MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6a183615d915485f9dd3885a278e7f3e5f434123a68a8821ff22f13a92fb5d36. 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: 6a183615d915485f9dd3885a278e7f3e5f434123a68a8821ff22f13a92fb5d36
SHA3-384 hash: c68e279db5ba9892982d8e57704a73a707100a0d57edf20e3d0a727d1be1b5435f7a23e7ef705f5ea41649538b8af3e8
SHA1 hash: d35000ddb026df33aa3986db08de5d9b4159c097
MD5 hash: 049bb09096cbec77d2e92891d7e942e8
humanhash: mike-lactose-xray-berlin
File name:Universal030720.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:714'240 bytes
First seen:2020-08-03 12:59:58 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:vAhTALw5avkcMT6SOqdxW2SxI6i0Z4nNbfhrqq85u8AtLfsByTL:4hTyw5mtm6NqdAj66tunHs0GB
Threatray 10'948 similar samples on MalwareBazaar
TLSH 50E4BE6C7B90896AF45A5FBE9C3611039D34F84BA817F38F25B4126C48BA79CAC01F53
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: abaad.om
Sending IP: 37.49.230.200
From: Syamkumar Korat <syam.kumar@abaad.om>
Subject: Bank Transfer Advice
Attachment: Universal030720.Z (contains "Universal030720.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/37829/
Detection(s):
SecuriteInfo.com.Artemis049BB09096CB.18491.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/407922
Signature
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
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: 256193 Sample: Universal030720.exe Startdate: 03/08/2020 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Yara detected AgentTesla 2->51 53 Yara detected AntiVM_3 2->53 55 2 other signatures 2->55 6 Universal030720.exe 3 2->6         started        10 YYtJku.exe 3 2->10         started        12 YYtJku.exe 2 2->12         started        process3 file4 29 C:\Users\user\...\Universal030720.exe.log, ASCII 6->29 dropped 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->57 59 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->59 61 Injects a PE file into a foreign processes 6->61 14 Universal030720.exe 2 5 6->14         started        19 Universal030720.exe 6->19         started        21 Universal030720.exe 6->21         started        63 Machine Learning detection for dropped file 10->63 23 YYtJku.exe 2 10->23         started        25 YYtJku.exe 10->25         started        27 YYtJku.exe 12->27         started        signatures5 process6 dnsIp7 35 mail.transfastc.com 108.167.160.43, 49739, 49740, 587 UNIFIEDLAYER-AS-1US United States 14->35 31 C:\Users\user\AppData\Roaming\...\YYtJku.exe, PE32 14->31 dropped 33 C:\Users\user\...\YYtJku.exe:Zone.Identifier, ASCII 14->33 dropped 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->37 39 Moves itself to temp directory 14->39 41 Tries to steal Mail credentials (via file access) 14->41 43 Tries to harvest and steal ftp login credentials 23->43 45 Tries to harvest and steal browser information (history, passwords, etc) 23->45 47 Hides that the sample has been downloaded from the Internet (zone.identifier) 23->47 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6a183615d915485f9dd3885a278e7f3e5f434123a68a8821ff22f13a92fb5d36/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-03 13:01:07 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nimdmfozcvef7hotrbncpdt7hzpugqjdu2fiqip7elytvex3lu3a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
068e2be03e22687430eff635ad02df7c819f320888095cf4879802cfdbd83353
AgentTesla
4068afbd6b271b237f97b260260971d8d2cb6b7092687eabc56e3353567f3d50
AgentTesla
453e22919069356ebcdd0761b215364026ac41bbb167a590295bb50dbb30be93
AgentTesla
4f965aee8b694528d2d11d5a80eeee466959650ffcd12b5f0fc28d3a11709e27
AgentTesla
6972fcf47a2db0c5ce7cd905bd12cbbc5155e98f57e1362a8b1a3c94177a2419
AgentTesla
9ab48a539aad8c6729c441a0a32ad02039802420bada44d2bf8aec052255dbde
AgentTesla
d1d753678c6c2a9e8957c508adc44ccd35c79592a826e973528ec146f33d558c
AgentTesla
d83429370b6d814b6ff67dd1736424db4e11e39ee745867f09c98f49fae4e1fc
AgentTesla
ef47e6b46e818e6f3110202391cca1ba74b312d9e2d11dd66e62b59c60b49cda
AgentTesla
f8707020bc0b78ae0fab3bd9794993c4cae406d9f13fcb6098f3321cb6bba515
AgentTesla
+ 10'938 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/200803-egsmlc4hd2/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: RenamesItself
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:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6a183615d915485f9dd3885a278e7f3e5f434123a68a8821ff22f13a92fb5d36

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

z 7b9f5b1b7e2a901ad51bd623fa54e54448f070224fce074f943f7abf1fc44e63

AgentTesla

Executable exe 6a183615d915485f9dd3885a278e7f3e5f434123a68a8821ff22f13a92fb5d36

(this sample)

  
Dropped by
MD5 21e20d0d3add903e1b614eeb25c1a669
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 7b9f5b1b7e2a901ad51bd623fa54e54448f070224fce074f943f7abf1fc44e63
Cape
Cape
https://www.capesandbox.com/analysis/37829/

Comments