MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ca6de5ed4051ec20b8612d30b3962397fa0b6e209a2d223cef37708150e48df4. 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


DiskWriter


Vendor detections: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ca6de5ed4051ec20b8612d30b3962397fa0b6e209a2d223cef37708150e48df4
SHA3-384 hash: e702d5ffd588116d94d8e2e97922ae78bb7ba54688ac6df1b99c80883c139aeaa4b82e89caeb4364678b25339aad05ea
SHA1 hash: 4fb8476faa85c3ba287c170ebd749331488be2f1
MD5 hash: 174dd7939ab780f7cf8118f9a8967afe
humanhash: king-golf-black-two
File name:ca6de5ed4051ec20b8612d30b3962397fa0b6e209a2d223cef37708150e48df4
Download: download sample
Signature DiskWriter
Create hunting rule
File size:925'696 bytes
First seen:2022-05-20 11:16:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 332f7ce65ead0adfb3d35147033aabe9 (81 x XRed, 18 x SnakeKeylogger, 7 x DarkComet)
ssdeep 12288:gMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9LeFKH5O30Bj:gnsJ39LyjbJkQFMhmC+6GD9EIE30p
Threatray 50 similar samples on MalwareBazaar
TLSH T15F157D23F2D18477D1731A3C8C5BA3A5983ABE512E38794E3BE81E4C5F3D68129192D7
TrID 72.8% (.EXE) Win32 Executable Borland Delphi 7 (664796/42/58)
21.6% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
1.5% (.EXE) Win32 Executable Delphi generic (14182/79/4)
1.1% (.EXE) Win64 Executable (generic) (10523/12/4)
1.0% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter JAMESWT_WT
Tags:DiskWriter EFIlock exe Killmbr

Intelligence

File Origin
# of uploads :
1
# of downloads :
266
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
g.exe
Verdict:
Malicious activity
Analysis date:
2021-08-03 14:30:38 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/67105546-d54b-459e-9ee4-33caad127b06

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
WobbyChipMBR
Create hunting rule
Link:
https://www.capesandbox.com/analysis/272966/
Detection(s):
PUA.Win.Packer.D1s1g-5
Create hunting rule

