MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a
SHA3-384 hash: c5e54ec8045718f641f9a9f5330d072c4be95bbbe4a27c35770a528bcef8d012cbd330d1e63e92d08f87fd71320f2c5c
SHA1 hash: 897335d05e4d3ed0cc8ae4591b2094f01b6cb369
MD5 hash: 22ea99c3408e7c0f32fecf3391427a58
humanhash: nevada-north-minnesota-minnesota
File name:22ea99c3408e7c0f32fecf3391427a58.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:355'840 bytes
First seen:2024-04-27 22:10:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2f726f40370b375fa05d60fc38904442 (12 x Stealc, 1 x Arechclient2)
ssdeep 6144:ToBqFgnH6oK/xcYNKD8r+syjBJw45rtMLYC43J9fa7nxNHnKT:EawahCYgD8CsKJw4/MchjCnM
Threatray 51 similar samples on MalwareBazaar
TLSH T1F574F1317B60D836D2FA8938D835C6A15A3F783176B5819B335026AE0E713C19A7E35F
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 64f29a9899a99991 (7 x Stealc, 2 x Arechclient2)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.76/8681490a59ad0e34.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
304
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a.exe
Verdict:
Malicious activity
Analysis date:
2024-04-27 22:11:23 UTC
Tags:
loader stealer stealc hijackloader arechclient2 backdoor
Link:
https://app.any.run/tasks/b2cf86b9-e7de-46d8-ab46-0483e76f941b

