MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6. 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: 14


Maldoc score: 6


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6
SHA3-384 hash: e1b3cc26cc75487ba3b8f571a22d95bff6a51a77b742bb84ed242a572f445f6e3a4dd064f5dcb06aa2845996019d2a72
SHA1 hash: 9f3bcf953b0f95ac528c23c40c2a3aa04ef81c31
MD5 hash: 2bf0764ff73298d99a582d998f030642
humanhash: paris-fillet-moon-king
File name:Fattura 11155.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:76'288 bytes
First seen:2022-06-20 08:49:16 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:VTOKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgTKHuS4NcTO9/z7UYdEJBs:VaKpb8rGYrMPe3q7Q0XV5xtezEsi8/dU
TLSH T10A733A96B659CA9DFA25873149D747AA6323FC304F6B07433264B3257FFC9A04A0721B
TrID 80.2% (.XLS) Microsoft Excel sheet (32500/1/3)
19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter Anonymous
Tags: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: 6
OLE dump

MalwareBazaar was able to identify 3 sections in this file using oledump:

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
365851 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
SuspiciousURLDownloadToFileAMay download files from the Internet
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
1
# of downloads :
216
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Detection:
Emotet
Create hunting rule
Link:
https://www.capesandbox.com/analysis/281466/
Detection(s):
SecuriteInfo.com.Macro.Downloader-17.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.XlsM.Urlmon1.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.Excel4DragoTrainingMontage.20210204.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4MStringFractures.20210921.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20210611.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4DataopItWasGoodLivingWithYou.20211109.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DataOpGodGaveRockNRoll2U.20211215.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.XL4QakyFeaturingNothingNowhere.M2.20220215.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Сreating synchronization primitives
DNS request
Creating a file
Creating a process with a hidden window
Launching a process
Moving a recently created file
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
80%
Tags:
coinminer emotet greyware macros macros-on-open packed regsvr32
Link:
https://www.filescan.io/uploads/62b034f7dbe9c7c949720c01/reports/8d7d197d-5736-4593-a7ba-3b8d4fba0ca6/overview
Label:
Malicious
Suspicious Score:
5.3/10
Score Malicious:
53%
Score Benign:
47%
Link:
https://www.malware.ai/gui/files/?id=5d4a6303-319f-4bbc-aa39-f79340260abd
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6
Details
Autostarting Excel Macro Sheet
Excel contains Macrosheet logic that will trigger automatically upon document open.
Result
Threat name:
Hidden Macro 4.0, Emotet
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1016152
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document exploit detected (creates forbidden files)
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
Found malicious Excel 4.0 Macro
Hides that the sample has been downloaded from the Internet (zone.identifier)
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Yara detected Emotet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 648648 Sample: Fattura 11155.xls Startdate: 20/06/2022 Architecture: WINDOWS Score: 100 51 145.225.171.2 WTNET-ASwilhelmtelGmbHDE Germany 2->51 53 132.247.171.2 UniversidadNacionalAutonomadeMexicoMX Mexico 2->53 55 27 other IPs or domains 2->55 71 Snort IDS alert for network traffic 2->71 73 Antivirus detection for URL or domain 2->73 75 Found malicious Excel 4.0 Macro 2->75 77 8 other signatures 2->77 8 EXCEL.EXE 53 29 2->8         started        13 svchost.exe 2->13         started        signatures3 process4 dnsIp5 57 bdtin.com 112.213.89.130, 49171, 80 SUPERDATA-AS-VNSUPERDATA-VN Viet Nam 8->57 59 bascoysonido.com.ar 104.156.58.29, 49172, 80 HVC-ASUS United States 8->59 61 basnetbd.com 167.86.113.96, 49173, 80 CONTABODE Germany 8->61 35 C:\Users\user\cui4.ocx, PE32+ 8->35 dropped 37 C:\Users\user\cui3.ocx, PE32+ 8->37 dropped 39 C:\Users\user\cui2.ocx, PE32+ 8->39 dropped 41 6 other malicious files 8->41 dropped 81 Document exploit detected (creates forbidden files) 8->81 83 Document exploit detected (UrlDownloadToFile) 8->83 15 regsvr32.exe 2 8->15         started        19 regsvr32.exe 2 8->19         started        21 regsvr32.exe 2 8->21         started        23 regsvr32.exe 2 8->23         started        file6 signatures7 process8 file9 43 C:\Windows\System32\...