MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5c1ef7cfd4682402744f14978af8383c9153e52db9ecf4926596b898f1dd32da. 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: 5c1ef7cfd4682402744f14978af8383c9153e52db9ecf4926596b898f1dd32da
SHA3-384 hash: 6583726de2b5a7384162d3346ee413980efdeb18e738019f6e6f267640ff028f10f669802afc20e123bd0ef7a3f6c765
SHA1 hash: 7badc5d9850eb66bdc77f5b502058248866703eb
MD5 hash: 412b1896e862ccd8296fe65196f007bf
humanhash: timing-solar-echo-blossom
File name:KJKNHFOPL.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'116'865 bytes
First seen:2020-08-02 11:05:43 UTC
Last seen:2020-08-02 15:12:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat)
ssdeep 24576:tq+JY7YPFIrh1+oZ2/mSzhMKdAgzdCZo5u0STxfK5Ib:N5IrP+oumS1MKdAgoK5u0Sl+Ib
Threatray 1'189 similar samples on MalwareBazaar
TLSH E03512017AC288B2D5731D324A29AB156D3E7C202F358A5FF3D86C6EDD345C1B624BA7
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mx3.pub.mailpod4-cph3.one.com
Sending IP: 185.164.14.40
From: Accounts <iaccounts@badhotelscheveningen.nl>
Subject: Payment
Attachment: Payment details.xls

AgentTesla payload URL:
http://www.irregnancised.com/ikfftie/KJKNHFOPL.exe

AgentTesla FTP exfil server:
ftp.irregnancised.com:21

AgentTesla FTP exfil user name:
zorrob@irregnancised.com

Intelligence

File Origin
# of uploads :
2
# of downloads :
96
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/37176/
Detection(s):
SecuriteInfo.com.Variant.Graftor.709227.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% directory
Running batch commands
Creating a process from a recently created file
Sending a UDP request
Creating a file in the %temp% directory
Deleting a recently created file
Launching a process
Using the Windows Management Instrumentation requests
Reading critical registry keys
Stealing user critical data
Unauthorized injection to a system process
Changing the hosts file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/407167
Signature
Binary is likely a compiled AutoIt script file
Contains functionality to register a low level keyboard hook
Installs a global keyboard hook
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)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 255814 Sample: KJKNHFOPL.exe Startdate: 02/08/2020 Architecture: WINDOWS Score: 88 35 Yara detected AgentTesla 2->35 37 Binary is likely a compiled AutoIt script file 2->37 9 KJKNHFOPL.exe 8 2->9         started        process3 file4 29 C:\Users\user\AppData\...\KJKNHFOPL.sfx.exe, PE32 9->29 dropped 12 cmd.exe 1 9->12         started        process5 process6 14 KJKNHFOPL.sfx.exe 7 12->14         started        17 conhost.exe 12->17         started        file7 31 C:\Users\user\AppData\Roaming\KJKNHFOPL.exe, PE32 14->31 dropped 19 KJKNHFOPL.exe 2 14->19         started        process8 signatures9 39 Binary is likely a compiled AutoIt script file 19->39 22 vbc.exe 15 2 19->22         started        process10 dnsIp11 33 ftp.irregnancised.com 22->33 27 C:\Windows\System32\drivers\etc\hosts, ASCII 22->27 dropped 41 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 22->41 43 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 22->43 45 Tries to steal Mail credentials (via file access) 22->45 47 6 other signatures 22->47 file12 signatures13
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5c1ef7cfd4682402744f14978af8383c9153e52db9ecf4926596b898f1dd32da/
Threat name:
Win32.Trojan.Rasftuby
Create hunting rule
Status:
Malicious
First seen:
2020-08-02 11:07:05 UTC
AV detection:
27 of 48 (56.25%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lqpppt6unasae5cpcslyv6byhsivhzjnxhwpjetfs24jr4o5glna._file
Verdict:
malicious
Similar samples:
0a44ee4a63f01378570de7668ee2daa17534d296a6ff2c45bc14d8f9b07bb837
AgentTesla
1656c8b0d2cf6a2c990f87b2774a242cccc62ce6b9cd725cc5d5b3ef46585734
AgentTesla
61ee3bd82bed03dd0f3fb9bc9b76b7da972a90d3c12c8e4d5e967440a2f04c00
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85d76035d54c26a27f643b8206fae99762ec70c76de69ac6ec5161837a941ecf
AgentTesla
b63239750d318dd30d49256b14c3d82841b562fb1bdabd8ba93f85c18e6edade
AgentTesla
c4a61b581890f575ba0586cf6d7d7d3e0c7603ca40915833d6746326685282b7
AgentTesla
c87a719713c51891fa7b0def4b093441934d9f60ef8bd52951e2efb9a030f59c
AgentTesla
ce06efe2c18c75da9d9535b4328677f4136a3f04ea666d037bf55dce7c9b7c57
AgentTesla
d461810943d78b803fbc9a0ea85d16325af10764243d7d3d6b7b24d52efe685c
AgentTesla
f8166e1205c9dd0761f42f47c8d3e3c944b72b1fd3713a0383040f263987a649
AgentTesla
+ 1'179 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200802-355xjcsta2/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SetThreadContext
Reads user/profile data of local email clients
Loads dropped DLL
Uses the VBS compiler for execution
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Drops file in Drivers directory
Executes dropped EXE
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5c1ef7cfd4682402744f14978af8383c9153e52db9ecf4926596b898f1dd32da

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

Excel file xls 41cb3f4a91d2b82931aa1acbe1b2d6a85df5c2f9d590ea205c80046fbb2aac2b

AgentTesla

Executable exe 5c1ef7cfd4682402744f14978af8383c9153e52db9ecf4926596b898f1dd32da

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/423492/
  
Dropped by
MD5 1467786f539f1cac3347f463ae0f553c
  
Dropped by
SHA256 41cb3f4a91d2b82931aa1acbe1b2d6a85df5c2f9d590ea205c80046fbb2aac2b
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/37176/

Comments