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
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
Running batch commands
Creating a process with a hidden window
Launching a process
Launching the default Windows debugger (dwwin.exe)
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint packed
Link:
https://www.filescan.io/uploads/662d77f647bfd8641eb8121b/reports/d1867890-43b1-43e4-95c3-f33e09c89468/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a
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/a7d952ff-c870-47a7-b85c-0f77447a3e5b
Result
Threat name:
Mars Stealer, RedLine, SectopRAT, Stealc
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1432692
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Overwrites Mozilla Firefox settings
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
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)
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 Mars stealer
Yara detected RedLine Stealer
Yara detected SectopRAT
Yara detected Stealc
Yara detected UAC Bypass using CMSTP
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1432692 Sample: qjilAyOusw.exe Startdate: 28/04/2024 Architecture: WINDOWS Score: 100 84 note.padd.cn.com 2->84 86 fp2e7a.wpc.phicdn.net 2->86 88 fp2e7a.wpc.2be4.phicdn.net 2->88 114 Multi AV Scanner detection for domain / URL 2->114 116 Found malware configuration 2->116 118 Malicious sample detected (through community Yara rule) 2->118 120 15 other signatures 2->120 9 qjilAyOusw.exe 2 10 2->9         started        14 run.exe 2->14         started        16 chrome.exe 9 2->16         started        18 chrome.exe 2->18         started        signatures3 process4 dnsIp5 104 185.172.128.203, 49707, 80 NADYMSS-ASRU Russian Federation 9->104 106 185.172.128.228, 49706, 80 NADYMSS-ASRU Russian Federation 9->106 108 note.padd.cn.com 176.97.76.106, 49723, 80 INTRAFFIC-ASUA United Kingdom 9->108 74 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->74 dropped 76 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->76 dropped 78 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 9->78 dropped 80 C:\Users\user\AppData\Local\Temp\u5ck.0.exe, PE32 9->80 dropped 150 Detected unpacking (changes PE section rights) 9->150 152 Detected unpacking (overwrites its own PE header) 9->152 20 u5ck.0.exe 10 77 9->20         started        25 run.exe 6 9->25         started        27 WerFault.exe 22 16 9->27         started        154 Maps a DLL or memory area into another process 14->154 156 Found direct / indirect Syscall (likely to bypass EDR) 14->156 29 cmd.exe 14->29         started        110 192.168.2.9, 138, 15647, 443 unknown unknown 16->110 112 239.255.255.250 unknown Reserved 16->112 31 chrome.exe 16->31         started        33 chrome.exe 16->33         started        35 chrome.exe 16->35         started        37 chrome.exe 18->37         started        file6 signatures7 process8 dnsIp9 90 185.172.128.76, 49727, 80 NADYMSS-ASRU Russian Federation 20->90 58 C:\Users\user\AppData\...\softokn3[1].dll, PE32 20->58 dropped 60 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 20->60 dropped 62 C:\Users\user\AppData\...\mozglue[1].dll, PE32 20->62 dropped 70 9 other files (5 malicious) 20->70 dropped 130 Detected unpacking (changes PE section rights) 20->130 132 Detected unpacking (overwrites its own PE header) 20->132 134 Tries to steal Mail credentials (via file / registry access) 20->134 142 8 other signatures 20->142 39 WerFault.exe 20->39         started        64 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 25->64 dropped 66 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 25->66 dropped 136 Maps a DLL or memory area into another process 25->136 138 Found direct / indirect Syscall (likely to bypass EDR) 25->138 41 cmd.exe 4 25->41         started        68 C:\Users\user\AppData\Local\...\xprsnqlycvvq, PE32 29->68 dropped 140 Writes to foreign memory regions 29->140 45 conhost.exe 29->45         started        47 MSBuild.exe 29->47         started        92 plus.l.google.com 172.253.115.101, 443, 49722 GOOGLEUS United States 31->92 102 2 other IPs or domains 31->102 94 www3.l.google.com 142.251.16.139, 443, 49736 GOOGLEUS United States 33->94 96 ogs.google.com 33->96 98 142.251.163.106, 443, 49750 GOOGLEUS United States 35->98 100 142.251.163.99, 443, 49753, 49754 GOOGLEUS United States 37->100 file10 signatures11 process12 file13 72 C:\Users\user\AppData\Local\Temp\rfoahpqb, PE32 41->72 dropped 144 Writes to foreign memory regions 41->144 146 Found hidden mapped module (file has been removed from disk) 41->146 148 Maps a DLL or memory area into another process 41->148 49 MSBuild.exe 41->49         started        54 conhost.exe 41->54         started        signatures14 process15 dnsIp16 82 91.215.85.66, 15647, 49746, 9000 PINDC-ASRU Russian Federation 49->82 56 C:\Users\user\AppData\...\Secure Preferences, JSON 49->56 dropped 122 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 49->122 124 Found many strings related to Crypto-Wallets (likely being stolen) 49->124 126 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 49->126 128 2 other signatures 49->128 file17 signatures18
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a/
Threat name:
Win32.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2024-04-27 22:11:04 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
17 of 23 (73.91%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jmc4zqcvtabbozec552iviugjv3fb3tnultfmpbbddau4dfyynfa._file
Verdict:
malicious
Similar samples:
069bebac87e5c2bf6e4c4bfb52a8731e1a98867a3bf1214e56da9ee7f86a62ec
Stealc
44076f98f8eb94de54ede47ed6d40d685eeab38606232b022f29996a2ab33cef
Stealc
47307dc63a88e7e1ba5eb0230a0ac39092bd5c284896909d5e9f274f47939483
Stealc
480b540cb344d74306d03347658b2018a4b8504f4055ad15ba43456953d7b33c
Stealc
5cb642e33d49c06da371af485c11bf2220fa4bb6a47eac607fa9dfad36c90d60
Stealc
83666d2c1b78690ce36a82152f3bf8e6d56a2332c6ef88dff06ffbce4c4337ff
Stealc
9856ec1807bbf852a9dfe8f37adcda483d8ced5c447fc6565bfcba6658f7bc5c
Stealc
a464f8ca48e3193c3c58bec992d90875712d87a0165c24568e0b09c700364154
Stealc
ac075dc158427a98750ca956666c2a7d8d25fe67cbf3512dafbab2c1d64c8018
Stealc
cd595a8167120233e2cc867316e1f6153dda4a7316de8df439c613cbaed9790a
Stealc
+ 41 additional samples on MalwareBazaar
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:sectoprat family:stealc discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/240427-13w8mahf37/
Behaviour
Checks processor information in registry
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
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Downloads MZ/PE file
SectopRAT
SectopRAT payload
Stealc
Malware Config
C2 Extraction:
http://185.172.128.76
Unpacked files
SH256 hash:
cfc2458a54578854cae748277b7527e4a2ff4a49aa4a55b885109fc334f73865
MD5 hash:
f24e8a42d193b41ec73c76a36c30ee0d
SHA1 hash:
4ceab3b79d49350c6d9575470cd273ec1d8b26cd
Link:
https://www.unpac.me/results/695214e9-bcc3-45fa-b14b-7446f61aa29f/
SH256 hash:
4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a
MD5 hash:
22ea99c3408e7c0f32fecf3391427a58
SHA1 hash:
897335d05e4d3ed0cc8ae4591b2094f01b6cb369
Link:
https://www.unpac.me/results/695214e9-bcc3-45fa-b14b-7446f61aa29f/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4b05ccc05598/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/4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_Mars_Stealer
Create hunting rule
Author:@malgamy12
Description:detect_Mars_Stealer
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_Crypto_Wallet_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_Embedded_MFA_Browser_Extension_IDs
Create hunting rule
Author:ditekSHen
Description:Detect binaries embedding considerable number of MFA browser extension IDs.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_Stealc_str
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:Stealc infostealer
Rule name:Windows_Trojan_Generic_2993e5a5
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_Stealc_b8ab9ab5
Create hunting rule
Author:Elastic Security
Rule name:win_stealc_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stealc.
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 4b05ccc0559802176482ef748aa2864d7650ee6da2e6563c2118c14e0cb8c34a

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2812849/
  
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_NXMissing Non-Executable Memory Protectioncritical
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::SetFirmwareEnvironmentVariableA
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetVolumeInformationA
KERNEL32.dll::GetStartupInfoA
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::ScrollConsoleScreenBufferA
KERNEL32.dll::SetConsoleCtrlHandler
KERNEL32.dll::SetConsoleDisplayMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA

Comments