MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 681eec22b304d975c119e8b5721abd7b4ee6586361b51dda2c93f5a4c426abe4. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 681eec22b304d975c119e8b5721abd7b4ee6586361b51dda2c93f5a4c426abe4
SHA3-384 hash: 9c2b45ef775271fd6881bfa5d2cb12bbba61b7a9321242c3adf21820602d26ee1c5d9a5990e1f1335f55dc7e5c45404c
SHA1 hash: abf65228c3f2009c5f4d3b826288d8c5cf124bc1
MD5 hash: 66b3d8ab993f04901a4ee312193a33e3
humanhash: oklahoma-comet-magnesium-fifteen
File name:05210379.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:849'920 bytes
First seen:2020-08-07 13:26:43 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:L3UBYx/3ki9Inr2rBejBJrnSJg67O9ZQo1Ks+LFj:LkVi9EjznPWo18
Threatray 10'713 similar samples on MalwareBazaar
TLSH 8305F9B9758A6505D03D2C358C64CAC02B34674BB912CB2FF99A13AC7F9639F73061DA
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: ns21.mizban.com
Sending IP: 185.83.208.40
From: IRAN OFFICE <office@papkomagnet.ir>
Subject: RE:
Attachment: 5lr1vp.iso (contains "05210379.exe")

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
77
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/41653/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Creating a process from a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
48 / 100
Link:
https://www.joesandbox.com/analysis/415313
Signature
.NET source code contains very large array initializations
Creates an autostart registry key pointing to binary in C:\Windows
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: 259917 Sample: 05210379.exe Startdate: 07/08/2020 Architecture: WINDOWS Score: 48 29 Yara detected AgentTesla 2->29 31 Sigma detected: Add file from suspicious location to autostart registry 2->31 33 .NET source code contains very large array initializations 2->33 7 05210379.exe 7 2->7         started        10 pcalua.exe 1 1 2->10         started        12 pcalua.exe 1 2->12         started        process3 file4 25 C:\Users\user\AppData\Roaming\sigj.exe, PE32 7->25 dropped 27 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->27 dropped 14 cmd.exe 1 7->14         started        16 sigj.exe 2 7->16         started        process5 process6 18 reg.exe 1 1 14->18         started        21 conhost.exe 14->21         started        23 InstallUtil.exe 16->23         started        signatures7 35 Creates an autostart registry key pointing to binary in C:\Windows 18->35
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/681eec22b304d975c119e8b5721abd7b4ee6586361b51dda2c93f5a4c426abe4/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-07 13:28:10 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=napoyivtatmxlqiz5c2xegv5pnhomwddmg2r3wrmsp22jrbgvpsa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'703 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200807-xxbyyjt98j/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/681eec22b304d975c119e8b5721abd7b4ee6586361b51dda2c93f5a4c426abe4

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:Warp
Create hunting rule
Author:Seth Hardy
Description:Warp
Rule name:WarpStrings
Create hunting rule
Author:Seth Hardy
Description:Warp Identifying Strings
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

iso f183abfa92052529c31eaa5659f58b3afbde794fb26148dae3c1e6faf3e737d1

AgentTesla

Executable exe 681eec22b304d975c119e8b5721abd7b4ee6586361b51dda2c93f5a4c426abe4

(this sample)

  
Dropped by
MD5 23143ba3a3ed2fe18874e863350aacfb
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/41653/
  
Dropped by
SHA256 f183abfa92052529c31eaa5659f58b3afbde794fb26148dae3c1e6faf3e737d1

Comments