MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d9c745aa956faf9924734fc856bc69a23820e0d76b37a75c0889bdd2e53d4415. 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: 11


Maldoc score: 15


Intelligence 11 IOCs YARA 6 File information Comments

SHA256 hash: d9c745aa956faf9924734fc856bc69a23820e0d76b37a75c0889bdd2e53d4415
SHA3-384 hash: a815127e695c5145d64f5a052bb67709d52c06a7e6169d6db0937d5a742ad205949d82903afc363ef86ac9910d2bd9b6
SHA1 hash: e486de368a011933936173cb22058ff06d0a1bee
MD5 hash: ceeedc713249ae7aee31841c389393b8
humanhash: eleven-washington-mexico-island
File name:IMG_01_76_308.xls
Download: download sample
Signature AgentTesla
File size:120'832 bytes
First seen:2021-06-01 13:10:35 UTC
Last seen:2021-06-01 14:00:17 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:Uk3hOdsylKlgryzc4bNhZFGzE+cL2knAsioo1gaSNAPZesWFPO7YiR6PJEcjjaPF:Uk3hOdsylKlgryzc4bNhZF+E+W2knAsG
TLSH ACC3BF9276A3D406DD4F43392CE682CB2752BC114E7F42B7B7A5FB0ECB75A84490261B
Reporter abuse_ch
Tags:AgentTesla xls

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: 15
Application name is Microsoft Excel
Office document is in OLE format
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 11 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4107277 bytesWorkbook
5467 bytes_VBA_PROJECT_CUR/PROJECT
686 bytes_VBA_PROJECT_CUR/PROJECTwm
7961 bytes_VBA_PROJECT_CUR/VBA/Module1
8991 bytes_VBA_PROJECT_CUR/VBA/Sheet1
91852 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
102639 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
11562 bytes_VBA_PROJECT_CUR/VBA/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
Suspiciouswscript.shellMay run an executable file or a system command
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
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)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
2
# of downloads :
209
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IMG_01_76_308.xls
Verdict:
Malicious activity
Analysis date:
2021-06-01 14:40:23 UTC
Tags:
macros macros-on-open ta505

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
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Using BITS transfer job for data transfer
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://scaladevelopments.scaladevco.com/17/ConsoleApp18.ex
ThisWorkbook
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 Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
InQuest Machine Learning
An InQuest machine-learning model classified this macro as potentially malicious.
Result
Threat name:
AgentTesla
Detection:
malicious
Classification:
expl.troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an undocumented autostart registry key
Document contains an embedded VBA macro which may execute processes
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
Machine Learning detection for dropped file
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: Execution from Suspicious Folder
Sigma detected: Microsoft Office Product Spawning Windows Shell
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 427712 Sample: IMG_01_76_308.xls Startdate: 01/06/2021 Architecture: WINDOWS Score: 100 30 scaladevelopments.scaladevco.com 2->30 32 Multi AV Scanner detection for domain / URL 2->32 34 Found malware configuration 2->34 36 Multi AV Scanner detection for submitted file 2->36 38 11 other signatures 2->38 9 EXCEL.EXE 34 26 2->9         started        signatures3 process4 process5 11 powershell.exe 30 9->11         started        process6 13 partbit.exe 29 11->13         started        17 conhost.exe 11->17         started        file7 26 C:\Users\user\AppData\Roaming\...\chrome.exe, PE32 13->26 dropped 28 C:\Users\user\AppData\Local\...\partbit.exe, PE32 13->28 dropped 44 Creates an undocumented autostart registry key 13->44 46 Writes to foreign memory regions 13->46 48 Allocates memory in foreign processes 13->48 50 Injects a PE file into a foreign processes 13->50 19 partbit.exe 13->19         started        22 partbit.exe 2 13->22         started        24 partbit.exe 13->24         started        signatures8 process9 signatures10 40 Machine Learning detection for dropped file 19->40 42 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 19->42
Threat name:
Script.Downloader.Heuristic
Status:
Malicious
First seen:
2021-06-01 13:11:07 UTC
AV detection:
7 of 46 (15.22%)
Threat level:
  2/5
Result
Malware family:
agenttesla
Score:
  10/10
Tags:
family:agenttesla keylogger macro macro_on_action spyware stealer trojan xlm
Behaviour
Checks processor information in registry
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
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
AgentTesla Payload
AgentTesla
Process spawned unexpected child process
Malware Config
Dropper Extraction:
http://scaladevelopments.scaladevco.com/17/ConsoleApp18.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: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: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:silentbuilder_halo_generated
Author:Halogen Generated Rule, Corsin Camichel
Rule name:UAC_bypass_bin_mem
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 d9c745aa956faf9924734fc856bc69a23820e0d76b37a75c0889bdd2e53d4415

(this sample)

  
Delivery method
Distributed via e-mail attachment

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