MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44. 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
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SHA256 hash: 8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
SHA3-384 hash: ee9d41c7bb450b1c1b7f29c0a9b2fdce85718da90806878bfb818c89ccc3ce6e40aad96ca511b010bb07e75cc3ec69ef
SHA1 hash: 7934e6bc9489933c0af8dfe7bdff482fc6759bdc
MD5 hash: adb3dde4a25e596c16ced4cdfc6ff8dd
humanhash: maine-mars-colorado-one
File name:1.exe
Download: download sample
Signature Chaos
Create hunting rule
File size:976'384 bytes
First seen:2023-07-25 06:31:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'115 x AgentTesla, 20'117 x Formbook, 12'357 x SnakeKeylogger)
ssdeep 12288:vEPMLC814R2hig4tHkg2W+AU+R2TjsPvEpv8LpgUO4EP3SL98l0zmWHQuTwYzzjc:/ztQE1ov2AZ9HjkftWy3P
Threatray 249 similar samples on MalwareBazaar
TLSH T13325172429EA5019F373AE754BE4F5BEDA5EBF632702941920D00F4B3623989DD8273D
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 00a000d4d4008000 (2 x Chaos)
Reporter petrovic
Tags:Chaos exe Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
720
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RANSOM.exe
Verdict:
Malicious activity
Analysis date:
2023-07-25 04:09:24 UTC
Tags:
ransomware
Link:
https://app.any.run/tasks/27a43d25-e655-42c6-9c99-f5892451255e

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/431866/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.972-1.UNOFFICIAL
Create hunting rule

Win.Ransomware.Hydracrypt-9878672-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Modifies multiple files
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
Gathering data
Verdict:
Malicious
Labled as:
Ransom.Hiddentear.A.Generic
Link:
https://www.hybrid-analysis.com/sample/8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
Malware family:
CHAOS Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c6a70551-729d-4618-ab04-152146e66b53
Result
Threat name:
Chaos
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1278836
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
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 sample
Malicious sample detected (through community Yara rule)
May disable shadow drive data (uses vssadmin)
May encrypt documents and pictures (Ransomware)
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: 1278836 Sample: 1.exe Startdate: 25/07/2023 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 7 other signatures 2->85 8 1.exe 4 2->8         started        12 svchost.exe 6 2->12         started        14 wbuser.exe 2->14         started        16 4 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\Local\...\1.exe.log, CSV 8->77 dropped 101 Drops PE files with benign system names 8->101 18 svchost.exe 3 54 8->18         started        103 Deletes shadow drive data (may be related to ransomware) 12->103 105 Uses bcdedit to modify the Windows boot settings 12->105 22 cmd.exe 12->22         started        24 cmd.exe 12->24         started        26 cmd.exe 12->26         started        28 notepad.exe 12->28         started        107 Creates files inside the volume driver (system volume information) 14->107 signatures5 process6 file7 65 C:\Users\user\Pictures\PLEASEREAD.txt, ASCII 18->65 dropped 67 C:\Users\user\Pictures\...\PLEASEREAD.txt, ASCII 18->67 dropped 69 C:\Users\user\Music\PLEASEREAD.txt, ASCII 18->69 dropped 71 11 other malicious files 18->71 dropped 87 Multi AV Scanner detection for dropped file 18->87 89 Deletes shadow drive data (may be related to ransomware) 18->89 91 Writes a notice file (html or txt) to demand a ransom 18->91 99 2 other signatures 18->99 30 cmd.exe 1 18->30         started        33 cmd.exe 1 18->33         started        35 cmd.exe 18->35         started        37 notepad.exe 18->37         started        93 May disable shadow drive data (uses vssadmin) 22->93 39 conhost.exe 22->39         started        41 vssadmin.exe 22->41         started        43 WMIC.exe 22->43         started        95 Uses bcdedit to modify the Windows boot settings 24->95 45 3 other processes 24->45 97 Deletes the backup plan of Windows 26->97 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/8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44/
Threat name:
ByteCode-MSIL.Ransomware.HiddenTear
Create hunting rule
Status:
Malicious
First seen:
2023-07-25 06:32:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
34 of 38 (89.47%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=q4tqshf3rhs6ghxleub77kreeya4rbao5yexh7lc73prws2yvnca._file
Verdict:
malicious
Similar samples:
1b4d73a9a7c6d2163e7378c97f01fed223be9daa6acb71c81b11491907473f89
Chaos
290072a9e1cf3872487cf586a592be534abc894d20ffd1121fe8338f1b52b451
Chaos
7826978642c568f975e2b65d1575fdf92e634f7c80db2c86c9d7c8066e8955b8
Chaos
9bae73eacfbc2ced0d12dee97f31c186be0b8080c3471ce497b058081ccaeeb6
Chaos
b103fc649787eb1f6121df8174d0f16aaac736fb53f5f078d312871189285956
Chaos
c797991107d261423bebab5f3cd3b44b5a63e3925baaf53ed8b0ba77f5c7fb7b
Chaos
e2d34f88d976886a14614a425216384c72d4398f10133a4373d3b625bc405a22
Chaos
+ 239 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/230725-hal8vabe81/
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
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
Renames multiple (186) files with added filename extension
Renames multiple (188) files with added filename extension
Chaos
Chaos Ransomware
Unpacked files
SH256 hash:
8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44
MD5 hash:
adb3dde4a25e596c16ced4cdfc6ff8dd
SHA1 hash:
7934e6bc9489933c0af8dfe7bdff482fc6759bdc
Detections:
ChaosRansomware
Create hunting rule
Link:
https://www.unpac.me/results/ad72d57f-f309-4e57-b3ff-884568e62b75/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8727091cbb89/report/overview.html
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/8727091cbb89e5e31eeb2503ffaa242601c8840eee0973fd62fedf1b4b58ab44

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/431866/

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