MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc
SHA3-384 hash: eb8cf957f4be96c6277b1884b1c16d65036be477c6424ac26b9c0a1d30483380459f62f32e90894b1b93439397d814f6
SHA1 hash: a449c588b8834497cacd224913bb07a34a73750f
MD5 hash: 03411a416f1beedefcd5df4ae5285091
humanhash: purple-pluto-juliet-eight
File name:SecuriteInfo.com.Exploit.CVE-2018-0798.4.29727.25708
Download: download sample
Signature AgentTesla
Create hunting rule
File size:108'094 bytes
First seen:2024-01-25 08:25:15 UTC
Last seen:2024-01-25 11:51:22 UTC
File type:Rich Text Format (RTF) rtf
MIME type:text/rtf
ssdeep 1536:vwAlRkwAlRkwAlRYCU45noGn3926HInY+U:vwAlawAlawAlCCx5oGn3MCInY+U
TLSH T19FB3266DD34B02698F6253779B571E5441BDBA6EF38412B1306C433933EAC3DA2252BE
Reporter SecuriteInfoCom
Tags:AgentTesla CVE-2017-11882 rtf

Intelligence

File Origin
# of uploads :
2
# of downloads :
132
Origin country :
FR FR
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/rtf
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Exploit.CVE-2018-0798.4.29727.25708.UNOFFICIAL
Create hunting rule

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

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
DNS request
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a file
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Sending a custom TCP request 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/43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/65b21b211dcf0cd5447246ae/reports/1d218590-67e0-4102-be7e-be89a3a9ff72/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc
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/1380932
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
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 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: File Dropped By EQNEDT32EXE
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1380932 Sample: SecuriteInfo.com.Exploit.CV... Startdate: 25/01/2024 Architecture: WINDOWS Score: 100 61 Found malware configuration 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for dropped file 2->65 67 14 other signatures 2->67 8 WINWORD.EXE 291 15 2->8         started        11 KaGeys.exe 2 2->11         started        14 KaGeys.exe 2 2->14         started        process3 file4 37 ~WRF{BAA686FC-F7D9...0-BFCD4E696E51}.tmp, Composite 8->37 dropped 16 EQNEDT32.EXE 11 8->16         started        89 Antivirus detection for dropped file 11->89 91 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 11->91 93 Machine Learning detection for dropped file 11->93 21 KaGeys.exe 12 2 11->21         started        95 Injects a PE file into a foreign processes 14->95 23 KaGeys.exe 14->23         started        signatures5 process6 dnsIp7 41 amassmodel.top 104.21.21.189, 443, 49162 CLOUDFLARENETUS United States 16->41 33 C:\Users\user\AppData\Roaming\agod29934.exe, PE32 16->33 dropped 35 C:\Users\user\AppData\Local\...\agodzx[1].exe, PE32 16->35 dropped 69 Installs new ROOT certificates 16->69 71 Office equation editor establishes network connection 16->71 73 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 16->73 25 agod29934.exe 2 16->25         started        43 mail.processengrg.com 21->43 45 173.231.16.75, 443, 49172 WEBNXUS United States 21->45 53 4 other IPs or domains 21->53 47 mail.processengrg.com 23->47 49 processengrg.com 23->49 51 ip-api.com 23->51 75 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 23->75 77 Tries to steal Mail credentials (via file / registry access) 23->77 79 Tries to harvest and steal browser information (history, passwords, etc) 23->79 file8 signatures9 process10 signatures11 81 Antivirus detection for dropped file 25->81 83 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 25->83 85 Machine Learning detection for dropped file 25->85 87 3 other signatures 25->87 28 agod29934.exe 13 8 25->28         started        process12 dnsIp13 55 mail.processengrg.com 28->55 57 api4.ipify.org 64.185.227.156, 443, 49164 WEBNXUS United States 28->57 59 3 other IPs or domains 28->59 39 C:\Users\user\AppData\Roaming\...\KaGeys.exe, PE32 28->39 dropped 97 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 28->97 99 Installs new ROOT certificates 28->99 101 Tries to steal Mail credentials (via file / registry access) 28->101 103 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->103 file14 signatures15
Score:
77%
Verdict:
Malware
File Type:
ASCII
Link:
https://malprob.io/report/43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-01-25 08:26:08 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=ipupk2xbc7b3kiwukcunssn6sfebhdspgs357ktvopbdgyhp766a._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240125-kbvygsbhf6/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Modifies system certificate store
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
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/43e8f56ae117c3b522d450a8d949be9148138e4f34b7dfaa7573c23360efffbc

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.

Comments