MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99. 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: 16


Intelligence 16 IOCs YARA 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99
SHA3-384 hash: 0b7b3bee33d7cfd23239d570cf4ce078f30af46ebf363e559ff1152b921aa60e49d1e2f5b140268b8c33dbd011c9f37a
SHA1 hash: c01773f9a7886c3ae14abf89769cbe3b8fd3f57b
MD5 hash: 0514259e5fced2ea465031108b96d839
humanhash: berlin-march-glucose-lithium
File name:0514259e5fced2ea465031108b96d839.exe
Download: download sample
Signature Stealc
Create hunting rule
File size:315'904 bytes
First seen:2024-03-20 17:00:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash c7dc01e7bf458b5be41a3a73770771d1 (4 x Stealc, 1 x Socks5Systemz, 1 x Smoke Loader)
ssdeep 3072:YC3CJvX9HUl+v8ExUUcf+ncK4EXxOyZWcOTmens26/cHlqXpLWMLMX6ueJ174Yn5:4JvlY+jUUeIx3kTVnVDq5LWqshu1P
TLSH T1DF646A4379D1EC62E56207314F2D99EC772EFCA68D298B57B3482E4F28701B0D663B61
TrID 37.3% (.EXE) Win64 Executable (generic) (10523/12/4)
17.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
15.9% (.EXE) Win32 Executable (generic) (4504/4/1)
7.3% (.ICL) Windows Icons Library (generic) (2059/9)
7.1% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 0018ac8ac3ab8884 (1 x Stealc)
Reporter abuse_ch
Tags:exe Stealc


