MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9c9b1c804d2665318c52fd60323a0500ea8be01916129a083d9cc4ea75538257. 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: 10


Maldoc score: 5


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9c9b1c804d2665318c52fd60323a0500ea8be01916129a083d9cc4ea75538257
SHA3-384 hash: 1f54e6539c8b12cabb79af603aee18af46fb5dd15a7e48630e58c16cda9dc8e7b2e5555e299acee41c048c32edcaa8a7
SHA1 hash: 036b20c06fa1405496e2f4c22b38e2133b0ed184
MD5 hash: fa75cf8bb1383a96b3d1e1aa7e5a3642
humanhash: one-foxtrot-autumn-london
File name:Nachricht 0813991552.xls
Download: download sample
Signature SilentBuilder
Create hunting rule
File size:96'768 bytes
First seen:2022-05-24 08:37:46 UTC
Last seen:2022-05-24 09:54:37 UTC
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 1536:JsKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgSUZx6FyxC3YGbl7BgWDFsqtNhWmDJdWZ:6Kpb8rGYrMPe3q7Q0XV5xtezEsi8/dgx
TLSH T1D5936C56B69EC85DFA558775849797A9F333FC205BAB09473208B3A47FF49A08A03207
TrID 80.2% (.XLS) Microsoft Excel sheet (32500/1/3)
19.7% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter JAMESWT_WT
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: 5
OLE dump

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

Section IDSection sizeSection name
14096 bytesDocumentSummaryInformation
24096 bytesSummaryInformation
386393 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
SuspiciousHex StringsHex-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 :
3
# of downloads :
331
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Nachricht 0813991552.xls
Verdict:
No threats detected
Analysis date:
2022-05-24 08:38:22 UTC
Tags:
macros
Link:
https://app.any.run/tasks/4f97832e-65a2-41e0-a7dd-b7a660dea952

