MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c095da601306b7b302462f36d3b945e6f85b64a7d46ac5f944802040eb5b62a9. 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: 3


Intelligence 8 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c095da601306b7b302462f36d3b945e6f85b64a7d46ac5f944802040eb5b62a9
SHA3-384 hash: 56ae741c576442018cad9df77ece8daafee722bf7175680a0b039b3c18835bcb342f6a2af15f0e3c07ac073fd62f97f5
SHA1 hash: f70a04b37a7ca48a07d9ce5b2fbafd6bbeafb6b7
MD5 hash: f3b7b67652ddb27a3cf44684c8116ae5
humanhash: zebra-mountain-twelve-three
File name:SecuriteInfo.com.Exploit.Siggen3.1917.3880.8868
Download: download sample
Signature ZLoader
Create hunting rule
File size:37'376 bytes
First seen:2020-12-01 05:06:50 UTC
Last seen:2020-12-01 05:53:55 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 768:LPqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJWXCjHMUhj1uJxgHVP:zok3hbdlylKsgqopeJBWhZFGkE+cL2NW
TLSH D2F293E3BBD5ED29CE044379486B42A0A712EC915B6B938B3389F7293F757E04E07146
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: 3
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 IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
327303 bytesWorkbook
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
AutoExecAuto_OpenRuns when the Excel Workbook is opened
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 :
111
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Exploit.Siggen3.1917.3880.8868.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWhere.20200720.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderUnicodeRoadToNoWherePartDuex.20200730.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.20201116.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ZloaderShineOnYouCrazyDiamondParts1to9.M2.20201116.UNOFFICIAL
Create hunting rule

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
Link:
https://app.docguard.net/c095da601306b7b302462f36d3b945e6f85b64a7d46ac5f944802040eb5b62a9/results/dashboard
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:
92 / 100
Link:
https://www.joesandbox.com/analysis/551843
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
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 325031 Sample: SecuriteInfo.com.Exploit.Si... Startdate: 01/12/2020 Architecture: WINDOWS Score: 92 33 Multi AV Scanner detection for submitted file 2->33 35 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->35 37 Potential malicious VBS script found (suspicious strings) 2->37 39 Potential malicious VBS script found (has network functionality) 2->39 6 EXCEL.EXE 60 26 2->6         started        10 explorer.exe 2 2->10         started        12 explorer.exe 2->12         started        process3 file4 27 C:\Users\Public\Documents\rl3cVPO4.vbs, ASCII 6->27 dropped 29 C:\Users\Public\Documents\i53bDUza.vbs, ASCII 6->29 dropped 43 Document exploit detected (creates forbidden files) 6->43 45 Injects code into the Windows Explorer (explorer.exe) 6->45 47 Document exploit detected (process start blacklist hit) 6->47 49 Microsoft Office drops suspicious files 6->49 14 explorer.exe 1 6->14         started        16 explorer.exe 1 6->16         started        18 wscript.exe 4 1 10->18         started        23 wscript.exe 12->23         started        signatures5 process6 dnsIp7 31 skill.fashion 104.27.187.55, 443, 49165 CLOUDFLARENETUS United States 18->31 25 C:\Users\Public\Documents\WrZSg0w.txt, HTML 18->25 dropped 41 System process connects to network (likely due to code injection or exploit) 18->41 file8 signatures9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c095da601306b7b302462f36d3b945e6f85b64a7d46ac5f944802040eb5b62a9/
Threat name:
Document-Excel.Trojan.ZLoader
Create hunting rule
Status:
Malicious
First seen:
2020-11-27 23:28:18 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yck5uyata233gasgf43nhokf434fwzfh2rvml6keqaqeb223mkuq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
macro
Link:
https://tria.ge/reports/201201-tlhaqlmf9n/
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:
ZLoader
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c095da601306b7b302462f36d3b945e6f85b64a7d46ac5f944802040eb5b62a9

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

ZLoader

Excel file xlsx c095da601306b7b302462f36d3b945e6f85b64a7d46ac5f944802040eb5b62a9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/876958/
  
Delivery method
Distributed via web download

Comments