MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d9771a04128e50870a96bc7ac8605982205011b723810a04a3411a1ac7eba05d. 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: d9771a04128e50870a96bc7ac8605982205011b723810a04a3411a1ac7eba05d
SHA3-384 hash: 793c53b0b33ab8ea721a49dab1f489780b7b40bc4eedd4ab894fd5f5a824e822c19169dc939f27189706ed42d48768ed
SHA1 hash: aa02e2999168ee64f6d3ccc3218a131881fa7c37
MD5 hash: 668a6e809dd0554cde27c3a28ea01c43
humanhash: xray-cold-lion-diet
File name:Comprovante de depósito.exe
Download: download sample
Signature Chaos
Create hunting rule
File size:387'072 bytes
First seen:2022-02-14 16:16:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 3072:JoZBUdr9Tw9LZ/wOQfZ0CQSveeSl0EpDwJ3DwGcgaIuC4uOe72teA+x3choO7JRz:Br9Tw3/c95crCoj+xcBAU/w6pwYl
Threatray 1'195 similar samples on MalwareBazaar
TLSH T13D84DF3429FA501AF173EE7D8BE8759BD56EB6A32703945D20B1038A4723D43DDC293A
File icon (PE):PE icon
dhash icon 60d898c8d8a8c08c (7 x Formbook, 7 x SnakeKeylogger, 3 x MassLogger)
Reporter abuse_ch
Tags:Chaos exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
315
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
chaos.zip
Verdict:
Malicious activity
Analysis date:
2022-02-15 02:05:11 UTC
Tags:
ransomware chaos
Link:
https://app.any.run/tasks/5053b196-ac0f-4639-8fe2-1b88ee498f80

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/241437/
Detection(s):
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
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 control.exe hydracrypt obfuscated packed ransomware replace.exe
Link:
https://www.filescan.io/uploads/620a809b54047500bb545172/reports/5c211e6e-0c09-4209-8e7b-fe6d6917cb17/overview
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/449102f8-6581-4f52-a5a7-de1aada98c71
Result
Threat name:
Chaos Voidcrypt
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/939549
Signature
.NET source code contains very large strings
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: Copying Sensitive Files with Credential Data
Sigma detected: Drops script at startup location
Sigma detected: File Created with System Process Name
Sigma detected: Modification of Boot Configuration
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Sigma detected: Suspcious CLR Logs Creation
Sigma detected: Suspicious Svchost Process
Sigma detected: System File Execution Location Anomaly
Sigma detected: WannaCry Ransomware
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 RansomwareGeneric
Yara detected Voidcrypt Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 572034 Sample: Comprovante de dep#U00f3sito.exe Startdate: 14/02/2022 Architecture: WINDOWS Score: 100 61 Sigma detected: WannaCry Ransomware 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus / Scanner detection for submitted sample 2->65 67 16 other signatures 2->67 8 Comprovante de dep#U00f3sito.exe 4 2->8         started        11 wbengine.exe 3 2->11         started        14 svchost.exe 1 2->14         started        16 2 other processes 2->16 process3 file4 53 C:\Users\user\AppData\Roaming\svchost.exe, PE32 8->53 dropped 55 C:\Users\user\...\svchost.exe:Zone.Identifier, ASCII 8->55 dropped 57 C:\...\Comprovante de dep#U00f3sito.exe.log, ASCII 8->57 dropped 18 svchost.exe 47 8->18         started        85 Creates files inside the volume driver (system volume information) 11->85 59 C:\Users\user\AppData\...\svchost.exe.log, ASCII 14->59 dropped signatures5 process6 file7 45 C:\Users\user\Searches\read_it.txt, ASCII 18->45 dropped 47 C:\Users\user\Pictures\read_it.txt, ASCII 18->47 dropped 49 C:\Users\user\Music\read_it.txt, ASCII 18->49 dropped 51 11 other malicious files 18->51 dropped 69 Antivirus detection for dropped file 18->69 71 Multi AV Scanner detection for dropped file 18->71 73 Machine Learning detection for dropped file 18->73 75 4 other signatures 18->75 22 cmd.exe 1 18->22         started        25 cmd.exe 1 18->25         started        27 cmd.exe 1 18->27         started        signatures8 process9 signatures10 77 May disable shadow drive data (uses vssadmin) 22->77 79 Deletes shadow drive data (may be related to ransomware) 22->79 81 Uses bcdedit to modify the Windows boot settings 22->81 29 WMIC.exe 1 22->29         started        31 conhost.exe 22->31         started        33 vssadmin.exe 1 22->33         started        35 bcdedit.exe 1 25->35         started        37 bcdedit.exe 1 25->37         started        39 conhost.exe 25->39         started        83 Deletes the backup plan of Windows 27->83 41 conhost.exe 27->41         started        43 wbadmin.exe 3 27->43         started        process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d9771a04128e50870a96bc7ac8605982205011b723810a04a3411a1ac7eba05d/
Threat name:
ByteCode-MSIL.Ransomware.FileCoder
Create hunting rule
Status:
Malicious
First seen:
2022-02-14 16:17:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
28 of 43 (65.12%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3f3rubasrziiocuwxr5mqyczqiqfaenxeoaqubfdienbvr7luboq._file
Verdict:
malicious
Label(s):
ryuk
Create hunting rule
Similar samples:
076ef4ca884b774579713f120329d8c3b7b973f41ff17a50f221cd3d3bbf1377
Chaos
1ba5ab55b7212ba92a9402677e30e45f12d98a98f78cdcf5864a67d6c264d053
Chaos
2169f4931cb7ddeffcb816a487491c0df2035162f3b6652352b42dbceaace7fd
Chaos
543e39242762d61e740f9c22c173f914cf01dd88c22ad61e65d2c18d9f5162ca
Chaos
b103fc649787eb1f6121df8174d0f16aaac736fb53f5f078d312871189285956
Chaos
db7681db479489fe2319d8eb00090749b4a56cb97cbe3c0f867a0f7a66a37f9f
Chaos
+ 1'185 additional samples on MalwareBazaar
Result
Malware family:
ryuk
Create hunting rule
Score:
  10/10
Tags:
family:chaos family:ryuk evasion ransomware spyware stealer
Link:
https://tria.ge/reports/220214-trdtksbefp/
Behaviour
Checks SCSI registry key(s)
Checks processor information in registry
Enumerates system info in registry
Interacts with shadow copies
Modifies data under HKEY_USERS
Modifies registry class
Opens file in notepad (likely ransom note)
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Sets desktop wallpaper using registry
Drops desktop.ini file(s)
Checks computer location settings
Drops startup file
Reads user/profile data of web browsers
Deletes backup catalog
Executes dropped EXE
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Chaos
Chaos Ransomware
Ryuk
Suspicious use of NtCreateProcessExOtherParentProcess
Unpacked files
SH256 hash:
d9771a04128e50870a96bc7ac8605982205011b723810a04a3411a1ac7eba05d
MD5 hash:
668a6e809dd0554cde27c3a28ea01c43
SHA1 hash:
aa02e2999168ee64f6d3ccc3218a131881fa7c37
Link:
https://www.unpac.me/results/fcfb5110-de91-4e42-81cc-9ed0dbaa777e/
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/d9771a04128e50870a96bc7ac8605982205011b723810a04a3411a1ac7eba05d

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/241437/

Comments