MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
SHA3-384 hash: 8fcdba9a2cf6823c55d2aaa6240b52dd1fc307739a041aada89a5db71b42add1685d3d6811093dc7db5df07a0aec9deb
SHA1 hash: 6e975642501db27324f035990b507fd2eeda30ba
MD5 hash: 9db424c6cad9c48c559c45c5c410ebe1
humanhash: one-arizona-mississippi-montana
File name:6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
Download: download sample
Signature Chaos
Create hunting rule
File size:2'921'984 bytes
First seen:2024-11-06 21:23:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:1DSqgStv6LDyjF4QYhrxJw+oOD6Nfye2IdiyeU7MMpOusu72d:1+eKQ+Tw5iYfye2IIyFdt7
Threatray 282 similar samples on MalwareBazaar
TLSH T1C5D5192439FB9019B1B3FE966FE8B4E7DA5FF7333606A4692051034A8713981DD8253E
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter johnk3r
Tags:BR Chaos exe Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
2'710
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
Verdict:
Malicious activity
Analysis date:
2024-11-06 21:24:13 UTC
Tags:
chaos ransomware crypto-regex
Link:
https://app.any.run/tasks/ea1ef5f2-a5b9-46bd-9173-07a2eabae203

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Ransomware.Hydracrypt-9878672-0
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672bde798d23d9049134808c
Tags:
powershell autorun
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
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a service
Launching a process
Searching for synchronization primitives
Creating a file in the %temp% directory
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:
anti-security cmd lolbin ransomware wmic
Link:
https://www.filescan.io/uploads/672bde7c182e63505d61ae08/reports/e6ec2022-94ea-4a0c-b280-538894881909/overview
Verdict:
Malicious
Labled as:
Ransom.Agent.Generic
Link:
https://www.hybrid-analysis.com/sample/6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
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/8f49919f-2eb5-4bc4-aaa2-047c3cc27c87
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
rans.phis.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1550608
Signature
.NET source code contains very large strings
AI detected suspicious sample
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Overwrites Mozilla Firefox settings
Sigma detected: Delete shadow copy via WMIC
Sigma detected: Drops script at startup location
Sigma detected: Rare Remote Thread Creation By Uncommon Source Image
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Tries to harvest and steal browser information (history, passwords, etc)
Uses bcdedit to modify the Windows boot settings
Yara detected Chaos Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1550608 Sample: VAooRzDkLD.exe Startdate: 06/11/2024 Architecture: WINDOWS Score: 100 82 Malicious sample detected (through community Yara rule) 2->82 84 Antivirus / Scanner detection for submitted sample 2->84 86 Multi AV Scanner detection for submitted file 2->86 88 9 other signatures 2->88 8 VAooRzDkLD.exe 4 2->8         started        12 DeltaKeyfree.exe 2->12         started        14 wbengine.exe 3 2->14         started        16 3 other processes 2->16 process3 file4 74 C:\Users\user\AppData\...\DeltaKeyfree.exe, PE32 8->74 dropped 76 C:\Users\...\DeltaKeyfree.exe:Zone.Identifier, ASCII 8->76 dropped 78 C:\Users\user\AppData\...\VAooRzDkLD.exe.log, CSV 8->78 dropped 106 Deletes shadow drive data (may be related to ransomware) 8->106 18 DeltaKeyfree.exe 3 54 8->18         started        108 Overwrites Mozilla Firefox settings 12->108 110 Uses bcdedit to modify the Windows boot settings 12->110 112 Tries to harvest and steal browser information (history, passwords, etc) 12->112 22 cmd.exe 12->22         started        24 cmd.exe 12->24         started        26 cmd.exe 12->26         started        28 notepad.exe 12->28         started        114 Creates files inside the volume driver (system volume information) 14->114 signatures5 process6 file7 66 C:\Users\user\AppData\Roaming\...\LEIA-ME.txt, Unicode 18->66 dropped 68 C:\Users\user\AppData\Roaming\...\LEIA-ME.txt, Unicode 18->68 dropped 70 C:\Users\user\AppData\Roaming\...\LEIA-ME.txt, Unicode 18->70 dropped 72 2 other malicious files 18->72 dropped 90 Antivirus detection for dropped file 18->90 92 Multi AV Scanner detection for dropped file 18->92 94 Machine Learning detection for dropped file 18->94 96 Overwrites Mozilla Firefox settings 18->96 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        98 May disable shadow drive data (uses vssadmin) 22->98 100 Deletes shadow drive data (may be related to ransomware) 22->100 39 vssadmin.exe 22->39         started        41 conhost.exe 22->41         started        43 WMIC.exe 22->43         started        102 Uses bcdedit to modify the Windows boot settings 24->102 45 3 other processes 24->45 104 Deletes the backup plan of Windows 26->104 47 2 other processes 26->47 signatures8 process9 signatures10 116 May disable shadow drive data (uses vssadmin) 30->116 118 Deletes shadow drive data (may be related to ransomware) 30->118 120 Uses bcdedit to modify the Windows boot settings 30->120 49 vssadmin.exe 1 30->49         started        52 WMIC.exe 1 30->52         started        54 conhost.exe 30->54         started        56 bcdedit.exe 8 1 33->56         started        58 bcdedit.exe 9 1 33->58         started        60 conhost.exe 33->60         started        122 Deletes the backup plan of Windows 35->122 62 conhost.exe 35->62         started        64 wbadmin.exe 3 35->64         started        process11 signatures12 80 Deletes shadow drive data (may be related to ransomware) 49->80
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98/
Threat name:
ByteCode-MSIL.Ransomware.Sorry
Create hunting rule
Status:
Malicious
First seen:
2024-11-06 21:16:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
35 of 38 (92.11%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=n3zodxgjooad6oljmd6pcgm4wa326gr73ev5qguikd6xms4ptwma._file
Verdict:
malicious
Label(s):
genericransomware
Create hunting rule
chaos
Create hunting rule
Similar samples:
098a4f04ab89f497a4ad50144ca98872eefa6047fceb387ad900e7cb59072389
Chaos
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
Chaos
87501bb9f50174d8d306bbbbebe12903ff01d75de0cc32714ed82991b57a86c6
Chaos
9d7fb7050cf315639502f812d25d49c19b14c93948827484c2514bbc87261920
Chaos
a54a38a9aab0bde31b2065d8b88a8e6569cc66c3f6137379b6b5a62361c319f0
Chaos
be41b813b1af4634ec14cb822090bb16e300dc61f478c473ac3b18e6dc025150
Chaos
error
Chaos
+ 272 additional samples on MalwareBazaar
Result
Malware family:
chaos
Create hunting rule
Score:
  10/10
Tags:
family:chaos defense_evasion evasion execution impact ransomware spyware stealer
Link:
https://tria.ge/reports/241106-z81ybsyejq/
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
Deletes shadow copies
Modifies boot configuration data using bcdedit
Chaos
Chaos Ransomware
Chaos family
Verdict:
Malicious
Tags:
ransomware chaos Win.Ransomware.Hydracrypt-9878672-0
YARA:
MALWARE_Win_Chaos
Link:
https://app.threat.zone/submission/2840d4df-babc-401d-8d4c-f3c1c45da850
Unpacked files
SH256 hash:
6ef2e1dcc973803f396960fcf1199cb037af1a3fd92bd81a8850fd764b8f9d98
MD5 hash:
9db424c6cad9c48c559c45c5c410ebe1
SHA1 hash:
6e975642501db27324f035990b507fd2eeda30ba
Detections:
ChaosRansomware
Create hunting rule
Link:
https://www.unpac.me/results/1b8d84e6-c580-4231-ae43-01bad201d26b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/6ef2e1dcc973/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
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.

  
X
https://x.com/johnk3r/status/1852195723808268532

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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