MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675. 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: 13


Maldoc score: 4


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675
SHA3-384 hash: 1aee330253d4f9aaf36311a962712f11bc60187516bc413231d465929be51abf2443caa14b29a08067970e289d85b33a
SHA1 hash: 0ae07c406163d69b009d6b4abc0b873e7e1b6935
MD5 hash: fa53c034331e06ba9cfa13a9fb86529e
humanhash: twelve-pizza-hamper-fillet
File name:Quotation.xls
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'213'440 bytes
First seen:2023-11-28 06:56:38 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 24576:ww6/UZymCfg8WCFKw6/eZykCfg8WCJQz99AUykBeDMDVkGL1+:r6/Gb/s6/IP/ZXfBqYkS+
TLSH T12945E0039808DB87C15E83F87E034DE81F4A6F19E5817EEF04667F8B3A75B62499A11D
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 xls

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 4
OLE dump

MalwareBazaar was able to identify 33 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
494 bytesMBD00388DAA/CompObj
562 bytesMBD00388DAA/Ole
620409 bytesMBD00388DAA/CONTENTS
794 bytesMBD00388DAB/CompObj
862 bytesMBD00388DAB/Ole
964830 bytesMBD00388DAB/CONTENTS
1093 bytesMBD00388DAC/CompObj
1164 bytesMBD00388DAC/Ole
12124841 bytesMBD00388DAC/CONTENTS
1399 bytesMBD00388DAD/CompObj
14187500 bytesMBD00388DAD/Package
1594 bytesMBD00388DAE/CompObj
1662 bytesMBD00388DAE/Ole
1764830 bytesMBD00388DAE/CONTENTS
1893 bytesMBD00388DAF/CompObj
1964 bytesMBD00388DAF/Ole
20124841 bytesMBD00388DAF/CONTENTS
2199 bytesMBD00388DB0/CompObj
22187472 bytesMBD00388DB0/Package
2320 bytesMBD00388DB1/Ole
241769 bytesMBD00388DB1/Ole10NAtIVE
25408497 bytesWorkbook
26529 bytes_VBA_PROJECT_CUR/PROJECT
27104 bytes_VBA_PROJECT_CUR/PROJECTwm
28977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
29977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
30977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
31985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
322644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
33553 bytes_VBA_PROJECT_CUR/VBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
344
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/460859/
Detection(s):
SecuriteInfo.com.Other.Malware-gen.19728.9505.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Heur.1282.16692.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Other.Malware-gen.25106.3990.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadMacro.BadOleNatEquat.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.EQAndMisCasedOleNativeWasTheCaseThatTheyGaveMe.20200215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Searching for synchronization primitives
Launching a process
Creating a file in the %AppData% directory
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:
Legacy Excel File with Macro
Link:
https://app.docguard.net/3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675/results/dashboard
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit exploit macros packed shellcode sload
Link:
https://www.filescan.io/uploads/65658f40bcca970107d03110/reports/5ad90382-1546-4e17-9def-266289ce44f2/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675
Label:
Benign
Suspicious Score:
1.9/10
Score Malicious:
2%
Score Benign:
8%
Link:
https://www.malware.ai/gui/files/?id=a812ce88-43c8-4301-adb1-480d749112c5
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1349075
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Excel sheet contains many unusual embedded objects
Found malware configuration
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 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)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
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 the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1349075 Sample: Quotation.xls Startdate: 28/11/2023 Architecture: WINDOWS Score: 100 46 Multi AV Scanner detection for domain / URL 2->46 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 15 other signatures 2->52 7 EQNEDT32.EXE 12 2->7         started        12 EQNEDT32.EXE 10 2->12         started        14 AcroRd32.exe 33 2->14         started        16 EXCEL.EXE 58 62 2->16         started        process3 dnsIp4 36 103.29.3.200, 49162, 80 NINENETWORKS-KHSATURNHOLDINGSLIMITEDKH unknown 7->36 32 C:\Users\user\AppData\Roaming\wlanext.exe, PE32 7->32 dropped 34 C:\Users\user\AppData\...\wininit[1].exe, PE32 7->34 dropped 64 Office equation editor establishes network connection 7->64 66 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->66 18 wlanext.exe 2 7->18         started        21 wlanext.exe 12->21         started        23 RdrCEF.exe 2 14->23         started        file5 signatures6 process7 dnsIp8 54 Multi AV Scanner detection for dropped file 18->54 56 Machine Learning detection for dropped file 18->56 58 Writes to foreign memory regions 18->58 26 CasPol.exe 12 4 18->26         started        60 Allocates memory in foreign processes 21->60 62 Injects a PE file into a foreign processes 21->62 30 CasPol.exe 21->30         started        38 192.168.2.255, 137, 138 unknown unknown 23->38 signatures9 process10 dnsIp11 40 api.telegram.org 26->40 42 api.telegram.org 149.154.167.220, 443, 49164, 49165 TELEGRAMRU United Kingdom 26->42 68 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->68 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 26->70 72 Tries to steal Mail credentials (via file / registry access) 26->72 44 api.telegram.org 30->44 74 Tries to harvest and steal browser information (history, passwords, etc) 30->74 signatures12 76 Uses the Telegram API (likely for C&C communication) 44->76
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-11-28 06:57:06 UTC
File Type:
Document
Extracted files:
118
AV detection:
12 of 23 (52.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ho6mtgkiyqn2elps75tlj5sf6emtdsssxud5pbmd3ojrafw2ez2q._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231128-hqx1aafh25/
Behaviour
Checks processor information in registry
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 FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Suspicious use of SetThreadContext
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot5168654140:AAE_I-CRa2apQXXWxhBTEaeIEr1Ln5pw69s/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3bbcc99948c4/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/3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675

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_OLE_EXPLOIT_CVE_2017_11882_1
Create hunting rule
Author:ditekSHen
Description:detects OLE documents potentially exploiting CVE-2017-11882
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:office_document_vba
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:Office document with embedded VBA
Reference:https://github.com/jipegit/

File information

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

Malspam

AgentTesla

Excel file xls 3bbcc99948c41ba22df2ff66b4f645f11931ca52bd07d78583db931016da2675

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/460859/

Comments