MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a41e9786e52fb3009f9c3322bca19e600a7f46689f36893a0564e382555fe4c6. 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: 10


Maldoc score: 7


Intelligence 10 IOCs YARA 8 File information Comments

SHA256 hash: a41e9786e52fb3009f9c3322bca19e600a7f46689f36893a0564e382555fe4c6
SHA3-384 hash: 8e015e04de3fb1645d19f441ab38d51f5b0eafe5c3fddba7f395075de70ef6025f9e3b15e0128c98c4d5d532e7d209a4
SHA1 hash: f1f13bb2a3b50d986b2a9eefb5247091b3a3209d
MD5 hash: 0808e9511d3c41e7a31151880cc6a548
humanhash: spring-washington-failed-cola
File name:paymentconfirmation.xlsm
Download: download sample
Signature AgentTesla
File size:147'861 bytes
First seen:2021-01-09 13:30:46 UTC
Last seen:2021-01-09 15:44:33 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 3072:zn56Kd9tGQBdVsJxBGH/7CftPT7yCBmXog:b5HtGeOxBGHwlT7Dg
TLSH 55E39D839C069B83E45C93F97E074E980F2A475DE692BAEF55260F8B3B503674D8D02C
Reporter abuse_ch
Tags:AgentTesla xlsm


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: soiltech.in
Sending IP: 62.113.215.224
From: Account<subodh@soiltech.in>
Subject: INVOICE FOR PAYMENT!
Attachment: paymentconfirmation.xlsm

AgentTesla payload URL:
http://payment.unior.club/paymentconfirmation.exe

AgentTesla SMTP exfil server:
abpurchase.info:587

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 id
Maldoc score: 7
OLE dump

MalwareBazaar was able to identify 13 sections in this file using oledump:

Section IDSection sizeSection name
A1422 bytesPROJECT
A262 bytesPROJECTwm
A31180 bytesVBA/Sheet1
A43845 bytesVBA/ThisWorkbook
A52879 bytesVBA/_VBA_PROJECT
A61863 bytesVBA/__SRP_0
A7451 bytesVBA/__SRP_1
A8432 bytesVBA/__SRP_2
A9106 bytesVBA/__SRP_3
A10865 bytesVBA/__SRP_4
A11318 bytesVBA/__SRP_5
A12515 bytesVBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
SuspiciousShellMay run an executable file or a system command
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
2
# of downloads :
308
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
paymentconfirmation.xlsm
Verdict:
Malicious activity
Analysis date:
2021-01-09 13:31:34 UTC
Tags:
macros macros-on-open

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Creating a process from a recently created file
Running batch commands by exploiting the app vulnerability
Launching a file downloaded from the Internet
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Document image
Document image
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro Execution Coercion
Detected a document that appears to social engineer the user into activating embedded logic.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (process start blacklist hit)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
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)
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
Sigma detected: Powershell download file and shellexecute
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)
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:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 337699 Sample: paymentconfirmation.xlsm Startdate: 09/01/2021 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->42 44 12 other signatures 2->44 9 EXCEL.EXE 57 14 2->9         started        process3 file4 32 C:\Users\user\...\~$paymentconfirmation.xlsm, data 9->32 dropped 68 Document exploit detected (process start blacklist hit) 9->68 13 cmd.exe 9->13         started        signatures5 process6 signatures7 70 Suspicious powershell command line found 13->70 72 Tries to download and execute files (via powershell) 13->72 16 powershell.exe 12 7 13->16         started        process8 dnsIp9 34 payment.unior.club 104.219.248.111, 49167, 80 NAMECHEAP-NETUS United States 16->34 30 C:\Users\user\AppData\Roaming\tZJHa.exe, PE32 16->30 dropped 46 Powershell drops PE file 16->46 21 tZJHa.exe 16->21         started        file10 signatures11 process12 signatures13 48 Multi AV Scanner detection for dropped file 21->48 50 Machine Learning detection for dropped file 21->50 52 Writes to foreign memory regions 21->52 54 2 other signatures 21->54 24 MSBuild.exe 12 21->24         started        28 MSBuild.exe 21->28         started        process14 dnsIp15 36 abpurchase.info 199.188.200.150, 49168, 49170, 587 NAMECHEAP-NETUS United States 24->36 56 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->56 58 Tries to steal Mail credentials (via file access) 24->58 60 Tries to harvest and steal ftp login credentials 24->60 66 2 other signatures 24->66 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 28->62 64 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 28->64 signatures16
Threat name:
Script-Macro.Trojan.Heuristic
Status:
Malicious
First seen:
2021-01-09 09:31:39 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  2/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious use of FindShellTrayWindow
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
Process spawned unexpected child process
Malware Config
Dropper Extraction:
http://payment.unior.club/paymentconfirmation.exe
Please note that we are no longer able to provide a coverage score for Virus Total.

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:ach_AgentTesla_20200929
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:Email_stealer_bin_mem
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Author:James_inthe_box
Description:IP and port combo
Rule name:MALWARE_Win_AgentTeslaV3
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Author:James_inthe_box
Description:UAC bypass in files like avemaria
Rule name:win_agent_tesla_v1
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information


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

Malspam

AgentTesla

Excel file xlsm a41e9786e52fb3009f9c3322bca19e600a7f46689f36893a0564e382555fe4c6

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments