MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a85f88d35b117dc6b63fc3ab6f9e6ca21a605032ddaf343f1ad6b32b86aa344e. 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: 11


Intelligence 11 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a85f88d35b117dc6b63fc3ab6f9e6ca21a605032ddaf343f1ad6b32b86aa344e
SHA3-384 hash: f2c0b6abf5948ceb84d6cdefc7d3a5fa5bab49d19db3bd6a326e5b49679a89a4a2bbadfbf7a0903d3c792cf2b0f456d6
SHA1 hash: 533bd716ec330abc7154f999d85ccacf2fc5896e
MD5 hash: 837f6180b2819e85aa7dc742c2bd2203
humanhash: high-thirteen-idaho-alanine
File name:1610202037463,pdf.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:972'800 bytes
First seen:2020-10-16 17:47:18 UTC
Last seen:2020-10-16 19:22:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:VnsSEP56pRXHDHekgYuZPQMui4NU+SLUVFTFDihAv5A:OSYSRXHDHekgYePQji4uoU
Threatray 1'154 similar samples on MalwareBazaar
TLSH 2F251898325072DFC46BD8B2EE9C5C64FB9178AB431BC20791532A9DDA0E997CF141F2
Reporter abuse_ch
Tags:exe NanoCore RAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
101
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/72227/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.24652.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a process with a hidden window
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/494065
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 299489 Sample: 1610202037463,pdf.exe Startdate: 16/10/2020 Architecture: WINDOWS Score: 100 40 billionaire.ddns.net 2->40 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for dropped file 2->50 52 Sigma detected: Scheduled temp file as task from temp location 2->52 54 11 other signatures 2->54 9 1610202037463,pdf.exe 7 2->9         started        13 MSBuild.exe 4 2->13         started        signatures3 process4 file5 32 C:\Users\user\AppData\Roaming\eBmpLiPBn.exe, PE32 9->32 dropped 34 C:\Users\...\eBmpLiPBn.exe:Zone.Identifier, ASCII 9->34 dropped 36 C:\Users\user\AppData\Local\...\tmpBA0C.tmp, XML 9->36 dropped 38 C:\Users\user\...\1610202037463,pdf.exe.log, ASCII 9->38 dropped 56 Writes to foreign memory regions 9->56 58 Allocates memory in foreign processes 9->58 60 Injects a PE file into a foreign processes 9->60 15 MSBuild.exe 10 9->15         started        20 schtasks.exe 1 9->20         started        22 conhost.exe 13->22         started        signatures6 process7 dnsIp8 42 billionaire.ddns.net 91.193.75.246, 3734, 49732, 49733 DAVID_CRAIGGG Serbia 15->42 44 192.168.2.1 unknown unknown 15->44 30 C:\Users\user\AppData\Roaming\...\run.dat, data 15->30 dropped 46 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->46 24 schtasks.exe 1 15->24         started        26 conhost.exe 20->26         started        file9 signatures10 process11 process12 28 conhost.exe 24->28         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a85f88d35b117dc6b63fc3ab6f9e6ca21a605032ddaf343f1ad6b32b86aa344e/
Threat name:
ByteCode-MSIL.Spyware.Stelega
Create hunting rule
Status:
Malicious
First seen:
2020-10-16 15:15:24 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vbpyru23cf64nnr7yovw7htmuingaubs3wxtipy222zsxbvkgrha._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
093313195ab55c462e616e41f5b20e0f876d69e1941d34cd05302c82d8eb20e7
NanoCore
15f16edea0ca4f3b0a43c1b4e232a30294bd25c3f4971cdaccabcfda45dfa9c9
NanoCore
17976b00ac98edbfed8a513caeb5d757c334ed3e1f94712212b5b7a4ac1f226e
NanoCore
2313dde5b84de43d82c693ccd65fdc2efd1321cc0ea3d8c901094805935eb0f1
NanoCore
4132de9c0b4c5c604bed2261b999848573b44a5208482a4847c9b6b2f2ff729b
NanoCore
430596618928471c2bb2df11155686033c916418c1792875f329ae8156debfaa
NanoCore
4d0aea3c86fee5ae6722f98e65e622017f16725ede141d7ee95c20262080c61a
NanoCore
8df1564ebde006b74b51b3f685836ebc5b34626edb0cbe5ec8b825799e1774dd
NanoCore
98cfc2f76ee8cefd9aa0b9be4c317800223f93ffb6e63577e8a9466693585515
NanoCore
b47fd439f5f744bb6e3dead9204f558d2536dd82ceab7d1df41dbbe184fa9c2f
NanoCore
+ 1'144 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
keylogger trojan stealer spyware family:nanocore
Link:
https://tria.ge/reports/201016-x3l7qvybpa/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
NanoCore
Malware Config
C2 Extraction:
billionaire.ddns.net:3734
Unpacked files
SH256 hash:
a85f88d35b117dc6b63fc3ab6f9e6ca21a605032ddaf343f1ad6b32b86aa344e
MD5 hash:
837f6180b2819e85aa7dc742c2bd2203
SHA1 hash:
533bd716ec330abc7154f999d85ccacf2fc5896e
Link:
https://www.unpac.me/results/30f60cf3-0b5b-4127-9788-0111ec4fd7af/
SH256 hash:
7add54c57ebead1ced0fdd86f1e8fbfb34d9c3f42ed0a8f1dd01c2d7fbdd22df
MD5 hash:
c92b6d01725e94682d4d1f8722d08f90
SHA1 hash:
22fedb39b80a6909343bcdf5ba846e8435841155
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/30f60cf3-0b5b-4127-9788-0111ec4fd7af/
Parent samples :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 hash:
e42e333435d9de305369823a0729ee095b1035a07025390068bd40f4272ec0e2
MD5 hash:
1003d7f6048275d17d03b68eca08fa2a
SHA1 hash:
95a52ca4e6238d4767f98956958361d5a9f79cdd
Link:
https://www.unpac.me/results/30f60cf3-0b5b-4127-9788-0111ec4fd7af/
SH256 hash:
bac5797bde4b2810766a40d95bcdb825ac5b395fcbadd139daa19a44a6cdc049
MD5 hash:
a92cc1f6e0a2742350dfda6726db14c0
SHA1 hash:
e5404e3ed46498deb8ad8966a774540c2b8e9c1e
Link:
https://www.unpac.me/results/30f60cf3-0b5b-4127-9788-0111ec4fd7af/
SH256 hash:
5824d5b17c6e1923ddc5b8c04a83b1c5aab1cec1e5bbf0833b988b681af03750
MD5 hash:
f0b4919c19e7f6b61b73023ef1a1b121
SHA1 hash:
fdc5534a0e8ea60ee84c7bc10bafa74812f5ef16
Link:
https://www.unpac.me/results/30f60cf3-0b5b-4127-9788-0111ec4fd7af/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a85f88d35b117dc6b63fc3ab6f9e6ca21a605032ddaf343f1ad6b32b86aa344e

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:ach_NanoCore
Create hunting rule
Author:abuse.ch
Rule name:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Gen_2
Create hunting rule
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:win_nanocore_w0
Create hunting rule
Author: Kevin Breen <kevin@techanarchy.net>

File information

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

Malspam

NanoCore

Executable exe a85f88d35b117dc6b63fc3ab6f9e6ca21a605032ddaf343f1ad6b32b86aa344e

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/72227/

Comments