MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee. 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: 14


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

SHA256 hash: 37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee
SHA3-384 hash: c253354bacc93cadf3805e9fc4c113a31482f9bf4ade539aec474cf277c91022899fc7bfffb510987836041107c3ba8b
SHA1 hash: 26a3488b40c71d8dd7c54ae875fdbc5f95c26872
MD5 hash: bac554751400864068af1e5d04363361
humanhash: football-seventeen-snake-golf
File name:bac554751400864068af1e5d04363361.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:496'641 bytes
First seen:2024-04-23 05:51:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c9619f19f41ef1b7d232f47cfbcc330b (11 x Stealc, 4 x Arechclient2)
ssdeep 6144:LA7RCCRhlS+XEEVxgWF62f3D2TcwU7+ehl57+0sr8/2c6uhaE1cFo:LA7RCCR3D00xN62b24wW+eCo/2QQo
TLSH T1AAB4D00372F0ACA0E6670B335F29B594A2DFFC51EE15572B2E08650F66703E0B6A275D
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 0305112922552100 (2 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 :
308
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee.exe
Verdict:
Malicious activity
Analysis date:
2024-04-23 05:57:07 UTC
Tags:
gcleaner loader stealer stealc
Link:
https://app.any.run/tasks/1f525442-8790-425a-b00c-587c955d3aa8

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
Connection attempt
Sending an HTTP GET request
Delayed reading of the file
Creating a file
Connecting to a non-recommended domain
Creating a window
Running batch commands
Creating a process with a hidden window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Launching a process
Sending an HTTP POST request
Searching for the window
Transferring files using the Background Intelligent Transfer Service (BITS)
Sending a custom TCP request
Connection attempt to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
86%
Tags:
fingerprint overlay packed
Link:
https://www.filescan.io/uploads/66274c823137a4e0f3be331e/reports/2ae5b79e-1e0d-49cb-b3a9-9cbeecbbc1ff/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee
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/7dde41bb-35bd-4093-abb4-858b288030b4
Result
Threat name:
Mars Stealer, PureLog Stealer, Stealc, V
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1430122
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Checks if the current machine is a virtual machine (disk enumeration)
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops password protected ZIP file
Found evasive API chain (may stop execution after checking locale)
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)
Multi AV Scanner detection for domain / URL
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)
Yara detected Generic Downloader
Yara detected Mars stealer
Yara detected PureLog Stealer
Yara detected Stealc
Yara detected Vidar stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1430122 Sample: XAcuSo8KDa.exe Startdate: 23/04/2024 Architecture: WINDOWS Score: 100 45 westus2-2.in.applicationinsights.azure.com 2->45 47 westus2-2.in.ai.privatelink.monitor.azure.com 2->47 49 3 other IPs or domains 2->49 61 Snort IDS alert for network traffic 2->61 63 Multi AV Scanner detection for domain / URL 2->63 65 Found malware configuration 2->65 67 15 other signatures 2->67 8 XAcuSo8KDa.exe 1 10 2->8         started        signatures3 process4 dnsIp5 51 185.172.128.90, 49710, 80 NADYMSS-ASRU Russian Federation 8->51 53 185.172.128.228, 49711, 49716, 80 NADYMSS-ASRU Russian Federation 8->53 55 2 other IPs or domains 8->55 29 C:\Users\user\AppData\Local\Temp\u4b4.3.exe, PE32 8->29 dropped 31 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 8->31 dropped 33 C:\Users\user\AppData\Local\...\relay.dll, PE32 8->33 dropped 35 2 other malicious files 8->35 dropped 69 Detected unpacking (changes PE section rights) 8->69 71 Detected unpacking (overwrites its own PE header) 8->71 13 u4b4.0.exe 56 8->13         started        18 u4b4.3.exe 8 8 8->18         started        20 WerFault.exe 22 16 8->20         started        22 run.exe 6 8->22         started        file6 signatures7 process8 dnsIp9 57 185.172.128.76, 49714, 80 NADYMSS-ASRU Russian Federation 13->57 37 C:\Users\user\AppData\...\softokn3[1].dll, PE32 13->37 dropped 39 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 13->39 dropped 41 C:\Users\user\AppData\...\mozglue[1].dll, PE32 13->41 dropped 43 9 other files (5 malicious) 13->43 dropped 79 Multi AV Scanner detection for dropped file 13->79 81 Detected unpacking (changes PE section rights) 13->81 83 Detected unpacking (overwrites its own PE header) 13->83 87 9 other signatures 13->87 24 WerFault.exe 13->24         started        59 svc.iolo.com 20.157.87.45, 49717, 80 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 18->59 85 Checks if the current machine is a virtual machine (disk enumeration) 18->85 26 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 11 18->26         started        file10 signatures11 process12 signatures13 73 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 26->73 75 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 26->75 77 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 26->77
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee/
Threat name:
Win32.Trojan.Operaloader
Create hunting rule
Status:
Malicious
First seen:
2024-04-23 03:27:39 UTC
File Type:
PE (Exe)
Extracted files:
77
AV detection:
30 of 37 (81.08%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g77nmfwkmlqau2ulnx6j23cscb3wdz3jczqx6w4ytscucdv3z3xa._file
Verdict:
malicious
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:stealc family:zgrat rat stealer
Link:
https://tria.ge/reports/240423-gkrqmsdh6s/
Behaviour
Checks SCSI registry key(s)
Suspicious behavior: EnumeratesProcesses
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
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Detect ZGRat V1
Stealc
ZGRat
Unpacked files
SH256 hash:
cf7fab7f193982a204da7c946d501f8358a8b39ba31094010d4cfa7f519ea54d
MD5 hash:
ba4808e8fbf2c99e14102d9071efce02
SHA1 hash:
62117af936e75cb8477bfee500162d3701647c78
Link:
https://www.unpac.me/results/fb9770ea-125c-4637-b23f-7dc81fd8005d/
SH256 hash:
37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee
MD5 hash:
bac554751400864068af1e5d04363361
SHA1 hash:
26a3488b40c71d8dd7c54ae875fdbc5f95c26872
Link:
https://www.unpac.me/results/fb9770ea-125c-4637-b23f-7dc81fd8005d/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/37fed616ca62/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 37fed616ca62e00a6a8b6dfc9d6c52107761e76916617f5b989c85410ebbceee

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2802625/
  
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::LoadLibraryA
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationA
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
WIN_HTTP_APIUses HTTP servicesWINHTTP.dll::WinHttpConnect

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