MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f. 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: 56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f
SHA3-384 hash: 06b1478dca6d27c18975829eaf94a58d5e14a743d260ddf64cb7bbb6b9ab8ce98190ccb2d863a8ea04d88b2a0d77e5bf
SHA1 hash: 2d12d302a7c537c9d84fd8ba97af28ab40a4ca60
MD5 hash: c3e8b482ed3986690fcdc9cbab9a0b7f
humanhash: summer-purple-florida-aspen
File name:c3e8b482ed3986690fcdc9cbab9a0b7f
Download: download sample
Signature AgentTesla
Create hunting rule
File size:13'567 bytes
First seen:2023-03-23 14:58:42 UTC
Last seen:2023-03-23 16:28:45 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 384:re9UNiVKlM2d1iJB2XqVlOlrzgw12LVntOZnD6Ewbm1H:rzikbY7l+rkwenknD9am1H
TLSH T1845292401BCD94F2D328E1778229810E09FEF776389315DDB88DE6913BBD20D4AB91B5
Reporter zbetcheckin
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
114
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
c3e8b482ed3986690fcdc9cbab9a0b7f
Verdict:
Malicious activity
Analysis date:
2023-03-23 15:04:19 UTC
Tags:
opendir exploit cve-2017-11882 loader agenttesla
Link:
https://app.any.run/tasks/b8d2c1bf-5e9d-4539-aead-41669c434f96

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Exploit.RTF-ObfsObjDat.Gen.15008.10965.UNOFFICIAL
Create hunting rule

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
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/56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
83%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/641c693c009023b71dc28586/reports/d31fec9a-4407-4f1f-96f2-97192605bf5c/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1200494
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
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)
Modifies the hosts file
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)
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
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 / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 833397 Sample: WIySbJNpza.rtf Startdate: 23/03/2023 Architecture: WINDOWS Score: 100 73 Snort IDS alert for network traffic 2->73 75 Malicious sample detected (through community Yara rule) 2->75 77 Antivirus detection for URL or domain 2->77 79 16 other signatures 2->79 7 EQNEDT32.EXE 12 2->7         started        12 taskeng.exe 1 2->12         started        14 NXLun.exe 2->14         started        16 2 other processes 2->16 process3 dnsIp4 59 172.245.123.109, 49173, 80 AS-COLOCROSSINGUS United States 7->59 49 C:\Users\user\AppData\Local\...\vbc[1].exe, PE32 7->49 dropped 51 C:\Users\Public\vbc.exe, PE32 7->51 dropped 95 Office equation editor establishes network connection 7->95 97 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->97 18 vbc.exe 1 8 7->18         started        22 dyfYBBF.exe 2 12->22         started        99 Multi AV Scanner detection for dropped file 14->99 101 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->101 103 Machine Learning detection for dropped file 14->103 105 3 other signatures 14->105 24 powershell.exe 14->24         started        26 schtasks.exe 14->26         started        28 NXLun.exe 14->28         started        53 ~WRF{11A83BA6-A91D...B-C50921B0DB9A}.tmp, Composite 16->53 dropped file5 signatures6 process7 file8 45 C:\Users\user\AppData\Roaming\dyfYBBF.exe, PE32 18->45 dropped 47 C:\Users\user\AppData\Local\Temp\tmp619.tmp, XML 18->47 dropped 81 Multi AV Scanner detection for dropped file 18->81 83 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->83 85 Machine Learning detection for dropped file 18->85 87 Uses schtasks.exe or at.exe to add and modify task schedules 18->87 30 vbc.exe 13 4 18->30         started        35 powershell.exe 6 18->35         started        37 schtasks.exe 18->37         started        89 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 22->89 91 Adds a directory exclusion to Windows Defender 22->91 93 Injects a PE file into a foreign processes 22->93 39 dyfYBBF.exe 22->39         started        41 powershell.exe 22->41         started        43 schtasks.exe 22->43         started        signatures9 process10 dnsIp11 61 api.telegram.org 149.154.167.220, 443, 49174 TELEGRAMRU United Kingdom 30->61 55 C:\Users\user\AppData\Roaming\...55XLun.exe, PE32 30->55 dropped 57 C:\Windows\System32\drivers\etc\hosts, ASCII 30->57 dropped 63 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 30->63 65 Tries to steal Mail credentials (via file / registry access) 30->65 67 Tries to harvest and steal ftp login credentials 30->67 71 2 other signatures 30->71 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 39->69 file12 signatures13
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-03-23 14:59:09 UTC
File Type:
Document
Extracted files:
4
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=k2sdbfbnl64evb2tjw52uul4cgjvatbgo7r45oiatza5outrpbpq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230323-scrlfsad3s/
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
Adds Run key to start application
Executes dropped EXE
Loads dropped DLL
Uses the VBS compiler for execution
Blocklisted process makes network request
Downloads MZ/PE file
Drops file in Drivers directory
AgentTesla payload
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot1611551445:AAFDJ3yQMlB3zXJGib2_TFkq1jedBMj3GTw/sendDocument
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/56a430942d5f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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 56a430942d5fb84a87534dbbaa517c1193504c2677e3ceb9009e41d75271785f

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2582182/

Comments


Avatar
zbet commented on 2023-03-23 14:58:43 UTC

url : hxxp://172.245.123.109/85...............................85.......................doc