MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac7be59f994a2d6ba829e6a7db30ce60594cc2384c55d673e72ee1256737946a. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac7be59f994a2d6ba829e6a7db30ce60594cc2384c55d673e72ee1256737946a
SHA3-384 hash: 306a89f1744fb91a485bfdea6af7230926e6762ae1faec563966d73dd74f192d12c8e424004822e65d82e497a76b043e
SHA1 hash: 8c0f95383bd44240ccf222f1f46b61183cc13b37
MD5 hash: bcc3e09e95f64ba8a3e866d3a01a47a6
humanhash: east-maryland-georgia-oklahoma
File name:DOCX.doc.doc
Download: download sample
Signature AgentTesla
Create hunting rule
File size:218'159 bytes
First seen:2020-10-07 05:03:03 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 1536:9bPSTvHyjtHv9Yr9qm2o6+uwNRR+eLUSJ+31Cy6mAgaeeVhMDw5wfLu:9aWraRDAw5wf6
TLSH D32475B831974964E749C91A5168B56D0AF5F2E374C54CB123EFE430DFA4FE0AF88286
Reporter cocaman
Tags:AgentTesla doc


Avatar
cocaman
Malicious email (T1566.001)
From: "DA-Desk Mailing System<screening@da-desk.com >"
Received: "from da-desk.com (unknown [88.218.16.194]) "
Date: "07 Oct 2020 02:54:30 +0200"
Subject: "FRAUD ALART/RUSH TO DESK"
Attachment: "DOCX.doc.doc"

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
DNS request
Creating a process with a hidden window
Sending an HTTP GET request
Launching a file downloaded from the Internet
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/483635
Signature
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Binary contains a suspicious time stamp
Bypasses PowerShell execution policy
Connects to a pastebin service (likely for C&C)
Creates an undocumented autostart registry key
Creates autostart registry keys with suspicious names
Creates multiple autostart registry keys
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the startup folder
Found suspicious RTF objects
Hides threads from debuggers
Injects a PE file into a foreign processes
Injects files into Windows application
Machine Learning detection for dropped file
Microsoft Office creates scripting files
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Powershell drops PE file
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: Microsoft Office Product Spawning Windows Shell
Sigma detected: Powershell download and execute file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to download and execute files (via powershell)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 294252 Sample: DOCX.doc.doc Startdate: 07/10/2020 Architecture: WINDOWS Score: 100 71 pastebin.com 2->71 89 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->89 91 Antivirus detection for URL or domain 2->91 93 Antivirus detection for dropped file 2->93 95 18 other signatures 2->95 9 WINWORD.EXE 306 47 2->9         started        signatures3 process4 dnsIp5 73 altcbs.com 144.91.64.187, 49165, 49166, 80 CONTABODE Germany 9->73 53 C:\Users\user\AppData\Local\...\n[1].exe, PE32 9->53 dropped 55 C:\Users\user\AppData\Local\...\FLE89A.tmp, 370 9->55 dropped 57 C:\Users\user\AppData\...\Abctfhghgdghgh .scT, data 9->57 dropped 59 C:\Users\user\AppData\Local\...\95DA9213.png, 370 9->59 dropped 97 Document exploit detected (creates forbidden files) 9->97 99 Suspicious powershell command line found 9->99 101 Tries to download and execute files (via powershell) 9->101 103 2 other signatures 9->103 14 powershell.exe 12 7 9->14         started        19 powershell.exe 7 9->19         started        21 powershell.exe 7 9->21         started        23 3 other processes 9->23 file6 signatures7 process8 dnsIp9 79 altcbs.com 14->79 69 C:\Users\user\AppData\...\KYUKTSRre5.exe, PE32 14->69 dropped 81 Powershell drops PE file 14->81 25 KYUKTSRre5.exe 16 4 14->25         started        30 KYUKTSRre5.exe 19->30         started        32 KYUKTSRre5.exe 21->32         started        83 Injects files into Windows application 23->83 file10 signatures11 process12 dnsIp13 75 pastebin.com 104.23.98.190, 443, 49167, 49171 CLOUDFLARENETUS United States 25->75 61 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 25->61 dropped 105 Antivirus detection for dropped file 25->105 107 Multi AV Scanner detection for dropped file 25->107 109 Creates an undocumented autostart registry key 25->109 123 2 other signatures 25->123 34 timeout.exe 25->34         started        37 powershell.exe 25->37         started        39 powershell.exe 25->39         started        47 2 other processes 25->47 77 104.23.99.190, 443, 49168, 49169 CLOUDFLARENETUS United States 30->77 63 C:\Users\user\AppData\...\KYUKTSRre5.exe, PE32 30->63 dropped 65 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 30->65 dropped 111 Creates autostart registry keys with suspicious names 30->111 113 Creates multiple autostart registry keys 30->113 115 Writes to foreign memory regions 30->115 41 timeout.exe 30->41         started        43 powershell.exe 30->43         started        49 3 other processes 30->49 67 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 32->67 dropped 117 Adds a directory exclusion to Windows Defender 32->117 119 Hides threads from debuggers 32->119 121 Injects a PE file into a foreign processes 32->121 45 timeout.exe 32->45         started        51 2 other processes 32->51 file14 signatures15 process16 signatures17 85 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 34->85 87 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 34->87
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac7be59f994a2d6ba829e6a7db30ce60594cc2384c55d673e72ee1256737946a/
Threat name:
Script-VBS.Trojan.RTFObfustream
Create hunting rule
Status:
Malicious
First seen:
2020-10-06 08:19:22 UTC
File Type:
Document
Extracted files:
9
AV detection:
17 of 29 (58.62%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vr56lh4zjiwwxkbj42t5wmgombmuzqryjrk5m47hf3qskzzxsrva._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion trojan persistence spyware
Link:
https://tria.ge/reports/201007-z4kk7fflqa/
Behaviour
Delays execution with timeout.exe
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
Modifies registry class
NTFS ADS
Office loads VBA resources, possible macro or embedded object present
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Windows security modification
Drops startup file
Loads dropped DLL
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blacklisted process makes network request
Executes dropped EXE
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
Process spawned unexpected child process
Windows security bypass
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/ac7be59f994a2d6ba829e6a7db30ce60594cc2384c55d673e72ee1256737946a

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:Retefe
Create hunting rule
Author:bartblaze
Description:Retefe

File information

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

Malspam

AgentTesla

Word file doc ac7be59f994a2d6ba829e6a7db30ce60594cc2384c55d673e72ee1256737946a

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments