MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e64de38787850a88d92cb250314fb7bd6483a2f473b02d3c70daddcbf22ddabd. 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


Threat unknown


Vendor detections: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e64de38787850a88d92cb250314fb7bd6483a2f473b02d3c70daddcbf22ddabd
SHA3-384 hash: fcae10b29c1d75e54873a74f02542d67080a5bd1380c5008a878044b5d028277cbf524aa84a77723435f85a2cd163a6b
SHA1 hash: 086597c4765bb6dc916ef0dfabcde10d53f96a18
MD5 hash: 091d2029fe85499fd2b50e288de73008
humanhash: freddie-india-india-alpha
File name:Ransomware bootx64.efi covid21
Download: download sample
File size:122'368 bytes
First seen:2021-03-12 15:29:51 UTC
Last seen:2021-03-12 17:44:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash a50e815adb2cfe3e58d388c791946db8 (2 x njrat, 2 x DCRat, 1 x Lucifer)
ssdeep 3072:LVZ/VGS7rN+dilE/aQSwa6yPYdCKWAdIecout:LV28odiHJwTAKHI5oS
Threatray 44 similar samples on MalwareBazaar
TLSH A2C31397E0C42B7BE49081F8E96F6D742FA693592BD1C3B4D2E13B7C1D60202495D35E
Reporter JAMESWT_WT
Tags:covid-21 Ransomware WobbyChipMBR

Intelligence

File Origin
# of uploads :
2
# of downloads :
215
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
opera.exe
Verdict:
Suspicious activity
Analysis date:
2021-03-10 08:38:17 UTC
Tags:
covid19 ransomware covid-21
Link:
https://app.any.run/tasks/b0c660b2-da95-4e81-8677-d27b4ea3c61f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/123951/
Detection(s):
PUA.Win.Packer.Upx-4
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% subdirectories
Running batch commands
Creating a process with a hidden window
Creating a file
Launching a process
Creating a window
Sending a UDP request
Creating a process from a recently created file
Deleting a recently created file
Launching the default Windows debugger (dwwin.exe)
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Rewriting of the hard drive's master boot record
Enabling autorun by creating a file
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.
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans.evad
Score:
88 / 100
Link:
https://www.joesandbox.com/analysis/637931
Signature
Antivirus detection for dropped file
Contains functionality to access PhysicalDrive, possible boot sector overwrite
Contains functionality to infect the boot sector
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 367942 Sample: Ransomware bootx64.efi covid21 Startdate: 12/03/2021 Architecture: WINDOWS Score: 88 38 Antivirus detection for dropped file 2->38 40 Multi AV Scanner detection for dropped file 2->40 42 Multi AV Scanner detection for submitted file 2->42 44 2 other signatures 2->44 9 Ransomware bootx64.exe 10 2->9         started        12 s32.exe 1 2->12         started        process3 file4 34 C:\Users\user\AppData\Local\Temp\...\s32.exe, PE32 9->34 dropped 14 cmd.exe 3 3 9->14         started        36 C:FI\Boot\bootx64.efi, PE32+ 12->36 dropped 17 schtasks.exe 1 12->17         started        process5 signatures6 54 Modifies existing user documents (likely ransomware behavior) 14->54 19 s32.exe 1 14->19         started        22 notepad.exe 14->22         started        24 conhost.exe 14->24         started        26 timeout.exe 1 14->26         started        28 conhost.exe 17->28         started        process7 signatures8 46 Antivirus detection for dropped file 19->46 48 Multi AV Scanner detection for dropped file 19->48 50 Machine Learning detection for dropped file 19->50 52 2 other signatures 19->52 30 schtasks.exe 1 19->30         started        process9 process10 32 conhost.exe 30->32         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e64de38787850a88d92cb250314fb7bd6483a2f473b02d3c70daddcbf22ddabd/
Threat name:
Win32.Trojan.KillMbr
Create hunting rule
Status:
Malicious
First seen:
2021-03-10 20:08:11 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
22 of 27 (81.48%)
Threat level:
  5/5
Verdict:
malicious
Similar samples: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 34 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
bootkit persistence ransomware upx
Link:
https://tria.ge/reports/210312-slqr8nkk3n/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Modifies registry class
Opens file in notepad (likely ransom note)
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Adds Run key to start application
Writes to the Master Boot Record (MBR)
Executes dropped EXE
Unpacked files
SH256 hash:
cc3d12d976fd62d0c069093cf86851b1fa6f01c62394156bb3dd53dd2234f8e1
MD5 hash:
f3f55c0348932f34595c2f04c6a44ace
SHA1 hash:
a64fc3e9592a5f4821c10a386af18850c3d50222
Link:
https://www.unpac.me/results/abc89d21-6242-4861-bad5-3467be8f9292/
SH256 hash:
8bb603a2288f520d771d9d693237cdb5eec87b48f197587a13253b2c66f460aa
MD5 hash:
5b83b58bf6501d35787b00a8c5d0afd8
SHA1 hash:
7ab9f4df40e39c6dac08e046c12461eaaad33113
Link:
https://www.unpac.me/results/abc89d21-6242-4861-bad5-3467be8f9292/
SH256 hash:
e64de38787850a88d92cb250314fb7bd6483a2f473b02d3c70daddcbf22ddabd
MD5 hash:
091d2029fe85499fd2b50e288de73008
SHA1 hash:
086597c4765bb6dc916ef0dfabcde10d53f96a18
Link:
https://www.unpac.me/results/abc89d21-6242-4861-bad5-3467be8f9292/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Ransomware
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/e64de38787850a88d92cb250314fb7bd6483a2f473b02d3c70daddcbf22ddabd

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:suspicious_packer_section
Create hunting rule
Author:@j0sm1
Description:The packer/protector section names/keywords
Reference:http://www.hexacorn.com/blog/2012/10/14/random-stats-from-1-2m-samples-pe-section-names/
Rule name:upx_packed
Create hunting rule
Description:UPX packed file

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/123951/

Comments