MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee. 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


Lynx


Vendor detections: 14


Intelligence 14 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee
SHA3-384 hash: 83f6375b99acd5ae9e653be20355183b2b56ad8ab1fc43985e43de85c0e5b218ad00cce6f0ce1679455dc3b594639297
SHA1 hash: 5338cae40e5419a0567b8162c52484f390284f15
MD5 hash: 57f45c0738af9cd49c61984ea99f83ca
humanhash: earth-october-gee-earth
File name:b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee
Download: download sample
Signature Lynx
Create hunting rule
File size:167'936 bytes
First seen:2025-02-22 06:22:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b236e3a7e5fec7df716fb0039d0fca72 (2 x Lynx, 2 x INC)
ssdeep 3072:2jv9TtA6pzarOLgSua/iw6kzgxqexPTjrn7FwhGVKlCTS6D1ftRXFxIAWddPpYXQ:27IqexPTjrnp5MSXFVWd5SFlYu9P3R1m
Threatray 10 similar samples on MalwareBazaar
TLSH T1EDF38C68B3E08035E977183105F4DAF5A97EB8301B11A9DB6B8447765E31AD3C634B3B
TrID 32.2% (.EXE) Win64 Executable (generic) (10522/11/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter TheRavenFile
Tags:exe Lynx Ransomware


Avatar
RakeshKrish12
Source: https://github.com/TheRavenFile/Daily-Hunt/blob/main/Lynx%20Ransomware

Intelligence

File Origin
# of uploads :
1
# of downloads :
318
Origin country :
IN IN
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee.exe
Verdict:
Malicious activity
Analysis date:
2025-02-23 02:55:16 UTC
Tags:
lynx ransomware
Link:
https://app.any.run/tasks/f2133fa7-d303-49c4-bdbc-46cb81ca5a44

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67b96d18a0fd713c335c500b
Tags:
ransomware virus blic
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Changing a file
Modifies multiple files
Replacing files
Reading critical registry keys
Creating a file in the %temp% directory
Launching a service
Creating a file in the system32 subdirectories
Creating a window
Searching for the window
Creating a file in the mass storage device
Stealing user critical data
Encrypting user's files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
crypto filecoder inc lynx microsoft_visual_cc obfuscated ransomware ransomware
Link:
https://www.filescan.io/uploads/67b96d203afc3763bec10881/reports/0d33334f-729c-44cd-b376-7e59c9dc9281/overview
Verdict:
Malicious
Labled as:
Ransom.Imps.Generic
Link:
https://www.hybrid-analysis.com/sample/b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee
Malware family:
Lynx Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fb850243-ce8d-4fd9-bef6-27e4fae19365
Result
Threat name:
Lynx
Create hunting rule
Detection:
malicious
Classification:
rans.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1621667
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Changes the wallpaper picture
Contains functionalty to change the wallpaper
Document exploit detected (process start blacklist hit)
Found potential ransomware demand text
Found ransom note / readme
Found Tor onion address
Joe Sandbox ML detected suspicious sample
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for submitted file
Writes many files with high entropy
Yara detected Lynx Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1621667 Sample: QI9phvm1zJ.exe Startdate: 22/02/2025 Architecture: WINDOWS Score: 100 28 Antivirus detection for URL or domain 2->28 30 Antivirus / Scanner detection for submitted sample 2->30 32 Multi AV Scanner detection for submitted file 2->32 34 6 other signatures 2->34 6 QI9phvm1zJ.exe 408 2->6         started        10 ONENOTE.EXE 2->10         started        12 FXSSVC.exe 18 6 2->12         started        14 onenoteim.exe 2->14         started        process3 file4 20 C:\ProgramData\...ventStore.db.LYNX (copy), COM 6->20 dropped 22 C:\ProgramData\Microsoft\...ventStore.db, COM 6->22 dropped 24 C:\README.txt, ASCII 6->24 dropped 26 260 other files (258 malicious) 6->26 dropped 36 Contains functionalty to change the wallpaper 6->36 38 Found potential ransomware demand text 6->38 40 Found Tor onion address 6->40 42 3 other signatures 6->42 16 conhost.exe 6->16         started        18 OfficeC2RClient.exe 14 25 10->18         started        signatures5 process6
Score:
93%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee/
Threat name:
Win32.Ransomware.Lynxransom
Create hunting rule
Status:
Malicious
First seen:
2024-09-22 02:44:15 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wn4lp3ypsbrvr3wfsv3xuuhzxnompo3ggxqpamowloayujv5ytxa._file
Verdict:
malicious
Label(s):
lynxransomware
Create hunting rule
Similar samples:
80908a51e403efd47b1d3689c3fb9447d3fb962d691d856b8b97581eefc0c441
Lynx
9a47ab27d50df1faba1dc5777bdcfff576524424bc4a3364d33267bbcf8a3896
Lynx
d5ca3e0e25d768769e4afda209aca1f563768dae79571a38e3070428f8adf031
Lynx
f71fc818362b1465fc1deb361de36badc73ac4dd9e815153c9022f82c4062787
Lynx
Result
Malware family:
n/a
Score:
  9/10
Tags:
credential_access discovery ransomware stealer
Link:
https://tria.ge/reports/250222-g41snazkbv/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in System32 directory
Sets desktop wallpaper using registry
Enumerates connected drives
Credentials from Password Stores: Windows Credential Manager
Renames multiple (352) files with added filename extension
Verdict:
Malicious
Tags:
ransomware
YARA:
Inc MAL_RANSOM_INC_Aug24
Link:
https://app.threat.zone/submission/0fb9b53d-3a8b-4780-827d-743013d29509
Unpacked files
SH256 hash:
b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee
MD5 hash:
57f45c0738af9cd49c61984ea99f83ca
SHA1 hash:
5338cae40e5419a0567b8162c52484f390284f15
Link:
https://www.unpac.me/results/14cabc67-5ea4-48aa-bd5b-6f37cae923a7/
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/b378b7ef0f906358eec595777a50f9bb5cc7bb6635e0f031d65b818a26bdc4ee

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MAL_RANSOM_INC_Aug24
Create hunting rule
Author:X__Junior
Description:Detects INC ransomware and it's variants like Lynx
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants

File information

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

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
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::SetEntriesInAclW
ADVAPI32.dll::SetNamedSecurityInfoW
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindFirstVolumeW
KERNEL32.dll::FindNextVolumeW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDriveTypeW
KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::GetFileAttributesW
KERNEL32.dll::FindFirstFileW
KERNEL32.dll::SetVolumeMountPointW
KERNEL32.dll::GetVolumePathNamesForVolumeNameW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_CRYPT_APIUses Windows Crypt APIADVAPI32.dll::CryptAcquireContextW
ADVAPI32.dll::CryptGenRandom
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetEnumResourceW
MPR.dll::WNetOpenEnumW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegOpenKeyW
ADVAPI32.dll::RegSetValueExW
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::ControlService
ADVAPI32.dll::EnumDependentServicesW
ADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::OpenServiceW
ADVAPI32.dll::QueryServiceStatusEx

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