MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c8a3afbe993a8c462856e72256e1ec0a251777a5d5bc6cac978e4349f8cb9ac2. 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


NetWire


Vendor detections: 16


Maldoc score: 14


Intelligence 16 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c8a3afbe993a8c462856e72256e1ec0a251777a5d5bc6cac978e4349f8cb9ac2
SHA3-384 hash: 915a7b67640dcc01306c88c66238583134d1264604e8481ac1deee554e15da7d01c0ee3b5c19d6ae8d371abd5b023bcf
SHA1 hash: 0683bc3b43f8d2d5bd371afaa91a572a686a2605
MD5 hash: 4801317e331435ac031fe4d5bda0e668
humanhash: beer-vegan-floor-leopard
File name:SecuriteInfo.com.VBA.Amphitryon.1704.16009.3666
Download: download sample
Signature NetWire
Create hunting rule
File size:104'960 bytes
First seen:2022-09-21 12:11:17 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 3072:7k3hOdsylKlgryzc4bNhZFGzE+cL2knAr9pWkmanzr0O8pFKdshErlsDB:7k3hOdsylKlgryzc4bNhZF+E+W2knArA
TLSH T102A3D653AD448A83E51843B9BC934EEC2A197E08ED8277FF21657FCA3E346514D4B12B
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter SecuriteInfoCom
Tags:NetWire 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: 14
OLE dump

MalwareBazaar was able to identify 15 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3224 bytesSummaryInformation
483978 bytesWorkbook
5458 bytes_VBA_PROJECT_CUR/PROJECT
686 bytes_VBA_PROJECT_CUR/PROJECTwm
76309 bytes_VBA_PROJECT_CUR/VBA/Module1
8977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
9985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
102879 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
111181 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
1287 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
13114 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
14223 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
15568 bytes_VBA_PROJECT_CUR/VBA/dir
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
AutoExecAutoOpenRuns when the Word document is opened
AutoExecAuto_OpenRuns when the Excel Workbook is opened
IOCWinUpdate.exeExecutable file name
IOCcertutil.exeExecutable file name
SuspiciousShellMay run an executable file or a system command
SuspiciousWScript.ShellMay run an executable file or a system command
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
315
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
ta505
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.VBA.Amphitryon.1704.16009.3666
Verdict:
Malicious activity
Analysis date:
2022-09-21 12:12:57 UTC
Tags:
macros macros-on-open ta505 maldoc-33 loader
Link:
https://app.any.run/tasks/bb16706f-6588-4010-9606-90b99c3fadb5

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/312049/
Detection(s):
TwinWave.EvilDoc.TakeMeHomeTonight.20210923.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CertUtilFadeAway.20220102.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.VBA.Amphitryon.1704.16009.3666.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.OutRunThis.20220121.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Sending an HTTP GET request
Creating a file in the %temp% directory
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/c8a3afbe993a8c462856e72256e1ec0a251777a5d5bc6cac978e4349f8cb9ac2/results/dashboard
Behaviour
BlacklistAPI detected
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
certutil certutil.exe greyware macros macros-on-open setupapi.dll shdocvw.dll shell32.dll
Link:
https://www.filescan.io/uploads/632affd3b333b2ec6b3e27c7/reports/ec9cb820-1a50-4c9c-83b6-9bee50488e85/overview
Label:
Malicious
Suspicious Score:
8.2/10
Score Malicious:
82%
Score Benign:
18%
Link:
https://www.malware.ai/gui/files/?id=eeb124c8-a0ef-4c55-a2d8-c3a1feffea9b
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/c8a3afbe993a8c462856e72256e1ec0a251777a5d5bc6cac978e4349f8cb9ac2
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
InQuest Machine Learning
An InQuest machine-learning model classified this macro as potentially malicious.
Result
Threat name:
NetWire
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1074581
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (process start blacklist hit)
Drops PE files with a suspicious file extension
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
System process connects to network (likely due to code injection or exploit)
Yara detected AntiVM autoit script
Yara detected NetWire RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 707123 Sample: SecuriteInfo.com.VBA.Amphit... Startdate: 21/09/2022 Architecture: WINDOWS Score: 100 74 Multi AV Scanner detection for domain / URL 2->74 76 Malicious sample detected (through community Yara rule) 2->76 78 Antivirus detection for URL or domain 2->78 80 11 other signatures 2->80 14 EXCEL.EXE 7 11 2->14         started        17 voggchu.pif 2->17         started        process3 file4 68 ~$SecuriteInfo.com...704.16009.3666.xlsx, data 14->68 dropped 70 SecuriteInfo.com.V...1704.16009.3666.xls, Composite 14->70 dropped 19 WinUpdate.exe 75 14->19         started        23 certutil.exe 13 14->23         started        26 wscript.exe 17->26         started        process5 dnsIp6 60 C:\Users\user\AppData\Roaming\...\voggchu.pif, PE32 19->60 dropped 82 Multi AV Scanner detection for dropped file 19->82 84 Drops PE files with a suspicious file extension 19->84 28 voggchu.pif 1 3 19->28         started        72 192.3.194.246, 49171, 49172, 80 AS-COLOCROSSINGUS United States 23->72 62 C:\Users\user\AppData\Local\...\WinUpdate.exe, PE32 23->62 dropped 64 C:\Users\...\BE18B88D396F00C8DED49027204CB395, PE32 23->64 dropped 86 System process connects to network (likely due to code injection or exploit) 23->86 31 voggchu.pif 26->31         started        file7 signatures8 process9 signatures10 88 Multi AV Scanner detection for dropped file 28->88 33 wscript.exe 1 28->33         started        35 wscript.exe 31->35         started        process11 process12 37 voggchu.pif 1 33->37         started        40 voggchu.pif 35->40         started        file13 66 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 37->66 dropped 42 wscript.exe 1 37->42         started        44 wscript.exe 40->44         started        process14 process15 46 voggchu.pif 42->46         started        48 voggchu.pif 44->48         started        process16 50 wscript.exe 46->50         started        52 wscript.exe 48->52         started        process17 54 voggchu.pif 50->54         started        56 voggchu.pif 52->56         started        process18 58 wscript.exe 54->58         started       
Detection:
netwire
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c8a3afbe993a8c462856e72256e1ec0a251777a5d5bc6cac978e4349f8cb9ac2/
Threat name:
Script-Macro.Trojan.Amphitryon
Create hunting rule
Status:
Malicious
First seen:
2022-09-21 09:13:03 UTC
File Type:
Document
Extracted files:
20
AV detection:
11 of 25 (44.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zcr27puzhkgemkcw44rfnypmbisro55f2w6gzlexrzbut6gltlba._file
Result
Malware family:
netwire
Create hunting rule
Score:
  10/10
Tags:
family:netwire botnet macro macro_on_action persistence rat stealer
Link:
https://tria.ge/reports/220921-pc6tlabggq/
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
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Downloads MZ/PE file
Executes dropped EXE
NetWire RAT payload
Netwire
Process spawned unexpected child process
Malware Config
C2 Extraction:
37.0.14.206:3384
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/8bb51b54-b455-46c5-973c-7e9a2a00c568
Malware family:
Netwire
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c8a3afbe993a/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/c8a3afbe993a8c462856e72256e1ec0a251777a5d5bc6cac978e4349f8cb9ac2

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:RansomwareTest2
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest3
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest4
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules

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/312049/

Comments