MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6810cc6edb1ced93f416b478d0d793b3a01bcfd37d8927388fd55ec2b1086e29. 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: 6810cc6edb1ced93f416b478d0d793b3a01bcfd37d8927388fd55ec2b1086e29
SHA3-384 hash: 2c0007fda7afe0959f4225862bb86d6712fa66a261791f059418b3b838dd54e394e72b07e778b3e67fb9ebacd4e98167
SHA1 hash: 79017f043d266043ce042fa654c89b8af9c163f4
MD5 hash: abb6916bdf5c4028fa49c614c200f180
humanhash: india-arkansas-four-east
File name:PO2100135.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:132'602 bytes
First seen:2021-01-20 06:37:10 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 3072:9pYUS1AlrScs9dbhAh3QMfndSEPd5Oubshnk/lfo+UWXCfZAfC+:9pYj1Aly9d9Ah3L/dSmd5RshnONXUWkm
TLSH 64D3AFBC75086DD2676F427BD6A6BDDC037527629ACB64CD40A8BBC30563365FF02809
Reporter abuse_ch
Tags:AgentTesla doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: esteam.com.sg
Sending IP: 37.49.225.143
From: Mary <mary@esteam.com.sg>
Subject: PO21/00135
Attachment: PO2100135.doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
174
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO2100135.doc
Verdict:
Malicious activity
Analysis date:
2021-01-20 06:44:31 UTC
Tags:
opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/0851474b-6eed-491c-b26c-bb5f3356638f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
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
Using the Windows Management Instrumentation requests
Sending an HTTP GET request
Launching a file downloaded from the Internet
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/6810cc6edb1ced93f416b478d0d793b3a01bcfd37d8927388fd55ec2b1086e29/results/dashboard
Result
Verdict:
MALICIOUS
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/585811
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Connects to a pastebin service (likely for C&C)
Contains functionality to inject code into remote processes
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Drops PE files to the startup folder
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses process hollowing technique
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell adding suspicious path to exclusion list
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 341939 Sample: PO2100135.doc Startdate: 20/01/2021 Architecture: WINDOWS Score: 100 62 Multi AV Scanner detection for dropped file 2->62 64 Sigma detected: Powershell adding suspicious path to exclusion list 2->64 66 Multi AV Scanner detection for submitted file 2->66 68 10 other signatures 2->68 7 EQNEDT32.EXE 11 2->7         started        12 poiuytrewasdfghjkl.exe 2->12         started        14 poiuytrewasdfghjkl.exe 2->14         started        16 4 other processes 2->16 process3 dnsIp4 54 cornelluniversityblog.com 94.23.169.237, 49165, 80 OVHFR France 7->54 46 C:\Users\user\...\poiuytrewasdfghjkl.exe, PE32 7->46 dropped 48 C:\Users\user\AppData\Local\...\admin[1].exe, PE32 7->48 dropped 82 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 7->82 18 poiuytrewasdfghjkl.exe 20 3 7->18         started        56 pastebin.com 12->56 84 Adds a directory exclusion to Windows Defender 12->84 86 Sample uses process hollowing technique 12->86 88 Hides threads from debuggers 12->88 23 powershell.exe 12->23         started        25 powershell.exe 12->25         started        58 104.23.99.190, 443, 49170, 49174 CLOUDFLARENETUS United States 14->58 60 pastebin.com 14->60 90 Injects a PE file into a foreign processes 14->90 27 powershell.exe 14->27         started        29 powershell.exe 14->29         started        31 powershell.exe 14->31         started        33 6 other processes 14->33 file5 signatures6 process7 dnsIp8 50 193.239.147.103, 49166, 49168, 49169 DEDIPATH-LLCUS Brunei Darussalam 18->50 52 pastebin.com 104.23.98.190, 443, 49167 CLOUDFLARENETUS United States 18->52 44 C:\Users\user\...\poiuytrewasdfghjkl.exe, PE32 18->44 dropped 74 Multi AV Scanner detection for dropped file 18->74 76 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 18->76 78 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->78 80 10 other signatures 18->80 35 powershell.exe 6 18->35         started        38 powershell.exe 7 18->38         started        40 powershell.exe 7 18->40         started        42 5 other processes 18->42 file9 signatures10 process11 signatures12 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 35->70 72 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 35->72
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6810cc6edb1ced93f416b478d0d793b3a01bcfd37d8927388fd55ec2b1086e29/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-01-20 04:27:35 UTC
AV detection:
23 of 45 (51.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=naimy3w3dtwzh5awwr4nbv4twoqbxt6tpwesooep2vpmfmiinyuq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210120-1f7grmbb22/
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
Drops file in System32 directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Maps connected drives based on registry
Checks BIOS information in registry
Drops startup file
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
Windows security modification
Blocklisted process makes network request
Executes dropped EXE
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
AgentTesla
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
Windows security bypass
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/6810cc6edb1ced93f416b478d0d793b3a01bcfd37d8927388fd55ec2b1086e29

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 6810cc6edb1ced93f416b478d0d793b3a01bcfd37d8927388fd55ec2b1086e29

(this sample)

  
Delivery method
Distributed via e-mail attachment

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