MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f. 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: 13


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

SHA256 hash: 3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f
SHA3-384 hash: 6646ac485fbb42855d6be3565af15ba0eb05154e256bbc12350cb114a5bb1864fe24b5b7526399bd651cf7f50157ef05
SHA1 hash: ae3bf7a043cb10e8b206261af6af1558fc3d518b
MD5 hash: 4c19104c6df0817095be0846b1607de6
humanhash: grey-montana-winter-eleven
File name:2023-02-11_4c19104c6df0817095be0846b1607de6_wannacry
Download: download sample
Signature Chaos
Create hunting rule
File size:157'184 bytes
First seen:2023-02-12 05:25:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'604 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 3072:o3kkKmAr9iVE3E04sMsXVpBWwLJwvkywY2ZDja9eIBdvhGkJJ9QuxIMb68J5K:y8r9it04XYVBIkNYcaeUvkkD9QRMb6
Threatray 4'234 similar samples on MalwareBazaar
TLSH T1F1E3C0103AF7513AF2F76F785BF4709A8A7EFA636E16D55C1486020B0913B48DE60B35
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)
File icon (PE):PE icon
dhash icon 60e1f1e9e948261c (1 x Chaos)
Reporter petikvx
Tags:Chaos

Intelligence

File Origin
# of uploads :
1
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2023-02-11_4c19104c6df0817095be0846b1607de6_wannacry
Verdict:
Malicious activity
Analysis date:
2023-02-12 05:26:05 UTC
Tags:
ransomware
Link:
https://app.any.run/tasks/5c286128-7b09-4c74-8e4b-2013ef1e485d

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/364287/
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
Changing a file
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Running batch commands
Creating a process with a hidden window
Launching a service
Creating a window
Launching a process
Searching for synchronization primitives
Unauthorized injection to a recently created process
Creating a file in the mass storage device
Deleting volume shadow copies
Preventing system recovery
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe filecoder hydracrypt packed ransomware sorry virus
Link:
https://www.filescan.io/uploads/63e8786ba7809cffc1630d00/reports/35b22741-740e-42d8-bb46-d262bad590ab/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f
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/e8b9eaa4-e6c8-413f-8485-d9f3c42b1285
Result
Threat name:
Chaos, Cryptolocker, TrojanRansom
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1172420
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
Drops PE files with benign system names
Found ransom note / readme
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)
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 Cryptolocker ransomware
Yara detected TrojanRansom
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 805210 Sample: DYgUi0eeUO.exe Startdate: 12/02/2023 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 8 other signatures 2->85 8 DYgUi0eeUO.exe 4 2->8         started        12 svchost.exe 2->12         started        14 wbengine.exe 3 2->14         started        16 3 other processes 2->16 process3 file4 73 C:\Users\user\AppData\Roaming\svchost.exe, PE32 8->73 dropped 75 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 8->75 dropped 77 C:\Users\user\AppData\...\DYgUi0eeUO.exe.log, CSV 8->77 dropped 103 Drops PE files with benign system names 8->103 18 svchost.exe 3 50 8->18         started        105 Deletes shadow drive data (may be related to ransomware) 12->105 107 Uses bcdedit to modify the Windows boot settings 12->107 22 cmd.exe 12->22         started        24 cmd.exe 12->24         started        26 cmd.exe 12->26         started        28 notepad.exe 12->28         started        109 Creates files inside the volume driver (system volume information) 14->109 signatures5 process6 file7 65 C:\Users\user\Videos\read_me.txt, ASCII 18->65 dropped 67 C:\Users\user\Pictures\read_me.txt, ASCII 18->67 dropped 69 C:\Users\user\Pictures\...\read_me.txt, ASCII 18->69 dropped 71 8 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 93 Writes a notice file (html or txt) to demand a ransom 18->93 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        95 May disable shadow drive data (uses vssadmin) 22->95 97 Deletes shadow drive data (may be related to ransomware) 22->97 39 conhost.exe 22->39         started        41 vssadmin.exe 22->41         started        43 WMIC.exe 22->43         started        99 Uses bcdedit to modify the Windows boot settings 24->99 45 3 other processes 24->45 101 Deletes the backup plan of Windows 26->101 47 2 other processes 26->47 signatures8 process9 signatures10 111 May disable shadow drive data (uses vssadmin) 30->111 113 Deletes shadow drive data (may be related to ransomware) 30->113 115 Uses bcdedit to modify the Windows boot settings 30->115 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        117 Deletes the backup plan of Windows 35->117 61 conhost.exe 35->61         started        63 wbadmin.exe 3 35->63         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f/
Threat name:
ByteCode-MSIL.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2023-02-11 21:44:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
35 of 39 (89.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hgmnb2mhvtgcqn6gx6d73mtznuaxblrkpe4dw6h5o6ctcqiogn7q._file
Verdict:
malicious
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Chaos
+ 4'224 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/230212-f4ve7sga3s/
Behaviour
Checks SCSI registry key(s)
Interacts with shadow copies
Modifies registry class
Opens file in notepad (likely ransom note)
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
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
Deletes shadow copies
Modifies boot configuration data using bcdedit
Chaos
Chaos Ransomware
Unpacked files
SH256 hash:
3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f
MD5 hash:
4c19104c6df0817095be0846b1607de6
SHA1 hash:
ae3bf7a043cb10e8b206261af6af1558fc3d518b
Link:
https://www.unpac.me/results/c3517df3-b902-4010-a91a-f2f7d341050c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3998d0e987ac/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/3998d0e987accc2837c6bf87fdb2796d0170ae2a79383b78fd778531410e337f

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_KB_ID_Ransomware_Chaos
Create hunting rule
Author:ditekShen
Description:Detects files referencing identities associated with Chaos ransomware
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_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.

Cape
Cape
https://www.capesandbox.com/analysis/364287/

Comments