MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24
SHA3-384 hash: b3faf2cd1e2a4f99766e579bf4a8de4562e7a717bd480c380193a5a721c66e8e66d3b02d12660ec7c1f737eda8099a8d
SHA1 hash: 4cffb6ea07a50a0944b1fd58afc482793bac2042
MD5 hash: 1571e2fc9c822d46b9ce7fc40bc0e315
humanhash: hotel-happy-pennsylvania-network
File name:BOQ-DOU-2021-09-02.bat
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'099'264 bytes
First seen:2021-08-06 12:23:32 UTC
Last seen:2021-08-06 13:44:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:ZXb0wFVMNjMZz9Rvp3dUGcG+SO1y2XXJvkdMXt1td5:ZXYwFShMNp3dUrhSq7Jv2yd5
Threatray 2'982 similar samples on MalwareBazaar
TLSH T13935E0343AEE6308D5BBF770463692404BFAF937D716C74E2C62604C9AB3A824752F56
dhash icon 851a98b4909864c4 (58 x AgentTesla, 43 x Formbook, 34 x RedLineStealer)
Reporter GovCERT_CH
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
428
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
BOQ-DOU-2021-09-02.bat
Verdict:
Malicious activity
Analysis date:
2021-08-06 12:38:17 UTC
Tags:
rat nanocore evasion trojan snakekeylogger keylogger
Link:
https://app.any.run/tasks/534a7baa-3a5e-41ac-b196-c90a6ca092ba

