MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227
SHA3-384 hash: baf51b4678684c665c6bfb3851714e3f2a9ca135f43d9883b0c2d510fca5c82dbff2d5577a0414b3120980a334dff602
SHA1 hash: f67de698fd8eb036b8e83211880d1c449fe6f7e2
MD5 hash: 4d6c7b93c085f50060e99dba63ef5e27
humanhash: november-seventeen-floor-cardinal
File name:SWIFT DETAILS-ERROR.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'035'830 bytes
First seen:2024-09-15 11:18:44 UTC
Last seen:Never
File type:Word file doc
MIME type:text/plain
ssdeep 6144:6wAYwA9WMyBtBWojqJnnR30lOGXdUz4+2:Bu
TLSH T1DF25112DA70F0519DF9196BB875A4E8945FCBB3AF28540A138AC533837EDC3E522257C
Magika rtf
Reporter NDA0E
Tags:AgentTesla cve-2017-0199 CVE-2017-11882 CVE-2018-0798 CVE-2018-0802 doc geo GRC SWIFT

Intelligence

File Origin
# of uploads :
1
# of downloads :
443
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
https://urlhaus.abuse.ch/url/3174644/
Verdict:
Malicious activity
Analysis date:
2024-09-15 16:12:57 UTC
Tags:
stealer metastealer
Link:
https://app.any.run/tasks/a7f3b198-f220-41f8-8185-57aae1014ad2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.27333.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-1.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26244.RtfHeur.UNOFFICIAL
Create hunting rule

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

MiscreantPunch.RTF.EvilRTF.CVE-2017-0199-Obfus.UNOFFICIAL
Create hunting rule

MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

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

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66e6c2a971e91b3281b9f58a
Tags:
Execution Exploit Generic Network Office Stealth Trojan
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
86%
Tags:
embedequation exploit shellcode
Link:
https://www.filescan.io/uploads/66e6c2a9bb9fe02b41b3ea94/reports/a4bca92b-02af-4001-95d9-aeaf84d150a4/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227
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/1511430
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Found malware configuration
Initial sample is an obfuscated RTF file
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 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)
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Suricata IDS alerts 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)
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1511430 Sample: SWIFT DETAILS-ERROR.doc Startdate: 15/09/2024 Architecture: WINDOWS Score: 100 39 Initial sample is an obfuscated RTF file 2->39 41 Suricata IDS alerts for network traffic 2->41 43 Found malware configuration 2->43 45 18 other signatures 2->45 8 WINWORD.EXE 291 21 2->8         started        process3 process4 10 EQNEDT32.EXE 11 8->10         started        15 EQNEDT32.EXE 8->15         started        dnsIp5 29 91.194.55.143, 49161, 80 AS209737TR Portugal 10->29 25 C:\Users\user\AppData\Roaming\plugfkg79.exe, PE32 10->25 dropped 27 C:\Users\user\...\msBXjHgLiqGMHCU[1].exe, PE32 10->27 dropped 57 Office equation editor establishes network connection 10->57 59 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 10->59 17 plugfkg79.exe 3 10->17         started        file6 signatures7 process8 signatures9 31 Multi AV Scanner detection for dropped file 17->31 33 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->33 35 Machine Learning detection for dropped file 17->35 37 2 other signatures 17->37 20 plugfkg79.exe 2 17->20         started        23 powershell.exe 4 17->23         started        process10 signatures11 47 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->47 49 Tries to steal Mail credentials (via file / registry access) 20->49 51 Tries to harvest and steal ftp login credentials 20->51 53 Tries to harvest and steal browser information (history, passwords, etc) 20->53 55 Installs new ROOT certificates 23->55
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-09-15 11:19:05 UTC
File Type:
Document
Extracted files:
3
AV detection:
16 of 38 (42.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jw2vwlpvqcb6oxeuohjlphq7t3pzjepuemytwtqskne75u2qoitq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla credential_access discovery execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240915-net25s1hrl/
Behaviour
Checks processor information in registry
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
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Reads WinSCP keys stored on the system
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
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
Credentials from Password Stores: Credentials from Web Browsers
AgentTesla
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/789ee33a-040e-4270-9b6c-25700af10b4a
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4db55b2df580/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/4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227

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
Rule name:SUSP_RTF_Header_Anomaly_RID2F7F
Create hunting rule
Author:Florian Roth
Description:Detects malformed RTF header often used to trick mechanisms that check for a full RTF header
Reference:https://twitter.com/ItsReallyNick/status/975705759618158593

File information

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

Malspam

AgentTesla

Word file doc 4db55b2df58083e75c9471d2b79e1f9edf9491f423313b4e125349fed3507227

(this sample)

AgentTesla

Executable exe f943f06dedcd8017ca95691364f90df38fb8e9e4620bb5a5fc9739d0b2797446

AgentTesla

Executable exe 8722d9be017fd945c9ace288f405051fd8ced8c141cadf680448d4e6cd5bf8ac

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 8722d9be017fd945c9ace288f405051fd8ced8c141cadf680448d4e6cd5bf8ac
  
Dropping
MD5 49a1b7551dcb6332880de16b36be8015

Comments