MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments 2
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5
SHA3-384 hash: c63229c97b4aa35cad5df05efc6992a0a2b80b513c2321fa7019c066f6bd2490d2cf60d4f3be0135ba07e1483d57a1ed
SHA1 hash: 79fc5ee46c38b11ec8f3087cf31949878a9f535c
MD5 hash: f9cf07f5d64fdc8b5f4d7de79159ef7a
humanhash: saturn-twenty-crazy-wyoming
File name:ΦΟΡΜΑ ΑΙΤΗΣΗΣ ΜΕΤΑΒΙΒΑΣΗΣ.doc
Download: download sample
Signature NanoCore
Create hunting rule
File size:132'756 bytes
First seen:2023-11-23 13:03:27 UTC
Last seen:Never
File type:Word file doc
MIME type:text/plain
ssdeep 768:mwAbZSibMX9gRWjwhbBAK79l65+qz8UHLzPENhloTf:mwAlRVBAw9lRqz8OPENhloTf
TLSH T1AED3786DD34B01A98F624376AB271E4942FCBA7EF38152B1306C837533EAC3955252BD
Reporter Xev
Tags:AgentTesla Andromeda CVE-2017-11882 doc Downloader Exploit.MSOffice NanoCore rtf

Intelligence

File Origin
# of uploads :
1
# of downloads :
228
Origin country :
GR GR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
malicious.eml.msg
Verdict:
Malicious activity
Analysis date:
2023-11-22 13:28:48 UTC
Tags:
exploit cve-2017-11882 loader
Link:
https://app.any.run/tasks/21a2f0f4-da1a-4875-958e-6df2276824c4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Spam-473.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Searching for synchronization primitives
Launching a process
Creating a window
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a file
Query of malicious DNS domain
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Sending an HTTP GET request to an infection source by exploiting the app vulnerability
Creating a process from a recently created file
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5
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/1347250
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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)
Initial sample is an obfuscated RTF file
Injects a PE file into a foreign processes
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 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 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: File Dropped By EQNEDT32EXE
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert 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: 1347250 Sample: 97#U03a3.doc Startdate: 24/11/2023 Architecture: WINDOWS Score: 100 59 Initial sample is an obfuscated RTF file 2->59 61 Snort IDS alert for network traffic 2->61 63 Multi AV Scanner detection for domain / URL 2->63 65 19 other signatures 2->65 8 EQNEDT32.EXE 11 2->8         started        13 taskeng.exe 1 2->13         started        15 smtpsvc.exe 2->15         started        17 2 other processes 2->17 process3 dnsIp4 53 zang1.almashreaq.top 172.67.221.26, 49161, 80 CLOUDFLARENETUS United States 8->53 43 C:\Users\user\AppData\...\plugman67890.exe, PE32 8->43 dropped 45 C:\Users\user\AppData\...\plugmanzx[1].exe, PE32 8->45 dropped 77 Office equation editor establishes network connection 8->77 79 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 8->79 19 plugman67890.exe 1 7 8->19         started        22 plugman67890.exe 2 13->22         started        24 smtpsvc.exe 2 13->24         started        81 Injects a PE file into a foreign processes 15->81 26 smtpsvc.exe 15->26         started        file5 signatures6 process7 signatures8 67 Antivirus detection for dropped file 19->67 69 Multi AV Scanner detection for dropped file 19->69 71 Detected Nanocore Rat 19->71 75 2 other signatures 19->75 28 plugman67890.exe 1 12 19->28         started        73 Injects a PE file into a foreign processes 22->73 33 plugman67890.exe 22->33         started        35 plugman67890.exe 22->35         started        37 smtpsvc.exe 2 24->37         started        process9 dnsIp10 55 6coinc.zapto.org 91.92.244.198, 49166, 49167, 49168 THEZONEBG Bulgaria 28->55 57 127.0.0.1 unknown unknown 28->57 47 C:\Program Files (x86)\...\smtpsvc.exe, PE32 28->47 dropped 49 C:\Users\user\AppData\Roaming\...\run.dat, data 28->49 dropped 51 C:\Users\user\AppData\Local\...\tmp7E16.tmp, XML 28->51 dropped 83 Detected Nanocore Rat 28->83 85 Hides that the sample has been downloaded from the Internet (zone.identifier) 28->85 39 schtasks.exe 28->39         started        41 schtasks.exe 28->41         started        file11 signatures12 process13
Score:
99%
Verdict:
Malware
File Type:
ASCII
Link:
https://malprob.io/report/b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5/
Threat name:
Document-RTF.Exploit.CVE-2017-11882
Create hunting rule
Status:
Malicious
First seen:
2023-11-22 05:47:50 UTC
File Type:
Document
Extracted files:
5
AV detection:
13 of 23 (56.52%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wmsajqypicmunwybbxoqeozo73fvln7zhrdj2gxwnppc4nddexsq._file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.96
Link:
https://yomi.yoroi.company/submissions/b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5

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:INDICATOR_RTF_MalVer_Objects
Create hunting rule
Author:ditekSHen
Description:Detects RTF documents with non-standard version and embeding one of the object mostly observed in exploit documents.
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.

Malspam

NanoCore

Word file doc b32404c30f409946db010ddd023b2efecb55b7f93c469d1af66bde2e346325e5

(this sample)

NanoCore

Executable exe 496bbeff36c20e17f2967fb96527b48ab329d1cac12347fdbd8692c46dd36786

  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 496bbeff36c20e17f2967fb96527b48ab329d1cac12347fdbd8692c46dd36786
  
Dropping
MD5 980746bbc209911ddbaaff46d856a78f

Comments


Avatar
commented on 2023-11-23 13:38:42 UTC

C2: 6coinc.zapto.org

Avatar
commented on 2023-11-23 13:38:21 UTC

NanoCore payload url: http://zang1.almashreaq.top/_errorpages/plugmanzx.exe