MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2. 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: 13


Intelligence 13 IOCs YARA 23 File information Comments
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SHA256 hash: e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2
SHA3-384 hash: 9fbda231fecb6b8e0bf461f1b2f407f83fe63dd381f2d706e2c42cd5e2b05cf96aafbf2ab929d30f7b3e206d2d6d37e1
SHA1 hash: 2baa37cdc9b69e4083fdf468240cbacb1f2851ae
MD5 hash: 097a014e9066d6a4dd30e057e18eb511
humanhash: nine-grey-princess-fifteen
File name:file
Download: download sample
Signature Stealc
Create hunting rule
File size:3'137'024 bytes
First seen:2024-05-13 14:12:13 UTC
Last seen:2024-05-13 15:21:56 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 49152:HzcK4Uk57r6mnw8fqFEIawGt2jlobG+FVSA7tffhpZ4F/3:HzvMWmnZSVawGtjHFVS8ffDZ4J
TLSH T162E5D00277D98A1AD2BF0B3AE5B0051447B7F9823621E70F3AD922AD1F537DE8C05766
TrID 44.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
34.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
6.3% (.EXE) Win64 Executable (generic) (10523/12/4)
3.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b0f0f0b0f8baf0f0 (1 x Stealc)
Reporter Bitsight
Tags:exe Stealc


Avatar
Bitsight
url: https://vk.com/doc5294803_669535323?hash=7T8Gazs1UzBQwwkesz3OU40nHxmUT2JiGM4yQlHMVXc&dl=eOr9W744qhVUUUMdaFRmTn2p6iAxWVS24AMQVcBz7eX&api=1&no_preview=1#key

Intelligence

File Origin
# of uploads :
2
# of downloads :
335
Origin country :
US US
Vendor Threat Intelligence
Malware family:
vidar
Create hunting rule
ID:
1
File name:
e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2.exe
Verdict:
Malicious activity
Analysis date:
2024-05-13 14:14:19 UTC
Tags:
vidar
Link:
https://app.any.run/tasks/a7a6119f-4a2d-42ae-8dd8-907a51325e76

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Sanesecurity.Malware.30425.UnRegNetReactor.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %temp% directory
Launching a process
Creating a file
Behavior that indicates a threat
DNS request
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Running batch commands
Creating a process with a hidden window
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
lolbin msbuild net_reactor packed packed
Link:
https://www.filescan.io/uploads/66421ff2a2d36d9500f6ae4c/reports/0eb07421-4bd2-4256-81ad-fd38844967c4/overview
Verdict:
Malicious
Labled as:
MSIL/Kryptik.ALOD trojan
Link:
https://www.hybrid-analysis.com/sample/e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/14985abb-eaab-4115-ad65-6e121594b32d
Result
Threat name:
PrivateLoader, PureLog Stealer, Vidar, z
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1440596
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Opens network shares
Searches for specific processes (likely to inject)
Sigma detected: Silenttrinity Stager Msbuild Activity
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Powershell download and execute
Yara detected PrivateLoader
Yara detected PureLog Stealer
Yara detected Vidar
Yara detected Vidar stealer
Yara detected zgRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1440596 Sample: file.exe Startdate: 13/05/2024 Architecture: WINDOWS Score: 100 34 steamcommunity.com 2->34 36 fp2e7a.wpc.phicdn.net 2->36 38 fp2e7a.wpc.2be4.phicdn.net 2->38 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 13 other signatures 2->50 9 file.exe 2 2->9         started        signatures3 process4 file5 24 C:\Users\user\AppData\...\Protect544cd51a.dll, PE32 9->24 dropped 52 Found many strings related to Crypto-Wallets (likely being stolen) 9->52 54 Writes to foreign memory regions 9->54 56 Allocates memory in foreign processes 9->56 58 Injects a PE file into a foreign processes 9->58 13 MSBuild.exe 1 46 9->13         started        signatures6 process7 dnsIp8 40 65.21.183.11, 443, 49705, 49706 CP-ASDE United States 13->40 42 steamcommunity.com 184.85.65.125, 443, 49704 AKAMAI-ASUS United States 13->42 26 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 13->26 dropped 28 C:\Users\user\AppData\...\softokn3[1].dll, PE32 13->28 dropped 30 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 13->30 dropped 32 10 other files (none is malicious) 13->32 dropped 60 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 13->60 62 Found many strings related to Crypto-Wallets (likely being stolen) 13->62 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 13->64 66 6 other signatures 13->66 18 cmd.exe 1 13->18         started        file9 signatures10 process11 process12 20 conhost.exe 18->20         started        22 timeout.exe 1 18->22         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2/
Threat name:
Win32.Trojan.Generic
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Status:
Malicious
First seen:
2024-05-13 14:13:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
37
AV detection:
18 of 24 (75.00%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=4sdx7xhp7wd45qlgwjtfgksddygv45se3fim5flg2lyuxqml4xra._file
Verdict:
unknown
Result
Malware family:
zgrat
Create hunting rule
Score:
  10/10
Tags:
family:stealc family:vidar family:zgrat rat spyware stealer
Link:
https://tria.ge/reports/240513-rjd39saf93/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
.NET Reactor proctector
Loads dropped DLL
Downloads MZ/PE file
Detect Vidar Stealer
Detect ZGRat V1
Stealc
Vidar
ZGRat
Unpacked files
SH256 hash:
94bc8fb8dd11dbd66bbebae6ffc0f83cffea56290b7c8a7207461467cfb9822c
MD5 hash:
7277acb6f30245a339b0a173a1c1f84b
SHA1 hash:
0f401851bd6534b98b5b39c4aae054c2ec19ed5d
Link:
https://www.unpac.me/results/e37641a0-5fc0-4847-9700-986fdd707c40/
SH256 hash:
8bfa92e3fe9915a625e8391766eb623e5d32b91e1e2d09cd3b4b0677c83158e4
MD5 hash:
74785ec23b8b609c1bf93e2813efe644
SHA1 hash:
3a1b1396c21692c136e77b91f9749f0136f2cbcd
Link:
https://www.unpac.me/results/e37641a0-5fc0-4847-9700-986fdd707c40/
SH256 hash:
e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2
MD5 hash:
097a014e9066d6a4dd30e057e18eb511
SHA1 hash:
2baa37cdc9b69e4083fdf468240cbacb1f2851ae
Detections:
INDICATOR_EXE_Packed_DotNetReactor
Create hunting rule
Link:
https://www.unpac.me/results/e37641a0-5fc0-4847-9700-986fdd707c40/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e4877fdceffd/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/e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2

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_Dlls
Create hunting rule
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:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DotNet_Reactor
Create hunting rule
Author:@bartblaze
Description:Identifies .NET Reactor, which offers .NET code protection such as obfuscation, encryption and so on.
Rule name:has_telegram_urls
Create hunting rule
Author:Aaron DeVera<aaron@backchannel.re>
Description:Detects Telegram URLs
Rule name:INDICATOR_EXE_Packed_DotNetReactor
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with unregistered version of .NET Reactor
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:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion
Rule name:INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
Create hunting rule
Author:ditekSHen
Description:Detects executables containing potential Windows Defender anti-emulation checks
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETDLLMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:PureCrypter
Create hunting rule
Author:@bartblaze
Description:Identifies PureCrypter, .NET loader and obfuscator.
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.purecrypter
Rule name:QbotStuff
Create hunting rule
Author:anonymous
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_c374cd85
Create hunting rule
Author:Elastic Security

File information

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

Web download

Stealc

Executable exe e4877fdceffd87cec166b266532a431e0d5e7644d950ce9566d2f14bc18be5e2

(this sample)

  
Dropped by
Privateloader
  
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

Comments