MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 671b853a19abc7516c70d8d45b99c26db9bd9fb6ea87c6138ea70dd87a090a72. 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
ZLoader
Vendor detections: 8
Maldoc score: 5
| SHA256 hash: | 671b853a19abc7516c70d8d45b99c26db9bd9fb6ea87c6138ea70dd87a090a72 |
|---|---|
| SHA3-384 hash: | 3af9d5c6adc422a14579c8983d19fad996a10d293815b6e755df12d86b69d1d7401724e274076ab4fd73c3a9515e67bc |
| SHA1 hash: | beac4d49cc76f1aa5ac4b428c20f8b3afd4d7c92 |
| MD5 hash: | 94683d35640f949603cbc466379807b0 |
| humanhash: | uniform-louisiana-muppet-winter |
| File name: | SecuriteInfo.com.XLM.Mefisto.27.Gen.13143.12763 |
| Download: | download sample |
| Signature | ZLoader |
| File size: | 37'888 bytes |
| First seen: | 2020-12-01 04:05:40 UTC |
| Last seen: | Never |
| File type: |  xlsx |
| MIME type: | application/vnd.ms-excel |
| ssdeep | 768:QPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJoGn8OIoDiuldMLiPzPUB6:8ok3hbdlylKsgqopeJBWhZFGkE+cL2NC |
| TLSH | 790383E3F7C5ED65CE488379486742909722EC91AB6B938B3389F7253F71BA08907147 |
| Reporter |  SecuriteInfoCom |
| Tags: | ZLoader |
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: 5 |
| 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 | 27717 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 | 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 :
114
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file
Creating a process with a hidden window
DNS request
Sending a custom TCP request
Deleting a recently created file
Possible injection to a system process
Launching a process by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Office File
Result
Verdict:
MALICIOUS
Details
Excel 4.0 Macro
Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
84 / 100
Signature
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Injects code into the Windows Explorer (explorer.exe)
Microsoft Office drops suspicious files
Multi AV Scanner detection for submitted file
Potential malicious VBS script found (has network functionality)
Potential malicious VBS script found (suspicious strings)
System process connects to network (likely due to code injection or exploit)
Behaviour
Behavior Graph:
Threat name:
Document-Excel.Trojan.ZLoader
Status:
Malicious
First seen:
2020-11-30 07:54:41 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
8/10
Tags:
macro
Behaviour
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of SetWindowsHookEx
Checks processor information in registry
JavaScript code in executable
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.61
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.