MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e58365faedd335953c8f41dc5d7e9056c6db3924628dcf977ad7e556410d558a. 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: 6


Intelligence 6 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e58365faedd335953c8f41dc5d7e9056c6db3924628dcf977ad7e556410d558a
SHA3-384 hash: ee7c07a5b4cb708a8c8b57cb2ed0f22e004fb31f7fc462105b61a8d6ff4752b65cfaf34859650123a325859dfd161edd
SHA1 hash: 43a41c7f76bc7180e1873a1159322e1f4c8ffbb5
MD5 hash: aeddfd4a3fc6d3c61ef6b59064558fac
humanhash: island-snake-quiet-mississippi
File name:SOW_Change Emergency Light.xlxs.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:855'552 bytes
First seen:2020-10-22 07:03:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:oQXuR9wkQQ3ERVT973av9yqh1XrrWvsbCSe++sdf0lNzmQ9EROZ8mOgzm50lQ5VH:JXuk3dJ3wk86iChmC/OP5jkRM
TLSH FF058DD87254B2EFC897C4729E681E64AA516CBA935B4203E017319C9E7F987CF340F2
Reporter abuse_ch
Tags:exe NanoCore Outlook RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: APC01-HK2-obe.outbound.protection.outlook.com
Sending IP: 40.92.255.85
From: Boontavee Charoenchai <btvcc@hotmail.com>
Subject: Notification of no receipt of goods and Invoice 11 - 30 Oct 2020
Attachment: SOW_Change Emergency Light.xlxs.zip (contains "SOW_Change Emergency Light.xlxs.exe")

NanoCore RAT C2:
193.37.254.35:4070

Intelligence

File Origin
# of uploads :
1
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/74502/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/506735
Signature
.NET source code contains potential unpacker
Detected Nanocore Rat
Detected unpacking (changes PE section rights)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
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: 302551 Sample: SOW_Change Emergency Light.... Startdate: 22/10/2020 Architecture: WINDOWS Score: 100 67 Found malware configuration 2->67 69 Malicious sample detected (through community Yara rule) 2->69 71 Multi AV Scanner detection for dropped file 2->71 73 15 other signatures 2->73 8 SOW_Change Emergency Light.xlxs.exe 7 2->8         started        12 SOW_Change Emergency Light.xlxs.exe 4 2->12         started        14 dhcpmon.exe 2->14         started        16 dhcpmon.exe 3 2->16         started        process3 file4 57 C:\Users\user\AppData\Roaming\lNnvCXdZo.exe, PE32 8->57 dropped 59 C:\Users\...\lNnvCXdZo.exe:Zone.Identifier, ASCII 8->59 dropped 61 C:\Users\user\AppData\Local\...\tmp6C30.tmp, XML 8->61 dropped 63 SOW_Change Emergency Light.xlxs.exe.log, ASCII 8->63 dropped 77 Injects a PE file into a foreign processes 8->77 18 SOW_Change Emergency Light.xlxs.exe 1 17 8->18         started        23 schtasks.exe 1 8->23         started        25 schtasks.exe 1 12->25         started        27 SOW_Change Emergency Light.xlxs.exe 2 12->27         started        29 SOW_Change Emergency Light.xlxs.exe 12->29         started        31 schtasks.exe 14->31         started        33 dhcpmon.exe 14->33         started        35 dhcpmon.exe 14->35         started        signatures5 process6 dnsIp7 65 193.37.254.35, 4070, 49721 M247GB Romania 18->65 51 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->51 dropped 53 C:\Users\user\AppData\Roaming\...\run.dat, data 18->53 dropped 55 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->55 dropped 75 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->75 37 schtasks.exe 1 18->37         started        39 schtasks.exe 1 18->39         started        41 conhost.exe 23->41         started        43 conhost.exe 25->43         started        45 conhost.exe 31->45         started        file8 signatures9 process10 process11 47 conhost.exe 37->47         started        49 conhost.exe 39->49         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e58365faedd335953c8f41dc5d7e9056c6db3924628dcf977ad7e556410d558a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-10-22 06:35:22 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=4wbwl6xn2m2zkpepihof27uqk3dnwojemkg47f3227svmqinkwfa._file
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
keylogger trojan stealer spyware family:nanocore evasion persistence
Link:
https://tria.ge/reports/201022-j97yx11xgs/
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
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
NanoCore
Malware Config
C2 Extraction:
193.37.254.35:4070
127.0.0.1:4070
Unpacked files
SH256 hash:
e58365faedd335953c8f41dc5d7e9056c6db3924628dcf977ad7e556410d558a
MD5 hash:
aeddfd4a3fc6d3c61ef6b59064558fac
SHA1 hash:
43a41c7f76bc7180e1873a1159322e1f4c8ffbb5
Link:
https://www.unpac.me/results/e26a4b25-d3e4-4594-9853-c310ec3354bf/
SH256 hash:
bac5797bde4b2810766a40d95bcdb825ac5b395fcbadd139daa19a44a6cdc049
MD5 hash:
a92cc1f6e0a2742350dfda6726db14c0
SHA1 hash:
e5404e3ed46498deb8ad8966a774540c2b8e9c1e
Link:
https://www.unpac.me/results/e26a4b25-d3e4-4594-9853-c310ec3354bf/
Please note that we are no longer able to provide a coverage score for Virus Total.

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

zip 93f723072985373ab34de389f40aa1cd37de824d111998e3c6bbd6dde0d105d0

NanoCore

Executable exe e58365faedd335953c8f41dc5d7e9056c6db3924628dcf977ad7e556410d558a

(this sample)

  
Dropped by
MD5 4d4d1b8ebccfcb907360e55391abbf8c
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/74502/
  
Dropped by
SHA256 93f723072985373ab34de389f40aa1cd37de824d111998e3c6bbd6dde0d105d0

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