MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2c4f7516214ad84b31d2468ff496720193ea743bdb260287e2ef9ec48014b493. 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 7 File information Comments
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SHA256 hash: 2c4f7516214ad84b31d2468ff496720193ea743bdb260287e2ef9ec48014b493
SHA3-384 hash: 54b4915c427ae3abcd766df1569cd713c1379a704584c46bb03c62800915fd3e70e89651348cb165863ee16cefc9b365
SHA1 hash: 03edc5f6bcfcfb2e451570406cf67ee3850ff3ec
MD5 hash: d912c5b430e1c0a1611b619179269635
humanhash: wisconsin-eight-foxtrot-two
File name:Avicorp_RFQ.xls
Download: download sample
Signature AgentTesla
Create hunting rule
File size:68'096 bytes
First seen:2020-10-17 07:21:28 UTC
Last seen:2020-10-17 08:04:01 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:HknSGiysRchNXHfA1MiWhZFGkEld+Dr7WmmSb4wIE7zp0RhBv1hQz7rT015:HknSGiysRchNXHfA1MiWhZFGkEld+DrK
TLSH C2639D8277A5D845DA5A073345A757196623FC228BF7D70F6208F31A1FB3E809B039A7
Reporter abuse_ch
Tags:AgentTesla xls


Avatar
abuse_ch
AgentTesla payload URL:
https://cdn.discordapp.com/attachments/724354458917666887/766750321262985266/vj.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
134
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Exploit.Siggen2.51029.16799.12786.UNOFFICIAL
Create hunting rule

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
Launching cmd.exe command interpreter by exploiting the app vulnerability
Result
Threat name:
Hidden Macro 4.0 AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/494341
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Document exploit detected (process start blacklist hit)
Drops PE files to the document folder of the user
Found Excel 4.0 Macro with suspicious formulas
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
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
Sigma detected: MSBuild connects to smtp port
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 299621 Sample: Avicorp_RFQ.xls Startdate: 17/10/2020 Architecture: WINDOWS Score: 100 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 10 other signatures 2->57 9 EXCEL.EXE 85 27 2->9         started        process3 signatures4 63 Obfuscated command line found 9->63 65 Document exploit detected (process start blacklist hit) 9->65 12 cmd.exe 9->12         started        14 cmd.exe 9->14         started        17 cmd.exe 9->17         started        process5 signatures6 19 powershell.exe 7 12->19         started        75 Obfuscated command line found 14->75 21 powershell.exe 16 9 14->21         started        26 powershell.exe 7 17->26         started        process7 dnsIp8 28 vj.exe 19->28         started        37 cutt.ly 104.22.1.232, 443, 49167 CLOUDFLARENETUS United States 21->37 39 cdn.discordapp.com 162.159.130.233, 443, 49169 CLOUDFLARENETUS United States 21->39 35 C:\Users\user\Documents\vj.exe, PE32 21->35 dropped 59 Drops PE files to the document folder of the user 21->59 61 Powershell drops PE file 21->61 file9 signatures10 process11 signatures12 67 Writes to foreign memory regions 28->67 69 Allocates memory in foreign processes 28->69 71 Injects a PE file into a foreign processes 28->71 73 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 28->73 31 MSBuild.exe 4 28->31         started        process13 dnsIp14 41 avicorrpinc.com 185.174.174.220, 49170, 587 ITLDC-NLUA Ukraine 31->41 43 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 31->43 45 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 31->45 47 Tries to steal Mail credentials (via file access) 31->47 49 4 other signatures 31->49 signatures15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2c4f7516214ad84b31d2468ff496720193ea743bdb260287e2ef9ec48014b493/
Threat name:
Document-Word.Downloader.EncDoc
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Status:
Malicious
First seen:
2020-10-17 06:30:03 UTC
AV detection:
14 of 29 (48.28%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=frhxkfrbjlmewmosi2h7jftsagj6u5b33mtafb7c56pmjaauwsjq._file
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Link:
https://tria.ge/reports/201017-1n9bgasj1x/
Behaviour
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
Suspicious use of SetThreadContext
Blacklisted process makes network request
Executes dropped EXE
Process spawned unexpected child process
Malware Config
Dropper Extraction:
https://cutt.ly/mggM8iA
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/2c4f7516214ad84b31d2468ff496720193ea743bdb260287e2ef9ec48014b493

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:SUSP_Excel4Macro_AutoOpen
Create hunting rule
Author:John Lambert @JohnLaTwC
Description:Detects Excel4 macro use with auto open / close
Rule name:SUSP_PowerShell_Caret_Obfuscation_2
Create hunting rule
Author:Florian Roth
Description:Detects powershell keyword obfuscated with carets
Reference:Internal Research
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Malspam

AgentTesla

Excel file xls 2c4f7516214ad84b31d2468ff496720193ea743bdb260287e2ef9ec48014b493

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/706313/
  
Delivery method
Distributed via e-mail attachment

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