MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5. 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


Threat unknown


Vendor detections: 8


Intelligence 8 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5
SHA3-384 hash: 8db1ecc4972dfdaea140e37fee848324a72c8d1d11ad94343341540cd0b8abcdfb5332ddb1b94df2a8eb2c4fc0e064e8
SHA1 hash: f9d19c4befc2a673e0c70141747cdd7fe9d69595
MD5 hash: 5a5c804472ba8dfce45244375bedf837
humanhash: south-charlie-neptune-nuts
File name:b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5
Download: download sample
File size:1'570'816 bytes
First seen:2021-09-07 06:06:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e5467cba76f44a088d39f78c5e807b6 (131 x DCRat, 112 x njrat, 79 x RedLineStealer)
ssdeep 24576:6L6cDlQrwKeBqri73CXUfXMtEqToZDBfgMRTi1k3UsXUBk8SlIA:N6lQ3ri7VqqBflRTi1k3nEfo
Threatray 141 similar samples on MalwareBazaar
TLSH T17775330D48432CA7C2609DBD552E05AAE79CCE1126D586256EBBF807A3FC76035EECC6
Reporter JAMESWT_WT
Tags:exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
87
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5
Verdict:
Malicious activity
Analysis date:
2021-09-07 06:35:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3f3c1847-a65f-4368-96a2-b543b1d3b328

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/185819/
Detection(s):
Win.Packed.XtremeRAT-9837419-0
Create hunting rule

PUA.Win.Packer.EnigmaProtector-9852682-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching the default Windows debugger (dwwin.exe)
Sending a UDP request
Malware family:
CHAOS Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ed0c2380-8721-4e78-a65b-5e51771a42a3
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/846567
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Deletes shadow drive data (may be related to ransomware)
Detected unpacking (changes PE section rights)
Hides threads from debuggers
Machine Learning detection for dropped file
Machine Learning detection for sample
May encrypt documents and pictures (Ransomware)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Drops script at startup location
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Sigma detected: WannaCry Ransomware
Tries to evade analysis by execution special instruction which cause usermode exception
Uses bcdedit to modify the Windows boot settings
Writes a notice file (html or txt) to demand a ransom
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 478998 Sample: 8JpaG8XdIr Startdate: 07/09/2021 Architecture: WINDOWS Score: 100 57 Sigma detected: WannaCry Ransomware 2->57 59 Antivirus / Scanner detection for submitted sample 2->59 61 Multi AV Scanner detection for submitted file 2->61 63 7 other signatures 2->63 8 8JpaG8XdIr.exe 4 2->8         started        12 openvpn.exe 1 2->12         started        14 notepad.exe 2->14         started        16 OpenWith.exe 2->16         started        process3 file4 49 C:\Users\user\AppData\Roaming\openvpn.exe, PE32 8->49 dropped 51 C:\Users\user\...\openvpn.exe:Zone.Identifier, ASCII 8->51 dropped 53 C:\Users\user\AppData\...\8JpaG8XdIr.exe.log, ASCII 8->53 dropped 75 Detected unpacking (changes PE section rights) 8->75 77 Tries to evade analysis by execution special instruction which cause usermode exception 8->77 79 Hides threads from debuggers 8->79 18 openvpn.exe 3 48 8->18         started        55 C:\Users\user\AppData\...\openvpn.exe.log, ASCII 12->55 dropped signatures5 process6 file7 41 C:\Users\user\...\read me for decryption.txt, ASCII 18->41 dropped 43 C:\Users\user\...\read me for decryption.txt, ASCII 18->43 dropped 45 C:\Users\user\...\read me for decryption.txt, ASCII 18->45 dropped 47 11 other malicious files 18->47 dropped 65 Antivirus detection for dropped file 18->65 67 Multi AV Scanner detection for dropped file 18->67 69 Detected unpacking (changes PE section rights) 18->69 71 8 other signatures 18->71 22 cmd.exe 1 18->22         started        25 cmd.exe 1 18->25         started        27 cmd.exe 1 18->27         started        29 notepad.exe 18->29         started        signatures8 process9 signatures10 73 Deletes shadow drive data (may be related to ransomware) 22->73 31 WMIC.exe 1 22->31         started        33 conhost.exe 22->33         started        35 vssadmin.exe 1 22->35         started        37 conhost.exe 25->37         started        39 conhost.exe 27->39         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5/
Threat name:
Win32.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2021-09-06 00:41:13 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
26 of 43 (60.47%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
106c12a3e09c4585808382c93be13f5b60f7cd86e5a28d638d9de5f6662f3609
11a153c8afaa36b8af99ceb85f50b7b923ddacb921dfa9888e0c49d795933075
1c22fc802845f881de088ba734ea7d78e0434451a08515875b6d4b2a57f4e90e
1f2c235e93529aff918ec8634035b3069992ebb16ef8042903edd07b0a21db5b
2f09f4d2b8e06f116dd784829712dcd3bb9528e580ccf6313e4c99fbb89a7792
5f3d5f1a734020dabc57565c29f60194eb2a0fd1eba8fd7a041c6329d5803f78
9a080e918c88adb048ffca38c0604318eee80e19be5a578186a63cdd64d45a41
+ 131 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
ransomware spyware stealer
Link:
https://tria.ge/reports/210907-gttatsbhg6/
Behaviour
Interacts with shadow copies
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops desktop.ini file(s)
Drops startup file
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Modifies extensions of user files
Deletes shadow copies
Unpacked files
SH256 hash:
b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5
MD5 hash:
5a5c804472ba8dfce45244375bedf837
SHA1 hash:
f9d19c4befc2a673e0c70141747cdd7fe9d69595
Link:
https://www.unpac.me/results/e16e8edc-fe20-490b-b787-750f9803c465/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b821dfddfa06/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b821dfddfa068a22242f12ed836ca39dfcca18764ccc29698014c1d0454386a5

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:EnigmaStub
Create hunting rule
Author:@bartblaze
Description:Identifies Enigma packer stub.
Rule name:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:detects command variations typically used by ransomware
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:win_smominru_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.smominru.

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/185819/

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