MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81c6f08763168a4ff6360b2a904896d96ac1ad8d5e164af52b7d43e0d5bc03dc. 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: 81c6f08763168a4ff6360b2a904896d96ac1ad8d5e164af52b7d43e0d5bc03dc
SHA3-384 hash: c1bf0ff9a4f762c804ce7f6a4f90c704e2cd2fa9eae41570944bf45cd2d76939c34f2cc1451b48c0b00fee05d02eaf8d
SHA1 hash: d57197cff1ef172ce640042a46937a2790cace37
MD5 hash: 663644ef10090b7b93ff5c5239e6a17e
humanhash: magnesium-lamp-london-fifteen
File name:SSE_SOA2021.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'289'234 bytes
First seen:2021-01-26 06:37:41 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 24576:sz1t7fKt0AbyjKYbo4W8HB6sF4tTHv++Vr4ElI3HtiAng4E75PLHYENb4WoYcLeP:h
TLSH 9555AFF876047DD6266F576BDA96ACED03B617638ACBA4CD80A47BC30563375EE02C04
Reporter abuse_ch
Tags:AgentTesla doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: cityjordan.xyz
Sending IP: 174.138.16.237
From: May Cheng- Wintop Logistics ltd <may.cheng@lubeworld.com.my>
Reply-To: sofiqn.spp@gmail.com
Subject: RE: RE: SOA Ex Pkg/MIP (Jan,2021)- SSE-2101027 victim-email
Attachment: SSE_SOA2021.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
133
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SSE_SOA2021.doc
Verdict:
Malicious activity
Analysis date:
2021-01-26 06:39:43 UTC
Tags:
trojan opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/c720c1a3-eaca-4cee-89f0-44ac8e6f88d3

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.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
Launching a file downloaded from the Internet
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:
Fake RTF File
Link:
https://app.docguard.net/81c6f08763168a4ff6360b2a904896d96ac1ad8d5e164af52b7d43e0d5bc03dc/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/590444
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Multi AV Scanner detection for domain / URL
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
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 344277 Sample: SSE_SOA2021.doc Startdate: 26/01/2021 Architecture: WINDOWS Score: 100 38 smtp.kkwoodd.com 2->38 40 us2.smtp.mailhostbox.com 2->40 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Multi AV Scanner detection for domain / URL 2->46 48 Found malware configuration 2->48 50 12 other signatures 2->50 8 EQNEDT32.EXE 11 2->8         started        13 tasksys.exe 2->13         started        15 tasksys.exe 2->15         started        17 2 other processes 2->17 signatures3 process4 dnsIp5 42 tunedinblog.com 150.95.81.183, 49167, 80 GMO-Z-COM-THGMO-ZcomNetDesignHoldingsCoLtdSG Singapore 8->42 32 C:\Users\user\AppData\...\topboyryx8932.exe, PE32 8->32 dropped 34 C:\Users\user\AppData\...\topboyz[1].exe, PE32 8->34 dropped 60 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->60 19 topboyryx8932.exe 8->19         started        62 Multi AV Scanner detection for dropped file 13->62 64 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 13->64 66 Machine Learning detection for dropped file 13->66 68 2 other signatures 13->68 22 tasksys.exe 2 13->22         started        24 tasksys.exe 13->24         started        26 tasksys.exe 13->26         started        file6 signatures7 process8 signatures9 52 Multi AV Scanner detection for dropped file 19->52 54 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->54 56 Machine Learning detection for dropped file 19->56 58 2 other signatures 19->58 28 topboyryx8932.exe 1 4 19->28         started        process10 file11 36 C:\Users\user\AppData\Roaming\...\tasksys.exe, PE32 28->36 dropped 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->70 signatures12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81c6f08763168a4ff6360b2a904896d96ac1ad8d5e164af52b7d43e0d5bc03dc/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-01-25 10:17:33 UTC
AV detection:
22 of 44 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhdpbb3dc2fe75rwbmvjasew3fvmdlmnlylev5jlpvb6bvn4apoa._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence ransomware
Link:
https://tria.ge/reports/210126-6eaqk16m7e/
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
Adds Run key to start application
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/81c6f08763168a4ff6360b2a904896d96ac1ad8d5e164af52b7d43e0d5bc03dc

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 81c6f08763168a4ff6360b2a904896d96ac1ad8d5e164af52b7d43e0d5bc03dc

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments