MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90c54543aaf085e00879d4fe98a6dfb8148548f374828d50b6e3ac44668138b2. 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



Dharma


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments

SHA256 hash: 90c54543aaf085e00879d4fe98a6dfb8148548f374828d50b6e3ac44668138b2
SHA3-384 hash: dd227b05312cb9b6fc8b23a133702c8cd326543cacb8542dce3374ebd05f15027e742c3af6ac893c4b37019677a64c78
SHA1 hash: d9102824ed07a4c29bd364fd0f4e08df1f5dc1d9
MD5 hash: 37c1ee5708d1f5e45cea516059fd12f8
humanhash: juliet-alanine-alabama-spaghetti
File name:90c54543aaf085e00879d4fe98a6dfb8148548f374828d50b6e3ac44668138b2
Download: download sample
Signature Dharma
File size:94'720 bytes
First seen:2020-09-11 08:08:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f86dec4a80961955a89e7ed62046cc0e (42 x Dharma)
ssdeep 1536:mBwl+KXpsqN5vlwWYyhY9S4AiB45oOmHd/0308Xf9Wdj9nIgnZd:Qw+asqN5aW/hLYBjOmHc19wIg
Threatray 29 similar samples on MalwareBazaar
TLSH 7793AD29D921D039E4A250FFCBF75AFD9D384B10130384DB97C11D89AB8A5D5F932A23
Reporter @JAMESWT_MHT
Tags:Crysis Dharma Ransomware

Intelligence


File Origin
# of uploads :
1
# of downloads :
3'736
Origin country :
IT IT
Mail intelligence
No data
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the system32 directory
Creating a file
Launching cmd.exe command interpreter
Creating a process with a hidden window
Enabling the 'hidden' option for recently created files
Changing a file
Creating a file in the Program Files directory
Creating a file in the Program Files subdirectories
Modifying an executable file
Replacing executable files
Moving a file to the Program Files subdirectory
Launching a process
Launching a service
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a file in the mass storage device
Deleting volume shadow copies
Enabling autorun by creating a file
Infecting executable files
Result
Threat name:
Crysis Wadhrama
Detection:
malicious
Classification:
rans.adwa.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an autostart registry key pointing to binary in C:\Windows
Creates files in the recycle bin to hide itself
Deletes shadow drive data (may be related to ransomware)
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the startup folder
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 submitted file
Writes many files with high entropy
Yara detected Crysis Ransomware
Yara detected Wadhrama Ransomware
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 284404 Sample: MEO2x2MUfC Startdate: 11/09/2020 Architecture: WINDOWS Score: 100 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus detection for dropped file 2->40 42 Antivirus / Scanner detection for submitted sample 2->42 44 8 other signatures 2->44 7 MEO2x2MUfC.exe 1 501 2->7         started        11 MEO2x2MUfC.exe 2->11         started        13 MEO2x2MUfC.exe 2->13         started        15 SearchUI.exe 2->15         started        process3 file4 26 C:\Windows\System32\MEO2x2MUfC.exe, PE32 7->26 dropped 28 C:\Users\user\AppData\...\MEO2x2MUfC.exe, PE32 7->28 dropped 30 cab1.cab.id-88D1F6...echmail.info].error, DOS 7->30 dropped 32 85 other files (71 malicious) 7->32 dropped 46 Creates files in the recycle bin to hide itself 7->46 48 Drops PE files to the startup folder 7->48 50 Creates an autostart registry key pointing to binary in C:\Windows 7->50 52 Writes many files with high entropy 7->52 17 cmd.exe 1 7->17         started        signatures5 process6 signatures7 34 May disable shadow drive data (uses vssadmin) 17->34 36 Deletes shadow drive data (may be related to ransomware) 17->36 20 conhost.exe 17->20         started        22 vssadmin.exe 1 17->22         started        24 mode.com 1 17->24         started        process8
Threat name:
Win32.Ransomware.Crysis
Status:
Malicious
First seen:
2020-08-29 13:33:40 UTC
File Type:
PE (Exe)
AV detection:
27 of 28 (96.43%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
ransomware family:dharma persistence spyware
Behaviour
Interacts with shadow copies
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Drops file in System32 directory
Modifies service
Adds Run key to start application
Drops desktop.ini file(s)
Drops startup file
Reads user/profile data of web browsers
Deletes shadow copies
Dharma

YARA Signatures


MalareBazaar uses YARA rules from several public and non-public repositories, such as Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious proccess dumps they may create. Please note that only results from TLP:WHITE rules are being displayeyd.

Rule name:MAL_Ransomware_Wadhrama
Author:Florian Roth
Description:Detects Wadhrama Ransomware via Imphash
Reference:Internal Research
Rule name:win_dharma_auto
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments