MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 75efc9135a9d12da0ef57bc4c4404612be56f69ecc432b44268d8ca953862619. 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: 6


Intelligence 6 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 75efc9135a9d12da0ef57bc4c4404612be56f69ecc432b44268d8ca953862619
SHA3-384 hash: df845d921251220405fb361d260bc50fa18d8b68adf27d35b7c5cbd3f5a3cc93d0c19b9d1a491aad360a76a4ea8ee242
SHA1 hash: a26855b879b376933a9f45344049ef163eec994a
MD5 hash: 26cede6d48c0424f0dbd8a5a160758ab
humanhash: freddie-mountain-hydrogen-indigo
File name:Detailed Document For RFQ-UNDP-BIOUCAN PRODUCT-03-11-2020.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:710'051 bytes
First seen:2020-11-03 14:31:46 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 12288:/U0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0GU0X:soooooooooooooooooooooooo7kj
TLSH 47E4C0F670666346C2526F15C952A80CA26BD210F3E951ACF34DF3BE43FE416EE1A970
Reporter cocaman
Tags:AgentTesla doc


Avatar
cocaman
Malicious email (T1566.001)
From: "steffi_cheng@bioucan.com"
Received: "from cloudmail.sysjo.com (cloudmail.sysjo.com [139.162.42.25]) "
Date: "Tue, 03 Nov 2020 12:50:12 +0100"
Subject: "RE:RE:REFERENCE: RFQ/UNDP/BIOUCAN PRODUCT/03/2020"
Attachment: "Detailed Document For RFQ-UNDP-BIOUCAN PRODUCT-03-11-2020.doc"

Intelligence

File Origin
# of uploads :
1
# of downloads :
83
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
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.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.EQPentaverateTheKernelWithHisWeeBeadyEyes.20200616.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a window
DNS request
Creating a file
Sending an HTTP GET request
Launching a file downloaded from the Internet
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a process from a recently created file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/519282
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Connects to a URL shortener service
Creates an autostart registry key pointing to binary in C:\Windows
Downloads files with wrong headers with respect to MIME Content-Type
Drops PE files to the user root directory
Injects a PE file into a foreign processes
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: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Suspicious Program Location Process Starts
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 308737 Sample: Detailed Document For RFQ-U... Startdate: 03/11/2020 Architecture: WINDOWS Score: 100 46 Antivirus / Scanner detection for submitted sample 2->46 48 Multi AV Scanner detection for dropped file 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 12 other signatures 2->52 8 EQNEDT32.EXE 13 2->8         started        13 WINWORD.EXE 291 26 2->13         started        15 pcalua.exe 1 2->15         started        process3 dnsIp4 42 bit.ly 67.199.248.11, 49165, 80 GOOGLE-PRIVATE-CLOUDUS United States 8->42 44 3.35.176.16, 49166, 80 AMAZON-02US United States 8->44 38 C:\Users\user\AppData\...\DE-0291[1].jpg, PE32 8->38 dropped 40 C:\Users\Public\908.exe, PE32 8->40 dropped 64 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->64 17 908.exe 5 8->17         started        file5 signatures6 process7 file8 32 C:\Users\user\dbhy.exe, PE32 17->32 dropped 34 C:\Users\user\AppData\...\InstallUtil.exe, PE32 17->34 dropped 54 Drops PE files to the user root directory 17->54 21 dbhy.exe 4 17->21         started        25 cmd.exe 17->25         started        signatures9 process10 file11 36 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 21->36 dropped 56 Writes to foreign memory regions 21->56 58 Allocates memory in foreign processes 21->58 60 Tries to detect virtualization through RDTSC time measurements 21->60 62 Injects a PE file into a foreign processes 21->62 27 InstallUtil.exe 2 21->27         started        30 reg.exe 1 25->30         started        signatures12 process13 signatures14 66 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 27->66 68 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 27->68 70 Creates an autostart registry key pointing to binary in C:\Windows 30->70
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/75efc9135a9d12da0ef57bc4c4404612be56f69ecc432b44268d8ca953862619/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2020-11-03 14:33:06 UTC
File Type:
Document
Extracted files:
15
AV detection:
13 of 48 (27.08%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=oxx4se22tujnudxvppcmiqcgck7fn5u6zrbswrbgrwgksu4geymq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/201103-afc2dh4ml2/
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
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Blacklisted 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:
Bloodhound
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/75efc9135a9d12da0ef57bc4c4404612be56f69ecc432b44268d8ca953862619

File information

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

Malspam

AgentTesla

Word file doc 75efc9135a9d12da0ef57bc4c4404612be56f69ecc432b44268d8ca953862619

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments