MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903
SHA3-384 hash: f33c9333e8809e0ddbad96328576d545cd846a2b8962af1a64b1d320ddd0006c12a98505434005a4e652c106659e46c1
SHA1 hash: a3d428350dab8f49c117171f8168403b0ba1a153
MD5 hash: 6c188983975b6a854239a8afcd595cea
humanhash: happy-hydrogen-pennsylvania-maine
File name:6c188983975b6a854239a8afcd595cea.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:355'840 bytes
First seen:2024-04-29 07:15:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash bf1070ba79872e55c98c6b1c44ebbf3c (16 x Stealc, 1 x Arechclient2, 1 x Rhadamanthys)
ssdeep 6144:hGNRPF5bRarCh+as9IGq4Bnz86C90O0zS9Hfq1VxcpbJSlKXBESyfl:oDYCYaSIf4S6g0O0Cy1qAldSAl
TLSH T13174F1127A60C4F2F5ABD8704534DEA09BFF74721AA4818B37D4076E5E726C0963E3B6
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 64f29a9899a99991 (7 x Stealc, 2 x Arechclient2)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.151/7043a0c6a68d9c65.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
325
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903.exe
Verdict:
Malicious activity
Analysis date:
2024-04-29 07:17:57 UTC
Tags:
loader stealer stealc arechclient2 backdoor
Link:
https://app.any.run/tasks/fcdb84f5-a11e-479d-8c20-6dab89cb6b68

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
Launching the default Windows debugger (dwwin.exe)
Running batch commands
Creating a process with a hidden window
Launching a process
Connection attempt to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
fingerprint packed
Link:
https://www.filescan.io/uploads/662f4933b575a100a2340fb2/reports/c2fd9abc-e79b-4211-86ae-a35cb7754d36/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903
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/f76e15e7-b872-4d71-b816-ed107d02f7c0
Result
Threat name:
Mars Stealer, RedLine, SectopRAT, Stealc
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433132
Signature
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
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
Uses known network protocols on non-standard ports
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: 1433132 Sample: Khf0oNzz23.exe Startdate: 29/04/2024 Architecture: WINDOWS Score: 100 75 note.padd.cn.com 2->75 77 bg.microsoft.map.fastly.net 2->77 107 Multi AV Scanner detection for domain / URL 2->107 109 Found malware configuration 2->109 111 Malicious sample detected (through community Yara rule) 2->111 113 14 other signatures 2->113 9 Khf0oNzz23.exe 2 10 2->9         started        14 run.exe 2 2->14         started        signatures3 process4 dnsIp5 79 185.172.128.203, 49719, 80 NADYMSS-ASRU Russian Federation 9->79 81 185.172.128.228, 49718, 80 NADYMSS-ASRU Russian Federation 9->81 83 note.padd.cn.com 176.97.76.106, 49721, 80 INTRAFFIC-ASUA United Kingdom 9->83 63 C:\Users\user\AppData\Local\Temp\...\run.exe, PE32 9->63 dropped 65 C:\Users\user\AppData\Local\...\relay.dll, PE32 9->65 dropped 67 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 9->67 dropped 69 C:\Users\user\AppData\Local\Temp\u3i4.0.exe, PE32 9->69 dropped 115 Detected unpacking (changes PE section rights) 9->115 117 Detected unpacking (overwrites its own PE header) 9->117 16 u3i4.0.exe 57 9->16         started        21 run.exe 6 9->21         started        23 WerFault.exe 22 16 9->23         started        119 Maps a DLL or memory area into another process 14->119 121 Found direct / indirect Syscall (likely to bypass EDR) 14->121 25 cmd.exe 2 14->25         started        file6 signatures7 process8 dnsIp9 73 185.172.128.151, 49732, 80 NADYMSS-ASRU Russian Federation 16->73 49 C:\Users\user\AppData\...\softokn3[1].dll, PE32 16->49 dropped 51 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 16->51 dropped 53 C:\Users\user\AppData\...\mozglue[1].dll, PE32 16->53 dropped 61 9 other files (5 malicious) 16->61 dropped 93 Multi AV Scanner detection for dropped file 16->93 95 Detected unpacking (changes PE section rights) 16->95 97 Detected unpacking (overwrites its own PE header) 16->97 105 8 other signatures 16->105 27 cmd.exe 16->27         started        29 WerFault.exe 16->29         started        55 C:\Users\user\AppData\Roaming\...\relay.dll, PE32 21->55 dropped 57 C:\Users\user\AppData\...\UIxMarketPlugin.dll, PE32 21->57 dropped 99 Maps a DLL or memory area into another process 21->99 101 Found direct / indirect Syscall (likely to bypass EDR) 21->101 31 cmd.exe 4 21->31         started        59 C:\Users\user\AppData\Local\Temp\wxklom, PE32 25->59 dropped 103 Writes to foreign memory regions 25->103 35 conhost.exe 25->35         started        37 MSBuild.exe 25->37         started        file10 signatures11 process12 file13 39 conhost.exe 27->39         started        41 timeout.exe 27->41         started        71 C:\Users\user\AppData\Local\Temp\xuiom, PE32 31->71 dropped 87 Writes to foreign memory regions 31->87 89 Found hidden mapped module (file has been removed from disk) 31->89 91 Maps a DLL or memory area into another process 31->91 43 MSBuild.exe 8 31->43         started        47 conhost.exe 31->47         started        signatures14 process15 dnsIp16 85 91.215.85.66, 15647, 49731, 49733 PINDC-ASRU Russian Federation 43->85 123 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 43->123 125 Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines) 43->125 127 Tries to harvest and steal browser information (history, passwords, etc) 43->127 signatures17
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903/
Threat name:
Win32.Spyware.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-04-29 07:16:06 UTC
File Type:
PE (Exe)
Extracted files:
16
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=e7h5xk5tkmacca7vo2v4pgof2ac7pzjygwxyphfzc52nmzbdzebq._file
Verdict:
malicious
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/240429-h3slbsdc48/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
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
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://185.172.128.151
Unpacked files
SH256 hash:
cfc2458a54578854cae748277b7527e4a2ff4a49aa4a55b885109fc334f73865
MD5 hash:
f24e8a42d193b41ec73c76a36c30ee0d
SHA1 hash:
4ceab3b79d49350c6d9575470cd273ec1d8b26cd
Link:
https://www.unpac.me/results/ba7466fa-de92-457f-aef6-b16da79e0f9a/
SH256 hash:
27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903
MD5 hash:
6c188983975b6a854239a8afcd595cea
SHA1 hash:
a3d428350dab8f49c117171f8168403b0ba1a153
Link:
https://www.unpac.me/results/ba7466fa-de92-457f-aef6-b16da79e0f9a/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/27cfdbabb353/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/27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903

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:DebuggerException__SetConsoleCtrl
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 27cfdbabb353002103f576abc799c5d005f7e53835af879cb91774d66423c903

(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::SetConsoleTitleW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA

Comments