MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6b31ca6c8f2e9316d774083b38b454dd9dab046ad40760c2d35ccb417e9a2857. 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


Chaos


Vendor detections: 14


Intelligence 14 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6b31ca6c8f2e9316d774083b38b454dd9dab046ad40760c2d35ccb417e9a2857
SHA3-384 hash: 1689e7ad90bd42ef0aea4205e8a1d5705abd61ac7635f7a05ace461ea727d4a4127bb79c573850976256450667b3efb4
SHA1 hash: 015d5aaf868337ec93dded8eb62d738499529c53
MD5 hash: 86f13175fc8011acabf0740eebb9bdf8
humanhash: table-muppet-cold-north
File name:2023-02-21_86f13175fc8011acabf0740eebb9bdf8_wannacry
Download: download sample
Signature Chaos
Create hunting rule
File size:283'576 bytes
First seen:2023-02-23 05:04:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'604 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:sr9mur96XZKypIHKgVWK8fHIfyUMFpOCnu:G96XZKyp2KgVWLfHIfydCAu
Threatray 865 similar samples on MalwareBazaar
TLSH T18E542C2439EB502EF373AEB54FD8B59FAA6FF7732707A4592061038A4712940DD8173A
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter petikvx
Tags:Chaos signed

Code Signing Certificate

Organisation:RE Developer
Issuer:RE Developer
Algorithm:sha256WithRSAEncryption
Valid from:2023-02-19T12:20:11Z
Valid to:2028-02-19T12:20:11Z
Serial number: 7bf27df62f8c54e16a993927f87869b4
Thumbprint Algorithm:SHA256
Thumbprint: 6a752e28027f4eb209686cfed411617e9d1cd5b06baa4fd81200f65611767a17
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
127
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2023-02-21_86f13175fc8011acabf0740eebb9bdf8_wannacry
Verdict:
Malicious activity
Analysis date:
2023-02-23 05:05:02 UTC
Tags:
ransomware
Link:
https://app.any.run/tasks/8874b71c-f8c6-41c4-8004-2542ebca2ed6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Chaos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/369161/
Detection(s):
Win.Ransomware.Hydracrypt-9878672-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %AppData% directory
Сreating synchronization primitives
Creating a process from a recently created file
Creating a file
Moving a recently created file
Changing a file
Reading critical registry keys
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Unauthorized injection to a recently created process
Creating a file in the mass storage device
Stealing user critical data
Enabling autorun by creating a file
Encrypting user's files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe filecoder hydracrypt overlay packed packed ransomware ransomx sorry
Link:
https://www.filescan.io/uploads/63f6f401b53d126ad265bd58/reports/68f6f5d4-f0eb-43e1-8a93-f01fff2556d8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/6b31ca6c8f2e9316d774083b38b454dd9dab046ad40760c2d35ccb417e9a2857
Result
Verdict:
MALICIOUS
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:
CHAOS Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/79116729-0e49-4568-ad76-265a6b9102c7
Result
Threat name:
Chaos, CrackVirus
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1181076
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates files inside the volume driver (system volume information)
Deletes shadow drive data (may be related to ransomware)
Deletes the backup plan of Windows
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May disable shadow drive data (uses vssadmin)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Delete shadow copy via WMIC
Sigma detected: Drops script at startup location
Uses bcdedit to modify the Windows boot settings
Writes a notice file (html or txt) to demand a ransom
Yara detected Chaos Ransomware
