MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 425a292d93fc938bbf2f3f2b835f5408bf92c7851bfcbbe3746886edb6cceb4b. 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: 6


Intelligence 6 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 425a292d93fc938bbf2f3f2b835f5408bf92c7851bfcbbe3746886edb6cceb4b
SHA3-384 hash: b934dfd553884f1f4888789c4c117ddf385bb785a1257ca8d23e250bac9350da07dbc773ebd03308c0c86b46ea466a57
SHA1 hash: 385f17a986f4a2bb632ed9b6e6e3cd2edf1007c5
MD5 hash: 90f10269f8ec5f44eeed517544711539
humanhash: johnny-alpha-spaghetti-pasta
File name:PO_10044885_Mahler-Besse_2_21_2020.xlsm
Download: download sample
Signature AgentTesla
Create hunting rule
File size:80'173 bytes
First seen:2020-07-30 07:48:54 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 1536:jX/slzpcUkATocf8LFKDvJtwVD1BSw/+ipXDYpUbL8Bvhj:7stuUw1JD1Qw/+ipXDYpaLMN
TLSH E17302B05A029C96C323D372E5BA0D51204F35515219FBAF2D24FAF5950DB790B6C2FB
Reporter abuse_ch
Tags:AgentTesla xlsm


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.etudiant.univ-mayotte.fr
Sending IP: 193.54.33.153
From: Elise VILLE <e.ville@mahler-beslse.com>
Subject: PO_10032885_Mahler-Besse_2_21_2020_1204
Attachment: PO_10044885_Mahler-Besse_2_21_2020.xlsm

AgentTesla payload URL:
http://14cam.com/wp-content/themes/skanda/ThursBisQuit.exe

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

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Creating a file
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Sending an HTTP GET request
Unauthorized injection to a recently created process by context flags manipulation
Creating a process from a recently created file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/403355
Signature
.NET source code contains very large array initializations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
Office process drops PE 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)
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: Suspicious Program Location Process Starts
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 dnsIp2 2 Behavior Graph ID: 253911 Sample: PO_10044885_Mahler-Besse_2_... Startdate: 30/07/2020 Architecture: WINDOWS Score: 100 41 g.msn.com 2->41 43 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->43 51 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->51 53 Found malware configuration 2->53 55 Document exploit detected (drops PE files) 2->55 57 8 other signatures 2->57 8 EXCEL.EXE 32 37 2->8         started        13 Bisquit20.exe 2 2->13         started        15 Bisquit20.exe 2->15         started        signatures3 process4 dnsIp5 45 14cam.com 103.238.225.184, 49716, 80 CLOUDIE-AS-APCloudieLimitedHK Hong Kong 8->45 35 C:\Users\user\AppData\...\ThursBisQuit[1].exe, PE32 8->35 dropped 37 C:\Users\Public\svchost32.exe, PE32 8->37 dropped 59 Document exploit detected (creates forbidden files) 8->59 61 Document exploit detected (process start blacklist hit) 8->61 17 svchost32.exe 3 8->17         started        20 splwow64.exe 8->20         started        22 conhost.exe 13->22         started        24 conhost.exe 15->24         started        file6 signatures7 process8 file9 33 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 17->33 dropped 26 AddInProcess32.exe 2 4 17->26         started        31 WerFault.exe 23 9 17->31         started        process10 dnsIp11 47 smtp.ionos.com 74.208.5.2, 49742, 587 ONEANDONE-ASBrauerstrasse48DE United States 26->47 49 192.168.2.1 unknown unknown 26->49 39 C:\Users\user\AppData\...\Bisquit20.exe, PE32 26->39 dropped 63 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->63 65 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 26->65 67 Tries to steal Mail credentials (via file access) 26->67 69 5 other signatures 26->69 file12 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/425a292d93fc938bbf2f3f2b835f5408bf92c7851bfcbbe3746886edb6cceb4b/
Threat name:
Script-Macro.Trojan.Bluteal
Create hunting rule
Status:
Malicious
First seen:
2020-07-30 07:50:07 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ijncslmt7sjyxpzph4vygx2ubc7zfr4fdp6lxy3uncdo3nwm5nfq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/200730-kh3djqlca6/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Checks processor information in registry
Program crash
Executes dropped EXE
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/425a292d93fc938bbf2f3f2b835f5408bf92c7851bfcbbe3746886edb6cceb4b

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:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
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 xlsm 425a292d93fc938bbf2f3f2b835f5408bf92c7851bfcbbe3746886edb6cceb4b

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/421813/
  
Delivery method
Distributed via e-mail attachment

Comments