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/176990/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Taskun.4c.1113.948.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
Creating a file
Creating a process from a recently created file
DNS request
Creating a file in the %AppData% subdirectories
Connection attempt
Sending an HTTP GET request
Creating a file in the Program Files subdirectories
Sending a custom TCP request
Reading critical registry keys
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Setting a global event handler for the keyboard
Connection attempt to an infection source
Enabling autorun by creating a file
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
NanoCoreRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f0c5c499-1578-4b3e-9605-e841a97b1aab
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/828272
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus detection for dropped file
Detected Nanocore Rat
Detected unpacking (overwrites its own PE header)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
May check the online IP address of the machine
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 460707 Sample: BOQ-DOU-2021-09-02.bat Startdate: 06/08/2021 Architecture: WINDOWS Score: 100 58 send.one.com 2->58 70 Antivirus detection for dropped file 2->70 72 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->72 74 Multi AV Scanner detection for submitted file 2->74 76 8 other signatures 2->76 10 BOQ-DOU-2021-09-02.exe 7 2->10         started        14 ikmerro nano.exe 2->14         started        16 dhcpmon.exe 2->16         started        signatures3 process4 file5 44 C:\Users\user\AppData\Local\...\tmp2BD3.tmp, XML 10->44 dropped 46 C:\Users\user\...\BOQ-DOU-2021-09-02.exe.log, ASCII 10->46 dropped 48 C:\Users\user\AppData\...\UCtTghnRirdiH.exe, PE32 10->48 dropped 86 Uses schtasks.exe or at.exe to add and modify task schedules 10->86 88 Injects a PE file into a foreign processes 10->88 18 BOQ-DOU-2021-09-02.exe 3 10->18         started        21 schtasks.exe 1 10->21         started        50 C:\Users\user\...\ikmerro nano.exe.log, ASCII 14->50 dropped 52 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 16->52 dropped signatures6 process7 file8 40 C:\Users\user\AppData\...\snake logger.exe, PE32 18->40 dropped 42 C:\Users\user\AppData\...\ikmerro nano.exe, PE32 18->42 dropped 23 snake logger.exe 14 2 18->23         started        27 ikmerro nano.exe 1 13 18->27         started        30 conhost.exe 21->30         started        process9 dnsIp10 60 checkip.dyndns.com 193.122.130.0, 49726, 80 ORACLE-BMC-31898US United States 23->60 62 send.one.com 46.30.211.141, 49732, 49734, 49735 ONECOMDK Denmark 23->62 68 3 other IPs or domains 23->68 78 Tries to steal Mail credentials (via file access) 23->78 80 Tries to harvest and steal ftp login credentials 23->80 82 Tries to harvest and steal browser information (history, passwords, etc) 23->82 64 194.5.98.127, 49728, 49731, 49739 DANILENKODE Netherlands 27->64 66 127.0.0.1 unknown unknown 27->66 54 C:\Program Files (x86)\...\dhcpmon.exe, PE32 27->54 dropped 56 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 27->56 dropped 84 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->84 32 schtasks.exe 1 27->32         started        34 schtasks.exe 27->34         started        file11 signatures12 process13 process14 36 conhost.exe 32->36         started        38 conhost.exe 34->38         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-06 12:24:07 UTC
AV detection:
18 of 28 (64.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ysk4edjhmxvgszflgvkru45chwz5pnfmytbmshpegdo3qvtahisa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
1a3736d0a59836c3feecb448a77c4ab269dbd29df9de58ef81070129e248eb6c
NanoCore
28e575260cc878a8215800ebdaa02684d6997954a381c748e1e0fde409fadbd9
NanoCore
41f7f900d07f07c3f6d9d8aba51633b84766f7afe166505ac25a1bc5854f5f4a
NanoCore
47738787dc09377ee3517c66950e1a6c93107d71a591c9b9bdc4f915d13a7c75
NanoCore
619a5e8a0ade93b187c7f438bcb7c5bb15a33da3148176513a2c0010c7960cd4
NanoCore
67794b522d3185f6872eb4d77782d7d22a540f55d4d4f56783d1a43d1c088dd1
NanoCore
ceff566b610cbb7bfdf4e575fac71fe7e3d920d5248521a8f75b777261552e0f
NanoCore
f61ec8c71bac6919062cddd77fa7fc6fa664c31cf71023925385d37ee42dc673
NanoCore
+ 2'972 additional samples on MalwareBazaar
Result
Malware family:
snakekeylogger
Create hunting rule
Score:
  10/10
Tags:
family:nanocore family:snakekeylogger evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210806-52m8tys2ze/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Looks up external IP address via web service
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
NanoCore
Snake Keylogger
Malware Config
C2 Extraction:
194.5.98.127:54984
127.0.0.1:54984
Unpacked files
SH256 hash:
bc903d20250251ec239811b9007c5221f5c267a1e1a9e9e8dd1eb05e062d5e06
MD5 hash:
e0c153e19ccb6366a79cf3571a191561
SHA1 hash:
dfee299bd88926e7b9f07c4ea8ae31d2cba69367
Link:
https://www.unpac.me/results/3c98b987-56ea-430d-b860-c9d3afe72de8/
SH256 hash:
0195b5c6f14b4d3c3b9654187133f96e8c498a0831d2a0961b6885a8d4932e47
MD5 hash:
ec962e97ec8150569cda2415c5d07628
SHA1 hash:
1043e3b22ceb0f35d695f2096af0c2a5b25a1000
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/3c98b987-56ea-430d-b860-c9d3afe72de8/
Parent samples :
9c6c647533d380c250dde31179fdeb02286f169a47e86e2071930512e0b04bac
bca7d4635b7130251ca3ca66b199519e3a9fd4af9c3ab13f346f0b487a940757
c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24
4151897619823917cf3420046de0a8d3c0da19995acbcb134cc784250945d53a
26f5e5a6934f7a01450d45745ff1622d20ac675b314906d72ad88bc3e358e219
SH256 hash:
aed00f82f1772e5a403cce9c1349202c8371e67ed9ef19a33cac0bf2a411f3c1
MD5 hash:
c273f926e2a29bd62cc8f27b569a0b2a
SHA1 hash:
e08d302cab3e11d776599a6b0537207fce6f9c51
Link:
https://www.unpac.me/results/3c98b987-56ea-430d-b860-c9d3afe72de8/
SH256 hash:
25ef626936603a014af282b304813b9dbffbf8781558229d545e2be19dc612c4
MD5 hash:
f8a6ed83ef5fcc9fd61a9efb1a4250d5
SHA1 hash:
4a2b5ec718412cb02d341c79704be3bac3f7d007
Link:
https://www.unpac.me/results/3c98b987-56ea-430d-b860-c9d3afe72de8/
SH256 hash:
99523002dbc3192f9b13932968471756b83dcff82f978c8a68f8218dfb8a65bb
MD5 hash:
b8937b502294cdd07e6333c62fe65e04
SHA1 hash:
05a6be296177307c03e4b4c250f014af4d86e34e
Link:
https://www.unpac.me/results/3c98b987-56ea-430d-b860-c9d3afe72de8/
SH256 hash:
c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24
MD5 hash:
1571e2fc9c822d46b9ce7fc40bc0e315
SHA1 hash:
4cffb6ea07a50a0944b1fd58afc482793bac2042
Link:
https://www.unpac.me/results/3c98b987-56ea-430d-b860-c9d3afe72de8/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24

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:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

NanoCore

Executable exe c495c20d2765ea6964ab35551a73a23db3d7b4acc4c2c91de430ddb856603a24

(this sample)

  
Dropped by
null
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/176990/

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