MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 89953e46e46ae3328a4739bb8af245c17cdb5b64543ceba6eded682d37f4c94c. 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
SilentBuilder
Vendor detections: 10
Maldoc score: 7
| SHA256 hash: | 89953e46e46ae3328a4739bb8af245c17cdb5b64543ceba6eded682d37f4c94c |
|---|---|
| SHA3-384 hash: | 84041bd98ae1c62ade96ba82375de27e7c4d70660f308108ab2ddcc65eb6334b515a187cbc8f06a4ed906dfa416bf2cd |
| SHA1 hash: | 943c8e36a07aa3e4c23a54fe91b2adb575a2ab13 |
| MD5 hash: | 7260a927b53b68e441dec0a0fbd04a44 |
| humanhash: | eight-princess-rugby-alaska |
| File name: | Attach-1430590832_FT50517610.xls |
| Download: | download sample |
| Signature | SilentBuilder |
| File size: | 47'104 bytes |
| First seen: | 2021-02-03 19:41:57 UTC |
| Last seen: | Never |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 768:5yq6FIpOCHAx+XHm9sLyaDIJeGf5NtgE8ObMlFeW+u7DFb6o+OWM+4dMoyXoacvB:5/6FIpOCHAx+XHm9sLyaDIJeGf5Nt/8z |
| TLSH | C723F89BFA51C856E5690B3850E387A97337FC018FA746873648B31A7FB16804E1366B |
| Reporter |  malware_traffic |
| Tags: | macro SilentBuilder 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: 7 |
| Application name is Microsoft Excel |
| Office document is in OLE format |
OLE dump
MalwareBazaar was able to identify 3 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 4096 bytes | DocumentSummaryInformation |
| 2 | 4096 bytes | SummaryInformation |
| 3 | 36871 bytes | Workbook |
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 | Auto_Open | Runs when the Excel Workbook is opened |
| Suspicious | EXEC | May run an executable file or a system |
| Suspicious | Hex Strings | Hex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
| Suspicious | Base64 Strings | Base64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) |
Intelligence
File Origin
# of uploads :
1
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Attach-1430590832_FT50517610.xls
Verdict:
Malicious activity
Analysis date:
2021-02-03 19:44:52 UTC
Tags:
macros opendir loader
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:
Malware
Maliciousness:
Behaviour
Creating a window
DNS request
Creating a file
Creating a process with a hidden window
Searching for the window
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Office File
Document image
Image:
Result
Verdict:
MALICIOUS
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Drops PE files to the user root directory
Found Excel 4.0 Macro with suspicious formulas
Machine Learning detection for dropped file
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: Microsoft Office Product Spawning Windows Shell
Behaviour
Behavior Graph:
Threat name:
Document-Excel.Trojan.Abracadabra
Status:
Malicious
First seen:
2021-02-03 19:42:10 UTC
File Type:
Document
Extracted files:
11
AV detection:
16 of 29 (55.17%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
macro xlm
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Loads dropped DLL
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
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: | Excel_Hidden_Macro_Sheet |
|---|
| Rule name: | INDICATOR_DOC_PhishingPatterns |
|---|---|
| Author: | ditekSHen |
| Description: | Detects OLE, RTF, PDF and OOXML (decompressed) documents with common phishing strings |
| 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: | SUSP_EnableContent_String_Gen |
|---|---|
| Author: | Florian Roth |
| Description: | Detects suspicious string that asks to enable active content in Office Doc |
| Reference: | Internal Research |
| Rule name: | SUSP_Excel4Macro_AutoOpen |
|---|---|
| Author: | John Lambert @JohnLaTwC |
| Description: | Detects Excel4 macro use with auto open / close |
| 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.
No further information available
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