MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f458911cad980b38b8c73ec5b8755b9b5d0d1ff6906ed78da4d5f6ec79b5acf8. 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: f458911cad980b38b8c73ec5b8755b9b5d0d1ff6906ed78da4d5f6ec79b5acf8
SHA3-384 hash: 118f8c7fbaf4e8edb4898456827bf3f3b1e43b32a12d8a3b7cbefc8dc8bfb69028722e448942834061346a5c28521c26
SHA1 hash: 5d3442c88ec022d2029d91633375e7e19bb60084
MD5 hash: 63c86be77aff4ce6c9b8b05457fc99b9
humanhash: coffee-michigan-butter-whiskey
File name:purchase order.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:998'400 bytes
First seen:2020-09-16 08:37:26 UTC
Last seen:2020-09-16 12:24:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:KZLUMT+pWX9juJoJeZLUMT+pWX9juJoJmz:KWw+00Ww+0cz
Threatray 10'520 similar samples on MalwareBazaar
TLSH 2225120472BD1F02DABE9BF45D64704093F97CA6B553E75E8CE470CA28F6B4089A1E93
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/61688/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.414.3091.28294.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
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
Enabling autorun by creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/467639
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies the hosts file
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)
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 286237 Sample: purchase order.exe Startdate: 16/09/2020 Architecture: WINDOWS Score: 100 64 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->64 66 Found malware configuration 2->66 68 Multi AV Scanner detection for dropped file 2->68 70 14 other signatures 2->70 8 purchase order.exe 6 2->8         started        12 gKWBf.exe 4 2->12         started        15 gKWBf.exe 5 2->15         started        process3 dnsIp4 50 C:\Users\user\AppData\Roaming\awxzgc.exe, PE32 8->50 dropped 52 C:\Users\user\AppData\Local\...\tmp9ED7.tmp, XML 8->52 dropped 54 C:\Users\user\...\purchase order.exe.log, ASCII 8->54 dropped 84 Injects a PE file into a foreign processes 8->84 17 purchase order.exe 2 5 8->17         started        22 schtasks.exe 1 8->22         started        62 192.168.2.1 unknown unknown 12->62 24 gKWBf.exe 12->24         started        26 schtasks.exe 12->26         started        86 Multi AV Scanner detection for dropped file 15->86 88 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->88 90 Machine Learning detection for dropped file 15->90 92 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 15->92 28 schtasks.exe 1 15->28         started        30 gKWBf.exe 2 15->30         started        32 gKWBf.exe 15->32         started        file5 signatures6 process7 dnsIp8 56 yitaipackaging.com 35.213.167.237, 49712, 49717, 587 GOOGLEUS United States 17->56 58 mail.yitaipackaging.com 17->58 44 C:\Users\user\AppData\Roaming\...\gKWBf.exe, PE32 17->44 dropped 46 C:\Users\user\...\gKWBf.exe:Zone.Identifier, ASCII 17->46 dropped 72 Modifies the hosts file 17->72 74 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->74 34 reg.exe 17->34         started        36 conhost.exe 22->36         started        60 mail.yitaipackaging.com 24->60 48 C:\Windows\System32\drivers\etc\hosts, ASCII 24->48 dropped 76 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->76 78 Tries to steal Mail credentials (via file access) 24->78 80 Tries to harvest and steal ftp login credentials 24->80 82 Tries to harvest and steal browser information (history, passwords, etc) 24->82 38 conhost.exe 26->38         started        40 conhost.exe 28->40         started        file9 signatures10 process11 process12 42 conhost.exe 34->42         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f458911cad980b38b8c73ec5b8755b9b5d0d1ff6906ed78da4d5f6ec79b5acf8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-09-16 02:32:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
42
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6rmjchfntaftroghh3c3q5k3tnoq2h7wsbxnpdne2x3oy6nvvt4a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'510 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/200916-hmy7kl445j/
Behaviour
Creates scheduled task(s)
Modifies registry key
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
Drops file in Drivers directory
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/f458911cad980b38b8c73ec5b8755b9b5d0d1ff6906ed78da4d5f6ec79b5acf8

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

rar 7db5974f16db1242a0212877eaf417100c33251811963573ac3eff2b4864fd6f

AgentTesla

Executable exe f458911cad980b38b8c73ec5b8755b9b5d0d1ff6906ed78da4d5f6ec79b5acf8

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 7db5974f16db1242a0212877eaf417100c33251811963573ac3eff2b4864fd6f
Cape
Cape
https://www.capesandbox.com/analysis/61688/

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