Avatar
abuse_ch
Stealc C2:
http://185.172.128.209/3cd2b41cbde8fc9c.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
361
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99.exe
Verdict:
Malicious activity
Analysis date:
2024-03-20 17:03:13 UTC
Tags:
stealer stealc
Link:
https://app.any.run/tasks/34848c30-b858-444e-ba06-1c6ca2aa72bd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Connecting to a non-recommended domain
Connection attempt
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Launching a process
Moving a file to the Program Files subdirectory
Replacing files
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Link:
https://www.filescan.io/uploads/65fb1651fc3fe20efe6a6b13/reports/b8dfc5a9-0aa2-4232-9e24-615fc4be6013/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99
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/65949dd1-0772-4fea-a92b-2e2c3ef13972
Result
Threat name:
Mars Stealer, Stealc, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1412607
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found evasive API chain (may stop execution after checking locale)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Searches for specific processes (likely to inject)
Sigma detected: New RUN Key Pointing to Suspicious Folder
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)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Yara detected Mars stealer
Yara detected Stealc
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1412607 Sample: KY163E6jSb.exe Startdate: 20/03/2024 Architecture: WINDOWS Score: 100 62 Snort IDS alert for network traffic 2->62 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 10 other signatures 2->68 9 KY163E6jSb.exe 71 2->9         started        14 KJKFBAFIDA.exe 1 3 2->14         started        16 KJKFBAFIDA.exe 1 3 2->16         started        process3 dnsIp4 56 185.172.128.209, 49699, 80 NADYMSS-ASRU Russian Federation 9->56 58 185.172.128.65, 49707, 80 NADYMSS-ASRU Russian Federation 9->58 48 C:\Users\user\AppData\...\KJKFBAFIDA.exe, PE32 9->48 dropped 50 C:\Users\user\AppData\...\softokn3[1].dll, PE32 9->50 dropped 52 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 9->52 dropped 54 11 other files (4 malicious) 9->54 dropped 76 Detected unpacking (changes PE section rights) 9->76 78 Detected unpacking (overwrites its own PE header) 9->78 80 Tries to steal Mail credentials (via file / registry access) 9->80 84 7 other signatures 9->84 18 cmd.exe 1 9->18         started        21 WerFault.exe 22 16 9->21         started        82 Creates autostart registry keys with suspicious names 14->82 23 cmd.exe 14->23         started        25 cmd.exe 16->25         started        file5 signatures6 process7 signatures8 70 Uses ping.exe to sleep 18->70 72 Uses ping.exe to check the status of other devices and networks 18->72 27 KJKFBAFIDA.exe 1 4 18->27         started        30 conhost.exe 18->30         started        32 conhost.exe 23->32         started        34 PING.EXE 23->34         started        36 conhost.exe 25->36         started        38 PING.EXE 1 25->38         started        process9 signatures10 86 Multi AV Scanner detection for dropped file 27->86 40 cmd.exe 1 27->40         started        process11 signatures12 74 Uses ping.exe to sleep 40->74 43 PING.EXE 1 40->43         started        46 conhost.exe 40->46         started        process13 dnsIp14 60 2.2.2.2 FranceTelecom-OrangeFR France 43->60
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99/
Threat name:
Win32.Spyware.Stealc
Create hunting rule
Status:
Malicious
First seen:
2024-03-20 17:01:05 UTC
File Type:
PE (Exe)
Extracted files:
32
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=j35kq4pmjvpim3b2zrd32pvmofzrbfpib2otd2eajhx6afv4r2mq._file
Verdict:
malicious
Result
Malware family:
stealc
Create hunting rule
Score:
  10/10
Tags:
family:stealc discovery persistence spyware stealer
Link:
https://tria.ge/reports/240320-vjjkjaec91/
Behaviour
Checks processor information in registry
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
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
Stealc
Unpacked files
SH256 hash:
28a7e49221f1cfb589fe18d1e37aec52371886f3299308c6c77a2eac4faba0de
MD5 hash:
b4a1f5af8cfeeb61b3597e5d0a3d4606
SHA1 hash:
2292b4322bc8c6778c5139b8d5375ec7f2ffe2f9
Detections:
stealc
Create hunting rule
win_stealc_auto
Create hunting rule
Link:
https://www.unpac.me/results/4fdbe645-3e57-4c00-a80b-0caf18e27647/
Parent samples :
45ab730f19b743bca12db47745e8cd2254df1914432acb2b3b0a079c930afee3
3c063f39fdac3f9a509adc49ee3fe0c92341f8f6c47cc6ee8c0d847b3c6b3176
b510b842a6e147929820b8064f3a9c763322dce4fb4f35272f6d03318b1f2459
bec5e37cf9e9ffc78bb82451a60fcde0b7dde3ff43bb9c5a9ae8761692ace613
4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99
584106ced19becb26b6d32204c9cb40cde8d4822f0a7f2fd485b6fe5c5a2904e
082cf2ffe760b415bd97ec41e2a0bac8ef97f454fa462a4a966d9434832477d6
75e985ad843283de707a360843a5ac65e0800b8dde13004c9eec247bc4ee4437
0fd560a3831779b94e294411f7a207ab607e7756af113bf0e91b744044a4eca7
e42ca928595758b2b4356885ea5114ac68cedec292b9fb390c960dcf153e5fa1
921a48baefdf77b7a3d5dc08835820f35900be8ecf201cd4b726761b8fed8478
410c63aa45ff899f0f1859c788ee2cf3b14007affd5da84e836f826a63373672
16f299becfc9cf9a3ec4d493044fa05ed1a4641146724576510b6473c22f18e7
81305657d48c913ffade0412d968f0babdb325b38146c69f4a03b34c11c01559
8f90b1f677f3e5a05b7150dad90bd7d9c4605e04e05397edcddb2e4eac7022b3
9b871c2fa65956cbe083551683e5ccbfb3729c0e61ecc779c9f42f6762e66334
0073a30288e51d3adc55fe86dc134e9ace7ea974211729deb1a43d39d1ae4a46
326a97291a3f81e3b1b9e96576add117922b946e04e119f22cdf08e2863f6d07
f6e1c8b48f6ee95f910acab7f35a697e01eaba10167ac7bac7bd04ea5adae74d
048729cf3d80b15d2f54dd6645f40f50fbc607c628935c993ec08e5396a2849a
SH256 hash:
4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99
MD5 hash:
0514259e5fced2ea465031108b96d839
SHA1 hash:
c01773f9a7886c3ae14abf89769cbe3b8fd3f57b
Link:
https://www.unpac.me/results/4fdbe645-3e57-4c00-a80b-0caf18e27647/
Malware family:
Stealc
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4efaa871ec4d/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/4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99

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:DebuggerCheck__QueryInfo
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:infostealer_win_stealc_standalone
Create hunting rule
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/
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_Smokeloader_3687686f
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:win_stealc_w0
Create hunting rule
Author:crep1x
Description:Find standalone Stealc sample based on decryption routine or characteristic strings
Reference:https://blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/

File information

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

Web download

Stealc

Executable exe 4efaa871ec4d5e866c3acc47bd3eac71731095e80e9d31e88049efe016bc8e99

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2755131/
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2749139/

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
AUTH_APIManipulates User AuthorizationUSER32.dll::SetUserObjectSecurity
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::FindNextVolumeMountPointW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::PeekConsoleInputA
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::ReadConsoleOutputCharacterW
KERNEL32.dll::SetStdHandle
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileA
KERNEL32.dll::GetWindowsDirectoryW
KERNEL32.dll::RemoveDirectoryW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::QueryDosDeviceA

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