MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20
SHA3-384 hash: 1cdf70e6464f947f7cf325812d829eedf6016df9111de1b589c203b00d17d0c2d0a0d38fe688e28fc66239d3e7613aa9
SHA1 hash: 10cbbb15ce42e4328441109668ebda4d4b7c15eb
MD5 hash: 5cd97a765e0c9463f57769117db519fa
humanhash: wolfram-utah-single-lactose
File name:5cd97a765e0c9463f57769117db519fa
Download: download sample
Signature Stealc
Create hunting rule
File size:441'857 bytes
First seen:2024-04-26 23:29:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1cd8d44520c2e3583895f01ac332cc01 (1 x Stealc)
ssdeep 12288:pzE/JXGSxAxt9y/SkVDi0XSOoaOAG634KKy:cXGSx89y/SkdOT6IKp
TLSH T1D6949C0372E1BC60E5664B3A9F1EA6EC372DF8608F64AB1732485D1F54752B0D363B92
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 183024c081a04800 (1 x Stealc)
Reporter zbetcheckin
Tags:32 exe Stealc

Intelligence

File Origin
# of uploads :
1
# of downloads :
511
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20.exe
Verdict:
Malicious activity
Analysis date:
2024-04-26 23:30:48 UTC
Tags:
gcleaner loader stealer stealc arechclient2 backdoor
Link:
https://app.any.run/tasks/2bbfc282-f99f-4055-b743-833896d933f1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
DNS request
Connection attempt
Sending an HTTP GET request
Creating a file
Running batch commands
Creating a process with a hidden window
Launching the default Windows debugger (dwwin.exe)
Launching a process
Creating a file in the %AppData% subdirectories
Launching cmd.exe command interpreter
Searching for the window
Creating a window
Searching for synchronization primitives
Connecting to a non-recommended domain
Sending an HTTP POST request
Transferring files using the Background Intelligent Transfer Service (BITS)
Enabling the 'hidden' option for recently created files
Sending a custom TCP request
Connection attempt to an infection source
Sending an HTTP GET request 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/662c38fc75339da04fa18f86/reports/824881a5-5d5e-4795-baf9-22476ef44f45/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20
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/51602f1e-5738-4361-8372-bcc6e71a3ec9
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/1432419
Signature
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 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
Multi AV Scanner detection for submitted 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 SectopRAT
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: 1432419 Sample: VucRf0jboS.exe Startdate: 27/04/2024 Architecture: WINDOWS Score: 100 85 download.iolo.net 2->85 87 westus2-2.in.applicationinsights.azure.com 2->87 89 7 other IPs or domains 2->89 125 Snort IDS alert for network traffic 2->125 127 Found malware configuration 2->127 129 Malicious sample detected (through community Yara rule) 2->129 131 18 other signatures 2->131 9 VucRf0jboS.exe 3 11 2->9         started        14 run.exe 2->14         started        signatures3 process4 dnsIp5 91 185.172.128.90, 49730, 80 NADYMSS-ASRU Russian Federation 9->91 93 185.172.128.228, 49731, 80 NADYMSS-ASRU Russian Federation 9->93 95 2 other IPs or domains 9->95 69 C:\Users\user\AppData\Local\Temp\u5qk.3.exe, PE32 9->69 dropped 71 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->71 dropped 73 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->73 dropped 75 2 other malicious files 9->75 dropped 133 Detected unpacking (overwrites its own PE header) 9->133 16 u5qk.0.exe 58 9->16         started        21 run.exe 6 9->21         started        23 u5qk.3.exe 14 8 9->23         started        25 WerFault.exe 21 16 9->25         started        135 Maps a DLL or memory area into another process 14->135 137 Found direct / indirect Syscall (likely to bypass EDR) 14->137 27 cmd.exe 14->27         started        file6 signatures7 process8 dnsIp9 77 185.172.128.76, 49733, 80 NADYMSS-ASRU Russian Federation 16->77 79 185.172.128.203 NADYMSS-ASRU Russian Federation 16->79 53 C:\Users\user\AppData\...\FBAKEHIEBK.exe, PE32 16->53 dropped 55 C:\Users\user\AppData\Local\...\tiktok[1].exe, PE32 16->55 dropped 57 C:\Users\user\AppData\...