MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 176962cff7fd1726db08ef313eae338fbadcdcac32db1ef02dbd24434d2b8b4c. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments

SHA256 hash: 176962cff7fd1726db08ef313eae338fbadcdcac32db1ef02dbd24434d2b8b4c
SHA3-384 hash: 5effa469f1fa08b54ae2df895b6743a8432c332ac286b34169b174c9de7f0e6f0c0f862849ba5c943e9275012c90c10a
SHA1 hash: de355724a4a2f0f4a9abadd0112fbf48a71cbbe2
MD5 hash: 13e7349fd6f9aaabb9a6f09c42a0740a
humanhash: uranus-carolina-bakerloo-green
File name:30072020.pdf.exe
Download: download sample
Signature AgentTesla
File size:790'528 bytes
First seen:2020-07-30 07:44:18 UTC
Last seen:2020-07-30 08:49:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 9049d2d9e4b4ee0c20616207952aadc3 (6 x AgentTesla, 2 x NanoCore, 2 x Loki)
ssdeep 12288:bmHWniVDj9UfMWyW3P5eizRP6wP1HUzCERb+01nERIHakhy5:bliPUEY5ei97FU/bZhc
Threatray 11'159 similar samples on MalwareBazaar
TLSH B4F49D22A2D00837D1671F3C9C0B5764A83DBE102B2B9A476BE51CC85F39671F97E297
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: sellerbulknewscom.top
Sending IP: 106.75.74.104
From: International Purchase Manager <sales@sellerbulknewscom.top>
Subject: 30/07/2020 Remittance
Attachment: 30072020.pdf.zip (contains "30072020.pdf.exe")

AgentTesla SMTP exfil server:
mail.cjcurrent.com:26

Intelligence


File Origin
# of uploads :
2
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Contains functionality to detect sleep reduction / modifications
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Maps a DLL or memory area into another process
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)
Sigma detected: Suspicious Double Extension
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 253909 Sample: 30072020.pdf.exe Startdate: 30/07/2020 Architecture: WINDOWS Score: 100 27 g.msn.com 2->27 31 Found malware configuration 2->31 33 Yara detected AgentTesla 2->33 35 Sigma detected: Suspicious Double Extension 2->35 37 2 other signatures 2->37 7 MttyApp.exe 2->7         started        10 30072020.pdf.exe 2->10         started        12 MttyApp.exe 2->12         started        signatures3 process4 signatures5 39 Detected unpacking (changes PE section rights) 7->39 41 Detected unpacking (overwrites its own PE header) 7->41 43 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->43 14 MttyApp.exe 4 7->14         started        45 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 10->45 47 Maps a DLL or memory area into another process 10->47 49 Contains functionality to detect sleep reduction / modifications 10->49 18 30072020.pdf.exe 2 7 10->18         started        21 MttyApp.exe 4 12->21         started        process6 dnsIp7 51 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->51 53 Tries to steal Mail credentials (via file access) 14->53 55 Tries to harvest and steal ftp login credentials 14->55 57 Tries to harvest and steal browser information (history, passwords, etc) 14->57 29 mail.cjcurrent.com 198.187.29.188, 26, 49737, 49743 NAMECHEAP-NETUS United States 18->29 23 C:\Users\user\AppData\Roaming\...\MttyApp.exe, PE32 18->23 dropped 25 C:\Users\user\...\MttyApp.exe:Zone.Identifier, ASCII 18->25 dropped 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->59 file8 signatures9
Threat name:
Win32.Trojan.DataStealer
Status:
Malicious
First seen:
2020-07-30 07:46:10 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
upx spyware keylogger trojan stealer family:agenttesla persistence
Behaviour
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Reads data files stored by FTP clients
UPX packed file
AgentTesla
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: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_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.

Malspam

AgentTesla

Executable exe 176962cff7fd1726db08ef313eae338fbadcdcac32db1ef02dbd24434d2b8b4c

(this sample)

  
Delivery method
Distributed via e-mail attachment

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