MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762
SHA3-384 hash: ccc3e7bdbeabe7393edd535999973fee3f21057578d0187e0a5ba1dcee6f27807b4540682aa74125e50cc8bd2b1c7bd9
SHA1 hash: f9e589ba07c52dbd7c067982637bb4d84d161667
MD5 hash: 9d7082961f5f3573a91e9b74d03e9fae
humanhash: kansas-paris-early-lamp
File name:9d7082961f5f3573a91e9b74d03e9fae
Download: download sample
Signature AgentTesla
Create hunting rule
File size:15'320 bytes
First seen:2023-03-16 09:11:26 UTC
Last seen:2023-03-16 11:37:16 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:fkQ3lHbuXuguc/UxdHX6u8/qEPIatrlALwUyFe7PQgrWtdGew:s677g3UxRX+/q6IadlfejWt0
TLSH T17962D5811B8D98F2D369E1378229900E09BDF17B34470AE4B8DDD56537BEA0D4AF82B5
Reporter zbetcheckin
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
107
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
PI.docx
Verdict:
Malicious activity
Analysis date:
2023-03-16 07:45:08 UTC
Tags:
opendir exploit cve-2017-11882 loader agenttesla
Link:
https://app.any.run/tasks/77102947-bc23-4f80-a009-706705673f69

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file
Сreating synchronization primitives
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
RTF File
Link:
https://app.docguard.net/be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
CVE-2017-11882 embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/6412dd641c54c71b12ab736a/reports/9bc4e763-c813-4d3c-ab20-4bb74fcf9d5c/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla, zgRAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1194803
Signature
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Drops PE files to the user root directory
Injects a PE file into a foreign processes
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 dropped file
Multi AV Scanner detection for submitted file
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 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)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Scheduled temp file as task from temp location
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Generic Downloader
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 827704 Sample: vRIj8YNZfn.rtf Startdate: 16/03/2023 Architecture: WINDOWS Score: 100 63 Multi AV Scanner detection for domain / URL 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Antivirus detection for URL or domain 2->67 69 15 other signatures 2->69 7 EQNEDT32.EXE 12 2->7         started        12 taskeng.exe 1 2->12         started        14 WINWORD.EXE 291 23 2->14         started        process3 dnsIp4 47 23.94.231.188, 49171, 80 AS-COLOCROSSINGUS United States 7->47 41 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 7->41 dropped 43 C:\Users\Public\vbc.exe, PE32 7->43 dropped 79 Office equation editor establishes network connection 7->79 81 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->81 16 vbc.exe 1 8 7->16         started        20 dnQFLCEmWnEf.exe 2 12->20         started        45 ~WRF{58E1F7FE-98BE...1-7BEC910C6CBA}.tmp, Composite 14->45 dropped file5 signatures6 process7 file8 37 C:\Users\user\AppData\...\dnQFLCEmWnEf.exe, PE32 16->37 dropped 39 C:\Users\user\AppData\Local\Temp\tmp37A.tmp, XML 16->39 dropped 49 Multi AV Scanner detection for dropped file 16->49 51 Machine Learning detection for dropped file 16->51 53 Uses schtasks.exe or at.exe to add and modify task schedules 16->53 55 Injects a PE file into a foreign processes 16->55 22 RegSvcs.exe 16->22         started        25 RegSvcs.exe 2 16->25         started        27 powershell.exe 6 16->27         started        29 schtasks.exe 16->29         started        57 Writes to foreign memory regions 20->57 59 Allocates memory in foreign processes 20->59 61 Adds a directory exclusion to Windows Defender 20->61 31 RegSvcs.exe 2 20->31         started        33 schtasks.exe 20->33         started        35 powershell.exe 20->35         started        signatures9 process10 signatures11 71 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 22->71 73 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 22->73 75 Tries to steal Mail credentials (via file / registry access) 31->75 77 Tries to harvest and steal browser information (history, passwords, etc) 31->77
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-03-16 08:49:05 UTC
File Type:
Document
Extracted files:
4
AV detection:
16 of 39 (41.03%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xy6iqazk43uughmg4tmsbgypxyxrk6z2qu44ypj27nqpdgc3q5ra._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/230316-k56xvaab27/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
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
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla payload
AgentTesla
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/be3c88032ae6/report/overview.html
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/be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762

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_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.

Web download

AgentTesla

Rich Text Format (RTF) rtf be3c88032ae6e9431d86e4d9209b0fbe2f157b3a8539cc3d3afb60f1985b8762

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2573369/

Comments


Avatar
zbet commented on 2023-03-16 09:11:33 UTC

url : hxxp://23.94.231.188/97..........................97.......................doc