MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06. 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: 4


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06
SHA3-384 hash: 3d0e8d251f3f658ab67e34f3c76196a10895d0023cba0d484810be077047e0021817c78d4efe555fed18b39dd5b786ab
SHA1 hash: 8397935ac4c88004ae887e8a20cd0c55523340b1
MD5 hash: 3412d967b3ebac85718074118fa94bb3
humanhash: sodium-ink-oscar-three
File name:56057752920617982_1.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:65'024 bytes
First seen:2022-06-15 06:47:13 UTC
Last seen:2022-06-15 06:47:14 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:dpKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg9HuS4VcTO9/r7UYdEJe5oV/:bKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgv
TLSH T166534A96BA59CA5DF915873148D74BAA6313FC304F6B0B433264B3267FFC9A04A0721B
TrID 80.2% (.XLS) Microsoft Excel sheet (32500/1/3)
19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter TeamDreier
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: 4
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
354973 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
SuspiciousXLM macroXLM macro found. It may contain malicious code

Intelligence

File Origin
# of uploads :
2
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
56057752920617982_1.xls
Verdict:
Malicious activity
Analysis date:
2022-06-15 08:08:05 UTC
Tags:
macros loader
Link:
https://app.any.run/tasks/64830524-ff09-42a4-8b37-9fc9fd971045

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:
n/a
Link:
https://www.capesandbox.com/analysis/280051/
Detection(s):
SecuriteInfo.com.XLM.Trojan.Abracadabra.8.Gen.7392.22861.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Macro.Downloader-17.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
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
Sending a custom TCP request by exploiting the app vulnerability
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06/results/dashboard
Payload URLs
URL
File name
balticcontrolbd.com
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware macros macros-on-open packed regsvr32
Link:
https://www.filescan.io/uploads/62a980a64d1ff31e31c0280c/reports/32cb4b61-fb62-41c8-a5b0-b78ec06ef3ce/overview
Label:
Benign
Suspicious Score:
2.1/10
Score Malicious:
22%
Score Benign:
78%
Link:
https://www.malware.ai/gui/files/?id=3e647255-3457-4dab-a8a2-1a84dbe0870d
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06
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/1013503
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)
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
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: 646000 Sample: 56057752920617982_1.xls Startdate: 15/06/2022 Architecture: WINDOWS Score: 100 49 129.232.188.93 xneeloZA South Africa 2->49 51 45.235.8.30 WIKINETTELECOMUNICACOESBR Brazil 2->51 53 59 other IPs or domains 2->53 65 Antivirus detection for URL or domain 2->65 67 Multi AV Scanner detection for submitted file 2->67 69 Found malicious Excel 4.0 Macro 2->69 71 8 other signatures 2->71 8 EXCEL.EXE 7 26 2->8         started        signatures3 process4 dnsIp5 59 careofu.com 175.98.167.163, 443, 49173 TFN-TWTaiwanFixedNetworkTelcoandNetworkServiceProvi Taiwan; Republic of China (ROC) 8->59 61 komunitas.blog.gunadarma.ac.id 118.98.72.14, 443, 49176 TELKOMNET-AS-APPTTelekomunikasiIndonesiaID Indonesia 8->61 63 4 other IPs or domains 8->63 33 C:\Users\user\hhwe4.ocx, PE32+ 8->33 dropped 35 C:\Users\user\hhwe3.ocx, PE32+ 8->35 dropped 37 C:\Users\user\hhwe2.ocx, PE32+ 8->37 dropped 39 6 other malicious files 8->39 dropped 75 Document exploit detected (creates forbidden files) 8->75 77 Document exploit detected (UrlDownloadToFile) 8->77 13 regsvr32.exe 2 8->13         started        17 regsvr32.exe 2 8->17         started        19 regsvr32.exe 2 8->19         started        21 regsvr32.exe 2 8->21         started        file6 signatures7 process8 file9 41 C:\Windows\System32\...\svPrM.dll (copy), PE32+ 13->41 dropped 79 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->79 23 regsvr32.exe 2 13->23         started        43 C:\Windows\System32\...\uQtKHAUyg.dll (copy), PE32+ 17->43 dropped 27 regsvr32.exe 17->27         started        45 C:\Windows\System32\...\eKpQkwWa.dll (copy), PE32+ 19->45 dropped 29 regsvr32.exe 19->29         started        47 C:\Windows\...\dNwIvVvkofxf.dll (copy), PE32+ 21->47 dropped 31 regsvr32.exe 21->31         started        signatures10 process11 dnsIp12 55 172.105.226.75, 49181, 8080 LINODE-APLinodeLLCUS United States 23->55 73 System process connects to network (likely due to code injection or exploit) 23->73 57 144.91.78.55, 443, 49177, 49178 CONTABODE Germany 27->57 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06/
Threat name:
Document-Excel.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2022-06-15 04:51:40 UTC
File Type:
Document
Extracted files:
9
AV detection:
24 of 41 (58.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jph2cctalkrhuy4m3biizchi53btrm3anctpzmqrcmjqgeggduda._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220615-hkr7vaebb7/
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:
101.50.0.91:8080
159.89.202.34:443
209.97.163.214:443
173.212.193.249:8080
159.65.88.10:8080
45.118.115.99:8080
82.165.152.127:8080
207.148.79.14:8080
41.73.252.195:443
196.218.30.83:443
103.75.201.2:443
64.227.100.222:8080
149.56.131.28:8080
103.43.75.120:443
188.44.20.25:443
185.4.135.165:8080
91.207.28.33:8080
110.232.117.186:8080
72.15.201.15:8080
45.176.232.124:443
46.55.222.11:443
163.44.196.120:8080
172.105.226.75:8080
5.9.116.246:8080
150.95.66.124:8080
94.23.45.86:4143
107.170.39.149:8080
209.126.98.206:8080
212.24.98.99:8080
167.172.253.162:8080
146.59.226.45:443
115.68.227.76:8080
164.68.99.3:8080
206.189.28.199:8080
186.194.240.217:443
158.69.222.101:443
172.104.251.154:8080
103.70.28.102:8080
45.186.16.18:443
51.254.140.238:7080
197.242.150.244:8080
51.161.73.194:443
201.94.166.162:443
160.16.142.56:8080
213.241.20.155:443
129.232.188.93:443
134.122.66.193:8080
45.235.8.30:8080
159.65.140.115:443
119.193.124.41:7080
151.106.112.196:8080
144.91.78.55:443
82.223.21.224:8080
183.111.227.137:8080
1.234.2.232:8080
153.126.146.25:7080
79.137.35.198:8080
103.132.242.26:8080
51.91.76.89:8080
37.187.115.122:8080
131.100.24.231:80
203.114.109.124:443
1.234.21.73:7080
Dropper Extraction:
https://www.careofu.com/PHPExcel/sQ78BedribNJZbGYj/
https://cedeco.es/js/n74fS/
http://balticcontrolbd.com/cgi-bin/Gu0xno0kIssGJF8/
https://fikti.bem.gunadarma.ac.id/SDM/qNeMUe2RvxdvuRlf/
Malware family:
Emotet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4bcfa10a605a/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/4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06

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.

File information

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

Malspam

SilentBuilder

Excel file xls 4bcfa10a605aa27a638cd8508c88e8eec338b36068a6fcb21113130310c61d06

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/280051/

Comments