MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f5a3632e4dc565def5e2a0e015931fd3bca1c19e1045044429bbe3912422e32b. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f5a3632e4dc565def5e2a0e015931fd3bca1c19e1045044429bbe3912422e32b
SHA3-384 hash: 4b6a8e3908995776c5b5d3149e521bb4615baf87dfee70549645733251e83cc32657b0b68210d09495fca01c6ff40ed2
SHA1 hash: 6c5c259788e531ca18fabcd5c3ed9db3f9ed8600
MD5 hash: 09e36a44827320de0eb19fc0b1a91f61
humanhash: cola-butter-grey-cup
File name:Norstar Baltic - Q88.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:737'792 bytes
First seen:2020-08-31 08:29:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:ktX7TDF5sExRpHHaVp6qqk3A/eSSaX790iXP6+udQVB:iHh5sExraVqk3A/1uWu
Threatray 9'665 similar samples on MalwareBazaar
TLSH D2F412413C8CFBA3DDFC47B5889FB95403293C6ACC85ED56B68C43EF2053315952AA6A
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: ew0.711.maxzizo.ml
Sending IP: 165.22.28.160
From: Operation dept. <sm_ops@dowausa.com>
Subject: Norstar Baltic // 30,000mt Benzene // PDA Request
Attachment: Norstar Baltic - Q88.cab (contains "Norstar Baltic - Q88.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
84
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/53307/
Detection(s):
SecuriteInfo.com.W32.Trojan-7.UNOFFICIAL
Create hunting rule

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 %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/455032
Signature
.NET source code contains potential unpacker
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Machine Learning detection for dropped file
Machine Learning detection for sample
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 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 access)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 279891 Sample: Norstar Baltic - Q88.exe Startdate: 31/08/2020 Architecture: WINDOWS Score: 100 37 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->37 39 Found malware configuration 2->39 41 Multi AV Scanner detection for submitted file 2->41 43 7 other signatures 2->43 6 DsWhv.exe 1 2->6         started        9 Norstar Baltic - Q88.exe 1 2->9         started        12 DsWhv.exe 2->12         started        process3 file4 45 Multi AV Scanner detection for dropped file 6->45 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->47 49 Machine Learning detection for dropped file 6->49 51 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->51 14 DsWhv.exe 2 6->14         started        27 C:\Users\...27orstar Baltic - Q88.exe.log, ASCII 9->27 dropped 18 Norstar Baltic - Q88.exe 2 5 9->18         started        21 DsWhv.exe 2 12->21         started        signatures5 process6 dnsIp7 29 mail.maihyundai.com 14->29 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->53 55 Tries to steal Mail credentials (via file access) 14->55 57 Tries to harvest and steal ftp login credentials 14->57 59 Tries to harvest and steal browser information (history, passwords, etc) 14->59 31 maihyundai.com 107.180.26.71, 49745, 49760, 587 AS-26496-GO-DADDY-COM-LLCUS United States 18->31 33 mail.maihyundai.com 18->33 35 192.168.2.1 unknown unknown 18->35 23 C:\Users\user\AppData\Roaming\...\DsWhv.exe, PE32 18->23 dropped 25 C:\Users\user\...\DsWhv.exe:Zone.Identifier, ASCII 18->25 dropped 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->61 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f5a3632e4dc565def5e2a0e015931fd3bca1c19e1045044429bbe3912422e32b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-31 02:14:10 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6wrwglsnyvs555pcudqbley72o6kdqm6cbcqirbjxprzcjbc4mvq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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+ 9'655 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200831-dr4ytzgxzs/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
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
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f5a3632e4dc565def5e2a0e015931fd3bca1c19e1045044429bbe3912422e32b

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

cab 9519e533283ebeaacc4f04577216c2df7b8bdd0f17df36fa55c4c95469b44b39

AgentTesla

Executable exe f5a3632e4dc565def5e2a0e015931fd3bca1c19e1045044429bbe3912422e32b

(this sample)

  
Dropped by
MD5 4a1e8317834f19090658c5e6fc52ebf9
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 9519e533283ebeaacc4f04577216c2df7b8bdd0f17df36fa55c4c95469b44b39
Cape
Cape
https://www.capesandbox.com/analysis/53307/

Comments