MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 285921447b7223c6f6c6419c9ddfa5d26619286089de7cefa3255aa5f6c3bd51. 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: 285921447b7223c6f6c6419c9ddfa5d26619286089de7cefa3255aa5f6c3bd51
SHA3-384 hash: 7d4b828ba2f32d2df489be0c25b77d6a9c04cfd3b83c1ff01fe1313f3d3aa93f1f6ec6b6c4877ebd14345b264a55dc2c
SHA1 hash: 56eee9eed7bca79c2380ca2f8b88d5938af3cc10
MD5 hash: 16cead8ab91ee65984e242d25310c8eb
humanhash: wisconsin-table-whiskey-nuts
File name:TT SWIFT.PDF.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:447'488 bytes
First seen:2020-08-19 13:04:39 UTC
Last seen:2020-08-19 13:46:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:4Zh7Nc3sAT4M+n9rLA9rLSyTzFP07xU2UZzdX:mN63sq4M8/yvSy/F8t
Threatray 10'670 similar samples on MalwareBazaar
TLSH E694F1087564B39FC42FCE7A94685CB047A22277565BF2139C53D8DAAE0DBD28F049E3
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: gurkhaguard.com.hk
Sending IP: 103.133.106.246
From: GGS <ringo@gurkhaguard.com.hk
Subject: Remittance advice
Attachment: TT SWIFT.PDF.rar (contains "TT SWIFT.PDF.exe")

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
71
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/48540/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.405.15011.14981.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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
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/438083
Signature
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
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
Sigma detected: Suspicious Double Extension
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 an obfuscated file name to hide its real file extension (double extension)
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: 271524 Sample: TT SWIFT.PDF.exe Startdate: 20/08/2020 Architecture: WINDOWS Score: 100 65 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->65 67 Found malware configuration 2->67 69 Sigma detected: Scheduled temp file as task from temp location 2->69 71 11 other signatures 2->71 8 TT SWIFT.PDF.exe 7 2->8         started        12 gKWBf.exe 2->12         started        14 gKWBf.exe 5 2->14         started        process3 file4 51 C:\Users\user\AppData\Roaming\dumIvW.exe, PE32 8->51 dropped 53 C:\Users\user\...\dumIvW.exe:Zone.Identifier, ASCII 8->53 dropped 55 C:\Users\user\AppData\Local\...\tmpA11F.tmp, XML 8->55 dropped 57 C:\Users\user\...\TT SWIFT.PDF.exe.log, ASCII 8->57 dropped 85 Injects a PE file into a foreign processes 8->85 16 TT SWIFT.PDF.exe 2 5 8->16         started        21 schtasks.exe 1 8->21         started        23 gKWBf.exe 12->23         started        25 schtasks.exe 12->25         started        87 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->87 89 Machine Learning detection for dropped file 14->89 91 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->91 27 schtasks.exe 1 14->27         started        29 gKWBf.exe 2 14->29         started        signatures5 process6 dnsIp7 59 yitaipackaging.com 35.213.167.237, 49742, 49754, 587 GOOGLEUS United States 16->59 61 mail.yitaipackaging.com 16->61 45 C:\Users\user\AppData\Roaming\...\gKWBf.exe, PE32 16->45 dropped 47 C:\Windows\System32\drivers\etc\hosts, ASCII 16->47 dropped 49 C:\Users\user\...\gKWBf.exe:Zone.Identifier, ASCII 16->49 dropped 73 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->73 75 Tries to steal Mail credentials (via file access) 16->75 77 Modifies the hosts file 16->77 31 reg.exe 16->31         started        33 conhost.exe 21->33         started        63 mail.yitaipackaging.com 23->63 79 Tries to harvest and steal ftp login credentials 23->79 81 Tries to harvest and steal browser information (history, passwords, etc) 23->81 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 23->83 35 reg.exe 23->35         started        37 conhost.exe 25->37         started        39 conhost.exe 27->39         started        file8 signatures9 process10 process11 41 conhost.exe 31->41         started        43 conhost.exe 35->43         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/285921447b7223c6f6c6419c9ddfa5d26619286089de7cefa3255aa5f6c3bd51/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-18 08:34:33 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=fbmscrd3oir4n5wgigoj3x5f2jtbskdarhphz35devnkl5wdxviq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
1bfdb7e4f0aadba330b6017c2608570e791bfddff789d128ecb5ca9a5a06e6fe
AgentTesla
263573ece93d13d69ed99ea6be5715ca5b15e1877ed09a274ca9cf55f4d16a22
AgentTesla
673aa6ede02270b33f4a7058ec4e31eabd688ca4c75037ed4a7f92470a42a271
AgentTesla
7cc4e45a2448e81c638cf0a84c269d7d926135647f95d318279429587d462e9a
AgentTesla
8ae81522b85b942557d654bd85f719d2a8b539106e787c451f0d2856effc6ca4
AgentTesla
ab79b2c6cca235d1b6a2bfdc550a15497c03d193d622feaa2e48c3006ef7c0b8
AgentTesla
af27bd7180ad756460e32f2ae56db7cbdc8a79e73a36b261a96f803e5b051fd5
AgentTesla
b502f774e9192f77aa713347f2747b67df5a473be721226bf0b2d98bdff8a835
AgentTesla
c9522b2123a5c1d678125fecafc722f82d46c099f6c1cbcca6b95c2911130927
AgentTesla
f749fcdcc06750ec8e3839b52ddd13e9a2023673da83aefe1c13439e1351fab5
AgentTesla
+ 10'660 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/200819-53tl2bnf3x/
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/285921447b7223c6f6c6419c9ddfa5d26619286089de7cefa3255aa5f6c3bd51

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 336770eca71c7ef886e0972687d5d08842eeb3c87554c29c4d7ec1cd8c2f92f9

AgentTesla

Executable exe 285921447b7223c6f6c6419c9ddfa5d26619286089de7cefa3255aa5f6c3bd51

(this sample)

  
Dropped by
MD5 1a575bcc5418c8f3ca26eddb48b6ec23
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/48540/
  
Dropped by
SHA256 336770eca71c7ef886e0972687d5d08842eeb3c87554c29c4d7ec1cd8c2f92f9

Comments