\QCLOcbTQ.dll (copy), PE32+ 15->43 dropped 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->69 25 regsvr32.exe 9 15->25         started        45 C:\Windows\System32\...behaviorgraphdMVCBp.dll (copy), PE32+ 19->45 dropped 28 regsvr32.exe 11 19->28         started        47 C:\Windows\System32\...\wQCFFwZNg.dll (copy), PE32+ 21->47 dropped 31 regsvr32.exe 9 21->31         started        49 C:\Windows\System32\...\tcCElSWuR.dll (copy), PE32+ 23->49 dropped 33 regsvr32.exe 9 23->33         started        signatures10 process11 dnsIp12 79 System process connects to network (likely due to code injection or exploit) 25->79 63 139.162.113.169, 49177, 49180, 49181 LINODE-APLinodeLLCUS Netherlands 28->63 65 45.76.181.158, 443, 49174, 49175 AS-CHOOPAUS United States 28->65 67 135.148.6.80, 443, 49182, 49183 AVAYAUS United States 31->67 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-06-20 08:50:07 UTC
File Type:
Document
Extracted files:
10
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hihyk3foyss375nnv44nqm7wsycmv4vbu67cyo3sqhyhnauq6pta._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch4 banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220620-krldzsbfbn/
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 SetWindowsHookEx
Suspicious use of WriteProcessMemory
Loads dropped DLL
Downloads MZ/PE file
Emotet
Process spawned unexpected child process
suricata: ET MALWARE W32/Emotet CnC Beacon 3
Malware Config
C2 Extraction:
82.165.152.127:8080
51.161.73.194:443
103.75.201.2:443
5.9.116.246:8080
213.241.20.155:443
79.137.35.198:8080
119.193.124.41:7080
186.194.240.217:443
172.105.226.75:8080
150.95.66.124:8080
131.100.24.231:80
94.23.45.86:4143
209.97.163.214:443
206.189.28.199:8080
173.212.193.249:8080
153.126.146.25:7080
51.91.76.89:8080
1.234.2.232:8080
163.44.196.120:8080
149.56.131.28:8080
146.59.226.45:443
45.118.115.99:8080
139.162.113.169:8080
196.218.30.83:443
212.24.98.99:8080
115.68.227.76:8080
64.227.100.222:8080
207.148.79.14:8080
209.126.98.206:8080
151.106.112.196:8080
45.186.16.18:443
167.172.253.162:8080
160.16.142.56:8080
72.15.201.15:8080
158.69.222.101:443
91.207.28.33:8080
103.70.28.102:8080
185.4.135.165:8080
144.91.78.55:443
82.223.21.224:8080
45.235.8.30:8080
135.148.6.80:443
188.44.20.25:443
101.50.0.91:8080
46.55.222.11:443
159.89.202.34:443
134.122.66.193:8080
45.176.232.124:443
164.68.99.3:8080
103.43.75.120:443
183.111.227.137:8080
45.76.181.158:443
107.170.39.149:8080
110.232.117.186:8080
159.65.140.115:443
51.254.140.238:7080
159.65.88.10:8080
103.132.242.26:8080
172.104.251.154:8080
37.187.115.122:8080
197.242.150.244:8080
129.232.188.93:443
201.94.166.162:443
Dropper Extraction:
http://bdtin.com/cache/4G8pl/
http://bascoysonido.com.ar/cgi-bin/AmUUPhWK6oTKLzHpl7zm/
http://basnetbd.com/ckfinder/K0a/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3a0f856caec4/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/3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6

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:Excel_Hidden_Macro_Sheet
Create hunting rule
Rule name:exploit_any_poppopret
Create hunting rule
Author:Jeff White [karttoon@gmail.com] @noottrak
Description:Identify POP -> POP -> RET opcodes for quick ROP Gadget creation in target binaries.
Rule name:Qbot
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule to Detect Qbot

File information

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

Malspam

SilentBuilder

Excel file xls 3a0f856caec4a5bff5adaf38d833f69604caf2a1a7be2c3b7281f0768290f3e6

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/281466/

Comments