MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 88ae975f4e74736af2a5a9afdb5fa9cdac99f6040495fa9b41b15116ca038edc. 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: 11


Maldoc score: 9


Intelligence 11 IOCs YARA 8 File information Comments

SHA256 hash: 88ae975f4e74736af2a5a9afdb5fa9cdac99f6040495fa9b41b15116ca038edc
SHA3-384 hash: e14a52a24cf7436a19b09552c09e763bc92f02b08ec4288b2b2a1dda062214e662b6fccf8fc581d0267024c4ba95d3c4
SHA1 hash: 179fff5189d833d805f4cfa8edd24fb7320a621b
MD5 hash: b5ccbececf177765cf326f65d0ca232e
humanhash: sodium-pluto-earth-connecticut
File name:Order Inquiry .xlsm
Download: download sample
Signature NetWire
File size:426'458 bytes
First seen:2021-03-08 07:59:52 UTC
Last seen:2021-03-08 09:57:41 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 12288:u49w8fyunGthwu8kxPthZugvq4jzjSGUugca:u49b7AhFxPthZnvL3tK
TLSH CA94232AD398BE9FC6F3E9BD8D448AD7631763DA3390B9B5785C4888065F12DC0B1E50
Reporter lowmal3
Tags:NetWire

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: 9
OLE dump

MalwareBazaar was able to identify 13 sections in this file using oledump:

Section IDSection sizeSection name
A1422 bytesPROJECT
A262 bytesPROJECTwm
A31150 bytesVBA/Sheet1
A433032 bytesVBA/ThisWorkbook
A52665 bytesVBA/_VBA_PROJECT
A61390 bytesVBA/__SRP_0
A7171 bytesVBA/__SRP_1
A8276 bytesVBA/__SRP_2
A966 bytesVBA/__SRP_3
A10436 bytesVBA/__SRP_4
A11163 bytesVBA/__SRP_5
A12523 bytesVBA/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
AutoExecWorkbook_OpenRuns when the Excel Workbook is opened
SuspiciousShellMay run an executable file or a system command
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousXorMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence


File Origin
# of uploads :
2
# of downloads :
381
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Order Inquiry .xlsm
Verdict:
Malicious activity
Analysis date:
2021-03-08 08:02:03 UTC
Tags:
macros macros-on-open loader rat netwire trojan

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.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a process with a hidden window
Launching a process
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Reading critical registry keys
Launching a service
Creating a file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Stealing user critical data
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Suspicious
File Type:
Excel File with Macro
Document image
Document image
Result
Verdict:
MALICIOUS
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...
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
NetWire
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Contains functionality to log keystrokes
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Internet Explorer form passwords
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA with many string operations indicating source code obfuscation
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
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: NetWire
Yara detected NetWire RAT
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 364451 Sample: Order Inquiry .xlsm Startdate: 08/03/2021 Architecture: WINDOWS Score: 100 38 Multi AV Scanner detection for submitted file 2->38 40 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->40 42 Yara detected Powershell download and execute 2->42 44 8 other signatures 2->44 9 EXCEL.EXE 57 14 2->9         started        process3 file4 32 C:\Users\user\Desktop\~$Order Inquiry .xlsm, data 9->32 dropped 56 Document exploit detected (process start blacklist hit) 9->56 13 cmd.exe 9->13         started        signatures5 process6 signatures7 58 Encrypted powershell cmdline option found 13->58 16 powershell.exe 12 7 13->16         started        process8 dnsIp9 34 adelantosi.com 213.136.74.10, 49167, 80 CONTABODE Germany 16->34 28 C:\Users\user\AppData\Roaming\sFCTE.exe, PE32 16->28 dropped 46 Powershell drops PE file 16->46 21 sFCTE.exe 11 16->21         started        file10 signatures11 process12 file13 30 C:\Users\user\AppData\Local\...\jd3hr.dll, PE32 21->30 dropped 48 Detected unpacking (changes PE section rights) 21->48 50 Detected unpacking (overwrites its own PE header) 21->50 52 Contains functionality to log keystrokes 21->52 54 4 other signatures 21->54 25 sFCTE.exe 2 21->25         started        signatures14 process15 dnsIp16 36 jahblessrtd4ever.home-webserver.de 31.220.4.216, 2797, 49168 HOSTHATCHUS Germany 25->36
Threat name:
Document-Word.Downloader.Heuristic
Status:
Malicious
First seen:
2021-03-08 08:00:10 UTC
AV detection:
8 of 47 (17.02%)
Threat level:
  2/5
Result
Malware family:
netwire
Score:
  10/10
Tags:
family:netwire botnet rat stealer
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
NSIS installer
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Loads dropped DLL
Blocklisted process makes network request
Executes dropped EXE
NetWire RAT payload
Netwire
Process spawned unexpected child process
Malware Config
Dropper Extraction:
http://adelantosi.com/cp/winiinit.exe
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Email_stealer_bin_mem
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Author:James_inthe_box
Description:IP and port combo
Rule name:MALWARE_Win_NetWire
Author:ditekSHen
Description:Detects NetWire RAT
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Author:James_inthe_box
Description:UAC bypass in files like avemaria
Rule name:win_netwire_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information


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

Malspam

NetWire

Excel file xlsm 88ae975f4e74736af2a5a9afdb5fa9cdac99f6040495fa9b41b15116ca038edc

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments