MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2b7efff0b80e8a25e6acba7d686ba3836d3d672d62b880e3661587658edeee40. 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


Stealc


Vendor detections: 12


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2b7efff0b80e8a25e6acba7d686ba3836d3d672d62b880e3661587658edeee40
SHA3-384 hash: 4d10a8192d03250fc756daac5306f47b40202f38a1249af41b7d43a282d1eb3c65564835456141ae38aa7717d4bf2e62
SHA1 hash: bcc30184931b3f5506587ab58d557c3a0c7f6fac
MD5 hash: b428d4ce6257975ba492fc6b02ca817c
humanhash: fifteen-pennsylvania-oklahoma-kansas
File name:b428d4ce6257975ba492fc6b02ca817c.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:472'577 bytes
First seen:2024-04-23 11:11:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 356fb5f92f0ddd4da15f73c163c50759 (5 x Stealc, 1 x Vidar)
ssdeep 6144:DihEsMLyO3fjSQxP5fTIuuYZNPt5iWyG9wGkJZ4QPpUHuTE1cbV:DiysMLbjSutTIuTZjUG9BAbpUnKV
TLSH T1B3A4D00373F2AC70E6664A328D2986A462FFFD715E601727234852CF65F17E192A37D2
TrID 67.1% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.2% (.EXE) Win32 Executable (generic) (4504/4/1)
2.4% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 030f032120133100 (3 x Stealc)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.76/3cd2b41cbde8fc9c.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
340
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending an HTTP GET request to an infection source
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
DNS request
Connecting to a non-recommended domain
Connection attempt
Sending an HTTP GET request
Creating a window
Searching for synchronization primitives
Creating a file
Launching the default Windows debugger (dwwin.exe)
Sending an HTTP POST request
Creating a file in the %AppData% subdirectories
Launching cmd.exe command interpreter
Running batch commands
Creating a process with a hidden window
Launching a process
Searching for the window
Transferring files using the Background Intelligent Transfer Service (BITS)
Sending a custom TCP request
Enabling the 'hidden' option for recently created files
Enabling the 'hidden' option for files in the %temp% directory
Moving a recently created file
Connection attempt to an infection source
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint overlay packed
Link:
https://www.filescan.io/uploads/66279783bf719463848fdfc4/reports/72c03ffd-66ab-48d4-863b-c6a564d61ff5/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/2b7efff0b80e8a25e6acba7d686ba3836d3d672d62b880e3661587658edeee40
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:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/98b83789-bf04-4f15-943e-698f3d949b6b
Result
Threat name:
Mars Stealer, PureLog Stealer, RedLine,
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1430282
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Checks if the current machine is a virtual machine (disk enumeration)
Connects to a pastebin service (likely for C&C)
Connects to many ports of the same IP (likely port scanning)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found direct / indirect Syscall (likely to bypass EDR)
Found evasive API chain (may stop execution after checking locale)
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Snort IDS alert for network traffic
Tries to harvest and steal Bitcoin Wallet information
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Crypto Currency Wallets
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected Generic Downloader
Yara detected Mars stealer
Yara detected PureLog Stealer
Yara detected RedLine Stealer
Yara detected Stealc
Yara detected UAC Bypass using CMSTP
Yara detected Vidar stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1430282 Sample: j36lCJ7IcT.exe Startdate: 23/04/2024 Architecture: WINDOWS Score: 100 86 pastebin.com 2->86 88 download.iolo.net 2->88 90 9 other IPs or domains 2->90 114 Snort IDS alert for network traffic 2->114 116 Found malware configuration 2->116 118 Malicious sample detected (through community Yara rule) 2->118 122 17 other signatures 2->122 11 j36lCJ7IcT.exe 1 4 2->11         started        16 UniversalInstaller.exe 2->16         started        signatures3 120 Connects to a pastebin service (likely for C&C) 86->120 process4 dnsIp5 98 185.172.128.90, 49705, 80 NADYMSS-ASRU Russian Federation 11->98 100 185.172.128.228, 49706, 80 NADYMSS-ASRU Russian Federation 11->100 102 2 other IPs or domains 11->102 78 C:\Users\user\AppData\Local\Temp\uyg.1.exe, PE32 11->78 dropped 80 C:\Users\user\AppData\Local\Temp\uyg.0.exe, PE32 11->80 dropped 82 C:\Users\user\AppData\Local\...\Qg_Appv5.exe, PE32 11->82 dropped 148 Detected unpacking (changes PE section rights) 11->148 150 Detected unpacking (overwrites its own PE header) 11->150 18 uyg.0.exe 77 11->18         started        23 Qg_Appv5.exe 7 11->23         started        25 uyg.1.exe 12 8 11->25         started        27 WerFault.exe 19 16 11->27         started        152 Maps a DLL or memory area into another process 16->152 154 Found direct / indirect Syscall (likely to bypass EDR) 16->154 29 cmd.exe 16->29         started        file6 signatures7 process8 dnsIp9 92 185.172.128.76, 49708, 80 NADYMSS-ASRU Russian Federation 18->92 62 C:\Users\user\AppData\...\softokn3[1].dll, PE32 18->62 dropped 64 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 18->64 dropped 66 C:\Users\user\AppData\...\mozglue[1].dll, PE32 18->66 dropped 76 9 other files (5 malicious) 18->76 dropped 128 Multi AV Scanner detection for dropped file 18->128 130 Detected unpacking (changes PE section rights) 18->130 132 Detected unpacking (overwrites its own PE header) 18->132 142 8 other signatures 18->142 31 WerFault.exe 18->31         started        68 C:\Users\user\AppData\Local\...\relay.dll, PE32 23->68 dropped 70 C:\Users\user\...\UniversalInstaller.exe, PE32 23->70 dropped 72 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 23->72 dropped 134 Found direct / indirect Syscall (likely to bypass EDR) 23->134 33 UniversalInstaller.exe 6 23->33         started        94 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 25->94 136 Checks if the current machine is a virtual machine (disk enumeration) 25->136 37 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 25->37         started        74 C:\Users\user\AppData\Local\Temp\cqmmv, PE32 29->74 dropped 138 Writes to foreign memory regions 29->138 140 Maps a DLL or memory area into another process 29->140 39 MSBuild.exe 29->39         started        41 conhost.exe 29->41         started        file10 signatures11 process12 file13 56 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 33->56 dropped 58 C:\Users\user\...\UniversalInstaller.exe, PE32 33->58 dropped 60 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 33->60 dropped 104 Found direct / indirect Syscall (likely to bypass EDR) 33->104 43 UniversalInstaller.exe 1 33->43         started        106 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 37->106 108 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 37->108 110 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 37->110 112 Tries to harvest and steal browser information (history, passwords, etc) 39->112 signatures14 process15 signatures16 144 Maps a DLL or memory area into another process 43->144 146 Found direct / indirect Syscall (likely to bypass EDR) 43->146 46 cmd.exe 43->46         started        process17 file18 84 C:\Users\user\AppData\Local\...\wjfiukfptyi, PE32 46->84 dropped 156 Writes to foreign memory regions 46->156 158 Found hidden mapped module (file has been removed from disk) 46->158 160 Maps a DLL or memory area into another process 46->160 50 MSBuild.exe 46->50         started        54 conhost.exe 46->54         started        signatures19 process20 dnsIp21 96 91.215.85.66 PINDC-ASRU Russian Federation 50->96 124 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 50->124 126 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 50->126 signatures22
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2b7efff0b80e8a25e6acba7d686ba3836d3d672d62b880e3661587658edeee40/
Threat name:
Win32.Trojan.Convagent
Create hunting rule
Status:
Malicious
First seen:
2024-04-23 11:12:06 UTC
File Type:
PE (Exe)
Extracted files:
61
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fn7p74fyb2fclzvmxj6wq25dqnwt2zznmk4iby3gcwdwldw65zaa._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:sectoprat family:stealc family:zgrat rat stealer trojan
Link:
https://tria.ge/reports/240423-natwksff4v/
Behaviour
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Detect ZGRat V1
SectopRAT
SectopRAT payload
Stealc
ZGRat
Unpacked files
SH256 hash:
024375d3b85d8e205499bb5c1d5eb6c01d40ddb5dbdd36872c2ffef49a00e4b6
MD5 hash:
39f0b2bc2ef3b029217043cb4d0028c4
SHA1 hash:
2eb04d8f4d156c96c280f0f2e498162a7660ea54
Link:
https://www.unpac.me/results/1fcf2eea-1b70-4714-9b5d-da7e92795cbf/
SH256 hash:
2b7efff0b80e8a25e6acba7d686ba3836d3d672d62b880e3661587658edeee40
MD5 hash:
b428d4ce6257975ba492fc6b02ca817c
SHA1 hash:
bcc30184931b3f5506587ab58d557c3a0c7f6fac
Link:
https://www.unpac.me/results/1fcf2eea-1b70-4714-9b5d-da7e92795cbf/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2b7efff0b80e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:EXE_Stealer_StealC_Feb2024
Create hunting rule
Author:Yashraj Solanki - Cyber Threat Intelligence Analyst at Bridewell
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:Windows_Trojan_Generic_2993e5a5
Create hunting rule
Author:Elastic Security

File information

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

Web download

Stealc

Executable exe 2b7efff0b80e8a25e6acba7d686ba3836d3d672d62b880e3661587658edeee40

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2804701/
  
Delivery method
Distributed via web download

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationW
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AddConsoleAliasW
KERNEL32.dll::AddConsoleAliasA
KERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputW
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateHardLinkA
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryW
KERNEL32.dll::RemoveDirectoryW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameA

Comments