MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83b70b20d0cdb13e9c420723ba5f025827d21e0c051c6e64b5553a5c372c3374. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83b70b20d0cdb13e9c420723ba5f025827d21e0c051c6e64b5553a5c372c3374
SHA3-384 hash: 423ec459101bb651b0f425e9243efe1fb1f4bd318c2b5065b44ef01107c968603a084e72e3677d1f964822e8f2832def
SHA1 hash: 04a20b9bc282956d24a123605d743ee2e4a8b4cf
MD5 hash: 1619558c943283f7ad15c20d6634bf06
humanhash: mississippi-finch-white-ten
File name:RAHIM TRADING CO. FOR IMP. & EXP.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:461'824 bytes
First seen:2020-08-11 11:51:52 UTC
Last seen:2020-08-11 13:19:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:6EGclpQ0uVxLf/bZYLE557aJpUjjMjfWisJ:VQPVxjzN57FcLWDJ
Threatray 1'190 similar samples on MalwareBazaar
TLSH F6A4E019A2889F15D13EAB39C321156903F3D91BEB39EB6A7FC316D80E52B738751903
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: cloud-1bdf0b.managed-vps.net
Sending IP: 78.128.43.156
From: Martin Adel <info@brtglobalscrap.com>
Subject: Order Inquiry
Attachment: RAHIM TRADING CO. FOR IMP. EXP.IMG (contains "RAHIM TRADING CO. FOR IMP. & EXP.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
103
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/43317/
Detection(s):
SecuriteInfo.com.Fareit-FYE1619558C9432.9035.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/418686
Signature
.NET source code contains potential unpacker
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 dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 261669 Sample: RAHIM TRADING CO. FOR IMP. ... Startdate: 11/08/2020 Architecture: WINDOWS Score: 100 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Sigma detected: Scheduled temp file as task from temp location 2->52 54 9 other signatures 2->54 7 RAHIM TRADING CO. FOR IMP. & EXP.exe 7 2->7         started        11 dhcpmon.exe 5 2->11         started        process3 file4 30 C:\Users\user\AppData\...\yEuGIPhPQczcu.exe, PE32 7->30 dropped 32 C:\...\yEuGIPhPQczcu.exe:Zone.Identifier, ASCII 7->32 dropped 34 C:\Users\user\AppData\Local\...\tmp1893.tmp, XML 7->34 dropped 36 RAHIM TRADING CO. FOR IMP. & EXP.exe.log, ASCII 7->36 dropped 56 Injects a PE file into a foreign processes 7->56 13 RAHIM TRADING CO. FOR IMP. & EXP.exe 1 9 7->13         started        18 schtasks.exe 1 7->18         started        20 RAHIM TRADING CO. FOR IMP. & EXP.exe 7->20         started        22 schtasks.exe 1 11->22         started        24 dhcpmon.exe 2 11->24         started        signatures5 process6 dnsIp7 44 194.5.97.7, 21600, 49721, 49728 DANILENKODE Netherlands 13->44 46 127.0.0.1 unknown unknown 13->46 38 C:\Program Files (x86)\...\dhcpmon.exe, PE32 13->38 dropped 40 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 13->40 dropped 42 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 13->42 dropped 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->58 26 conhost.exe 18->26         started        28 conhost.exe 22->28         started        file8 signatures9 process10
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/83b70b20d0cdb13e9c420723ba5f025827d21e0c051c6e64b5553a5c372c3374/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-08-11 11:53:10 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qo3qwigqzwyt5hcca4r3uxyclat5ehqmauog4zfvku5fynzmgn2a._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
1d7bd4569c9c65e200191f37c4880af45b409a145ad9e883cd6699f76bcd5262
NanoCore
24d5ae18d6995c5afcb2ba03c90cbebde633c69c5f3a5f1fa157c1d4fcd84928
NanoCore
39734faf0a577140648e7a9c46220d612bd334a14c547e33a08af07e102fce30
NanoCore
439ed702b9700b4bd7ec8877db8d90820176cd183cb888c8be9b14267d3581cc
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4756d7695557a0c18e9f662cb1b17639cacf4dbc017ee733a62f1b9d0c37a950
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5abfb2c26d98dbe4aba173a7d3eb43d112ccb2bacaa2c874669128a13a98fe25
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83a4040f51f86dd5a5da772636d1a2271962a87b42994fdaa53438c24b142376
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c8c1e04edd5c422d065e27a3a73931d373de200419cd9ba649fdfadee686e5f2
NanoCore
cbe0ac62133d33b65e7f70a9b044e2e901fec3c0af0b76ac17ed1450bdb6beee
NanoCore
de4e7923d6209906899738f2091bd48d49e2bce9fbc5aebe7658444e8d040285
NanoCore
+ 1'180 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
persistence evasion trojan keylogger stealer spyware family:nanocore
Link:
https://tria.ge/reports/200811-cd7ld536j6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
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
NanoCore
Malware Config
C2 Extraction:
194.5.97.7:21600
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Farheyt
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/83b70b20d0cdb13e9c420723ba5f025827d21e0c051c6e64b5553a5c372c3374

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

img 042dace6bd0ee40c0d52fa570f04aa2b503991de88556a2e2c7ff49ee5210895

NanoCore

Executable exe 83b70b20d0cdb13e9c420723ba5f025827d21e0c051c6e64b5553a5c372c3374

(this sample)

  
Dropped by
MD5 3cb16fd54e1b255f014e2c4ed0806894
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/43317/
  
Dropped by
SHA256 042dace6bd0ee40c0d52fa570f04aa2b503991de88556a2e2c7ff49ee5210895

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