MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 251c55b7c7c02eec9a87eca94bb01f653317ef5d8278aeb2b511194d7057a675. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 251c55b7c7c02eec9a87eca94bb01f653317ef5d8278aeb2b511194d7057a675
SHA3-384 hash: 1d3419ca44f92d21d3ff34dcd24706c59b8debb7fcf06b0b72f575fccf52bbd2e6c0260719c2cc324b6017e5d0caab2d
SHA1 hash: 4231dd089d1da4ce774b15141554159215345f08
MD5 hash: b2c133c86d118efc1545951cd95ea295
humanhash: california-tango-kentucky-alpha
File name:po 34443322.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'169'654 bytes
First seen:2020-08-04 07:39:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 00be6e6c4f9e287672c8301b72bdabf3 (116 x RedLineStealer, 70 x AsyncRAT, 55 x AgentTesla)
ssdeep 24576:6NA3R5drXdtx8BfM9xpT1kaaM4d/bS1QYNs0frwdbJNCvt1jZFQYcHO6l3:z5bx8Bf2xpT6NSeYHjwdNCt1jZ63Z
Threatray 785 similar samples on MalwareBazaar
TLSH 91451202FBC388B2E47329364A69F71169BC7D706F35CA5FA7C40D6ED9305415239BA2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mx1uk.supremebox.com
Sending IP: 46.249.205.81
From: shajil Minh <shajil@shaklangroup.com>
Subject: Fwd: REQUEST FOR QUOTATION
Attachment: RFQ314000102697.uue (contains "po 34443322.exe")

AgentTesla SMTP exfil server:
smtp.mail.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/38303/
Detection(s):
Win.Malware.Autoit-7599063-0
Create hunting rule

Win.Dropper.NetWire-9102409-0
Create hunting rule

Win.Dropper.Nanocore-9171334-0
Create hunting rule

SecuriteInfo.com.Troj.NanoCo_TZ.22029.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Sending a UDP request
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Creating a file in the %temp% directory
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Reading critical registry keys
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/408818
Signature
Allocates memory in foreign processes
Contains functionality to register a low level keyboard hook
Drops PE files with a suspicious file extension
Found malware configuration
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)
Sleep loop found (likely to delay execution)
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM autoit script
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 256652 Sample: po 34443322.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 36 smtp.mail.com 2->36 60 Found malware configuration 2->60 62 Yara detected AgentTesla 2->62 64 Yara detected AntiVM autoit script 2->64 66 Drops PE files with a suspicious file extension 2->66 8 po 34443322.exe 25 2->8         started        11 dfnvol.pif 1 2->11         started        13 dfnvol.pif 2->13         started        15 dfnvol.pif 2->15         started        signatures3 process4 file5 34 C:\Users\user\AppData\Roaming\...\dfnvol.pif, PE32 8->34 dropped 17 dfnvol.pif 1 3 8->17         started        21 RegSvcs.exe 2 11->21         started        24 RegSvcs.exe 13->24         started        26 RegSvcs.exe 15->26         started        process6 dnsIp7 32 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 17->32 dropped 44 Writes to foreign memory regions 17->44 46 Allocates memory in foreign processes 17->46 48 Sleep loop found (likely to delay execution) 17->48 50 Injects a PE file into a foreign processes 17->50 28 RegSvcs.exe 2 17->28         started        38 smtp.mail.com 21->38 52 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->52 54 Tries to steal Mail credentials (via file access) 21->54 56 Tries to harvest and steal ftp login credentials 21->56 58 2 other signatures 21->58 file8 signatures9 process10 dnsIp11 40 smtp.mail.com 74.208.5.15, 49743, 49744, 49745 ONEANDONE-ASBrauerstrasse48DE United States 28->40 42 192.168.2.1 unknown unknown 28->42 68 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 28->68 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 28->70 72 Tries to steal Mail credentials (via file access) 28->72 74 3 other signatures 28->74 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/251c55b7c7c02eec9a87eca94bb01f653317ef5d8278aeb2b511194d7057a675/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-03 17:19:00 UTC
AV detection:
32 of 48 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=euofln6hyaxozguh5suuxma7muzrp325qj4k5mvvcemu24cxuz2q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
01d06f60795cc63acabaa25c87909e436a7160a172e59c22f341ebad725998b2
AgentTesla
0dea8bae5ab19f84a596f05732d91b60a1fa93cae6dfbbc1166d127c3e2834a0
AgentTesla
0eb41e962d7be24fe14670c0bda3283dd6db00bbe813d1d93da23c125af8e4dc
AgentTesla
20c92a8fbd7ef9b25f61e93b0bb0c31f95040185aab9965141fbde99c47ea46d
AgentTesla
38701fe4b63d1436ba2e26cc7e268327299b58bcccbf074bfb2cbbcf57ceb2ea
AgentTesla
c584bd401bfecf5f40656ed9af67d2b136413d4d5180aa8b065b375ea6a8eab0
AgentTesla
c67fe1304d6455bcae5c07b3f7fece584628b05d286b68da6e85275f7695b2aa
AgentTesla
cd8770808daf4f97a339438001f0ac7dab0853feb07134e6f7bb2fc3db9581c0
AgentTesla
d35f40a630b2e4b24ec76c354e1e66d927afe339aaba45ff3c750ed52193c910
AgentTesla
e7fa1cf008969a70a894b2947737b69c26abb63378d9d4305b698b223793029f
AgentTesla
+ 775 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200804-t5bbj1lg3j/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Loads dropped DLL
Executes dropped EXE
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/251c55b7c7c02eec9a87eca94bb01f653317ef5d8278aeb2b511194d7057a675

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
Create hunting rule
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.

Malspam

AgentTesla

uue 3aaa569ac86ce43317a239c3ec39d5ac753ca04c6233c9e830c91c59f76d0023

AgentTesla

Executable exe 251c55b7c7c02eec9a87eca94bb01f653317ef5d8278aeb2b511194d7057a675

(this sample)

  
Dropped by
MD5 2af54bec1f72f505471610f6abd3b6d1
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 3aaa569ac86ce43317a239c3ec39d5ac753ca04c6233c9e830c91c59f76d0023
Cape
Cape
https://www.capesandbox.com/analysis/38303/

Comments