MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 93efddc9a1d22d4d35b27eb768d037e145f65a8f60047a50d9715dfd6128d5da. 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: 12

Maldoc score: 5

Intelligence 12 IOCs YARA 3 File information Comments 1

SHA256 hash:	93efddc9a1d22d4d35b27eb768d037e145f65a8f60047a50d9715dfd6128d5da
SHA3-384 hash:	63c3c63387c71f5ee783d2ff6d7dce7374b665bad6e1b562287e60274a548beecc6e8c75b0ca1f0daa4ab64ae9a2fdd2
SHA1 hash:	093e53113d26bef57da0d770b95bfdf7fe6933cc
MD5 hash:	9e4194ca4de02aa66c14dbd1e511d239
humanhash:	lithium-cardinal-cola-foxtrot
File name:	9e4194ca4de02aa66c14dbd1e511d239
Download:	download sample
Signature	SilentBuilder Create hunting rule
File size:	130'579 bytes
First seen:	2022-01-18 15:53:44 UTC
Last seen:	Never
File type:	xlsx
MIME type:	application/vnd.ms-excel
ssdeep	3072:Wuk3hbdlylKsgqopeJBWhZFGkE+cL2NdAxEvN8B/W6X1yxYovrepMUdQ6gSz4i:Fk3hbdlylKsgqopeJBWhZFVE+W2NdAmv
TLSH	T178D3AE03A5458F86D54C83B47F5745C46F03AE1CEAF62ACF2542BB133B7ABB1490A52E
Reporter	zbetcheckin
Tags:	excel SilentBuilder xlsx

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

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	120088 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	XLM macro	XLM macro found. It may contain malicious code

Intelligence

File Origin

# of uploads :

# of downloads :

130

Origin country :

n/a

Vendor Threat Intelligence

Verdict:

Malicious

File type:

application/vnd.openxmlformats-officedocument.spreadsheetml.sheet

Has a screenshot:

False

Contains macros:

False

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/220254/

Detection(s):

SecuriteInfo.com.Trojan.GenericKD.47707798.UNOFFICIAL

TwinWave.EvilDoc.DOCXRSTRGOOD.MSHTA.210816.UNOFFICIAL

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL

TwinWave.EvilDoc.DOCXSTRGOODXL4.HTTP

Result

Verdict:

Malware

Maliciousness:

Behaviour

Launching a process

Sending an HTTP GET request

Creating a file

Running batch commands

Moving a recently created file

DNS request

Searching for the window

Sending a custom TCP request

Creating a window

Сreating synchronization primitives

Creating a process with a hidden window

Changing an executable file

Running batch commands by exploiting the app vulnerability

Infecting executable files

Sending an HTTP GET request to an infection source

Result

Verdict:

Malicious

File Type:

Legacy Excel File

Link:

https://app.docguard.net/93efddc9a1d22d4d35b27eb768d037e145f65a8f60047a50d9715dfd6128d5da/results/dashboard

Document image

Image:

Download PNG

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cmd cmd.exe excel.exe macros macros-on-open mshta mshta.exe print.exe stripped

Link:

https://www.filescan.io/uploads/61e6e2a4f81da814af8ca379/reports/69208f69-acff-4e3c-9ef5-44c444dc5fb6/overview

Label:

Malicious

Suspicious Score:

7.8/10

Score Malicious:

79%

Score Benign:

21%

Link:

https://www.malware.ai/gui/files/?id=cb530f4d-10b2-466a-b739-952eabba8d6c

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/93efddc9a1d22d4d35b27eb768d037e145f65a8f60047a50d9715dfd6128d5da

Details

Excel 4.0 Macro

Document contains Excel 4.0 macros (XLM). A valid, albeit dated feature, this document should be treated with suspicion.

Macro Execution Coercion

Detected a document that appears to social engineer the user into activating embedded logic.

Autostarting Excel Macro Sheet

Excel contains Macrosheet logic that will trigger automatically upon document open.

Document With Minimal Content

Document contains less than 1 kilobyte of semantic information.

Result

Threat name:

Hidden Macro 4.0

Detection:

malicious

Classification:

expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/922588

Signature

Antivirus detection for URL or domain

Document exploit detected (process start blacklist hit)

Found Excel 4.0 Macro with suspicious formulas

Hides that the sample has been downloaded from the Internet (zone.identifier)

Machine Learning detection for dropped file

Multi AV Scanner detection for dropped file

Multi AV Scanner detection for submitted file

Obfuscated command line found

Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)

Powershell drops PE file

Sigma detected: Microsoft Office Product Spawning Windows Shell

Sigma detected: MSHTA Spawning Windows Shell

Sigma detected: Suspicious MSHTA Process Patterns

Sigma detected: Suspicious PowerShell Command Line

Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)

System process connects to network (likely due to code injection or exploit)

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/93efddc9a1d22d4d35b27eb768d037e145f65a8f60047a50d9715dfd6128d5da/

Threat name:

Document-Excel.Trojan.Emotet

Status:

Malicious

First seen:

2022-01-18 15:48:51 UTC

AV detection:

22 of 43 (51.16%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=spx53snb2iwu2nnsp23wrubx4fc7mwupmachuugzofo72yji2xna._file

Result

Malware family:

redline

Score:

10/10

Tags:

family:emotet family:redline botnet:epoch4 banker infostealer macro trojan xlm

Link:

https://tria.ge/reports/220118-tb8c9abhd6/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies Internet Explorer settings

Modifies registry class

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Program crash

Drops file in System32 directory

Checks computer location settings

Loads dropped DLL

Blocklisted process makes network request

Downloads MZ/PE file

Emotet

Process spawned unexpected child process

RedLine

RedLine Payload

Suspicious use of NtCreateProcessExOtherParentProcess

Malware Config

C2 Extraction:

131.100.24.231:80
209.59.138.75:7080
103.8.26.103:8080
51.38.71.0:443
212.237.17.99:8080
79.172.212.216:8080
207.38.84.195:8080
104.168.155.129:8080
178.79.147.66:8080
46.55.222.11:443
103.8.26.102:8080
192.254.71.210:443
45.176.232.124:443
203.114.109.124:443
51.68.175.8:8080
58.227.42.236:80
45.142.114.231:8080
217.182.143.207:443
178.63.25.185:443
45.118.115.99:8080
103.75.201.2:443
104.251.214.46:8080
158.69.222.101:443
81.0.236.90:443
45.118.135.203:7080
176.104.106.96:8080
212.237.56.116:7080
216.158.226.206:443
173.212.193.249:8080
50.116.54.215:443
138.185.72.26:8080
41.76.108.46:8080
212.237.5.209:443
107.182.225.142:8080
195.154.133.20:443
162.214.50.39:7080
110.232.117.186:8080

Dropper Extraction:

http://0xb907d607/cc.html
http://185.7.214.7/PP91.PNG

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/93efddc9a1d2/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/93efddc9a1d22d4d35b27eb768d037e145f65a8f60047a50d9715dfd6128d5da

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.