MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cec8ba389a443ab1736b2ae402abde117845cf9a4548fcd0882ecfd75d4aa2b7. 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: 10


Intelligence 10 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cec8ba389a443ab1736b2ae402abde117845cf9a4548fcd0882ecfd75d4aa2b7
SHA3-384 hash: cee925c3eff0d95ab231fd3df43b76b81682bf9f48253f93807446d541201d423fa2e565f5d039f1b5f2f72b9f39d9a9
SHA1 hash: baab597d38a05fbe18bf05959a8ff93d0ecf03d8
MD5 hash: 8c9963b5e261c52e7f2bd611d5e7e8bc
humanhash: speaker-pizza-floor-romeo
File name:BROCHURES.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:724'912 bytes
First seen:2021-02-09 10:04:25 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 12288:jlZT6R23ZSy55CEIDjbC1JFtaCI/Jkc1mdWdlZrlP16wcSkAGYeuVl0vOBG:jrGc3QyaElNwJkcEW3NN1ZVeuVle
TLSH F0F4AFF87A047DD6267F576BDA96ACDC13A627639ACBA4CC806477C305A3325FE02C05
Reporter abuse_ch
Tags:AgentTesla doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: kabeltec.com.sg
Sending IP: 37.49.225.202
From: Tan Shi Ying -Sales Engineer <shiying.tan@kabeltec.com.sg>
Subject: Attention: ( Purchasing Dept) -INTRODUCTION ON ELECTRICAL CABLE from KABELTEC ASIA PACIFIC PTE LTD
Attachment: BROCHURES.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
112
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BROCHURES.doc
Verdict:
Malicious activity
Analysis date:
2021-02-09 10:06:17 UTC
Tags:
opendir exploit CVE-2017-11882
Link:
https://app.any.run/tasks/03d6e368-70da-42b4-a321-4229852a32e1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.27301.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-2.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXSTRGOOD.RTFSTR._EQUATION.200422.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a window
DNS request
Sending an HTTP GET request
Sending a custom TCP request by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/cec8ba389a443ab1736b2ae402abde117845cf9a4548fcd0882ecfd75d4aa2b7/results/dashboard
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/602770
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
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: Droppers Exploiting CVE-2017-11882
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 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 ftp login credentials
Tries to steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 350411 Sample: BROCHURES.doc Startdate: 09/02/2021 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Sigma detected: Scheduled temp file as task from temp location 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 12 other signatures 2->52 7 EQNEDT32.EXE 14 2->7         started        12 WINWORD.EXE 336 20 2->12         started        14 EQNEDT32.EXE 2->14         started        process3 dnsIp4 36 idolz.pw 162.0.215.237, 443, 49167, 49168 ACPCA Canada 7->36 30 C:\Users\user\...\lsdiojhfnsdlkjhdsfds.exe, PE32 7->30 dropped 32 C:\Users\user\...\vYLvynaFiNv9Tjy[1].exe, PE32 7->32 dropped 60 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->60 16 lsdiojhfnsdlkjhdsfds.exe 3 7->16         started        file5 signatures6 process7 file8 26 C:\Users\user\AppData\...\KnVoxSoCRosgkd.exe, PE32 16->26 dropped 28 C:\Users\user\AppData\Local\...\tmpAD11.tmp, XML 16->28 dropped 38 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->38 40 Machine Learning detection for dropped file 16->40 42 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->42 44 Injects a PE file into a foreign processes 16->44 20 lsdiojhfnsdlkjhdsfds.exe 2 16->20         started        24 schtasks.exe 16->24         started        signatures9 process10 dnsIp11 34 mail.privateemail.com 198.54.122.60, 49170, 49171, 49172 NAMECHEAP-NETUS United States 20->34 54 Tries to steal Mail credentials (via file access) 20->54 56 Tries to harvest and steal ftp login credentials 20->56 58 Tries to harvest and steal browser information (history, passwords, etc) 20->58 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cec8ba389a443ab1736b2ae402abde117845cf9a4548fcd0882ecfd75d4aa2b7/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-02-09 10:05:08 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z3eluoe2iq5lc43lflsafk66cf4elt42ivepzueif3h5oxkkuk3q._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
ransomware
Link:
https://tria.ge/reports/210209-rj6f9yclp6/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
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
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/cec8ba389a443ab1736b2ae402abde117845cf9a4548fcd0882ecfd75d4aa2b7

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.

File information

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

Malspam

AgentTesla

Word file doc cec8ba389a443ab1736b2ae402abde117845cf9a4548fcd0882ecfd75d4aa2b7

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments