MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6. 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: f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6
SHA3-384 hash: 8ed956f8e69e71585ee8291a51ec768fcb82f6cecc44aeb92380941ecc05cc8e6cc3b998a71db3d3cce4476bd8fa00be
SHA1 hash: 415dd93ae4fcda969dc2d754f8fbc3e1133e9024
MD5 hash: cd50d67ceed86dfca39f4c375e548ab0
humanhash: johnny-carolina-orange-crazy
File name:cd50d67ceed86dfca39f4c375e548ab0
Download: download sample
Signature AgentTesla
Create hunting rule
File size:29'148 bytes
First seen:2023-07-05 04:35:35 UTC
Last seen:2023-07-05 05:29:49 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 768:WQN1334l7jD3iDJiOQcYMER56VNkeg1mA/XomiHIF:51H4lnD3iDJiOQc92Qfgd4miM
TLSH T121D223565B8C4C61F26AE8B7825EE00E49BCF23630C255C5BD9DE2753B3D14E0B6B1B8
Reporter zbetcheckin
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
128
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
cd50d67ceed86dfca39f4c375e548ab0
Verdict:
Malicious activity
Analysis date:
2023-07-05 04:38:19 UTC
Tags:
opendir exploit cve-2017-11882 loader agenttesla
Link:
https://app.any.run/tasks/a25e1b32-da43-4621-ab4d-ca716cf76560

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

MiscreantPunch.RTF.2017-0199.Obfus.171711.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 in the %temp% directory
Сreating synchronization primitives
Creating a process with a hidden window
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/f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit exploit packed shellcode
Link:
https://www.filescan.io/uploads/64a4f333e1a5d9d48068f0f4/reports/847a3a23-6f6a-4045-afcf-70ea936c92dd/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6
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/1266931
Signature
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
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 network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1266931 Sample: OBHh4ARQn7.rtf Startdate: 05/07/2023 Architecture: WINDOWS Score: 100 82 Malicious sample detected (through community Yara rule) 2->82 84 Antivirus / Scanner detection for submitted sample 2->84 86 Multi AV Scanner detection for dropped file 2->86 88 11 other signatures 2->88 7 EQNEDT32.EXE 12 2->7         started        12 taskeng.exe 1 2->12         started        14 sOFvE.exe 2->14         started        16 3 other processes 2->16 process3 dnsIp4 70 23.95.122.102, 49181, 80 AS-COLOCROSSINGUS United States 7->70 58 C:\Users\user\AppData\...\Temp_Folder.exe, PE32 7->58 dropped 60 C:\Users\user\AppData\...\ugc_ios[1].exe, PE32 7->60 dropped 116 Office equation editor establishes network connection 7->116 118 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->118 18 Temp_Folder.exe 1 8 7->18         started        22 YbOBhQ.exe 2 12->22         started        120 Multi AV Scanner detection for dropped file 14->120 122 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->122 124 May check the online IP address of the machine 14->124 126 Machine Learning detection for dropped file 14->126 24 sOFvE.exe 14->24         started        27 powershell.exe 14->27         started        29 schtasks.exe 14->29         started        128 Adds a directory exclusion to Windows Defender 16->128 130 Injects a PE file into a foreign processes 16->130 31 sOFvE.exe 16->31         started        33 powershell.exe 16->33         started        35 schtasks.exe 16->35         started        file5 signatures6 process7 dnsIp8 52 C:\Users\user\AppData\Roaming\YbOBhQ.exe, PE32 18->52 dropped 54 C:\Users\user\AppData\Local\...\tmpEF6E.tmp, XML 18->54 dropped 90 Multi AV Scanner detection for dropped file 18->90 92 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->92 94 May check the online IP address of the machine 18->94 96 Uses schtasks.exe or at.exe to add and modify task schedules 18->96 37 Temp_Folder.exe 13 4 18->37         started        42 powershell.exe 6 18->42         started        44 schtasks.exe 18->44         started        98 Machine Learning detection for dropped file 22->98 100 Adds a directory exclusion to Windows Defender 22->100 102 Injects a PE file into a foreign processes 22->102 46 YbOBhQ.exe 22->46         started        48 powershell.exe 22->48         started        50 schtasks.exe 22->50         started        72 64.185.227.156, 443, 49184, 49185 WEBNXUS United States 24->72 74 api4.ipify.org 24->74 76 api.ipify.org 24->76 78 api4.ipify.org 31->78 80 api.ipify.org 31->80 104 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 31->104 106 Tries to steal Mail credentials (via file / registry access) 31->106 108 Tries to harvest and steal browser information (history, passwords, etc) 31->108 file9 signatures10 process11 dnsIp12 62 api4.ipify.org 104.237.62.211, 443, 49182 WEBNXUS United States 37->62 64 api.ipify.org 37->64 56 C:\Users\user\AppData\Roaming\...\sOFvE.exe, PE32 37->56 dropped 110 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 37->110 112 Tries to steal Mail credentials (via file / registry access) 37->112 114 Hides that the sample has been downloaded from the Internet (zone.identifier) 37->114 66 173.231.16.76, 443, 49183 WEBNXUS United States 46->66 68 api.ipify.org 46->68 file13 signatures14
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-07-03 10:58:54 UTC
File Type:
Document
Extracted files:
6
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=7b5x2ije2237deaheqe6w34bt3m6rcva7cxaj3dmmpcw5pv5jtda._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230705-e78lkaae36/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Launches Equation Editor
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
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
Accesses Microsoft Outlook profiles
Adds Run key to start application
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
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/f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6

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 f87b7d2124d6b7f190072409eb6f819ed9e88aa0f8ae04ec6c63c56ebebd4cc6

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2676837/

Comments


Avatar
zbet commented on 2023-07-05 04:35:36 UTC

url : hxxp://23.95.122.102/rrc/rrcrrcrrcrrcrrcrrcrrcrrcrrcrrcrrc%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23rrcrrcrrcrrcrrrr.doc