MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2. 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: 17


Intelligence 17 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2
SHA3-384 hash: f7cb5e397900ab54b602db3f546fa98de7f27d256963f12863e8b5d176437f710b31a343b417cf37406df203306a8010
SHA1 hash: 4cb3fb08d6a173e1526f48d1d4237c29f9a49f5f
MD5 hash: 666036634de5de5ff28819cec19299f3
humanhash: william-washington-jupiter-earth
File name:RFQ_PO_091232.doc
Download: download sample
Signature NanoCore
Create hunting rule
File size:845'680 bytes
First seen:2024-11-04 06:47:50 UTC
Last seen:Never
File type:Word file doc
MIME type:text/rtf
ssdeep 6144:HcwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAjjFkYwsQ+jGnThT:2
TLSH T1CE05792DD30B02598F624377AB5B1E5142BDBA6EF38551B0346C533933EAC3DA2252BD
Magika rtf
Reporter abuse_ch
Tags:CVE-2017-11882 doc NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
459
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ_PO_091232.doc
Verdict:
No threats detected
Analysis date:
2024-11-04 06:50:38 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/89e1a2cb-bb61-47c6-b12c-a0fbdb9a1da2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/msword
Has a screenshot:
False
Contains macros:
False
Detection(s):
Sanesecurity.Malware.29015.RtfHeur.Msg.UNOFFICIAL
Create hunting rule

Sanesecurity.Shelter.Malware.BadRtf.ObjUpd.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RoomService.20230808.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67286e2849e92a05dde2c5e0
Tags:
exploit office remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
Result
Verdict:
Malicious
File Type:
Fake RTF File
Link:
https://app.docguard.net/ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/67286e24cc1a4bf6fda06d57/reports/f0cc9293-cf13-4950-b896-3de1ef9f377c/overview
Verdict:
Malicious
Labled as:
CVE-2018-0802
Link:
https://www.hybrid-analysis.com/sample/ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2
Label:
Malicious
Suspicious Score:
10/10
Score Malicious:
1%
Score Benign:
0%
Link:
https://www.malware.ai/gui/files/?id=7a1a2168-6659-4ed9-a6b3-2bc130f70217
Result
Verdict:
MALICIOUS
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1548214
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Document exploit detected (process start blacklist hit)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: Equation Editor Network Connection
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: NanoCore
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Suspicious Binary In User Directory Spawned From Office Application
Sigma detected: Suspicious Microsoft Office Child Process
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1548214 Sample: RFQ_PO_091232.doc Startdate: 04/11/2024 Architecture: WINDOWS Score: 100 61 Multi AV Scanner detection for domain / URL 2->61 63 Suricata IDS alerts for network traffic 2->63 65 Found malware configuration 2->65 67 18 other signatures 2->67 9 WINWORD.EXE 291 18 2->9         started        11 taskeng.exe 1 2->11         started        13 smtpsvc.exe 2->13         started        process3 signatures4 16 EQNEDT32.EXE 11 9->16         started        21 EQNEDT32.EXE 9->21         started        23 smtpsvc.exe 3 11->23         started        83 Adds a directory exclusion to Windows Defender 13->83 85 Injects a PE file into a foreign processes 13->85 25 powershell.exe 13->25         started        27 smtpsvc.exe 13->27         started        process5 dnsIp6 57 87.120.84.38, 49163, 80 SHARCOM-ASBG Bulgaria 16->57 47 C:\Users\user\AppData\...\jequduhalcat.exe, PE32 16->47 dropped 49 C:\Users\user\...\ZOk7YvjlVmDJI9aJ[1].exe, PE32 16->49 dropped 69 Office equation editor establishes network connection 16->69 71 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 16->71 29 jequduhalcat.exe 1 8 16->29         started        73 Adds a directory exclusion to Windows Defender 23->73 75 Injects a PE file into a foreign processes 23->75 32 smtpsvc.exe 23->32         started        34 powershell.exe 23->34         started        file7 signatures8 process9 signatures10 87 Detected Nanocore Rat 29->87 89 Machine Learning detection for dropped file 29->89 91 Uses schtasks.exe or at.exe to add and modify task schedules 29->91 93 2 other signatures 29->93 36 jequduhalcat.exe 1 11 29->36         started        41 powershell.exe 4 29->41         started        process11 dnsIp12 59 66.63.187.113, 1664, 49164, 49165 ASN-QUADRANET-GLOBALUS United States 36->59 51 C:\Program Files (x86)\...\smtpsvc.exe, PE32 36->51 dropped 53 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 36->53 dropped 55 C:\Users\user\AppData\Local\...\tmpE2C1.tmp, XML 36->55 dropped 77 Detected Nanocore Rat 36->77 79 Hides that the sample has been downloaded from the Internet (zone.identifier) 36->79 43 schtasks.exe 36->43         started        45 schtasks.exe 36->45         started        81 Installs new ROOT certificates 41->81 file13 signatures14 process15
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-11-04 06:48:04 UTC
File Type:
Document
Extracted files:
3
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=74rbyjvgvurtuf463yslqflgjhroim4k7btvogkdulyrizil76ra._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
error
NanoCore
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore discovery evasion execution keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/241104-hkrw3swfje/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Command and Scripting Interpreter: PowerShell
Downloads MZ/PE file
NanoCore
Nanocore family
Malware Config
C2 Extraction:
66.63.187.113:1664
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fa597556-27a6-49c6-b965-45fab9071faf
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ff221c26a6ad233a179ede24b8156649e2e4338af867571943a2f114650bffa2

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:SUSP_INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embedding one of the object mostly observed in exploit (e.g. CVE-2017-11882) documents.
Reference:https://github.com/ditekshen/detection

File information

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

Comments