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/273995/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Searching for the window
Query of malicious DNS domain
Sending a TCP request to an infection source by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File
Link:
https://app.docguard.net/9c9b1c804d2665318c52fd60323a0500ea8be01916129a083d9cc4ea75538257/results/dashboard
Payload URLs
URL
File name
https://bosny.com/aspnet_client/NGTx1FUzq/
WorkBook
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
80%
Tags:
emotet macros macros-on-open qbot regsvr32 regsvr32.exe
Link:
https://www.filescan.io/uploads/628c99a6054dcf0ecae6eb53/reports/e4ca8831-3bfb-4d54-8235-58db3c17fdf6/overview
Label:
Malicious
Suspicious Score:
5.4/10
Score Malicious:
55%
Score Benign:
45%
Link:
https://www.malware.ai/gui/files/?id=41641476-0122-418f-8ece-c5a763eeed07
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/9c9b1c804d2665318c52fd60323a0500ea8be01916129a083d9cc4ea75538257
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:
expl.evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1000472
Signature
Antivirus detection for URL or domain
Changes security center settings (notifications, updates, antivirus, firewall)
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Document exploit detected (UrlDownloadToFile)
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 domain / URL
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 signatures2 2 Behavior Graph ID: 632968 Sample: Nachricht 0813991552.xls Startdate: 24/05/2022 Architecture: WINDOWS Score: 100 71 Multi AV Scanner detection for domain / URL 2->71 73 Antivirus detection for URL or domain 2->73 75 Multi AV Scanner detection for submitted file 2->75 77 7 other signatures 2->77 8 EXCEL.EXE 27 40 2->8         started        13 svchost.exe 2->13         started        15 svchost.exe 1 1 2->15         started        17 9 other processes 2->17 process3 dnsIp4 59 bosny.com 203.151.59.20, 443, 49726 INET-TH-ASInternetThailandCompanyLimitedTH Thailand 8->59 61 bulldogironworksllc.com 162.214.98.126, 443, 49754 UNIFIEDLAYER-AS-1US United States 8->61 63 www.berekethaber.com 178.211.45.226, 443, 49753 INETLTDTR Turkey 8->63 45 C:\Users\user\AppData\...\TXFnKVc[1].dll, PE32+ 8->45 dropped 47 C:\Users\user\AppData\Local\...\Jer[1].dll, PE32+ 8->47 dropped 49 C:\Users\user\AppData\Local\...\Fx6[1].dll, PE32+ 8->49 dropped 51 4 other malicious files 8->51 dropped 81 Document exploit detected (creates forbidden files) 8->81 83 Document exploit detected (UrlDownloadToFile) 8->83 19 regsvr32.exe 8->19         started        21 regsvr32.exe 8->21         started        23 regsvr32.exe 8->23         started        85 Changes security center settings (notifications, updates, antivirus, firewall) 13->85 25 MpCmdRun.exe 13->25         started        65 127.0.0.1 unknown unknown 15->65 67 192.168.2.1 unknown unknown 17->67 file5 signatures6 process7 process8 27 regsvr32.exe 5 19->27         started        31 regsvr32.exe 5 21->31         started        33 regsvr32.exe 5 23->33         started        35 conhost.exe 25->35         started        file9 53 C:\Windows\System32\...\FYGZICNXwI.dll (copy), PE32+ 27->53 dropped 87 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->87 37 regsvr32.exe 27->37         started        55 C:\Windows\...\MrBxLuTpRRHdGf.dll (copy), PE32+ 31->55 dropped 40 regsvr32.exe 31->40         started        57 C:\Windows\...\fzLGiKjMCfkDog.dll (copy), PE32+ 33->57 dropped 43 regsvr32.exe 33->43         started        signatures10 process11 dnsIp12 79 System process connects to network (likely due to code injection or exploit) 37->79 69 165.22.73.229, 49762, 49765, 49766 DIGITALOCEAN-ASNUS United States 40->69 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9c9b1c804d2665318c52fd60323a0500ea8be01916129a083d9cc4ea75538257/
Threat name:
Document-Excel.Trojan.Abracadabra
Create hunting rule
Status:
Malicious
First seen:
2022-05-24 08:38:05 UTC
File Type:
Document
Extracted files:
11
AV detection:
11 of 41 (26.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tsnrzacnezstddcs7vqdeoqfadvixyazcyjjucb5ttcou5ktqjlq._file
Result
Malware family:
emotet
Create hunting rule
Score:
  10/10
Tags:
family:emotet botnet:epoch5 banker macro suricata trojan xlm
Link:
https://tria.ge/reports/220524-kjp27sgda6/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
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:
194.9.172.107:8080
66.42.57.149:443
165.22.73.229:8080
202.29.239.162:443
76.189.152.228:1645
59.185.164.123:8382
115.19.43.159:30377
104.248.225.227:8080
54.38.242.185:443
103.133.214.242:8080
78.47.204.80:443
210.57.209.142:8080
103.41.204.169:8080
118.98.72.86:443
88.217.172.165:8080
87.106.97.83:7080
85.25.120.45:8080
195.77.239.39:8080
37.44.244.177:8080
36.67.23.59:443
93.41.142.108:30345
42.6.66.255:39545
160.16.143.191:7080
38.217.125.207:49663
54.38.143.246:7080
159.69.237.188:443
68.183.93.250:443
54.37.228.122:443
190.90.233.66:443
37.59.209.141:8080
29.146.139.51:30005
18.37.240.161:6409
178.62.112.199:8080
59.148.253.194:443
196.44.98.190:8080
79.235.8.209:58224
202.28.34.99:8080
78.46.73.125:443
51.68.141.164:8080
207.148.81.119:8080
93.104.209.107:8080
185.148.168.220:8080
100.21.231.107:63582
103.85.95.4:8080
62.171.178.147:8080
175.126.176.79:8080
134.122.119.23:8080
202.134.4.210:7080
116.124.128.206:8080
45.71.195.104:8080
110.235.83.107:7080
103.56.149.105:8080
68.183.91.111:8080
119.44.217.160:39748
5.56.132.177:8080
195.154.146.35:443
217.182.143.207:443
54.37.106.167:8080
85.214.67.203:8080
90.63.125.244:30283
188.225.32.231:4143
103.42.58.120:7080
139.196.72.155:8080
Dropper Extraction:
https://bosny.com/aspnet_client/NGTx1FUzq/
https://www.berekethaber.com/hatax/c7crGdejW4380ORuxqR/
https://bulldogironworksllc.com/temp/BBh5HHpei/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9c9b1c804d26/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.40
Link:
https://yomi.yoroi.company/submissions/9c9b1c804d2665318c52fd60323a0500ea8be01916129a083d9cc4ea75538257

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:Qbot
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule to Detect Qbot
Rule name:SUSP_Excel4Macro_AutoOpen
Create hunting rule
Author:John Lambert @JohnLaTwC
Description:Detects Excel4 macro use with auto open / close

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/273995/

Comments