MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47
SHA3-384 hash: 67926e11265544e4d81ba07e110ddf7894643534713727a73bfd072079849d3ec37a7bc85dd581925fa5986cb471b43e
SHA1 hash: 155291ae16040e741e6f0d5c22e90ee44af23438
MD5 hash: 6a49589fb764ff36b90abd86a2abdbf6
humanhash: mars-fifteen-earth-princess
File name:Proforma Invoice347.doc
Download: download sample
Signature NanoCore
Create hunting rule
File size:727'458 bytes
First seen:2024-10-29 08:51:13 UTC
Last seen:2024-10-29 12:55:10 UTC
File type:Word file doc
MIME type:text/plain
ssdeep 6144:2wAYwAYwAYwAYwAYwAYwAYwAYwAYwAcZ0wTsFajJLHsnhSug4Nc8IlDpYqW:Qi
TLSH T17AF4672DD30B02598F6243779B5B1E5542BCBB6EF38051B0346C537933EAC39A2266BD
Magika rtf
Reporter abuse_ch
Tags:CVE-2017-11882 doc geo GRC NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
464
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Proforma Invoice347.doc
Verdict:
No threats detected
Analysis date:
2024-10-29 09:03:22 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/fd71970f-649e-4731-bb5b-3bf31e9ac762

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.27333.RtfHeur.BadVer.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.FakeRTF-1.UNOFFICIAL
Create hunting rule

Sanesecurity.Malware.26244.RtfHeur.UNOFFICIAL
Create hunting rule

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

MiscreantPunch.RTF.EvilRTF.CVE-2017-0199-Obfus.UNOFFICIAL
Create hunting rule

MiscreantPunch.EvilRTF.CommonLure.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.RTFFakeVersionWithObjUpdateUKSurfMix.20200514.UNOFFICIAL
Create hunting rule

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

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6720a23ba75e41aa6722ad88
Tags:
Exploit Keylog 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/790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47/results/dashboard
Behaviour
BlacklistAPI detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
embedequation exploit packed shellcode
Link:
https://www.filescan.io/uploads/6720a235e9959538ff3b7626/reports/22ed788d-e541-4642-b91f-53a108caae9b/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47
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/1544328
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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)
Initial sample is an obfuscated RTF file
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 dropped file
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: 1544328 Sample: Proforma Invoice347.doc Startdate: 29/10/2024 Architecture: WINDOWS Score: 100 79 Initial sample is an obfuscated RTF file 2->79 81 Suricata IDS alerts for network traffic 2->81 83 Found malware configuration 2->83 85 22 other signatures 2->85 9 WINWORD.EXE 291 20 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 jduerlkcat23021.exe 3 11->23         started        25 smtpsvc.exe 11->25         started        97 Adds a directory exclusion to Windows Defender 13->97 99 Injects a PE file into a foreign processes 13->99 27 powershell.exe 13->27         started        29 smtpsvc.exe 13->29         started        31 smtpsvc.exe 13->31         started        process5 dnsIp6 67 87.120.84.38, 49161, 80 SHARCOM-ASBG Bulgaria 16->67 57 C:\Users\user\AppData\...\jduerlkcat23021.exe, PE32 16->57 dropped 59 C:\Users\user\...\gseTC3ENkK2egL4[1].exe, PE32 16->59 dropped 87 Office equation editor establishes network connection 16->87 89 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 16->89 33 jduerlkcat23021.exe 3 16->33         started        91 Detected Nanocore Rat 23->91 93 Adds a directory exclusion to Windows Defender 23->93 95 Injects a PE file into a foreign processes 23->95 36 jduerlkcat23021.exe 23->36         started        38 powershell.exe 23->38         started        40 smtpsvc.exe 25->40         started        42 powershell.exe 25->42         started        file7 signatures8 process9 signatures10 71 Antivirus detection for dropped file 33->71 73 Multi AV Scanner detection for dropped file 33->73 75 Detected Nanocore Rat 33->75 77 4 other signatures 33->77 44 jduerlkcat23021.exe 1 12 33->44         started        49 powershell.exe 4 33->49         started        51 jduerlkcat23021.exe 33->51         started        process11 dnsIp12 69 66.63.187.113, 1664, 49162, 49163 ASN-QUADRANET-GLOBALUS United States 44->69 61 C:\Program Files (x86)\...\smtpsvc.exe, PE32 44->61 dropped 63 C:\Users\user\AppData\Roaming\...\run.dat, International 44->63 dropped 65 C:\Users\user\AppData\Local\...\tmp7697.tmp, XML 44->65 dropped 101 Detected Nanocore Rat 44->101 103 Hides that the sample has been downloaded from the Internet (zone.identifier) 44->103 53 schtasks.exe 44->53         started        55 schtasks.exe 44->55         started        105 Installs new ROOT certificates 49->105 file13 signatures14 process15
Score:
100%
Verdict:
Malware
File Type:
SCRIPT
Link:
https://malprob.io/report/790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2024-10-28 14:11:43 UTC
File Type:
Document
Extracted files:
3
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pebyonq7jb7gnjk7clpngr7lblhqbptkvzcxdnxbcc4mis4jxndq._file
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/241029-ksqp4avmfk/
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/8a977b0f-c835-4e35-8274-bb8e26cfab9f
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/790387361f487e66a55f12ded347eb0acf00be6aae4571b6e110b8c44b89bb47

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
Rule name:SUSP_RTF_Header_Anomaly_RID2F7F
Create hunting rule
Author:Florian Roth
Description:Detects malformed RTF header often used to trick mechanisms that check for a full RTF header
Reference:https://twitter.com/ItsReallyNick/status/975705759618158593

File information

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

Comments