MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6
SHA3-384 hash: da828cb34476eb99dc3deff9118ac97c036988c50270b572f4c7cab901ac983a2fd773a82b7dd1d0a7075d841a4f5472
SHA1 hash: a48e37f228273aae3c7752232b4a708ef012be77
MD5 hash: 19d19b7468fada6219bb0a89113dfcbf
humanhash: hot-bacon-north-arkansas
File name:PO No.109480.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:89'739 bytes
First seen:2024-02-01 08:15:36 UTC
Last seen:2024-02-02 12:49:50 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 1536:UwAlRkwAlRkwAlRabITpdGPhAw9WROZiAgKRDq6IbCl:UwAlawAlawAlgypdEd0OQAgKRIbu
TLSH T15B937D6DD34B02698F520377AB1B1E5142BDBA6EF38552B1306C437933EAC3DA1252BD
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 doc

Intelligence

File Origin
# of uploads :
3
# of downloads :
367
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/65bb5345f9733b1319aed4ae/reports/5de5b298-bdb6-46f1-bbad-f56a65f9e119/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=21d14ff9-f5fd-463c-9bbc-79e7d387bd30
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1384580
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1384580 Sample: PO_No.109480.doc Startdate: 01/02/2024 Architecture: WINDOWS Score: 100 37 Multi AV Scanner detection for domain / URL 2->37 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 17 other signatures 2->43 8 WINWORD.EXE 379 20 2->8         started        process3 file4 25 ~WRF{59BFF18C-128D...A-B59222E4BF03}.tmp, Composite 8->25 dropped 11 EQNEDT32.EXE 11 8->11         started        16 EQNEDT32.EXE 48 8->16         started        process5 dnsIp6 35 blueyonderllc.top 172.67.183.155, 443, 49160 CLOUDFLARENETUS United States 11->35 27 C:\Users\user\AppData\Roaming\cat55830.exe, PE32 11->27 dropped 29 C:\Users\user\AppData\Local\...\catzx[1].exe, PE32 11->29 dropped 59 Installs new ROOT certificates 11->59 61 Office equation editor establishes network connection 11->61 63 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 11->63 18 cat55830.exe 2 11->18         started        file7 signatures8 process9 signatures10 45 Antivirus detection for dropped file 18->45 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->47 49 Machine Learning detection for dropped file 18->49 51 Injects a PE file into a foreign processes 18->51 21 cat55830.exe 12 2 18->21         started        process11 dnsIp12 31 api4.ipify.org 173.231.16.76, 443, 49162 WEBNXUS United States 21->31 33 api.ipify.org 21->33 53 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->53 55 Tries to steal Mail credentials (via file / registry access) 21->55 57 Tries to harvest and steal browser information (history, passwords, etc) 21->57 signatures13
Score:
73%
Verdict:
Malware
File Type:
ASCII
Link:
https://malprob.io/report/f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-02-01 03:53:13 UTC
File Type:
Document
Extracted files:
4
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7aqgdtmxoqemc6sly3hapvbtzh7gx2kzj2onnp73mmdpvtoeykta._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240201-j55jcafcc9/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f82061cd9774/report/overview.html
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/f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6

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:INDICATOR_RTF_EXPLOIT_CVE_2017_11882_4
Create hunting rule
Author:ditekSHen
Description:detects RTF variant documents potentially exploiting CVE-2018-0802 or CVE-2017-11882
Rule name:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
Rule name:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

Word file doc f82061cd977408c17a4bc6ce07d433c9fe6be9594e9cd6bffb6306facdc4c2a6

(this sample)

  
Delivery method
Distributed via e-mail attachment

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