MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40c436f4ac5193735d05cfe2375d29449a90269a718fba9d7af179317688e2fb. 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


LockBit


Vendor detections: 13


Intelligence 13 IOCs YARA 9 File information Comments
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SHA256 hash: 40c436f4ac5193735d05cfe2375d29449a90269a718fba9d7af179317688e2fb
SHA3-384 hash: e51cc7310f5bd96126c997454154989a3463aea3940bdf376e11ca5c4ba9703afebdbb355a34ad191de65ec0a5d3a235
SHA1 hash: 743c801b172cc10991a740bfe412c55306b4ea2b
MD5 hash: e88915755fc23e17693b461a157040b2
humanhash: hawaii-king-kansas-ceiling
File name:40c436f4ac5193735d05cfe2375d29449a90269a718fba9d7af179317688e2fb
Download: download sample
Signature LockBit
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File size:982'528 bytes
First seen:2022-03-01 12:04:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 216df81b1ef7bc2aa8ec52bbeef137c9 (38 x LockBit)
ssdeep 24576:uLjr3s2nScu1i1tz3f++5kRzFxk7rMxNeR1R9qpdSF:Ujrc2So1Ff+B3k796U
TLSH T1EE253A0593018F96C813207951FE8DB3A877073192BF1CE6A78466DC83B2FA5776B366
Reporter vxunderground
Tags:exe lockbit Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
835
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Lockbit
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Link:
https://www.capesandbox.com/analysis/245761/
Detection(s):
Win.Trojan.Obfus-43
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Win.Ransomware.Lockbit-9886605-0
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Win.Ransomware.LockBit-9888870-1
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Adding an access-denied ACE
Сreating synchronization primitives
Creating a file in the Windows subdirectories
Changing a file
Creating a file
Enabling the 'hidden' option for recently created files
Creating a file in the Program Files subdirectories
Moving a recently created file
Moving a file to the Program Files subdirectory
Modifying an executable file
Creating a window
Searching for synchronization primitives
Running batch commands
Creating a process with a hidden window
Replacing files
Launching a service
Launching a process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Creating a file in the mass storage device
Deleting volume shadow copies
Preventing system recovery
Encrypting user's files
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/7736/overview
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm cmd.exe evasive exploit explorer.exe obfuscated shell32.dll
Link:
https://www.filescan.io/uploads/621e0bf30cd58dbd925a945e/reports/a09995ad-e9dd-43cd-91b8-8a349db93f32/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:
LockBit Ransomware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/0f7641d4-2ad1-4d1a-814e-dc07e75bb72b
Result
Threat name:
LockBit ransomware
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Detection:
malicious
Classification:
rans.spre.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/948122
Signature
Antivirus / Scanner detection for submitted sample
Connects to many different private IPs (likely to spread or exploit)
Contains functionality to hide a thread from the debugger
Creates autostart registry keys with suspicious names
Deletes shadow drive data (may be related to ransomware)
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found ransom note / readme
Found Tor onion address
Hides threads from debuggers
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 domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Modification of Boot Configuration
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Sigma detected: WannaCry Ransomware
Spreads via windows shares (copies files to share folders)
Uses bcdedit to modify the Windows boot settings
Yara detected LockBit ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 580599 Sample: oE9wypNncC Startdate: 01/03/2022 Architecture: WINDOWS Score: 100 32 store-images.s-microsoft.com 2->32 46 Multi AV Scanner detection for domain / URL 2->46 48 Sigma detected: WannaCry Ransomware 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 10 other signatures 2->52 8 oE9wypNncC.exe 8 107 2->8         started        13 oE9wypNncC.exe 2->13         started        15 oE9wypNncC.exe 2->15         started        signatures3 process4 dnsIp5 34 192.168.2.100 unknown unknown 8->34 36 192.168.2.101 unknown unknown 8->36 38 98 other IPs or domains 8->38 28 C:\Users\user\...\Restore-My-Files.txt, ASCII 8->28 dropped 30 1b2cdf28-827b-45a6...p_meta_body.lockbit, DOS 8->30 dropped 54 Connects to many different private IPs (likely to spread or exploit) 8->54 56 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 8->56 58 Creates autostart registry keys with suspicious names 8->58 60 6 other signatures 8->60 17 cmd.exe 1 8->17         started        file6 signatures7 process8 signatures9 40 May disable shadow drive data (uses vssadmin) 17->40 42 Deletes shadow drive data (may be related to ransomware) 17->42 44 Uses bcdedit to modify the Windows boot settings 17->44 20 bcdedit.exe 1 17->20         started        22 bcdedit.exe 1 17->22         started        24 WMIC.exe 1 17->24         started        26 2 other processes 17->26 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/40c436f4ac5193735d05cfe2375d29449a90269a718fba9d7af179317688e2fb/
Threat name:
Win32.Ransomware.LockBit
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Status:
Malicious
First seen:
2022-02-27 21:57:59 UTC
File Type:
PE (Exe)
AV detection:
39 of 43 (90.70%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=idcdn5fmkgjxgxifz7rdoxjjisnjaju2ogh3vhl26f4tc5ui4l5q._file
Verdict:
malicious
Label(s):
ryuk
Create hunting rule
Result
Malware family:
lockbit
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Score:
  10/10
Tags:
family:lockbit evasion persistence ransomware
Link:
https://tria.ge/reports/220301-n86yssbedk/
Behaviour
Interacts with shadow copies
Modifies Control Panel
Modifies registry class
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Program Files directory
Drops file in System32 directory
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Checks computer location settings
Modifies extensions of user files
Deletes shadow copies
Modifies boot configuration data using bcdedit
Lockbit
Unpacked files
SH256 hash:
40c436f4ac5193735d05cfe2375d29449a90269a718fba9d7af179317688e2fb
MD5 hash:
e88915755fc23e17693b461a157040b2
SHA1 hash:
743c801b172cc10991a740bfe412c55306b4ea2b
Link:
https://www.unpac.me/results/953517f9-e56a-4101-b867-3e3fb5b39fe4/
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/40c436f4ac5193735d05cfe2375d29449a90269a718fba9d7af179317688e2fb

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:ICMLuaUtil_UACMe_M41
Create hunting rule
Author:Marius 'f0wL' Genheimer <hello@dissectingmalwa.re>
Description:A Yara rule for UACMe Method 41 -> ICMLuaUtil Elevated COM interface
Reference:https://github.com/hfiref0x/UACME
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding registry key / value combination indicative of disabling Windows Defedner features
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)
Rule name:INDICATOR_SUSPICIOUS_USNDeleteJournal
Create hunting rule
Author:ditekSHen
Description:Detects executables containing anti-forensic artifcats of deletiing USN change journal. Observed in ransomware
Rule name:Lockbit
Create hunting rule
Author:kevoreilly
Description:Lockbit Payload
Rule name:Lockbit2_Jul21
Create hunting rule
Author:CB @ ATR
Description:simple rule to detect latest Lockbit ransomware Jul 2021
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:XOREngine_Misc_XOR_Func
Create hunting rule
Author:smiller cc @florian @wesley idea on implementation with yara's built in XOR function
Description:Use with care, https://twitter.com/cyb3rops/status/1237042104406355968

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/245761/

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