MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4
SHA3-384 hash: 118da045d042e763e826525ab470ffb430e90b746ec961eb03962c643ce8414173ef58a0b98f6aa9f4545df6d267538e
SHA1 hash: 70f7db020d256555595d2c430b674c131cb19be6
MD5 hash: 18cad388f277203928a52c49d6577594
humanhash: indigo-virginia-foxtrot-lactose
File name:18cad388f277203928a52c49d6577594.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:424'449 bytes
First seen:2024-04-22 18:10:40 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+A4K3Kc8Y2Yem0IuONlLfiFtDgjTUGU6J5/:GaNPv7Q+72K4eYrlLQDg0xo/
TLSH T1E194F211BAF1CC31E9767D304937D6EC2A2EBD32DFA4864B37945ABF0D312909225366
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 :
333
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4.exe
Verdict:
Malicious activity
Analysis date:
2024-04-23 05:01:05 UTC
Tags:
gcleaner loader stealer stealc telnet hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/3199ffdf-0c5a-4b91-a406-6e4dd5473222

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
Running batch commands
Creating a process with a hidden window
Searching for synchronization primitives
Creating a file
Launching the default Windows debugger (dwwin.exe)
Launching a process
Creating a file in the %AppData% subdirectories
Sending an HTTP POST request
Launching cmd.exe command interpreter
Connection attempt to an infection source
Unauthorized injection to a system process
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Tags:
fingerprint overlay
Link:
https://www.filescan.io/uploads/6626a83975339da04f9be398/reports/e9aece80-08a3-491c-98ff-e6f0c768c92a/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4
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/b0ddc658-6203-41ae-b8c6-823c18e64403
Result
Threat name:
Mars Stealer, PureLog Stealer, RedLine,
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1429874
Signature
.NET source code contains potential unpacker
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 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
Overwrites Mozilla Firefox settings
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: 1429874 Sample: lKUvVGfijL.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->94 108 Snort IDS alert for network traffic 2->108 110 Found malware configuration 2->110 112 Malicious sample detected (through community Yara rule) 2->112 114 14 other signatures 2->114 11 lKUvVGfijL.exe 1 4 2->11         started        16 ptInst.exe 2->16         started        signatures3 process4 dnsIp5 102 185.172.128.90, 49730, 80 NADYMSS-ASRU Russian Federation 11->102 104 185.172.128.228, 49731, 80 NADYMSS-ASRU Russian Federation 11->104 106 2 other IPs or domains 11->106 74 C:\Users\user\AppData\Local\Temp\u5qs.1.exe, PE32 11->74 dropped 76 C:\Users\user\AppData\Local\Temp\u5qs.0.exe, PE32 11->76 dropped 78 C:\Users\user\AppData\Local\...\Qg_Appv5.exe, PE32 11->78 dropped 154 Detected unpacking (changes PE section rights) 11->154 156 Detected unpacking (overwrites its own PE header) 11->156 158 Overwrites Mozilla Firefox settings 11->158 18 Qg_Appv5.exe 10 11->18         started        22 u5qs.0.exe 76 11->22         started        25 u5qs.1.exe 12 8 11->25         started        27 WerFault.exe 21 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 116 Detected unpacking (overwrites its own PE header) 18->116 118 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 18->118 120 Found direct / indirect Syscall (likely to bypass EDR) 18->120 31 ptInst.exe 7 18->31         started        98 185.172.128.76, 49734, 80 NADYMSS-ASRU Russian Federation 22->98 64 C:\ProgramData\nss3.dll, PE32 22->64 dropped 66 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 22->66 dropped 68 C:\Users\user\AppData\...\softokn3[1].dll, PE32 22->68 dropped 72 9 other files (none is malicious) 22->72 dropped 122 Multi AV Scanner detection for dropped file 22->122 124 Detected unpacking (changes PE section rights) 22->124 126 Tries to steal Mail credentials (via file / registry access) 22->126 134 7 other signatures 22->134 34 WerFault.exe 22->34         started        100 svc.iolo.com 20.157.87.45 MICROSOFT-CORP-MSN-AS-BLOCKUS United States 25->100 128 Checks if the current machine is a virtual machine (disk enumeration) 25->128 36 SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe 25->36         started        70 C:\Users\user\AppData\Local\Temp\fnkgr, PE32 29->70 dropped 130 Writes to foreign memory regions 29->130 132 Maps a DLL or memory area into another process 29->132 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 43 ptInst.exe 1 31->43         started        142 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 36->142 144 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 36->144 146 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 36->146 148 Tries to harvest and steal browser information (history, passwords, etc) 39->148 signatures14 process15 signatures16 150 Maps a DLL or memory area into another process 43->150 152 Found direct / indirect Syscall (likely to bypass EDR) 43->152 46 cmd.exe 4 43->46         started        process17 file18 80 C:\Users\user\AppData\Local\Temp\mtvqpj, 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->96 136 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 50->136 138 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 50->138 140 Tries to steal Crypto Currency Wallets 50->140 signatures22
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2024-04-22 19:10:27 UTC
AV detection:
24 of 37 (64.86%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=z6vm2sbi2r5aepdrgykwhjd2em5rysjyi6sql7zoqbjwfsjvuo2a._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc stealer
Link:
https://tria.ge/reports/240422-wskpmaec97/
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/5cb8b247-63de-49cd-b6f5-10dfa0cc2bcc/
SH256 hash:
cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4
MD5 hash:
18cad388f277203928a52c49d6577594
SHA1 hash:
70f7db020d256555595d2c430b674c131cb19be6
Link:
https://www.unpac.me/results/5cb8b247-63de-49cd-b6f5-10dfa0cc2bcc/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/cfaacd4828d4/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:BLOWFISH_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for Blowfish constants
Rule name:Bolonyokte
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:UnknownDotNet RAT - Bolonyokte
Rule name:Borland
Create hunting rule
Author:malware-lu
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Generic_2993e5a5
Create hunting rule
Author:Elastic Security
Rule name:with_urls
Create hunting rule
Author:Antonio Sanchez <asanchez@hispasec.com>
Description:Rule to detect the presence of an or several urls
Reference:http://laboratorio.blogs.hispasec.com/
Rule name:yara_template
Create hunting rule

File information

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

Web download

Stealc

Executable exe cfaacd4828d47a023c71361563a47a233b1c493847a505ff2e805362c935a3b4

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2804603/
  
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