MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff. 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: 13


Intelligence 13 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff
SHA3-384 hash: 38127d6bde2eb0a82fa75f7bf126bb03552a680a05944cb2f3a5838f468477940b96c6ad7c24fc9c1a123b78ae2a3c43
SHA1 hash: 367afa12dca0f336191d4dd87aa5a91dcf2aefd1
MD5 hash: 776a3ead745f6259083b136aab61454e
humanhash: ohio-berlin-spaghetti-july
File name:776a3ead745f6259083b136aab61454e.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:424'961 bytes
First seen:2024-04-22 20:50:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d10268a82f0ec0b09c4d5e18431c41e9 (21 x Stealc, 2 x LummaStealer, 1 x Arechclient2)
ssdeep 6144:UaNvkplK7BMzgYWQPHHHA2J38865LAEG6MLZoeHJ74:UaNvkpRnZJsR8b6G4
TLSH T17594F100F1E2DC31DA6D497CDC2BD6A42BAEB9715F75868B7798376F1E31290812232D
TrID 46.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
25.2% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 64f29a9889a9a981 (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 :
303
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff.exe
Verdict:
Malicious activity
Analysis date:
2024-04-23 04:46:03 UTC
Tags:
gcleaner loader stealer stealc telnet hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/c63b55ea-24c7-497f-aa58-d056eafb19a9

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
Connecting to a non-recommended domain
Creating a window
Searching for synchronization primitives
Creating a file
Launching the default Windows debugger (dwwin.exe)
Sending an HTTP POST request
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Launching a process
Launching cmd.exe command interpreter
Transferring files using the Background Intelligent Transfer Service (BITS)
Sending a custom TCP request
Enabling the 'hidden' option for recently created files
Connection attempt to an infection source
Unauthorized injection to a system process
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff
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/4183b392-c8f8-4242-a0a7-1958d12e369a
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/1429945
Signature
Antivirus detection for dropped file
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
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
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: 1429945 Sample: xPudQBV1wJ.exe Startdate: 22/04/2024 Architecture: WINDOWS Score: 100 90 download.iolo.net 2->90 92 westus2-2.in.applicationinsights.azure.com 2->92 94 8 other IPs or domains 2->94 118 Snort IDS alert for network traffic 2->118 120 Found malware configuration 2->120 122 Malicious sample detected (through community Yara rule) 2->122 124 15 other signatures 2->124 11 xPudQBV1wJ.exe 1 4 2->11         started        16 ptInst.exe 2->16         started        signatures3 process4 dnsIp5 102 185.172.128.90, 49710, 80 NADYMSS-ASRU Russian Federation 11->102 104 185.172.128.228, 49711, 80 NADYMSS-ASRU Russian Federation 11->104 106 2 other IPs or domains 11->106 74 C:\Users\user\AppData\Local\Temp\uec.1.exe, PE32 11->74 dropped 76 C:\Users\user\AppData\Local\Temp\uec.0.exe, PE32 11->76 dropped 78 C:\Users\user\AppData\Local\...\Qg_Appv5.exe, PE32 11->78 dropped 156 Detected unpacking (changes PE section rights) 11->156 158 Detected unpacking (overwrites its own PE header) 11->158 18 Qg_Appv5.exe 10 11->18         started        22 uec.0.exe 69 11->22         started        25 uec.1.exe 10 8 11->25         started        27 WerFault.exe 22 16 11->27         started        160 Maps a DLL or memory area into another process 16->160 162 Found direct / indirect Syscall (likely to bypass EDR) 16->162 29 cmd.exe 16->29         started        file6 signatures7 process8 dnsIp9 56 C:\Users\user\AppData\...\vcruntime140.dll, PE32 18->56 dropped 58 C:\Users\user\AppData\Local\...\ptInst.exe, PE32 18->58 dropped 60 C:\Users\user\AppData\Local\...\msvcp140.dll, PE32 18->60 dropped 62 C:\Users\user\AppData\Local\...\WCLDll.dll, PE32 18->62 dropped 126 Detected unpacking (overwrites its own PE header) 18->126 128 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 18->128 130 Found direct / indirect Syscall (likely to bypass EDR) 18->130 31 ptInst.exe 7 18->31         started        98 185.172.128.76, 49715, 80 NADYMSS-ASRU Russian Federation 22->98 64 C:\Users\user\AppData\...\softokn3[1].dll, PE32 22->64 dropped 66 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 22->66 dropped 68 C:\Users\user\AppData\...\mozglue[1].dll, PE32 22->68 dropped 72 9 other files (5 malicious) 22->72 dropped 132 Detected unpacking (changes PE section rights) 22->132 134 Tries to steal Mail credentials (via file / registry access) 22->134 136 Found many strings related to Crypto-Wallets (likely being stolen) 22->136 144 6 other signatures 22->144 35 WerFault.exe 22->35         started        100 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 25->100 138 Checks if the current machine is a virtual machine (disk enumeration) 25->138 37 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 25->37         started        70 C:\Users\user\AppData\Local\Temp\imvevd, PE32 29->70 dropped 140 Writes to foreign memory regions 29->140 142 Maps a DLL or memory area into another process 29->142 39 MSBuild.exe 29->39         started        41 conhost.exe 29->41         started        file10 signatures11 process12 file13 82 C:\Users\user\AppData\...\vcruntime140.dll, PE32 31->82 dropped 84 C:\Users\user\AppData\Roaming\...\ptInst.exe, PE32 31->84 dropped 86 C:\Users\user\AppData\...\msvcp140.dll, PE32 31->86 dropped 88 C:\Users\user\AppData\Roaming\...\WCLDll.dll, PE32 31->88 dropped 108 Found direct / indirect Syscall (likely to bypass EDR) 31->108 43 ptInst.exe 1 31->43         started        110 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 37->110 112 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 37->112 114 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 37->114 116 Tries to harvest and steal browser information (history, passwords, etc) 39->116 signatures14 process15 signatures16 152 Maps a DLL or memory area into another process 43->152 154 Found direct / indirect Syscall (likely to bypass EDR) 43->154 46 cmd.exe 43->46         started        process17 file18 80 C:\Users\user\AppData\Local\...\hggqrbcqcsn, PE32 46->80 dropped 164 Writes to foreign memory regions 46->164 166 Found hidden mapped module (file has been removed from disk) 46->166 168 Maps a DLL or memory area into another process 46->168 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->96 146 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 50->146 148 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 50->148 150 Tries to steal Crypto Currency Wallets 50->150 signatures22
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2024-04-22 21:01:54 UTC
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qntg2la3pbuqzy3kqiks6o7y43kwuizsy3xyrx7qn7544tcdg77q._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:sectoprat family:stealc rat stealer trojan
Link:
https://tria.ge/reports/240422-zm5pdsgb66/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
SectopRAT
SectopRAT payload
Stealc
Unpacked files
SH256 hash:
a1ff96ad65a9ead5053b1de9ed94a03ff792cb4f39d84e3123f62ab22fb71e29
MD5 hash:
37862a13464da087a12b6b45fe34f9fe
SHA1 hash:
9214969d475793f2647cbea48760f29998c907d5
Link:
https://www.unpac.me/results/3fdfb2d6-d9b8-4131-a35f-9a46b7e5e60f/
SH256 hash:
83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff
MD5 hash:
776a3ead745f6259083b136aab61454e
SHA1 hash:
367afa12dca0f336191d4dd87aa5a91dcf2aefd1
Link:
https://www.unpac.me/results/3fdfb2d6-d9b8-4131-a35f-9a46b7e5e60f/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/83666d2c1b78/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

File information

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

Web download

Stealc

Executable exe 83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff

(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::FindNextVolumeW
KERNEL32.dll::SetFirmwareEnvironmentVariableA
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetVolumeInformationW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetConsoleDisplayMode
KERNEL32.dll::SetConsoleTitleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleAliasExesLengthA
KERNEL32.dll::GetConsoleAliasesLengthA
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW

Comments