47B10D7F84AC9E3BA47BDE4B4011087B4B91AA7EAE7591B91F0ED1922710CB13F67
Reporter @SecuriteInfoCom
Tags:AgentTesla

Intelligence


File Origin
# of uploads :
1
# of downloads :
46
Origin country :
US US
Mail intelligence
No data
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %temp% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
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)
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: 255778 Sample: SecuriteInfo.com.Trojan.PWS... Startdate: 02/08/2020 Architecture: WINDOWS Score: 92 32 Found malware configuration 2->32 34 Yara detected AgentTesla 2->34 6 mullar.exe 6 2->6         started        9 SecuriteInfo.com.Trojan.PWS.Spy.21473.924.exe 7 2->9         started        11 mullar.exe 5 2->11         started        process3 signatures4 36 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->36 38 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->38 40 Injects a PE file into a foreign processes 6->40 13 mullar.exe 4 6->13         started        17 SecuriteInfo.com.Trojan.PWS.Spy.21473.924.exe 2 7 9->17         started        20 SecuriteInfo.com.Trojan.PWS.Spy.21473.924.exe 9->20         started        22 mullar.exe 4 11->22         started        process5 dnsIp6 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 13->42 44 Tries to steal Mail credentials (via file access) 13->44 46 Tries to harvest and steal ftp login credentials 13->46 48 Tries to harvest and steal browser information (history, passwords, etc) 13->48 28 bh-58.webhostbox.net 199.79.63.24, 49732, 49737, 49750 PUBLIC-DOMAIN-REGISTRYUS United States 17->28 30 192.168.2.1 unknown unknown 17->30 24 C:\Users\user\AppData\Local\...\mullar.exe, PE32 17->24 dropped 26 C:\Users\user\...\mullar.exe:Zone.Identifier, ASCII 17->26 dropped 50 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->50 52 Installs a global keyboard hook 17->52 file7 signatures8
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-07-24 06:36:00 UTC
AV detection:
23 of 31 (74.19%)
Threat level
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
AgentTesla Payload
AgentTesla

Yara Signatures


Rule name:Agenttesla_type2
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_g2
Author:Daniel Plohmann <daniel.plohmann@fkie.fraunhofer.de>
Rule name:win_agent_tesla_w1
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information


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

Web download

AgentTesla

Executable exe 6ff23317b3fd4003a0564fc1fb737930f144514dcdc25e3fe76d366394ab33b3

(this sample)

  
Delivery method
Distributed via web download

Comments