MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 40902a40b1d1abd6e6b7a2d4c463d454e92eaecb3a7518d046754ffd269f217a. 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
Formbook
Vendor detections: 9
Maldoc score: 13
| SHA256 hash: | 40902a40b1d1abd6e6b7a2d4c463d454e92eaecb3a7518d046754ffd269f217a |
|---|---|
| SHA3-384 hash: | cf5f60258c2022a7756dd12d753caa476ac94e8283143144590c52bbb9a5ffcb90f76f10e908eee53bab4222f60a27a3 |
| SHA1 hash: | 6d6964955d1c4e620e79e48c69e292f18c2402a6 |
| MD5 hash: | 49be70c935e80f0e61debd1ca5b8f87f |
| humanhash: | oregon-ack-charlie-india |
| File name: | Payment receipt.xlam |
| Download: | download sample |
| Signature | Formbook |
| File size: | 21'010 bytes |
| First seen: | 2021-08-12 06:26:54 UTC |
| Last seen: | Never |
| File type: |  xlsx |
| MIME type: | application/vnd.openxmlformats-officedocument.spreadsheetml.sheet |
| ssdeep | 384:AKlM2l//oLwZ2qCEFUraHV+gziz9k+vQITMaTJqrm:AKlMa3Z2xEFRHV+gziFoIgEqrm |
| TLSH | T12F92C0DDC5827711D6125ABCD0CC9312D9D1BE8C8747C2AF2E14F65C2A8BA031A5B25E |
| Reporter |  cocaman |
| Tags: | FormBook xlam xlsx |
cocaman
Malicious email (T1566.001)From: "=?UTF-8?B?TXIuIEFtcmFuaSBOYcOvbQ==?= <amy.kim@dachser.com>" (likely spoofed)
Received: "from mta0.dachser.com (unknown [142.93.234.74]) "
Date: "12 Aug 2021 07:47:47 +0200"
Subject: "Re: Payment"
Attachment: "Payment receipt.xlam"
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: 13 |
OLE dump
MalwareBazaar was able to identify 12 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| A1 | 447 bytes | PROJECT |
| A2 | 74 bytes | PROJECTwm |
| A3 | 991 bytes | VBA/Sheet1 |
| A4 | 2310 bytes | VBA/ThisWorkbook |
| A5 | 3778 bytes | VBA/_VBA_PROJECT |
| A6 | 1843 bytes | VBA/__SRP_0 |
| A7 | 203 bytes | VBA/__SRP_1 |
| A8 | 439 bytes | VBA/__SRP_2 |
| A9 | 484 bytes | VBA/__SRP_3 |
| A10 | 552 bytes | VBA/dir |
| A11 | 13559 bytes | VBA/wjd |
OLE vba
MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:
| Type | Keyword | Description |
|---|---|---|
| AutoExec | workbook_open | Runs when the Excel Workbook is opened |
| Suspicious | shell | May run an executable file or a system command |
| Suspicious | WSCript.shell | May run an executable file or a system command |
| Suspicious | Run | May run an executable file or a system command |
| Suspicious | CreateObject | May create an OLE object |
| Suspicious | Chr | May attempt to obfuscate specific strings (use option --deobf to deobfuscate) |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
292
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Payment receipt.xlam
Verdict:
No threats detected
Analysis date:
2021-08-12 06:30:38 UTC
Tags:
macros macros-on-open
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
True
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Sending a custom TCP request
Creating a window
Creating a process with a hidden window
Sending a UDP request
Launching a process
Transferring files using the Background Intelligent Transfer Service (BITS)
Connection attempt
Sending an HTTP GET request
Creating a file in the %temp% directory
Enabling the 'hidden' option for files in the %temp% directory
Moving a file to the %temp% directory
Creating a process from a recently created file
Searching for the window
Creating a file
Launching cmd.exe command interpreter
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Running batch commands by exploiting the app vulnerability
Unauthorized injection to a system process
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Result
Verdict:
MALICIOUS
Link:
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
C2 URLs / IPs found in malware configuration
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)
Encrypted powershell cmdline option found
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Obfuscated command line found
PowerShell case anomaly found
Sigma detected: Microsoft Office Product Spawning Windows Shell
Tries to detect virtualization through RDTSC time measurements
Very long command line found
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Threat name:
Script.Trojan.Valyria
Status:
Malicious
First seen:
2021-08-11 03:31:01 UTC
File Type:
Document
Extracted files:
24
AV detection:
11 of 47 (23.40%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
xloader
Score:
10/10
Tags:
family:xloader campaign:niot loader macro rat suricata
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Downloads MZ/PE file
Xloader Payload
Process spawned unexpected child process
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
Malware Config
C2 Extraction:
http://www.daisypaperstudio.com/niot/
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Malspam
Delivery method
Distributed via e-mail attachment
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