MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 7389677e946cac4226da9b84eca90b94b59d46cf2bf4541ea58d96d39e6669d5. 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: | 7389677e946cac4226da9b84eca90b94b59d46cf2bf4541ea58d96d39e6669d5 |
|---|---|
| SHA3-384 hash: | bab6bbc27273013a49239d436d0f608c8e5c6c64c1f5dee2c98eaf6612553e3a8379b0b3346999474032985adc86f66c |
| SHA1 hash: | e5de9340e03e98e6e0b8f6630cfd40295a6c9881 |
| MD5 hash: | c4356a3b949b77bce8be5ecf2def64db |
| humanhash: | william-echo-don-cold |
| File name: | OCC-221220-TBU1XAT7X4.xls |
| Download: | download sample |
| Signature | SilentBuilder |
| File size: | 323'584 bytes |
| First seen: | 2020-12-23 13:35:33 UTC |
| Last seen: | 2020-12-23 15:32:31 UTC |
| File type: |  xls |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 6144:z6FIpOCHAx+XHm9sLyaDIJ/fzGM8YZCkBFqrF0rKoRqy0VUtl+IVgeusvZhIcEPs:DirNRHcIS2I7a/7pY |
| TLSH | 8564F1C2774EC641E61943380FC7C5965F6BEC0296B22B8B66417F1EAB36D908F32671 |
| Reporter |  JAMESWT_WT |
| Tags: | Gozi ifsb SilentBuilder Ursnif 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 |
| Office document contains VBA Macros |
OLE dump
MalwareBazaar was able to identify 9 sections in this file using oledump:
| Section ID | Section size | Section name |
|---|---|---|
| 1 | 102 bytes | CompObj |
| 2 | 276 bytes | DocumentSummaryInformation |
| 3 | 208 bytes | SummaryInformation |
| 4 | 313288 bytes | Workbook |
| 5 | 318 bytes | _VBA_PROJECT_CUR/PROJECT |
| 6 | 20 bytes | _VBA_PROJECT_CUR/PROJECTwm |
| 7 | 2189 bytes | _VBA_PROJECT_CUR/VBA/_VBA_PROJECT |
| 8 | 459 bytes | _VBA_PROJECT_CUR/VBA/dir |
| 9 | 976 bytes | _VBA_PROJECT_CUR/VBA/2 |
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 :
2
# of downloads :
1'116
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
http://wehopestream.com/tmpls.php
Verdict:
No threats detected
Analysis date:
2020-12-23 13:25:32 UTC
Tags:
macros
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
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Launching the default Windows debugger (dwwin.exe)
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Payload URLs
URL
File name
http://companieshouseonlinedownload.com/ox9.png
WorkBook
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 Ursnif
Detection:
malicious
Classification:
bank.troj.expl.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
Creates a COM Internet Explorer object
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
Downloads files with wrong headers with respect to MIME Content-Type
Drops PE files to the user root directory
Found Excel 4.0 Macro with suspicious formulas
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
Writes registry values via WMI
Yara detected Ursnif
Behaviour
Behavior Graph:
Threat name:
Document-Office.Trojan.Silentbuilder
Status:
Malicious
First seen:
2020-12-23 12:58:17 UTC
File Type:
Document
Extracted files:
10
AV detection:
15 of 48 (31.25%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
10/10
Tags:
macro
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Process spawned suspicious child process
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:
Malicious File
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: | 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_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 |
| Rule name: | win_isfb_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | autogenerated rule brought to you by yara-signator |
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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