MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 52dc772f8a1fba5d23b2bd62f1762d49f180579d561bbb64d84f97f4c3a7b2cd. 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
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SHA256 hash: 52dc772f8a1fba5d23b2bd62f1762d49f180579d561bbb64d84f97f4c3a7b2cd
SHA3-384 hash: d0ed705fe7f5cdba28dbe624ed4fcf1257aa1def43235921646fa2e697007264bccfc67c45e6819c5061bff265ff4fd3
SHA1 hash: 42e6d1c6c78d3c7e201e49de22a18362b4ee5f71
MD5 hash: 7e7b8a3f709a06751a5aebf0727299f9
humanhash: one-pasta-cold-violet
File name:label.xlsm
Download: download sample
Signature NetWire
Create hunting rule
File size:19'125 bytes
First seen:2021-03-09 11:40:10 UTC
Last seen:2021-03-09 13:32:17 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 384:Hjrk0XUlM9z6pfMMB8zen/QqS3YXNNsFQay:Dr3XxWpfMa8Cn/tNXPuQR
TLSH FD82AF19E6A9383FC05B0CFEDA5944E0AA9D14490372BA54A6009CCF57F71CB66EC3F5
Reporter abuse_ch
Tags:DHL NetWire RAT xlsm


Avatar
abuse_ch
Malspam distributing NetWire:

HELO: dns.stemere.com
Sending IP: 185.69.60.145
From: DHL International Express <nancy@qair.com>
Subject: Shipment Delivery
Attachment: label.xlsm

NetWire RAT payload URL:
http://adelantosi.com/cp/label.exe

NetWire RAT C2:
goryhazel1.duckdns.org

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 11 sections in this file using oledump:

Section IDSection sizeSection name
A1422 bytesPROJECT
A262 bytesPROJECTwm
A3977 bytesVBA/Sheet1
A432509 bytesVBA/ThisWorkbook
A52650 bytesVBA/_VBA_PROJECT
A61243 bytesVBA/__SRP_0
A7135 bytesVBA/__SRP_1
A8436 bytesVBA/__SRP_2
A9163 bytesVBA/__SRP_3
A10523 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 :
375
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
label.xlsm
Verdict:
Malicious activity
Analysis date:
2021-03-09 11:41:44 UTC
Tags:
macros macros-on-open generated-doc loader trojan netwire
Link:
https://app.any.run/tasks/7c99ae45-1ecb-4e1a-90e3-51a670eae6ea

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
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/123161/
Detection(s):
Twinclams.EvilDoc.StringBuidlersEveryRoseHasItsThorn.20210308.UNOFFICIAL
Create hunting rule

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
Connection attempt
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Running batch commands by exploiting the app vulnerability
Result
Verdict:
Suspicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/52dc772f8a1fba5d23b2bd62f1762d49f180579d561bbb64d84f97f4c3a7b2cd/results/dashboard
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
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/632649
Signature
Antivirus detection for URL or domain
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: NetWire
Uses dynamic DNS services
Yara detected NetWire RAT
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
Gathering data
Threat name:
Script-Macro.Downloader.NetWired
Create hunting rule
Status:
Malicious
First seen:
2021-03-09 02:30:45 UTC
AV detection:
16 of 47 (34.04%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=klohol4kd65f2i5sxvrpc5rnjhyyav45kyn3wzgyj6l7jq5hwlgq._file
Result
Malware family:
netwire
Create hunting rule
Score:
  10/10
Tags:
family:netwire botnet macro rat stealer
Link:
https://tria.ge/reports/210309-2dcrv9g73s/
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/label.exe
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/52dc772f8a1fba5d23b2bd62f1762d49f180579d561bbb64d84f97f4c3a7b2cd

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
Create hunting rule
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:MALWARE_Win_NetWire
Create hunting rule
Author:ditekSHen
Description:Detects NetWire RAT
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria
Rule name:win_netwire_auto
Create hunting rule
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 52dc772f8a1fba5d23b2bd62f1762d49f180579d561bbb64d84f97f4c3a7b2cd

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1056652/
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/123161/

Comments