\softokn3[1].dll, PE32 16->57 dropped 65 11 other files (7 malicious) 16->65 dropped 97 Detected unpacking (changes PE section rights) 16->97 99 Detected unpacking (overwrites its own PE header) 16->99 101 Tries to steal Mail credentials (via file / registry access) 16->101 111 8 other signatures 16->111 29 cmd.exe 16->29         started        31 WerFault.exe 16->31         started        59 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 21->59 dropped 61 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 21->61 dropped 103 Maps a DLL or memory area into another process 21->103 105 Found direct / indirect Syscall (likely to bypass EDR) 21->105 33 cmd.exe 4 21->33         started        81 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 23->81 107 Checks if the current machine is a virtual machine (disk enumeration) 23->107 37 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 23->37         started        63 C:\Users\user\AppData\Local\Temp\nkho, PE32 27->63 dropped 109 Writes to foreign memory regions 27->109 39 conhost.exe 27->39         started        41 MSBuild.exe 27->41         started        file10 signatures11 process12 file13 43 FBAKEHIEBK.exe 29->43         started        46 conhost.exe 29->46         started        67 C:\Users\user\AppData\Local\Temp\ssfwvk, PE32 33->67 dropped 113 Writes to foreign memory regions 33->113 115 Found hidden mapped module (file has been removed from disk) 33->115 117 Maps a DLL or memory area into another process 33->117 48 MSBuild.exe 33->48         started        51 conhost.exe 33->51         started        119 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 37->119 121 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 37->121 123 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 37->123 signatures14 process15 dnsIp16 139 Multi AV Scanner detection for dropped file 43->139 83 91.215.85.66 PINDC-ASRU Russian Federation 48->83 141 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 48->141 143 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 48->143 145 Tries to harvest and steal browser information (history, passwords, etc) 48->145 signatures17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20/
Threat name:
Win32.Trojan.StealC
Create hunting rule
Status:
Malicious
First seen:
2024-04-26 23:30:08 UTC
File Type:
PE (Exe)
Extracted files:
51
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hm375qfpj4zbsyegz6vnqugdeej3mb3gdegsqprlyl4sugnyz4qa._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:sectoprat family:zgrat rat trojan
Link:
https://tria.ge/reports/240426-3g5nzsec87/
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
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Detect ZGRat V1
SectopRAT
SectopRAT payload
ZGRat
Unpacked files
SH256 hash:
cfc2458a54578854cae748277b7527e4a2ff4a49aa4a55b885109fc334f73865
MD5 hash:
f24e8a42d193b41ec73c76a36c30ee0d
SHA1 hash:
4ceab3b79d49350c6d9575470cd273ec1d8b26cd
Link:
https://www.unpac.me/results/d6e32a95-1e70-4fee-94af-908f2e3dc0ff/
SH256 hash:
3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20
MD5 hash:
5cd97a765e0c9463f57769117db519fa
SHA1 hash:
10cbbb15ce42e4328441109668ebda4d4b7c15eb
Link:
https://www.unpac.me/results/d6e32a95-1e70-4fee-94af-908f2e3dc0ff/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3b37fec0af4f/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/3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20

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: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 3b37fec0af4f32196086cfaad850c32113b60766190d283e2bc2f92a19b8cf20

(this sample)

  
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_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::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetVolumeInformationA
KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleInputA
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasesA
KERNEL32.dll::GetConsoleProcessList
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::RemoveDirectoryA
KERNEL32.dll::GetTempPathA
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
KERNEL32.dll::QueryDosDeviceW

Comments


Avatar
zbet commented on 2024-04-26 23:29:11 UTC

url : hxxp://185.172.128.59/ISetup2.exe