MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 10ad4414cfcf4191c1d1917f5eaa3ea7bcc4e7d15845dcc97c047a4bf8ee3f55. 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 4 File information Comments
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SHA256 hash: 10ad4414cfcf4191c1d1917f5eaa3ea7bcc4e7d15845dcc97c047a4bf8ee3f55
SHA3-384 hash: e629e8c7bc3a9f3b68d8c4f55940defe75bc3ae3d5ac14de284721518a1d4504ca8d9583559485270e2a3e39fbbf1654
SHA1 hash: 622cfce193c5cb6665d0e562d55a18324289bb7d
MD5 hash: 1f3aa316eb26f9523e03a8b5010a4119
humanhash: eleven-moon-fish-double
File name:2506719.xls
Download: download sample
Signature AgentTesla
Create hunting rule
File size:388'608 bytes
First seen:2020-08-31 07:23:42 UTC
Last seen:2020-08-31 07:33:48 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Ek3hOdsylKlgryzc4bNhZF+E+W2knu+AqmFkM9lz2KE8hBdLVoo5z9Nn/FDC5GVD:85kMHq/8oo5ztOcVLEP9iYtHligM9fGa
TLSH 048412A4B2D9CA43CA4B2375CCD243D9F622FC62A78387473798F62987323C44A57756
Reporter abuse_ch
Tags:AgentTesla xls


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: srv13.joy-travels.com
Sending IP: 103.35.120.165
From: Toko Kaiun Kaisha, Ltd <aralinahabi@gmail.com>
Subject: Official Purchase Order P.O. Material Requirements
Attachment: 2506719.xls

AgentTesla payload URL:
https://s3.rokket.space/t_6OuAvd.txt

AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
82
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Heur.Macro.Generic.f.4c08f8d6.31157.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request by exploiting the app vulnerability
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/454963
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with many randomly named variables
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: Suspicious Program Location Process Starts
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 279854 Sample: 2506719.xls Startdate: 31/08/2020 Architecture: WINDOWS Score: 100 43 Multi AV Scanner detection for dropped file 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 Document exploit detected (drops PE files) 2->47 49 14 other signatures 2->49 8 EXCEL.EXE 26 37 2->8         started        13 pcalua.exe 1 1 2->13         started        15 pcalua.exe 1 2->15         started        process3 dnsIp4 41 s3.rokket.space 46.4.97.19, 443, 49732 HETZNER-ASDE Germany 8->41 37 C:\Users\user\AppData\...\t_6OuAvd[1].txt, PE32 8->37 dropped 39 C:\Users\Public\igfxtsk.exe, PE32 8->39 dropped 65 Document exploit detected (creates forbidden files) 8->65 67 Document exploit detected (process start blacklist hit) 8->67 17 igfxtsk.exe 6 8->17         started        file5 signatures6 process7 file8 33 C:\Users\user\mghd.exe, PE32 17->33 dropped 35 C:\Users\user\AppData\...\InstallUtil.exe, PE32 17->35 dropped 51 Multi AV Scanner detection for dropped file 17->51 53 Machine Learning detection for dropped file 17->53 55 Drops PE files to the user root directory 17->55 21 mghd.exe 3 17->21         started        24 cmd.exe 1 17->24         started        signatures9 process10 signatures11 57 Multi AV Scanner detection for dropped file 21->57 59 Machine Learning detection for dropped file 21->59 61 Writes to foreign memory regions 21->61 63 2 other signatures 21->63 26 InstallUtil.exe 2 21->26         started        28 reg.exe 1 1 24->28         started        31 conhost.exe 24->31         started        process12 signatures13 69 Creates an autostart registry key pointing to binary in C:\Windows 28->69
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/10ad4414cfcf4191c1d1917f5eaa3ea7bcc4e7d15845dcc97c047a4bf8ee3f55/
Threat name:
Document-Excel.Downloader.Obfuser
Create hunting rule
Status:
Malicious
First seen:
2020-08-30 23:22:27 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ccwuifgpz5azdqorsf7v5kr6u66mjz6rlbc5zsl4ar5ex6hoh5kq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/200831-dzkepkkpm2/
Behaviour
Suspicious Office macro
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/10ad4414cfcf4191c1d1917f5eaa3ea7bcc4e7d15845dcc97c047a4bf8ee3f55

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

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

Malspam

AgentTesla

Excel file xls 10ad4414cfcf4191c1d1917f5eaa3ea7bcc4e7d15845dcc97c047a4bf8ee3f55

(this sample)

AgentTesla

Executable exe e639997f6ee7e96b1356622bc3f5449e8ce3aeb46100e775875cc41cc891d587

  
URLhaus
https://urlhaus.abuse.ch/url/447206/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 e639997f6ee7e96b1356622bc3f5449e8ce3aeb46100e775875cc41cc891d587
  
Dropping
MD5 35fe56c5cc7497630f6161c1f86d998a

Comments