MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9. 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: 12


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9
SHA3-384 hash: 617e6a68e336cd909ade56de087a514c21844af0ef6985c44b6a8eb672738f203db85038cc8bee330a8e0f791c5fa803
SHA1 hash: 3909c5d1377710661e7498a35d3f6040a3ec2e80
MD5 hash: 9844983ad00e0986e2eff506cfc28f74
humanhash: missouri-november-summer-colorado
File name:quotation.xlsx
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'897'750 bytes
First seen:2024-01-23 17:33:44 UTC
Last seen:2024-01-23 17:37:59 UTC
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 49152:5+BBCR37XK3sLkl1SjYy1FVHj66d0vJoyw1omtB0:0BBCRVLWeYWD66qvJ9QoE0
TLSH T1289533439CFC5B42F1DEB4E2BA5C7F1694AF2AA521085BD0B1119AF3CC021B579E2CB5
TrID 60.1% (.XLSX) Excel Microsoft Office Open XML Format document (34000/1/7)
30.9% (.ZIP) Open Packaging Conventions container (17500/1/4)
7.0% (.ZIP) ZIP compressed archive (4000/1)
1.7% (.PG/BIN) PrintFox/Pagefox bitmap (640x800) (1000/1)
Reporter cocaman
Tags:AgentTesla CVE-2017-11882 QUOTATION xlsx


Avatar
cocaman
Malicious email (T1566.001)
From: "Sales Manager <sales@garment.com>" (likely spoofed)
Received: "from sfizy.it (sfizy.it [217.160.246.10]) "
Date: "Tue, 23 Jan 2024 13:30:01 +0100"
Subject: "Quotation"
Attachment: "quotation.xlsx"

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
A12157788 bytesOLe10NATive
A20 bytesB0XP2HN2vWBMxjuNfacc2VAPc1

Intelligence

File Origin
# of uploads :
2
# of downloads :
1'910
Origin country :
CH CH
Vendor Threat Intelligence
Verdict:
Legit
File type:
text/xml
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/472551/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
Searching for synchronization primitives
Launching a process
DNS request
Creating a file in the %AppData% directory
Creating a process with a hidden window
Sending an HTTP GET request
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Link:
https://app.docguard.net/51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
89%
Tags:
anti-vm embedequation exploit shellcode
Link:
https://www.filescan.io/uploads/65aff88ef3cf17c17b76efc6/reports/ffa5df1c-4549-4179-808d-5d425d5fe038/overview
Verdict:
Malicious
Labled as:
CVE-2017-11882
Link:
https://www.hybrid-analysis.com/sample/51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9
Label:
Malicious
Suspicious Score:
9.8/10
Score Malicious:
99%
Score Benign:
1%
Link:
https://www.malware.ai/gui/files/?id=c0b00d7c-6650-41f2-a719-f4c99813c93c
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1379749
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Contains functionality to log keystrokes (.Net Source)
Document exploit detected (process start blacklist hit)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Powershell uses Background Intelligent Transfer Service (BITS)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1379749 Sample: quotation.xlsx Startdate: 23/01/2024 Architecture: WINDOWS Score: 100 60 Snort IDS alert for network traffic 2->60 62 Found malware configuration 2->62 64 Malicious sample detected (through community Yara rule) 2->64 66 17 other signatures 2->66 8 EXCEL.EXE 53 12 2->8         started        10 taskeng.exe 1 2->10         started        process3 process4 12 EQNEDT32.EXE 11 8->12         started        17 VUdwjF.exe 4 10->17         started        dnsIp5 52 aineommall.com 204.11.59.228, 49160, 80 PUBLIC-DOMAIN-REGISTRYUS United States 12->52 42 C:\Users\user\AppData\Roaming\word.exe, PE32 12->42 dropped 44 C:\Users\user\AppData\Local\...\dd[1].exe, PE32 12->44 dropped 86 Office equation editor establishes network connection 12->86 88 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 12->88 19 word.exe 1 10 12->19         started        90 Multi AV Scanner detection for dropped file 17->90 92 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->92 94 Machine Learning detection for dropped file 17->94 96 2 other signatures 17->96 23 VUdwjF.exe 17->23         started        26 powershell.exe 17->26         started        28 schtasks.exe 17->28         started        file6 signatures7 process8 dnsIp9 38 C:\Users\user\AppData\Roaming\VUdwjF.exe, PE32 19->38 dropped 40 C:\Users\user\AppData\Local\...\tmp6E1E.tmp, XML 19->40 dropped 68 Multi AV Scanner detection for dropped file 19->68 70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 19->70 72 Machine Learning detection for dropped file 19->72 84 3 other signatures 19->84 30 word.exe 12 2 19->30         started        34 powershell.exe 4 19->34         started        36 schtasks.exe 19->36         started        46 173.231.16.75, 443, 49163 WEBNXUS United States 23->46 48 api4.ipify.org 23->48 50 api.ipify.org 23->50 74 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 23->74 76 Tries to steal Mail credentials (via file / registry access) 23->76 78 Tries to harvest and steal browser information (history, passwords, etc) 23->78 80 Installs a global keyboard hook 23->80 82 Powershell uses Background Intelligent Transfer Service (BITS) 26->82 file10 signatures11 process12 dnsIp13 54 64.185.227.156, 443, 49162 WEBNXUS United States 30->54 56 api4.ipify.org 30->56 58 api.ipify.org 30->58 98 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 30->98 100 Installs new ROOT certificates 30->100 102 Tries to steal Mail credentials (via file / registry access) 30->102 104 Installs a global keyboard hook 30->104 106 Powershell uses Background Intelligent Transfer Service (BITS) 34->106 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-01-23 10:19:57 UTC
File Type:
Document
Extracted files:
16
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=khyau3aje5waxg5nvh4y2nfj5ey4c5s7n3mimpzbhxcudnrcz7uq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240123-v5ehpsebc9/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
Drops file in System32 directory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Executes dropped EXE
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
Blocklisted process makes network request
Downloads MZ/PE file
AgentTesla
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/51f00a6c0927/report/overview.html
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/51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9

File information

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

Malspam

AgentTesla

Excel file xlsx 51f00a6c09276c0b9bada9f98d34a9e931c1765f6ed8863f213dc541b622cfe9

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/472551/

Comments