MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bb9ecd9c2bb6b01ce8fe60b5301260dfb60de81c02517a1080dec678f7c1377. 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: 3bb9ecd9c2bb6b01ce8fe60b5301260dfb60de81c02517a1080dec678f7c1377
SHA3-384 hash: 2c73b73f4e896bd8284e5ac0711c7becc3b9a3bf331fd6d8de3e0b675cc9cc58306803a2551a89555d1e0a14d5525389
SHA1 hash: 4f2f21b6ba17b3683804c621a882e45212237b0a
MD5 hash: c86059bf6b9027a20b934ca31210aa5f
humanhash: one-stream-nebraska-bluebird
File name:Bank Letter Head..exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:779'264 bytes
First seen:2020-07-24 10:48:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash a95f64f710239fabb14f8033aa8f32db (5 x AgentTesla, 4 x Loki, 2 x MassLogger)
ssdeep 12288:dIFIvtUFqW6lJMK5/ZCasg48z1IWPhetOLyH/iwjgKYUXuLxv6GolmB+ZlwPiroJ:OktUD6lJMmsL8KWPc1pjgKDXQpolmAkp
Threatray 11'275 similar samples on MalwareBazaar
TLSH 45F4B0E2F2D14833D1A7173BCD1B9E789835BD102D289A466BF55C0CAF396C078762A7
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: gmail.com
Sending IP: 37.49.224.50
From: Anisa ucl swift <anisa.uclswift@gmail.com>
Subject: Re: Pocketing order7242020
Attachment: sample 2.zip (contains "Bank Letter Head..exe")

AgentTesla SMTP exfil server:
smtp.bnb-spa.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
98
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/32161/
Detection(s):
PUA.Win.Adware.Slugin-6803969-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

SecuriteInfo.com.Trojan.Delf.FareIt.Gen.7.18936.27272.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Launching a process
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
Unauthorized injection to a system process
Enabling autorun with Startup directory
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/397270
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 250864 Sample: Bank Letter Head..exe Startdate: 24/07/2020 Architecture: WINDOWS Score: 100 48 Multi AV Scanner detection for submitted file 2->48 50 Detected unpacking (changes PE section rights) 2->50 52 Detected unpacking (overwrites its own PE header) 2->52 54 6 other signatures 2->54 7 Mymp4.exe 2->7         started        10 Mymp4.exe 2->10         started        12 wscript.exe 1 2->12         started        14 Bank Letter Head..exe 2->14         started        process3 signatures4 74 Multi AV Scanner detection for dropped file 7->74 76 Detected unpacking (changes PE section rights) 7->76 78 Detected unpacking (creates a PE file in dynamic memory) 7->78 88 5 other signatures 7->88 16 Mymp4.exe 4 7->16         started        18 notepad.exe 1 7->18         started        80 Writes to foreign memory regions 10->80 82 Allocates memory in foreign processes 10->82 84 Maps a DLL or memory area into another process 10->84 20 Mymp4.exe 10->20         started        23 notepad.exe 10->23         started        26 Bank Letter Head..exe 12->26         started        86 Queues an APC in another process (thread injection) 14->86 28 notepad.exe 1 14->28         started        30 Bank Letter Head..exe 4 14->30         started        process5 file6 56 Tries to steal Mail credentials (via file access) 20->56 58 Tries to harvest and steal ftp login credentials 20->58 60 Tries to harvest and steal browser information (history, passwords, etc) 20->60 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->62 42 C:\Users\user\AppData\Roaming\...\8JKK.vbs, ASCII 23->42 dropped 64 Writes to foreign memory regions 26->64 66 Allocates memory in foreign processes 26->66 68 Maps a DLL or memory area into another process 26->68 32 Bank Letter Head..exe 2 7 26->32         started        36 notepad.exe 1 26->36         started        70 Drops VBS files to the startup folder 28->70 72 Delayed program exit found 28->72 signatures7 process8 file9 38 C:\Users\user\AppData\Roaming\...\Mymp4.exe, PE32 32->38 dropped 40 C:\Users\user\...\Mymp4.exe:Zone.Identifier, ASCII 32->40 dropped 44 Tries to steal Mail credentials (via file access) 32->44 46 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->46 signatures10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3bb9ecd9c2bb6b01ce8fe60b5301260dfb60de81c02517a1080dec678f7c1377/
Threat name:
Win32.Infostealer.Fareit
Create hunting rule
Status:
Malicious
First seen:
2020-07-24 08:56:27 UTC
AV detection:
37 of 48 (77.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ho46zwocxnvqdtup4yfvgajgbx5wbxubyasrpiiibxwgpd34cn3q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
hawkeyekeylogger
Create hunting rule
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AgentTesla
+ 11'265 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
upx persistence spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/200724-q8mj32nk6j/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Drops startup file
Reads user/profile data of web browsers
UPX packed file
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/3bb9ecd9c2bb6b01ce8fe60b5301260dfb60de81c02517a1080dec678f7c1377

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

zip 05478a88ff68598b8304e75cddf2a34fef09d1df3042d7499895a8229c68c662

AgentTesla

Executable exe 3bb9ecd9c2bb6b01ce8fe60b5301260dfb60de81c02517a1080dec678f7c1377

(this sample)

  
Dropped by
MD5 a311ec803aafd4ee55a6232b29b26ec9
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/32161/
  
Dropped by
SHA256 05478a88ff68598b8304e75cddf2a34fef09d1df3042d7499895a8229c68c662

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