MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c20854beeb11adc316f75f01b88cbb0ee65111accea0a199e14d2a03308a006e. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c20854beeb11adc316f75f01b88cbb0ee65111accea0a199e14d2a03308a006e
SHA3-384 hash: 411c58e8437acde99804f5e5682b398c4a7a29b6794a3966e73d5a44c0eecf0ecb5c02fe053eab29fe5a41a953e58489
SHA1 hash: e9e3673ebfbb9432344fa218068ba8c2cdd17966
MD5 hash: 29b53288aa60cce5d85ef5f028ce678a
humanhash: purple-emma-helium-fruit
File name:PO-468468-MES.scr
Download: download sample
Signature AgentTesla
Create hunting rule
File size:722'312 bytes
First seen:2020-10-05 11:35:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:xRNAo1UyI57m0/sOKIbu6d5+9H/MNSa6VfQam2pUIbrR8r:RAGjOKIb7+GgaqfQabUrr
Threatray 10'205 similar samples on MalwareBazaar
TLSH 9BE495BAA47A54A1A6CE713E9D0044630B7526FBFB7685A030FE2105E70CE8A5D5CFF1
Reporter abuse_ch
Tags:AgentTesla scr


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: srv3.hostingafull.com
Sending IP: 198.46.134.157
From: Francisco Martinez <infomexico@mesinc.net>
Subject: PO-468468-MES
Attachment: PO-468468-MES.zip (contains "PO-468468-MES.scr")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
91
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/68153/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
Sending a UDP request
Adding an access-denied ACE
Creating a window
Using the Windows Management Instrumentation requests
Launching the default Windows debugger (dwwin.exe)
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Stealing user critical data
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Enabling autorun
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/481311
Signature
Binary contains a suspicious time stamp
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 293098 Sample: PO-468468-MES.scr Startdate: 05/10/2020 Architecture: WINDOWS Score: 100 55 mail.nsmelectronics.com 2->55 59 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->59 61 Found malware configuration 2->61 63 Yara detected AgentTesla 2->63 65 4 other signatures 2->65 8 PO-468468-MES.exe 3 4 2->8         started        12 PO-468468-MES.exe 2 2->12         started        14 PO-468468-MES.exe 2 2->14         started        16 5 other processes 2->16 signatures3 process4 file5 49 C:\Users\user\AppData\...\PO-468468-MES.exe, PE32 8->49 dropped 51 C:\...\PO-468468-MES.exe:Zone.Identifier, ASCII 8->51 dropped 85 Creates an undocumented autostart registry key 8->85 87 Creates autostart registry keys with suspicious names 8->87 89 Creates multiple autostart registry keys 8->89 91 Drops PE files to the startup folder 8->91 18 InstallUtil.exe 2 8 8->18         started        22 InstallUtil.exe 8->22         started        24 timeout.exe 1 8->24         started        26 WerFault.exe 23 9 8->26         started        93 Writes to foreign memory regions 12->93 95 Hides threads from debuggers 12->95 97 Injects a PE file into a foreign processes 12->97 28 InstallUtil.exe 12->28         started        33 2 other processes 12->33 30 InstallUtil.exe 14->30         started        35 2 other processes 14->35 37 4 other processes 16->37 signatures6 process7 dnsIp8 57 mail.nsmelectronics.com 103.14.97.85, 49756, 49757, 49775 TRUNKOZ-INTrunkozTechnologiesPvtLtdIN India 18->57 67 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->67 69 Tries to steal Mail credentials (via file access) 18->69 71 Creates multiple autostart registry keys 18->71 73 Installs a global keyboard hook 18->73 75 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 22->75 77 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 22->77 39 conhost.exe 24->39         started        79 Tries to harvest and steal ftp login credentials 28->79 81 Tries to harvest and steal browser information (history, passwords, etc) 28->81 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->83 53 C:\Users\user\AppData\Roaming\...\window.exe, PE32 30->53 dropped 41 conhost.exe 33->41         started        43 conhost.exe 35->43         started        45 conhost.exe 37->45         started        47 conhost.exe 37->47         started        file9 signatures10 process11
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c20854beeb11adc316f75f01b88cbb0ee65111accea0a199e14d2a03308a006e/
Threat name:
ByteCode-MSIL.Infostealer.CoinStealer
Create hunting rule
Status:
Malicious
First seen:
2020-10-05 10:05:28 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=yiefjpxlcgw4gfxxl4a3rdf3b3tfcenmz2qkdgpbjuvagmekabxa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'195 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/201005-fpwsybw242/
Behaviour
Delays execution with timeout.exe
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
Drops startup file
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
Modifies WinLogon for persistence
Unpacked files
SH256 hash:
c20854beeb11adc316f75f01b88cbb0ee65111accea0a199e14d2a03308a006e
MD5 hash:
29b53288aa60cce5d85ef5f028ce678a
SHA1 hash:
e9e3673ebfbb9432344fa218068ba8c2cdd17966
Link:
https://www.unpac.me/results/fc69603a-0931-42e7-8bda-14762ef957d6/
SH256 hash:
9bed9234ecf2562e95a719b63022bb59100ebd4bb03268ce02bca409edf31379
MD5 hash:
8af1b402820294531152c4c292e60bf6
SHA1 hash:
fbf71e35ca174a5fa457fbb89a1451e27abc081b
Link:
https://www.unpac.me/results/fc69603a-0931-42e7-8bda-14762ef957d6/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c20854beeb11adc316f75f01b88cbb0ee65111accea0a199e14d2a03308a006e

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_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla
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

zip 32e2ffdfbaa4e01b56383b5b6319d2ba57d8579b7c63abbf3e87916046298140

AgentTesla

Executable exe c20854beeb11adc316f75f01b88cbb0ee65111accea0a199e14d2a03308a006e

(this sample)

  
Dropped by
MD5 b75bed1dfb6dee371699a70db11e2877
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 32e2ffdfbaa4e01b56383b5b6319d2ba57d8579b7c63abbf3e87916046298140
Cape
Cape
https://www.capesandbox.com/analysis/68153/

Comments