Yara detected CrackVirus Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 813907 Sample: WnW6McOM8H.exe Startdate: 23/02/2023 Architecture: WINDOWS Score: 100 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus / Scanner detection for submitted sample 2->81 83 Multi AV Scanner detection for submitted file 2->83 85 6 other signatures 2->85 8 WnW6McOM8H.exe 4 2->8         started        11 devcon.exe 6 2->11         started        14 wbuser.exe 2->14         started        16 4 other processes 2->16 process3 file4 73 C:\Users\user\AppData\Roaming\devcon.exe, PE32 8->73 dropped 75 C:\Users\user\...\devcon.exe:Zone.Identifier, ASCII 8->75 dropped 77 C:\Users\user\AppData\...\WnW6McOM8H.exe.log, CSV 8->77 dropped 18 devcon.exe 3 49 8->18         started        103 Deletes shadow drive data (may be related to ransomware) 11->103 105 Uses bcdedit to modify the Windows boot settings 11->105 22 cmd.exe 11->22         started        24 cmd.exe 11->24         started        26 cmd.exe 11->26         started        28 notepad.exe 11->28         started        107 Creates files inside the volume driver (system volume information) 14->107 signatures5 process6 file7 65 C:\Users\user\Searches\Attention Please.txt, Unicode 18->65 dropped 67 C:\Users\user\...\Attention Please.txt, Unicode 18->67 dropped 69 C:\Users\user\...\Attention Please.txt, Unicode 18->69 dropped 71 11 other malicious files 18->71 dropped 87 Antivirus detection for dropped file 18->87 89 Multi AV Scanner detection for dropped file 18->89 91 Machine Learning detection for dropped file 18->91 101 2 other signatures 18->101 30 cmd.exe 1 18->30         started        33 cmd.exe 1 18->33         started        35 cmd.exe 1 18->35         started        37 notepad.exe 18->37         started        93 May disable shadow drive data (uses vssadmin) 22->93 95 Deletes shadow drive data (may be related to ransomware) 22->95 39 conhost.exe 22->39         started        41 vssadmin.exe 22->41         started        43 WMIC.exe 22->43         started        97 Uses bcdedit to modify the Windows boot settings 24->97 45 3 other processes 24->45 99 Deletes the backup plan of Windows 26->99 47 2 other processes 26->47 signatures8 process9 signatures10 109 May disable shadow drive data (uses vssadmin) 30->109 111 Deletes shadow drive data (may be related to ransomware) 30->111 113 Uses bcdedit to modify the Windows boot settings 30->113 49 WMIC.exe 1 30->49         started        51 conhost.exe 30->51         started        53 vssadmin.exe 1 30->53         started        55 bcdedit.exe 8 1 33->55         started        57 bcdedit.exe 7 1 33->57         started        59 conhost.exe 33->59         started        115 Deletes the backup plan of Windows 35->115 61 conhost.exe 35->61         started        63 wbadmin.exe 35->63         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6b31ca6c8f2e9316d774083b38b454dd9dab046ad40760c2d35ccb417e9a2857/
Threat name:
ByteCode-MSIL.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2023-02-20 12:47:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
31 of 38 (81.58%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=nmy4u3epf2jrnv3uba5trncu3wo2wbdk2qdwbqwtltfuc7u2fblq._file
Verdict:
malicious
Similar samples:
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Chaos
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Chaos
+ 855 additional samples on MalwareBazaar
Result
Malware family:
chaos
Create hunting rule
Score:
  10/10
Tags:
family:chaos evasion ransomware spyware stealer
Link:
https://tria.ge/reports/230223-fqvttagg2x/
Behaviour
Checks SCSI registry key(s)
Interacts with shadow copies
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
Sets desktop wallpaper using registry
Drops desktop.ini file(s)
Checks computer location settings
Drops startup file
Executes dropped EXE
Reads user/profile data of web browsers
Deletes backup catalog
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Chaos
Chaos Ransomware
Unpacked files
SH256 hash:
6b31ca6c8f2e9316d774083b38b454dd9dab046ad40760c2d35ccb417e9a2857
MD5 hash:
86f13175fc8011acabf0740eebb9bdf8
SHA1 hash:
015d5aaf868337ec93dded8eb62d738499529c53
Link:
https://www.unpac.me/results/5d9cb173-d495-4f40-9af4-1c0ebe5c2c3a/
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/6b31ca6c8f2e9316d774083b38b454dd9dab046ad40760c2d35ccb417e9a2857

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:INDICATOR_SUSPICIOUS_GENRansomware
Create hunting rule
Author:ditekSHen
Description:detects command variations typically used by ransomware
Rule name:MALWARE_Win_Chaos
Create hunting rule
Author:ditekSHen
Description:Detects Chaos ransomware
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Cape
Cape
https://www.capesandbox.com/analysis/369161/

Comments