MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bfb230ed38e2d3a1d6d171b87540b340ea63b833dfadf4ec20a4615ab8368b46. 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: bfb230ed38e2d3a1d6d171b87540b340ea63b833dfadf4ec20a4615ab8368b46
SHA3-384 hash: 06785f3e3d0eee79b508ec25a00d0c4eb17c107d0707598e88fedbc6bba035d550a49326938362c4c0d56a46a86e0f64
SHA1 hash: 25fd4c2d6f4689b7ba4e85a08d47a8c0c75ab7bf
MD5 hash: 3ef69454e47024cfcd1971c3c0763997
humanhash: leopard-arizona-item-yankee
File name:Bukti Transfer.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:933'496 bytes
First seen:2020-08-30 09:07:25 UTC
Last seen:2020-08-30 09:52:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:W7mbkVdo7oRyvcYfHT6ekT5HaBQE0l9n6:r0do7KyypuDwn6
Threatray 9'973 similar samples on MalwareBazaar
TLSH 1915293A3E85A826DA3DCA75406459D1B330E6873B41CB2FB8DB174C9E02E8F7B1615D
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
107
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/53108/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.43746152.13432.25954.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Running batch commands
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/454598
Signature
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an autostart registry key pointing to binary in C:\Windows
Injects a PE file into a foreign processes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Add file from suspicious location to autostart registry
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 279673 Sample: Bukti Transfer.exe Startdate: 30/08/2020 Architecture: WINDOWS Score: 100 40 Antivirus / Scanner detection for submitted sample 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 Yara detected AgentTesla 2->44 46 2 other signatures 2->46 7 Bukti Transfer.exe 6 2->7         started        10 pcalua.exe 1 2->10         started        12 pcalua.exe 1 1 2->12         started        process3 file4 28 C:\Users\user\AppData\...\ruvirxza.exe, PE32 7->28 dropped 30 C:\Users\...\ruvirxza.exe:Zone.Identifier, ASCII 7->30 dropped 32 C:\Users\user\...\Bukti Transfer.exe.log, ASCII 7->32 dropped 14 cmd.exe 1 7->14         started        16 ruvirxza.exe 2 7->16         started        19 ruvirxza.exe 3 10->19         started        process5 signatures6 21 reg.exe 1 1 14->21         started        24 conhost.exe 14->24         started        34 Injects a PE file into a foreign processes 16->34 26 ruvirxza.exe 2 16->26         started        36 Antivirus detection for dropped file 19->36 38 Multi AV Scanner detection for dropped file 19->38 process7 signatures8 48 Creates an autostart registry key pointing to binary in C:\Windows 21->48
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/bfb230ed38e2d3a1d6d171b87540b340ea63b833dfadf4ec20a4615ab8368b46/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-08-28 23:03:50 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=x6zdb3jy4lj2dvwrog4hkqftidvghobt36w7j3baurqvvobwrnda._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
14f5a4291505c26453b17f8f81861a861b6af3c5d25447f409137220383dd14d
AgentTesla
35433f44f00f03bbc4edf627501a3c99eae9aa0bc6c366de8d60e097e53c72dc
AgentTesla
3b4fb17419bd0e04f1ccd704484fd4f26f1a583871924641a52d4f9440301947
AgentTesla
516b29be6f0d91a249adca2b26381bfa5b90cf6a643d1b621095c6425a74795b
AgentTesla
77f8071b30876bb7f99165b4e52c7730f76b3bb5864a04d1a224d0bf6d9f8299
AgentTesla
869e8a26e04953a411e7454c800e022bbbb3825320ab6e3935213357789f0844
AgentTesla
cfefe5d485164b99beeb1aea8faca9e61f8a53d4b742ebf733922a0896511b50
AgentTesla
d17de71fad23c19ea4e181c8fe33be0fc230d15be13e6d3c755c77e7ff1519d5
AgentTesla
ee923a4dd9e77a796c589b01ed52bfd3d5b72502e8307c9c362a2d9f6379d197
AgentTesla
f0b3d714aa71901073c4fa858d345e59396482f33e477b57d04089cb842f20c9
AgentTesla
+ 9'963 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200830-gh26r7e5m2/
Behaviour
AgentTesla Payload
Agenttesla family
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/bfb230ed38e2d3a1d6d171b87540b340ea63b833dfadf4ec20a4615ab8368b46

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

Executable exe bfb230ed38e2d3a1d6d171b87540b340ea63b833dfadf4ec20a4615ab8368b46

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/53108/

Comments