PUA.Win.Packer.D1s1g-1
Create hunting rule

PUA.Win.Packer.D1s1g-2
Create hunting rule

Win.Malware.Ulise-7669076-0
Create hunting rule

Win.Ransomware.Efilock-9825053-0
Create hunting rule

Win.Trojan.Emotet-9850453-0
Create hunting rule

Win.Trojan.Generic-9936029-0
Create hunting rule

Win.Malware.Delf-6899401-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for synchronization primitives
Creating a file
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Moving a recently created file
Launching a process
Creating a process with a hidden window
Creating a file in the %temp% directory
Moving a file to the %temp% directory
Modifying an executable file
Launching the default Windows debugger (dwwin.exe)
DNS request
Sending an HTTP GET request
Sending a UDP request
Sending a custom TCP request
Searching for the window
Сreating synchronization primitives
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Rewriting of the hard drive's master boot record
Enabling autorun by creating a file
Infecting executable files
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/19205/overview
Behaviour
MalwareBazaar
CheckCmdLine
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd.exe control.exe evasive greyware hacktool hacktool keylogger macros macros-on-close macros-on-open packed remote.exe shell32.dll
Link:
https://www.filescan.io/uploads/628778896bd27afab4633637/reports/3122c1fd-fd2c-4d32-a9b0-ce6f711fb6a6/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:
EFIlock
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/915d8d11-eee6-4ebb-9b9a-0a2515d52393
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/998512
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to access PhysicalDrive, possible boot sector overwrite
Contains functionality to detect sleep reduction / modifications
Contains functionality to infect the boot sector
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with functions possibly related to WSH operations (process, registry, environment, or keystrokes)
Drops PE files to the document folder of the user
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Schedule system process
Snort IDS alert for network traffic
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 631009 Sample: C8ooVHAEHT Startdate: 20/05/2022 Architecture: WINDOWS Score: 100 57 Snort IDS alert for network traffic 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 Antivirus detection for URL or domain 2->61 63 12 other signatures 2->63 8 C8ooVHAEHT.exe 1 6 2->8         started        11 ._cache_C8ooVHAEHT.exe 1 2->11         started        13 EXCEL.EXE 23 16 2->13         started        16 Synaptics.exe 2->16         started        process3 dnsIp4 41 C:\Users\user\...\._cache_C8ooVHAEHT.exe, PE32 8->41 dropped 43 C:\ProgramData\Synaptics\Synaptics.exe, PE32 8->43 dropped 45 C:\ProgramData\Synaptics\RCX3917.tmp, PE32 8->45 dropped 47 C:\...\Synaptics.exe:Zone.Identifier, ASCII 8->47 dropped 18 ._cache_C8ooVHAEHT.exe 1 8->18         started        22 Synaptics.exe 286 8->22         started        25 schtasks.exe 11->25         started        55 192.168.2.1 unknown unknown 13->55 file5 process6 dnsIp7 37 C:FI\Boot\bootx64.efi, PE32+ 18->37 dropped 65 Antivirus detection for dropped file 18->65 67 Multi AV Scanner detection for dropped file 18->67 69 Machine Learning detection for dropped file 18->69 75 3 other signatures 18->75 27 schtasks.exe 1 18->27         started        49 docs.google.com 142.250.186.46, 443, 49752, 49753 GOOGLEUS United States 22->49 51 freedns.afraid.org 69.42.215.252, 49755, 80 AWKNET-LLCUS United States 22->51 53 xred.mooo.com 22->53 39 C:\Users\user\Documents\~$cache1, PE32 22->39 dropped 71 Drops PE files to the document folder of the user 22->71 73 Contains functionality to detect sleep reduction / modifications 22->73 29 WerFault.exe 22->29         started        31 WerFault.exe 22->31         started        33 conhost.exe 25->33         started        file8 signatures9 process10 process11 35 conhost.exe 27->35         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ca6de5ed4051ec20b8612d30b3962397fa0b6e209a2d223cef37708150e48df4/
Threat name:
Win32.Backdoor.DarkComet
Create hunting rule
Status:
Malicious
First seen:
2021-05-16 06:24:29 UTC
File Type:
PE (Exe)
Extracted files:
67
AV detection:
25 of 26 (96.15%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
2ca6095540ff0d50021a7191653b2d002cf1a4122330ecbd4e1891c67849e1b0
DiskWriter
5ff2763a7af9c5e8d274be89a3df9e75d9a0b281878def38c44085395178f01e
DiskWriter
7110059a2bb0e2b4e6ee39ff235c283864152200d0daca4fb123f3b7c7315095
DiskWriter
a4b821d0cadc92c344c8b60f5290a5e5520fd1fb3813b88c529c48d285b72c63
DiskWriter
addaf10bbef45a2bb941b2b984ecb26656e4554bbd7adc2baf6e14451b296918
DiskWriter
b2fb5fa4aab3329297f4f06a3596a9f640826252f473cc0f62b21c8f1a8b0cfa
DiskWriter
b634a8041412c63c42bbc10264b4c70b6a84d8aeb01a7d75d89731bb551835ac
DiskWriter
dd23a9dd9ad1c9be3580c478179915bfcc79a23bc49161f49ee08111ceab57eb
DiskWriter
+ 40 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
bootkit persistence
Link:
https://tria.ge/reports/220520-ndn5hadgfn/
Behaviour
Creates scheduled task(s)
Modifies registry class
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)
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
ca6de5ed4051ec20b8612d30b3962397fa0b6e209a2d223cef37708150e48df4
MD5 hash:
174dd7939ab780f7cf8118f9a8967afe
SHA1 hash:
4fb8476faa85c3ba287c170ebd749331488be2f1
Link:
https://www.unpac.me/results/02e47ca1-9f86-4332-b017-03d28b6ab0fa/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ca6de5ed4051/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/ca6de5ed4051ec20b8612d30b3962397fa0b6e209a2d223cef37708150e48df4

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:MALWARE_Win_WobbyChipMBR
Create hunting rule
Author:ditekSHen
Description:Detects WobbyChipMBR / Covid-21 ransomware
Rule name:WobbyChipMBR
Create hunting rule
Author:ditekSHen
Description:Detects WobbyChipMBR / Covid-21 ransomware

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/272966/

Comments