MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b4736cadf2ab0f4477b857257ec184758cd846ebae168b2ccc4af62e6871835. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b4736cadf2ab0f4477b857257ec184758cd846ebae168b2ccc4af62e6871835
SHA3-384 hash: 942b06f91854d43a63ea5df0086d520278fedb90b8a15ffc9a15ab1394b0dbd54b2478263e7938e2109b70acd295e4e1
SHA1 hash: 9ea7737b937666839fc2697fd105036ad22b6db9
MD5 hash: 7c2eddeb04db10bd3f18c209e44f8ee5
humanhash: idaho-dakota-zebra-michigan
File name:Order 21-21.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'939'229 bytes
First seen:2021-01-21 17:07:58 UTC
Last seen:2021-01-29 07:14:00 UTC
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:zLFZ/rtzGmw4WF4VEG6nhi3nu9hhy3xnmnj5vVkgWR6l943yZece5L/izWaD/BQI:zA
TLSH 1295AFB875047DE6267F576BDA96ACDC03A61B639ACBA4CC80A4B7C30563375FE02C05
Reporter abuse_ch
Tags:AgentTesla doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: gokyol.com.tr
Sending IP: 69.12.64.145
From: Kanin Nuttakan <basaran@gokyol.com.tr>
Subject: RE: About Order.
Attachment: Order 21-21.doc

Intelligence

File Origin
# of uploads :
4
# of downloads :
123
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Order 21-21.doc
Verdict:
Malicious activity
Analysis date:
2021-01-21 17:09:44 UTC
Tags:
trojan exploit CVE-2017-11882 opendir loader
Link:
https://app.any.run/tasks/f61016d9-5433-4fc6-abe5-5e4cbafbe270

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

MiscreantPunch.RTF.2017-0199.Obfus.170830.UNOFFICIAL
Create hunting rule

MiscreantPunch.RTF.2017-0199.Obfus.171711.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
Creating a file in the %AppData% directory
Adding an access-denied ACE
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Launching a file downloaded from the Internet
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Creating a process from a recently created file
Sending an HTTP GET request to an infection source
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/6b4736cadf2ab0f4477b857257ec184758cd846ebae168b2ccc4af62e6871835/results/dashboard
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/587491
Signature
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Drops PE files with a suspicious file extension
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
May check the online IP address of the machine
Multi AV Scanner 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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 342772 Sample: Order 21-21.doc Startdate: 21/01/2021 Architecture: WINDOWS Score: 100 50 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->50 52 Found malware configuration 2->52 54 Multi AV Scanner detection for dropped file 2->54 56 10 other signatures 2->56 7 EQNEDT32.EXE 9 2->7         started        12 WINWORD.EXE 336 20 2->12         started        14 EQNEDT32.EXE 2->14         started        process3 dnsIp4 40 tunedinblog.com 150.95.81.183, 49165, 80 GMO-Z-COM-THGMO-ZcomNetDesignHoldingsCoLtdSG Singapore 7->40 28 C:\Users\user\AppData\Roaming\kdoto8943.scr, PE32 7->28 dropped 30 C:\Users\user\AppData\Local\...\kdotx[1].scr, PE32 7->30 dropped 64 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->64 16 kdoto8943.scr 12 7->16         started        file5 signatures6 process7 dnsIp8 32 193.239.147.103, 49166, 80 DEDIPATH-LLCUS Brunei Darussalam 16->32 42 Multi AV Scanner detection for dropped file 16->42 44 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->44 46 Machine Learning detection for dropped file 16->46 48 3 other signatures 16->48 20 kdoto8943.scr 4 16->20         started        24 kdoto8943.scr 16->24         started        26 kdoto8943.scr 16->26         started        signatures9 process10 dnsIp11 34 mail.sardaplywood.com 67.225.218.11, 49167, 49169, 587 LIQUIDWEBUS United States 20->34 36 nagano-19599.herokussl.com 20->36 38 2 other IPs or domains 20->38 58 Tries to steal Mail credentials (via file access) 20->58 60 Tries to harvest and steal ftp login credentials 20->60 62 Tries to harvest and steal browser information (history, passwords, etc) 20->62 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b4736cadf2ab0f4477b857257ec184758cd846ebae168b2ccc4af62e6871835/
Threat name:
Document-RTF.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-01-21 17:08:08 UTC
AV detection:
20 of 46 (43.48%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nndtnsw7fkypir33qvzfp3ayi5mm3bdoxlqwrmwmysxwfzuhda2q._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210121-h2y5pe8x7s/
Behaviour
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
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Looks up external IP address via web service
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
Executes dropped EXE
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Exploit
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6b4736cadf2ab0f4477b857257ec184758cd846ebae168b2ccc4af62e6871835

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
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:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Malspam

AgentTesla

Word file doc 6b4736cadf2ab0f4477b857257ec184758cd846ebae168b2ccc4af62e6871835

(this sample)

  
Delivery method
Distributed via e-mail attachment

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