MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7267fd908bf6fe78b23ab81d81a140a3a4e991215486e7c49a4f4946b9180f58. 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


NanoCore


Vendor detections: 12


Intelligence 12 IOCs 1 YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7267fd908bf6fe78b23ab81d81a140a3a4e991215486e7c49a4f4946b9180f58
SHA3-384 hash: 7fa074e8ecbcf879e090184add5ccb14aece69a5174d6195bd69876b2dd207d7440fcfefc6b1fb6520676f6c44c16ebe
SHA1 hash: 32f78cda5d0b953a7658ae9a3a9efe6398f07525
MD5 hash: 71a39f7a26b33084d9ad28f7b60366a5
humanhash: march-video-aspen-connecticut
File name:71a39f7a26b33084d9ad28f7b60366a5.xlsx
Download: download sample
Signature NanoCore
Create hunting rule
File size:634'806 bytes
First seen:2021-12-11 19:11:05 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 12288:3V3jIX4Q8lej3M1qrPbIwp+hurcQWNLktt/j7Jj1IgrC8LaIcpP1zmxic:F3cI2j3M8zJg6FBlrkPxyN
TLSH T199D423D0ABE74AF6C38CAC77099111D12599E724B1A329D9C2FC370D7EB7CAD3846650
Reporter abuse_ch
Tags:CVE-2017-11882 NanoCore RAT xlsx


Avatar
abuse_ch
NanoCore C2:
2.56.57.143:7712

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
2.56.57.143:7712 https://threatfox.abuse.ch/ioc/274544/

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 dump

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

Section IDSection sizeSection name
A1893076 bytesoLe10NatIve
A20 bytespI2buZngl1hU61tb0wbO8IV

Intelligence

File Origin
# of uploads :
1
# of downloads :
351
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
71a39f7a26b33084d9ad28f7b60366a5.xlsx
Verdict:
Malicious activity
Analysis date:
2021-12-11 19:12:29 UTC
Tags:
exploit CVE-2017-11882 loader trojan nanocore rat
Link:
https://app.any.run/tasks/0f64bbc1-0b54-4ef5-8d63-97be6d525330

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/213364/
Detection(s):
Sanesecurity.Malware.27429.XmlHeur.Autoload.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Malware.XML.Autoload-1.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.BadMetaSecondChances.20210902.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.EQAndMisCasedOleNativeWasTheCaseThatTheyGaveMe.20200215.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.EQEditorFBShellzLetMeBlowYourMind.20210218.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Searching for synchronization primitives
Launching a process
Creating a file in the %AppData% directory
Сreating synchronization primitives
Sending an HTTP GET request
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Link:
https://app.docguard.net/7267fd908bf6fe78b23ab81d81a140a3a4e991215486e7c49a4f4946b9180f58/results/dashboard
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
CVE-2017-11882 embedequation exploit shellcode stripped
Link:
https://www.filescan.io/uploads/61b4f804fa72c81b5b18cc5c/reports/4d94b05d-5c58-43eb-be63-57234995cce7/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/7267fd908bf6fe78b23ab81d81a140a3a4e991215486e7c49a4f4946b9180f58
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/905841
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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)
Office equation editor drops PE file
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Droppers Exploiting CVE-2017-11882
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: NanoCore
Sigma detected: Suspicius Add Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 538319 Sample: Mj7iuWXSYN.xlsx Startdate: 11/12/2021 Architecture: WINDOWS Score: 100 54 godisgood1.hopto.org 2->54 60 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->60 62 Multi AV Scanner detection for domain / URL 2->62 64 Found malware configuration 2->64 66 19 other signatures 2->66 9 EQNEDT32.EXE 1 2->9         started        14 taskeng.exe 1 2->14         started        16 smtpsvc.exe 2->16         started        18 EXCEL.EXE 53 12 2->18         started        signatures3 process4 dnsIp5 56 2.56.57.123, 49165, 80 GBTCLOUDUS Netherlands 9->56 44 C:\Users\user\AppData\Roaming\CJH.exe, PE32 9->44 dropped 74 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 9->74 20 CJH.exe 1 5 9->20         started        23 CJH.exe 14->23         started        25 smtpsvc.exe 14->25         started        76 Injects a PE file into a foreign processes 16->76 27 smtpsvc.exe 16->27         started        46 C:\Users\user\Desktop\~$Mj7iuWXSYN.xlsx, data 18->46 dropped file6 signatures7 process8 signatures9 68 Multi AV Scanner detection for dropped file 20->68 70 Uses schtasks.exe or at.exe to add and modify task schedules 20->70 72 Injects a PE file into a foreign processes 20->72 29 CJH.exe 1 13 20->29         started        34 CJH.exe 20->34         started        36 CJH.exe 23->36         started        38 smtpsvc.exe 25->38         started        process10 dnsIp11 58 godisgood1.hopto.org 2.56.57.143, 49166, 49167, 49168 GBTCLOUDUS Netherlands 29->58 48 C:\Program Files (x86)\...\smtpsvc.exe, PE32 29->48 dropped 50 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 29->50 dropped 52 C:\Users\user\AppData\Local\...\tmpBAD6.tmp, XML 29->52 dropped 78 Hides that the sample has been downloaded from the Internet (zone.identifier) 29->78 40 schtasks.exe 29->40         started        42 schtasks.exe 29->42         started        file12 signatures13 process14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7267fd908bf6fe78b23ab81d81a140a3a4e991215486e7c49a4f4946b9180f58/
Threat name:
Document-Office.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2021-12-10 11:45:11 UTC
File Type:
Document
Extracted files:
21
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ojt73eel637hrmr2xaoydikauosotejbksdopre2j5eunoiyb5ma._file
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/211211-xwg9cabeh4/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
godisgood1.hopto.org:7712
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/7267fd908bf6fe78b23ab81d81a140a3a4e991215486e7c49a4f4946b9180f58

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/213364/

Comments