MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d3345db33851543b968f728d2a342c49dc72b0dc633da851518d8585e53af3ce. 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: 7


Intelligence 7 IOCs YARA 2 File information Comments
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SHA256 hash: d3345db33851543b968f728d2a342c49dc72b0dc633da851518d8585e53af3ce
SHA3-384 hash: 8396f3463f7dfe5acc24870ceb887548b9c128a93856db4ea389e155f4e39673ce948ad32ca74e8df1505ef9635923d4
SHA1 hash: 22df9b7496903bdb3f8325c2c95aadff01773672
MD5 hash: 9e227b07643afd3444c4d30f0c47c3cf
humanhash: avocado-nitrogen-ink-emma
File name:9e227b07643afd3444c4d30f0c47c3cf.xls
Download: download sample
Signature AgentTesla
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File size:57'856 bytes
First seen:2020-09-28 02:24:29 UTC
Last seen:2020-09-28 02:34:02 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:1XnSGiysRchNXHfA1MiWhZFGkEld+Dr7OnkdyYWptOr5TwjJ1t:1XnSGiysRchNXHfA1MiWhZFGkEld+DrS
TLSH 82437DD77289AC44DB59073606A703496623FC268B73C60B7356F3671F739A0AD03A6B
Reporter theDark3d
Tags:AgentTesla Loader malware xls

Intelligence

File Origin
# of uploads :
2
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
TwinWave.EvilDoc.Excel4Macro.HiddenSheetDLWAKEUP.20200310.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
DNS request
Sending a custom TCP request
Running batch commands by exploiting the app vulnerability
Downloading the file
Result
Threat name:
Hidden Macro 4.0 AgentTesla
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Detection:
malicious
Classification:
troj.adwa.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/476148
Signature
.NET source code contains very large array initializations
Binary contains a suspicious time stamp
Connects to a URL shortener service
Contains functionality to hide a thread from the debugger
Creates an undocumented autostart registry key
Document exploit detected (process start blacklist hit)
Drops PE files to the startup folder
Found Excel 4.0 Macro with suspicious formulas
Hides threads from debuggers
Injects a PE file into a foreign processes
Installs a global keyboard hook
Obfuscated command line found
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
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
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
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behaviorgraph top1 signatures2 2 Behavior Graph ID: 290524 Sample: zGT7NWeYPr.xls Startdate: 28/09/2020 Architecture: WINDOWS Score: 100 70 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->70 72 Yara detected AgentTesla 2->72 74 .NET source code contains very large array initializations 2->74 76 10 other signatures 2->76 9 EXCEL.EXE 86 29 2->9         started        12 re.exe 2->12         started        15 re.exe 2->15         started        17 re.exe 2->17         started        process3 dnsIp4 86 Obfuscated command line found 9->86 88 Document exploit detected (process start blacklist hit) 9->88 19 cmd.exe 9->19         started        21 cmd.exe 9->21         started        62 paste.nrecom.net 12->62 64 server5.nrecom.net 12->64 90 Hides threads from debuggers 12->90 92 Injects a PE file into a foreign processes 12->92 24 re.exe 12->24         started        26 timeout.exe 12->26         started        66 paste.nrecom.net 15->66 68 server5.nrecom.net 15->68 28 timeout.exe 15->28         started        30 re.exe 15->30         started        32 timeout.exe 17->32         started        signatures5 process6 signatures7 34 powershell.exe 7 19->34         started        78 Suspicious powershell command line found 21->78 80 Tries to download and execute files (via powershell) 21->80 36 powershell.exe 16 11 21->36         started        82 Installs a global keyboard hook 24->82 process8 dnsIp9 41 re.exe 14 1 34->41         started        54 schuelerrat.handrup.de 92.51.166.180, 443, 49166 GD-EMEA-DC-SXB1DE Germany 36->54 56 tinyurl.com 172.67.1.225, 443, 49165 CLOUDFLARENETUS United States 36->56 50 C:\Users\user\AppData\Roaming\re.exe, PE32 36->50 dropped 84 Powershell drops PE file 36->84 file10 signatures11 process12 dnsIp13 58 paste.nrecom.net 41->58 60 server5.nrecom.net 37.120.174.218, 443, 49169, 49170 NETCUP-ASnetcupGmbHDE Germany 41->60 52 C:\Users\user\AppData\Roaming\...\re.exe, PE32 41->52 dropped 94 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 41->94 96 Creates an undocumented autostart registry key 41->96 98 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 41->98 100 4 other signatures 41->100 46 re.exe 2 41->46         started        48 timeout.exe 41->48         started        file14 signatures15 process16
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d3345db33851543b968f728d2a342c49dc72b0dc633da851518d8585e53af3ce/
Threat name:
Document-Word.Downloader.Obfuser
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Status:
Malicious
First seen:
2020-09-28 02:13:12 UTC
File Type:
Document
Extracted files:
8
AV detection:
17 of 47 (36.17%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=2m2f3mzykfkdxfupokgsunbmjhohfmg4mm62qukrrwcylzj26pha._file
Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
spyware keylogger trojan stealer family:agenttesla persistence
Link:
https://tria.ge/reports/200928-zecch9j91x/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Program crash
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Drops startup file
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Blacklisted process makes network request
Executes dropped EXE
AgentTesla
Modifies WinLogon for persistence
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://tinyurl.com/y3psaqmm
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Dropper
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/d3345db33851543b968f728d2a342c49dc72b0dc633da851518d8585e53af3ce

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:SharedStrings
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Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:SUSP_Excel4Macro_AutoOpen
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Author:John Lambert @JohnLaTwC
Description:Detects Excel4 macro use with auto open / close

File information

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

Comments