MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1. 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


BlackMatte


Vendor detections: 16


Intelligence 16 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1
SHA3-384 hash: 0f8a80a8085ddbd7d758f7c4713546476dd0c864593a21eb2118c65b0c313bac9a2a03e8945f16692561152c8e295ded
SHA1 hash: 58bb54cd72323d0a73a3839e1b00b84d9260dcb3
MD5 hash: a7ed7796c84c9b27758f359705741455
humanhash: sodium-two-zebra-oklahoma
File name:9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1
Download: download sample
Signature BlackMatte
Create hunting rule
File size:150'528 bytes
First seen:2024-05-06 12:03:54 UTC
Last seen:2024-05-25 01:18:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 914685b69f2ac2ff61b6b0f1883a054d (34 x BlackMatter, 15 x LockBit, 1 x BlackMatte)
ssdeep 3072:/qJogYkcSNm9V7DFl6qYKCVNVMhyJQtSBT:/q2kc4m9tDFdY5NVM7t
TLSH T1A3E36B21F25ED0B3D87718F12726A17EB3EA4D2C1AA57803E6D50F48BCA19232F4595F
TrID 25.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
19.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.1% (.EXE) Win32 Executable (generic) (4504/4/1)
7.8% (.EXE) Win16/32 Executable Delphi generic (2072/23)
7.8% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter 0x0d4y
Tags:BlackMatte exe lockbit

Intelligence

File Origin
# of uploads :
2
# of downloads :
405
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
lockbit
Create hunting rule
ID:
1
File name:
9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1.exe
Verdict:
Malicious activity
Analysis date:
2024-05-06 12:04:22 UTC
Tags:
lockbit ransomware
Link:
https://app.any.run/tasks/e9001103-b326-43b4-a620-73608d9fac8a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Ransomware.BlackMatter-9970818-0
Create hunting rule

Win.Ransomware.Lazy-10003135-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Сreating synchronization primitives
Launching a service
Changing a file
Moving a recently created file
Delayed writing of the file
Reading critical registry keys
Creating a file in the %AppData% directory
Creating a file in the %AppData% subdirectories
Moving a file to the %AppData% subdirectory
Modifies multiple files
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Moving a file to the %temp% directory
Stealing user critical data
Creating a file in the mass storage device
Forced shutdown of a browser
Encrypting user's files
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint packed
Link:
https://www.filescan.io/uploads/6638c7379dc4dda9c0e493bb/reports/7140312f-abd7-42dd-b3fb-8372867b42cf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1
Malware family:
BlackMatter Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f71be198-3f46-424f-aa95-e9ab4be7900f
Result
Threat name:
LockBit ransomware
Create hunting rule
Detection:
malicious
Classification:
rans.phis.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1436723
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Changes the wallpaper picture
Contains functionality to detect hardware virtualization (CPUID execution measurement)
Deletes itself after installation
Found potential ransomware demand text
Found ransom note / readme
Found Tor onion address
Hides threads from debuggers
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Overwrites Mozilla Firefox settings
Tries to harvest and steal browser information (history, passwords, etc)
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Writes to foreign memory regions
Yara detected LockBit ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1436723 Sample: c8JakemodH.exe Startdate: 06/05/2024 Architecture: WINDOWS Score: 100 40 Multi AV Scanner detection for domain / URL 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 Antivirus detection for URL or domain 2->44 46 5 other signatures 2->46 8 c8JakemodH.exe 32 1002 2->8         started        12 ONENOTE.EXE 2->12         started        process3 file4 24 C:\Users\user\...\1239919175.bQ8ODxIi2, COM 8->24 dropped 26 {1AC14E77-02E7-4E5...nfo32_exe.bQ8ODxIi2, COM 8->26 dropped 28 {1AC14E77-02E7-4E5...frgui_exe.bQ8ODxIi2, DOS 8->28 dropped 30 118 other malicious files 8->30 dropped 48 Found potential ransomware demand text 8->48 50 Found Tor onion address 8->50 52 Contains functionality to detect hardware virtualization (CPUID execution measurement) 8->52 54 7 other signatures 8->54 14 C9C8.tmp 8->14         started        18 splwow64.exe 8->18         started        signatures5 process6 file7 32 C:\Users\user\Desktop\c8JakemodH.exe, data 14->32 dropped 34 C:\Users\user\Desktop\ZZZZZZZZZZZZZZ (copy), data 14->34 dropped 36 C:\Users\user\Desktop\YYYYYYYYYYYYYY (copy), data 14->36 dropped 38 24 other malicious files 14->38 dropped 56 Antivirus detection for dropped file 14->56 58 Multi AV Scanner detection for dropped file 14->58 60 Contains functionality to detect hardware virtualization (CPUID execution measurement) 14->60 62 3 other signatures 14->62 20 cmd.exe 14->20         started        signatures8 process9 process10 22 conhost.exe 20->22         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1
Detection:
lockbit
Create hunting rule
Link:
https://mwdb.cert.pl/sample/9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1/
Threat name:
Win32.Ransomware.Lockbit
Create hunting rule
Status:
Malicious
First seen:
2024-05-06 12:04:05 UTC
File Type:
PE (Exe)
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ts3wbefxirl3ep6t3l4k6r4tkeglssuxabdn4dve2o5qkut3ulqq._file
Verdict:
malicious
Result
Malware family:
lockbit
Create hunting rule
Score:
  10/10
Tags:
family:lockbit ransomware spyware stealer
Link:
https://tria.ge/reports/240506-n8k2bsec65/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Control Panel
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in System32 directory
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Drops desktop.ini file(s)
Checks computer location settings
Deletes itself
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Renames multiple (352) files with added filename extension
Unpacked files
SH256 hash:
9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1
MD5 hash:
a7ed7796c84c9b27758f359705741455
SHA1 hash:
58bb54cd72323d0a73a3839e1b00b84d9260dcb3
Detections:
win_lockbit_auto
Create hunting rule
Darkside
Create hunting rule
Link:
https://www.unpac.me/results/735f5a98-dbc6-4f2d-b1d4-cd325ceb4d56/
Parent samples :
5c004c361f19687d6c34c6d49c81b4736e8223f183b63aafec635613daae89ad
9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/9cb76090b744/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/9cb76090b74457b23fd3daf8af4793510cb94a970046de0ea4d3bb05527ba2e1

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:CRIME_WIN32_RANSOM_BLACKMATTER
Create hunting rule
Author:Rony (@r0ny_123)
Description:Detects Blackmatter ransomware
Rule name:Darkside
Create hunting rule
Author:@bartblaze
Description:Identifies Darkside ransomware.
Rule name:Windows_Ransomware_Lockbit_369e1e94
Create hunting rule
Author:Elastic Security
Rule name:win_lockbit_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.lockbit.

File information

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

Malpedia
Malpedia
https://malpedia.caad.fkie.fraunhofer.de/details/win.lockbit

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
WIN_BASE_APIUses Win Base APIKERNEL32.dll::GetCommandLineW
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::GetFileAttributesW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::CreateWindowExW

Comments