MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720
SHA3-384 hash: 1f95e7df4968155357b520ec9e93bf58736f0c050292f8e31adb89aa9b4b78a57e25ce13220eceef31d426e3b992ea18
SHA1 hash: 97f5a29bb43312689de4c043dbea6a424319f407
MD5 hash: 85db480564216a2842299723f2537f57
humanhash: uncle-tango-washington-jersey
File name:2023-02-04_85db480564216a2842299723f2537f57_wannacry
Download: download sample
Signature Chaos
Create hunting rule
File size:131'072 bytes
First seen:2023-02-05 18:16:53 UTC
Last seen:2023-03-10 04:54:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 768:8Jqo2zIpszlgqr91OC/ehhegFH4MkaL5PEs:8co21lgqr91OzhvH4QL5cs
Threatray 4'167 similar samples on MalwareBazaar
TLSH T148D3D50463B6192CFEBA5E782872515D8736BF52DF28961C1B9A3C4F3832FF88811765
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 00a801ecec01a400 (2 x Chaos, 1 x RedLineStealer, 1 x CoinMiner)
Reporter petikvx
Tags:Chaos

Intelligence

File Origin
# of uploads :
5
# of downloads :
119
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Mercurial.exe
Verdict:
Malicious activity
Analysis date:
2023-02-04 14:04:35 UTC
Tags:
ransomware
Link:
https://app.any.run/tasks/f55620f3-f9fd-4251-ab9f-71ccedb5ec7d

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/360439/
Detection(s):
Win.Ransomware.Hydracrypt-9878672-0
Create hunting rule

Win.Trojan.Filerepmalware-9918548-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %AppData% directory
Sending a custom TCP request
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 hiddentear hydracrypt packed ransomware sorry
Link:
https://www.filescan.io/uploads/63dff2a01c9cbf7d6255fbf7/reports/5f38fe91-c671-4548-b052-03efb10bdac2/overview
Verdict:
Malicious
Labled as:
Ransom.Hiddentear.A.Generic
Link:
https://www.hybrid-analysis.com/sample/8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720
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/c6b70ef8-793a-4c4b-aa65-257ee253079c
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1166085
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
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 798856 Sample: vq98jsU7Ow.exe Startdate: 05/02/2023 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 5 other signatures 2->88 9 vq98jsU7Ow.exe 4 2->9         started        13 svchost.exe 5 2->13         started        15 wbengine.exe 2->15         started        17 4 other processes 2->17 process3 file4 76 C:\Users\user\AppData\Roaming\svchost.exe, PE32 9->76 dropped 78 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 9->78 dropped 80 C:\Users\user\AppData\...\vq98jsU7Ow.exe.log, CSV 9->80 dropped 106 Drops PE files with benign system names 9->106 19 svchost.exe 3 47 9->19         started        108 Deletes shadow drive data (may be related to ransomware) 13->108 110 Uses bcdedit to modify the Windows boot settings 13->110 23 cmd.exe 13->23         started        25 cmd.exe 13->25         started        27 cmd.exe 13->27         started        29 notepad.exe 13->29         started        112 Creates files inside the volume driver (system volume information) 15->112 signatures5 process6 file7 68 C:\Users\user\Searches\dodov2_readit.txt, ASCII 19->68 dropped 70 C:\Users\user\Saved Games\dodov2_readit.txt, ASCII 19->70 dropped 72 C:\Users\user\Favorites\dodov2_readit.txt, ASCII 19->72 dropped 74 11 other malicious files 19->74 dropped 90 Antivirus detection for dropped file 19->90 92 Multi AV Scanner detection for dropped file 19->92 94 Machine Learning detection for dropped file 19->94 104 2 other signatures 19->104 31 cmd.exe 1 19->31         started        34 cmd.exe 1 19->34         started        36 cmd.exe 1 19->36         started        38 notepad.exe 19->38         started        96 May disable shadow drive data (uses vssadmin) 23->96 98 Deletes shadow drive data (may be related to ransomware) 23->98 40 conhost.exe 23->40         started        42 vssadmin.exe 23->42         started        44 WMIC.exe 23->44         started        100 Uses bcdedit to modify the Windows boot settings 25->100 46 3 other processes 25->46 102 Deletes the backup plan of Windows 27->102 48 2 other processes 27->48 signatures8 process9 signatures10 114 May disable shadow drive data (uses vssadmin) 31->114 116 Deletes shadow drive data (may be related to ransomware) 31->116 118 Uses bcdedit to modify the Windows boot settings 31->118 50 vssadmin.exe 1 31->50         started        52 WMIC.exe 1 31->52         started        54 conhost.exe 31->54         started        56 bcdedit.exe 8 1 34->56         started        58 bcdedit.exe 7 1 34->58         started        60 conhost.exe 34->60         started        120 Deletes the backup plan of Windows 36->120 62 conhost.exe 36->62         started        64 wbadmin.exe 3 36->64         started        process11 process12 66 conhost.exe 50->66         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720/
Threat name:
ByteCode-MSIL.Ransomware.HiddenTear
Create hunting rule
Status:
Malicious
First seen:
2023-02-04 20:06:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
26 of 26 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rv3ktjlx5jnnkjkvukbe3nxvq4sur7slzrd5i5wk4v3agodmi4qa._file
Verdict:
malicious
Similar samples:
0a00b6668696bf62e14ea1acaa855397730e24bd66b594d9602bee37c2de2e6e
Chaos
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Chaos
+ 4'157 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/230205-ww1v1sad27/
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
Program crash
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:
8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720
MD5 hash:
85db480564216a2842299723f2537f57
SHA1 hash:
97f5a29bb43312689de4c043dbea6a424319f407
Link:
https://www.unpac.me/results/8d8ffb3e-3a3d-455b-971a-69e0088748e3/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8d76a9a577ea/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/8d76a9a577ea5ad52555a2824db6f5872548fe4bcc47d476cae57603386c4720

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: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/360439/

Comments