MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bd6bf8005075ea1cc5d137bff7d8d4a30eec803e71f0bc6bcd274540433ec829. 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: 12


Intelligence 12 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bd6bf8005075ea1cc5d137bff7d8d4a30eec803e71f0bc6bcd274540433ec829
SHA3-384 hash: 373c5e0d0b53ec0d5392db4e1127235c065d0fda1e54f5981b184ebb461520d2b8fdbd5aade360fb44f28428949e654e
SHA1 hash: aa8e6cad1588892cd63410a4036c325a6957041e
MD5 hash: 34b6a1dda32742026b2dce1e75bf75ac
humanhash: yellow-shade-artist-kitten
File name:HEUR-Trojan-Ransom.MSIL.Agent.gen-bd6bf8005075ea1cc5d137bff7d8d4a30eec803e71f0bc6bcd274540433ec829
Download: download sample
Signature Chaos
Create hunting rule
File size:23'552 bytes
First seen:2022-09-22 17:41:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'991 x AgentTesla, 19'898 x Formbook, 12'331 x SnakeKeylogger)
ssdeep 192:a5OqAhgJICs6ctugzVr/igHxlqjNjDocYDHgSSes/91CPmfNiS3wAOff8bXZ5DYi:IOgHs6cYgBznHTQlCJSr91CMnbJ3y4
TLSH T137B2B41427FA5A39F6FB2E786CB1214167B5BD63ED3DD74D188E004D0822B9C8C90BB6
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter petikvx
Tags:Chaos exe Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
546
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
test.rar
Verdict:
Malicious activity
Analysis date:
2021-07-30 09:14:27 UTC
Tags:
ransomware
Link:
https://app.any.run/tasks/cccb031e-7f7f-4a92-9ddc-9062190f9800

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/312421/
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
Launching a process
Creating a window
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:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
cmd.exe packed ransomware
Link:
https://www.filescan.io/uploads/632c9e5c6aa625318dcef3ce/reports/503699fe-a8cc-46d6-b6b1-71cc6d17485b/overview
Malware family:
CHAOS Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d3456a44-3884-4a88-b907-7ca97cd72747
Result
Threat name:
Chaos, TrojanRansom
Create hunting rule
Detection:
malicious
Classification:
rans.expl
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1075532
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Deletes shadow drive data (may be related to ransomware)
Drops PE files with benign system names
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Writes a notice file (html or txt) to demand a ransom
Yara detected Chaos Ransomware
Yara detected TrojanRansom
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bd6bf8005075ea1cc5d137bff7d8d4a30eec803e71f0bc6bcd274540433ec829/
Threat name:
ByteCode-MSIL.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2021-07-24 02:45:17 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xvv7qacqoxvbzrorg677pwguumhozab6ohyly26ne5cuaqz6zauq._file
Verdict:
malicious
Result
Malware family:
chaos
Create hunting rule
Score:
  10/10
Tags:
family:chaos ransomware
Link:
https://tria.ge/reports/220922-v91lqsfghr/
Behaviour
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
Program crash
Drops desktop.ini file(s)
Checks computer location settings
Drops startup file
Executes dropped EXE
Modifies extensions of user files
Chaos
Chaos Ransomware
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9f67ca92-44fb-4b26-9e37-b5ccfa368b37
Unpacked files
SH256 hash:
bd6bf8005075ea1cc5d137bff7d8d4a30eec803e71f0bc6bcd274540433ec829
MD5 hash:
34b6a1dda32742026b2dce1e75bf75ac
SHA1 hash:
aa8e6cad1588892cd63410a4036c325a6957041e
Link:
https://www.unpac.me/results/3b594940-5544-4002-8fd8-f645fa86b9ac/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/bd6bf8005075/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/bd6bf8005075ea1cc5d137bff7d8d4a30eec803e71f0bc6bcd274540433ec829

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:Destructive_Ransomware_Gen1
Create hunting rule
Author:Florian Roth
Description:Detects destructive malware
Reference:http://blog.talosintelligence.com/2018/02/olympic-destroyer.html
Rule name:Destructive_Ransomware_Gen1_RID31CB
Create hunting rule
Author:Florian Roth
Description:Detects destructive malware
Reference:http://blog.talosintelligence.com/2018/02/olympic-destroyer.html
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:RansomwareTest6
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
Rule name:RansomwareTest7
Create hunting rule
Author:Daoyuan Wu
Description:Test Ransomware YARA rules
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/312421/

Comments