MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499
SHA3-384 hash: 66243e76334c541303c05fbf9ce95cc50294353029c35ea00347e30ae10ab21fc8260684d014c7b30fdf231b971268c2
SHA1 hash: 8c90b5a6caab28b852cde352011752cb2761fdf9
MD5 hash: df1ecb1fc2d0480ef5a0e569543d14e9
humanhash: montana-comet-hydrogen-five
File name:df1ecb1fc2d0480ef5a0e569543d14e9.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:424'449 bytes
First seen:2024-04-22 18:35:50 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:GaNowv7MR+dM+A4K3Kc8Y2Yem0IuONlLfiFtDgjTUGU6J54:GaNPv7Q+72K4eYrlLQDg0xo4
TLSH T1C294F211BAF1CC31E9767D304937D6EC2A2EBD32DFA4864B37945ABF0D312909225366
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 64d29a9889a98981 (9 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 :
429
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499.exe
Verdict:
Malicious activity
Analysis date:
2024-04-23 04:58:34 UTC
Tags:
gcleaner loader stealer stealc telnet hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/67b24a17-c622-4db5-8515-9d356c7b1e53

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

Behaviour
Searching for the window
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
Running batch commands
Creating a process with a hidden window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Launching a process
Creating a file
Sending an HTTP POST request
Creating a file in the %AppData% subdirectories
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
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:
No Threat
Threat level:
  10/10
Confidence:
100%
Tags:
fingerprint overlay
Link:
https://www.filescan.io/uploads/6626ae1547bfd8641eb29202/reports/8504df59-6052-4395-9cad-aeeac96b814c/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499
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/bb4dbaa7-3b7c-43e5-8726-53ed05aac885
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/1429893
Signature
.NET source code contains potential unpacker
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: 1429893 Sample: bRa3UYfQxA.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 7 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 16 other signatures 2->124 11 bRa3UYfQxA.exe 1 4 2->11         started        16 ptInst.exe 2->16         started        signatures3 process4 dnsIp5 102 185.172.128.90, 49704, 80 NADYMSS-ASRU Russian Federation 11->102 104 185.172.128.228, 49705, 80 NADYMSS-ASRU Russian Federation 11->104 106 2 other IPs or domains 11->106 82 C:\Users\user\AppData\Local\Temp\u4w4.1.exe, PE32 11->82 dropped 84 C:\Users\user\AppData\Local\Temp\u4w4.0.exe, PE32 11->84 dropped 86 C:\Users\user\AppData\Local\...\Qg_Appv5.exe, PE32 11->86 dropped 152 Detected unpacking (changes PE section rights) 11->152 154 Detected unpacking (overwrites its own PE header) 11->154 18 u4w4.0.exe 77 11->18         started        23 Qg_Appv5.exe 10 11->23         started        25 u4w4.1.exe 20 8 11->25         started        27 WerFault.exe 16 11->27         started        156 Maps a DLL or memory area into another process 16->156 158 Found direct / indirect Syscall (likely to bypass EDR) 16->158 29 cmd.exe 16->29         started        file6 signatures7 process8 dnsIp9 96 185.172.128.76, 49708, 80 NADYMSS-ASRU Russian Federation 18->96 64 C:\Users\user\AppData\...\softokn3[1].dll, PE32 18->64 dropped 66 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 18->66 dropped 68 C:\Users\user\AppData\...\mozglue[1].dll, PE32 18->68 dropped 80 9 other files (5 malicious) 18->80 dropped 130 Multi AV Scanner detection for dropped file 18->130 132 Detected unpacking (changes PE section rights) 18->132 134 Detected unpacking (overwrites its own PE header) 18->134 146 8 other signatures 18->146 31 WerFault.exe 18->31         started        70 C:\Users\user\AppData\...\vcruntime140.dll, PE32 23->70 dropped 72 C:\Users\user\AppData\Local\...\ptInst.exe, PE32 23->72 dropped 74 C:\Users\user\AppData\Local\...\msvcp140.dll, PE32 23->74 dropped 76 C:\Users\user\AppData\Local\...\WCLDll.dll, PE32 23->76 dropped 136 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 23->136 138 Found direct / indirect Syscall (likely to bypass EDR) 23->138 33 ptInst.exe 7 23->33         started        98 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 25->98 140 Checks if the current machine is a virtual machine (disk enumeration) 25->140 37 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 25->37         started        78 C:\Users\user\AppData\Local\Temp\flsqku, PE32 29->78 dropped 142 Writes to foreign memory regions 29->142 144 Maps a DLL or memory area into another process 29->144 39 MSBuild.exe 29->39         started        41 conhost.exe 29->41         started        file10 signatures11 process12 file13 56 C:\Users\user\AppData\...\vcruntime140.dll, PE32 33->56 dropped 58 C:\Users\user\AppData\Roaming\...\ptInst.exe, PE32 33->58 dropped 60 C:\Users\user\AppData\...\msvcp140.dll, PE32 33->60 dropped 62 C:\Users\user\AppData\Roaming\...\WCLDll.dll, PE32 33->62 dropped 108 Found direct / indirect Syscall (likely to bypass EDR) 33->108 43 ptInst.exe 1 33->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 148 Maps a DLL or memory area into another process 43->148 150 Found direct / indirect Syscall (likely to bypass EDR) 43->150 46 cmd.exe 4 43->46         started        process17 file18 88 C:\Users\user\AppData\Local\Temp\coobews, PE32 46->88 dropped 160 Writes to foreign memory regions 46->160 162 Found hidden mapped module (file has been removed from disk) 46->162 164 Maps a DLL or memory area into another process 46->164 50 MSBuild.exe 46->50         started        54 conhost.exe 46->54         started        signatures19 process20 dnsIp21 100 91.215.85.66 PINDC-ASRU Russian Federation 50->100 126 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 50->126 128 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 50->128 signatures22
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2024-04-22 19:03:54 UTC
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cnvp7bjvctfhvotgftbgxrkm7ojnldteo52szy5issh7t4irosmq._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc stealer
Link:
https://tria.ge/reports/240422-w8wrtsef9v/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Downloads MZ/PE file
Stealc
Unpacked files
SH256 hash:
a1ff96ad65a9ead5053b1de9ed94a03ff792cb4f39d84e3123f62ab22fb71e29
MD5 hash:
37862a13464da087a12b6b45fe34f9fe
SHA1 hash:
9214969d475793f2647cbea48760f29998c907d5
Link:
https://www.unpac.me/results/f0c86f6d-156a-4031-8608-606de26389b5/
SH256 hash:
136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499
MD5 hash:
df1ecb1fc2d0480ef5a0e569543d14e9
SHA1 hash:
8c90b5a6caab28b852cde352011752cb2761fdf9
Link:
https://www.unpac.me/results/f0c86f6d-156a-4031-8608-606de26389b5/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/136aff853514/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 136aff853514ca7aba662cc26bc54cfb92d58e6477752ce3a8948ff9f1117499

(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

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