MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7d87a240aebb468e295dbb43f45ab8989f78567d5869fa6365f1d94c42a10dbe. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7d87a240aebb468e295dbb43f45ab8989f78567d5869fa6365f1d94c42a10dbe
SHA3-384 hash: 0f8cbebe8f0b2e0bd1055becb21a840b95e92391b53bb161acfa473ecafab1274762e4986550571e58bbdfe32cdfad02
SHA1 hash: 7113cecdff303bf2b54118febfe6561d9a895d5c
MD5 hash: 85501a66797907eca8e3eefb91e53d85
humanhash: sierra-alanine-indigo-fruit
File name:Tender Material for PUMPS, VALVES, STAINLESS STEEL AND GALVANIZED PIPES..doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:486'501 bytes
First seen:2021-01-20 06:36:24 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 12288:bTfYoRf7sG0zdPeeE8poHw9XaYzgokcy5C7q8ceyy2V377Kw:nwoRf7dsjEzwX3jkcyGqjev2Fz
TLSH 6AA4AFFC75047DE62A6F566BDA96ACDC03B52A638ACBA4CC806977C30573375FE02805
Reporter abuse_ch
Tags:AgentTesla CVE-2017-11882 doc


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: comitras.com
Sending IP: 193.239.147.142
From: Hannah Chenl <sabrina@comitras.com>
Reply-To: Email ADMIN <noreply@domain-admin.com>
Subject: Tender Material for PUMPS, VALVES AND PIPES for 3 Month- by 29/01/2021
Attachment: Tender Material for PUMPS, VALVES, STAINLESS STEEL AND GALVANIZED PIPES..doc

Intelligence

File Origin
# of uploads :
1
# of downloads :
151
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Tender Material for PUMPS, VALVES, STAINLESS STEEL AND GALVANIZED PIPES..doc
Verdict:
Malicious activity
Analysis date:
2021-01-20 06:43:01 UTC
Tags:
opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/b92cca0b-06a2-4d0e-bfb5-8730c1a78814

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
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/7d87a240aebb468e295dbb43f45ab8989f78567d5869fa6365f1d94c42a10dbe/results/dashboard
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/585882
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 dnsIp2 2 Behavior Graph ID: 341974 Sample: Tender Material for PUMPS, ... Startdate: 20/01/2021 Architecture: WINDOWS Score: 100 52 pastebin.com 2->52 66 Multi AV Scanner detection for dropped file 2->66 68 Sigma detected: Powershell adding suspicious path to exclusion list 2->68 70 Multi AV Scanner detection for submitted file 2->70 72 10 other signatures 2->72 8 EQNEDT32.EXE 11 2->8         started        13 sdfiruewyeigrsfjkchvbseoiauopwefadws.exe 2->13         started        15 sdfiruewyeigrsfjkchvbseoiauopwefadws.exe 2->15         started        17 3 other processes 2->17 signatures3 process4 dnsIp5 58 cornelluniversityblog.com 94.23.169.237, 49165, 80 OVHFR France 8->58 48 sdfiruewyeigrsfjkchvbseoiauopwefadws.exe, PE32 8->48 dropped 50 C:\Users\user\AppData\Local\...\iym[1].exe, PE32 8->50 dropped 82 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->82 19 sdfiruewyeigrsfjkchvbseoiauopwefadws.exe 20 3 8->19         started        60 104.23.99.190, 443, 49170 CLOUDFLARENETUS United States 13->60 62 pastebin.com 13->62 84 Adds a directory exclusion to Windows Defender 13->84 86 Sample uses process hollowing technique 13->86 88 Hides threads from debuggers 13->88 90 Injects a PE file into a foreign processes 13->90 24 powershell.exe 13->24         started        26 powershell.exe 13->26         started        28 powershell.exe 13->28         started        36 5 other processes 13->36 64 pastebin.com 15->64 30 powershell.exe 15->30         started        32 powershell.exe 15->32         started        34 powershell.exe 15->34         started        file6 signatures7 process8 dnsIp9 54 193.239.147.103, 49166, 49168, 49169 DEDIPATH-LLCUS Brunei Darussalam 19->54 56 pastebin.com 104.23.98.190, 443, 49167, 49174 CLOUDFLARENETUS United States 19->56 46 sdfiruewyeigrsfjkchvbseoiauopwefadws.exe, PE32 19->46 dropped 74 Multi AV Scanner detection for dropped file 19->74 76 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 19->76 78 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->78 80 10 other signatures 19->80 38 powershell.exe 6 19->38         started        40 powershell.exe 7 19->40         started        42 powershell.exe 7 19->42         started        44 5 other processes 19->44 file10 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7d87a240aebb468e295dbb43f45ab8989f78567d5869fa6365f1d94c42a10dbe/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-01-20 03:58:19 UTC
AV detection:
20 of 44 (45.45%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pwd2eqfoxndi4kk5xnb7iwvytcpxqvt5lbu7uy3f6hmuyqvbbw7a._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-sk6gf2wjsn/
Behaviour
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
Launches Equation Editor
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/7d87a240aebb468e295dbb43f45ab8989f78567d5869fa6365f1d94c42a10dbe

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 7d87a240aebb468e295dbb43f45ab8989f78567d5869fa6365f1d94c42a10dbe

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments