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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72. 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


DarkComet


Vendor detections: 13


Intelligence 13 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72
SHA3-384 hash: a09ff331fd795be6c2268dbabaaee27110858216d297cd3f49b641567dcb0ad37b9d6896a35761f3371a3d96ce2e601d
SHA1 hash: ee585ed89df214b743ceb8fe2cf85999e6013806
MD5 hash: 50889863763dec84072482d72d257a5a
humanhash: speaker-oranges-harry-berlin
File name:cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72
Download: download sample
Signature DarkComet
Create hunting rule
File size:1'367'040 bytes
First seen:2021-09-08 06:39:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 9222d372923baed7aa9dfa28449a94ea (11 x AsyncRAT, 10 x RedLineStealer, 9 x NanoCore)
ssdeep 24576:qT0QRWoJEfg0oChGdJQbjPbNW5tYeP+GFpgjMAgjMkV8gjU:qgQRV2o3MPY5AFjM5jMCtjU
Threatray 151 similar samples on MalwareBazaar
TLSH T140557C22BA808437D7210574BCDAD2A5DD2ABD2D2E25A54B7FD73F4C5A3438228F135B
dhash icon a024f4b494c8e040 (1 x DarkComet)
Reporter JAMESWT_WT
Tags:DarkComet exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
841
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72
Verdict:
Malicious activity
Analysis date:
2021-09-08 06:41:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0de715f9-8a51-49cf-ac32-44f13224eb1c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
DarkComet
Create hunting rule
Link:
https://www.capesandbox.com/analysis/186208/
Detection(s):
Win.Trojan.DarkKomet-1
Create hunting rule

PUA.Win.Packer.Exe-6
Create hunting rule

Win.Keylogger.1467fc-6842033-0
Create hunting rule

Win.Trojan.Vobfus-6875610-0
Create hunting rule

Win.Tool.Binder-9794371-0
Create hunting rule

Win.Dropper.Zeus-9820070-0
Create hunting rule

Win.Trojan.Darkkomet-9857871-0
Create hunting rule

PUA.Win.Packer.PrivateEXEProtector4-6192998-2
Create hunting rule

Win.Trojan.Darkkomet-6745084-0
Create hunting rule

Win.Trojan.Binder-6
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Creating a file
Enabling the 'hidden' option for recently created files
Launching cmd.exe command interpreter
Creating a process with a hidden window
Sending a UDP request
Creating a file in the Windows directory
Launching the process to change the firewall settings
Launching a process
Connection attempt
Searching for the window
Searching for the Windows task manager window
Launching a service
DNS request
Enabling the 'hidden' option for files in the %temp% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Blocking the User Account Control
Launching the process to interact with network services
Blocking the Windows Security Center launch
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun for a service
Enabling autorun
Malware family:
DarkComet
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4d4fb4cb-6217-46c1-a5ef-57aeb68a0ad2
Result
Threat name:
Darkcomet
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/847108
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Changes security center settings (notifications, updates, antivirus, firewall)
Contains functionality to capture and log keystrokes
Contains functionality to inject code into remote processes
Contains functionality to log keystrokes
Contains functionalty to change the wallpaper
Creates an autostart registry key pointing to binary in C:\Windows
Creates an undocumented autostart registry key
Creates multiple autostart registry keys
Detected Darkcomet RAT
Disables security and backup related services
Disables the windows firewall (over ALG)
Disables UAC (registry)
Disables user account control notifications
Disables windows user account control
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the document folder of the user
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies the windows firewall
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses cmd line tools excessively to alter registry or file data
Uses netsh to modify the Windows network and firewall settings
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes to foreign memory regions
Yara detected DarkComet
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 479536 Sample: mbZIzXy5Q2 Startdate: 08/09/2021 Architecture: WINDOWS Score: 100 87 laylaylom15975300.freeddns.org 2->87 105 Malicious sample detected (through community Yara rule) 2->105 107 Antivirus detection for dropped file 2->107 109 Antivirus / Scanner detection for submitted sample 2->109 111 12 other signatures 2->111 9 mbZIzXy5Q2.exe 3 2->9         started        12 Mscvin.exe 2->12         started        16 Mscvin.exe 2->16         started        18 2 other processes 2->18 signatures3 process4 dnsIp5 83 C:\Users\user\AppData\Local\Temp\SERVER.EXE, PE32 9->83 dropped 85 C:\Users\...\BOARDMT2 TICARET HACK V2.3.EXE, PE32 9->85 dropped 20 BOARDMT2 TICARET HACK V2.3.EXE 1 3 9->20         started        24 SERVER.EXE 4 3 9->24         started        95 smtp.yandex.ru 12->95 97 smtp.yandex.com 12->97 139 Antivirus detection for dropped file 12->139 141 Multi AV Scanner detection for dropped file 12->141 143 Machine Learning detection for dropped file 12->143 27 net.exe 12->27         started        29 net.exe 12->29         started        31 netsh.exe 12->31         started        99 smtp.yandex.ru 16->99 101 smtp.yandex.com 16->101 145 Disables security and backup related services 16->145 33 netsh.exe 16->33         started        35 net.exe 16->35         started        37 net.exe 16->37         started        103 laylaylom15975300.freeddns.org 139.28.106.37, 1604 NETSPEEDTR Turkey 18->103 147 Installs a global keyboard hook 18->147 39 2 other processes 18->39 file6 signatures7 process8 dnsIp9 79 C:\Users\user\Documents\...\iexplorer.exe, PE32 20->79 dropped 113 Creates an undocumented autostart registry key 20->113 115 Creates multiple autostart registry keys 20->115 41 iexplorer.exe 20->41         started        52 3 other processes 20->52 91 smtp.yandex.ru 77.88.21.158, 465, 49696, 49699 YANDEXRU Russian Federation 24->91 93 smtp.yandex.com 24->93 81 C:\Windows\Mscvin.exe, PE32 24->81 dropped 117 Antivirus detection for dropped file 24->117 119 Multi AV Scanner detection for dropped file 24->119 121 Changes security center settings (notifications, updates, antivirus, firewall) 24->121 123 7 other signatures 24->123 55 3 other processes 24->55 57 2 other processes 27->57 59 2 other processes 29->59 44 conhost.exe 31->44         started        46 conhost.exe 33->46         started        48 conhost.exe 35->48         started        50 conhost.exe 37->50         started        file10 signatures11 process12 dnsIp13 125 Antivirus detection for dropped file 41->125 127 Multi AV Scanner detection for dropped file 41->127 129 Detected Darkcomet RAT 41->129 137 8 other signatures 41->137 61 iexplore.exe 41->61         started        89 127.0.0.1 unknown unknown 52->89 131 Uses ping.exe to sleep 52->131 133 Uses cmd line tools excessively to alter registry or file data 52->133 135 Uses ping.exe to check the status of other devices and networks 52->135 63 conhost.exe 52->63         started        65 conhost.exe 52->65         started        67 attrib.exe 52->67         started        75 3 other processes 52->75 69 conhost.exe 55->69         started        71 conhost.exe 55->71         started        73 conhost.exe 55->73         started        77 2 other processes 55->77 signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72/
Threat name:
Win32.Backdoor.Fynloski
Create hunting rule
Status:
Malicious
First seen:
2021-09-04 20:00:03 UTC
File Type:
PE (Exe)
Extracted files:
45
AV detection:
43 of 45 (95.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z6ufbw4h3gho2so6yvb2pf367erb3rrl2sghvkvk7yjspsdevjza._file
Verdict:
malicious
Similar samples:
2fa59f06afb2e3c9bfa441137dbb4edeaec4c3c6ebf1fab6a7bf33cfa253a588
DarkComet
4393f198e95b067abfb4e156d2d9c55ad6bef33cc0d5e21cebc374e9a2392d03
DarkComet
5daf38ba7d08872375f14a3d8de794d20aa37e1caeda4da0558e2a9cd4ed668a
DarkComet
a1e995c3ae3dc0bb88284a79ceb53fc6c723e0f78aaf545053f25a7927c58ab8
DarkComet
b13b73296a76348fa21f9d6120e93b0e6788dd1e0ffe245c23313384db089fd6
DarkComet
eadb655f8e92bf218894b479082dc74e0fce5a44cef4d74a6c3cf51c1773e4e3
DarkComet
+ 141 additional samples on MalwareBazaar
Result
Malware family:
darkcomet
Create hunting rule
Score:
  10/10
Tags:
family:darkcomet botnet:m2 evasion persistence rat trojan
Link:
https://tria.ge/reports/210908-hfcatshbdq/
Behaviour
Modifies registry class
Runs net.exe
Runs ping.exe
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System policy modification
Views/modifies file attributes
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
Loads dropped DLL
Windows security modification
Executes dropped EXE
Modifies Windows Firewall
Sets file to hidden
Darkcomet
Modifies WinLogon for persistence
Modifies security service
UAC bypass
Windows security bypass
Malware Config
C2 Extraction:
127.0.0.1:1604
laylaylom15975300.freeddns.org:1604
Unpacked files
SH256 hash:
be057f7bcba4b31d044caae8050e7b4c6c881d8d960aa445b59b88452a40b061
MD5 hash:
d0f41de7eda6ce2fb63d6c5ac6001fcb
SHA1 hash:
16abb264aa6b79af9223ae6d7aa81339ca162b5e
Detections:
win_darkcomet_g0
Create hunting rule
win_darkcomet_auto
Create hunting rule
Link:
https://www.unpac.me/results/a2425129-d5bd-4a07-a102-f5f21a5b99fb/
SH256 hash:
c5fd8fd22af9087c24fb998e7c4ddab87a9bb793dac5bab1888e0dc5a85df3c1
MD5 hash:
e9b25e3fdfc50388c1f90b35814071c6
SHA1 hash:
9a57f81a80aad977d59aa4066c3559bfddcaf443
Link:
https://www.unpac.me/results/a2425129-d5bd-4a07-a102-f5f21a5b99fb/
SH256 hash:
cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72
MD5 hash:
50889863763dec84072482d72d257a5a
SHA1 hash:
ee585ed89df214b743ceb8fe2cf85999e6013806
Detections:
win_darkcomet_auto
Create hunting rule
win_darkcomet_g0
Create hunting rule
Link:
https://www.unpac.me/results/a2425129-d5bd-4a07-a102-f5f21a5b99fb/
Malware family:
DarkComet
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/cfa850db87d9/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
DarkComet
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/cfa850db87d98eed49dec543a7977ef9221dc62bd48c7aaaaafe1327c864aa72

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:Intezer_Vaccine_DarkComet
Create hunting rule
Author:Intezer Labs
Description:Automatic YARA vaccination rule created based on the file's genes
Reference:https://analyze.intezer.com
Rule name:Malware_QA_update
Create hunting rule
Author:Florian Roth
Description:VT Research QA uploaded malware - file update.exe
Reference:VT Research QA
Rule name:Malware_QA_update_RID2DAD
Create hunting rule
Author:Florian Roth
Description:VT Research QA uploaded malware - file update.exe
Reference:VT Research QA
Rule name:RAT_DarkComet
Create hunting rule
Author:Kevin Breen <kevin@techanarchy.net>
Description:Detects DarkComet RAT
Reference:http://malwareconfig.com/stats/DarkComet
Rule name:win_darkcomet_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/186208/

Comments