MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f. 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


SkuldStealer


Vendor detections: 13


Intelligence 13 IOCs YARA 43 File information Comments
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SHA256 hash: b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f
SHA3-384 hash: e97f2f3a33375f165d69c43c37a09a8b76fae5fbe8f8ecb04792fafd54a11df608e843d21d78b81eddbda290de8c32bf
SHA1 hash: a5b653a77586165cff8feaa189585a1d23a09574
MD5 hash: 0f2b19b93c031b97baea56508dc72467
humanhash: sink-butter-double-washington
File name:Spoofer.exe
Download: download sample
Signature SkuldStealer
Create hunting rule
File size:10'570'240 bytes
First seen:2025-12-23 15:30:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d42595b695fc008ef2c56aabd8efd68e (120 x Vidar, 92 x Rhadamanthys, 51 x Stealc)
ssdeep 98304:cUGV+PjU3NfstZMaAyjEm9+T6ZvY/a8liD3VcvBqEW:cg8ujT9++pmomvB3
TLSH T170B62847ECA546E5C0AD9175C6269152BE717C885F3063D32FA0FA242F77BE0AEB9700
TrID 41.1% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
26.1% (.EXE) Win64 Executable (generic) (10522/11/4)
12.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.1% (.ICL) Windows Icons Library (generic) (2059/9)
5.0% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter burger
Tags:exe SkuldStealer

Intelligence

File Origin
# of uploads :
1
# of downloads :
88
Origin country :
NL NL
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
Spoofer.exe
Verdict:
Malicious activity
Analysis date:
2025-12-23 15:29:54 UTC
Tags:
auto-reg stealer skuld anti-evasion ims-api generic antivm golang
Link:
https://app.any.run/tasks/8ea1fb49-696d-41f1-a5d6-3d2958539a41

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/45868/
Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=694ab574038f10550b550cc8
Tags:
infosteal vmdetect
Verdict:
Malicious
Labled as:
WinGo_PSW_Agent_GO_trojan
Link:
https://www.hybrid-analysis.com/sample/b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-12-21T18:35:00Z UTC
Last seen:
2025-12-24T00:23:00Z UTC
Hits:
~100
Detections:
PDM:Trojan.Win32.Generic Trojan-PSW.Win64.Stealer.apvu Trojan-PSW.Win32.Coins.sb Trojan.Win64.Agent.sb Trojan-PSW.Win64.Agent.sb Backdoor.Win32.Zegost.sb Trojan-PSW.Win64.Stealer.sb Trojan-PSW.Win32.Stealer.sb Trojan-PSW.Win32.Greedy.sb Trojan.Win32.Agent.sb PDM:Trojan.Win32.Tasker.cust
Link:
https://opentip.kaspersky.com/b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/ff9bbe6d-75eb-4027-ac39-bb8c81a02046
Result
Threat name:
Go Stealer, Telegram Stealer, ThunderKit
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
99 / 100
Link:
https://www.joesandbox.com/analysis/1838285
Signature
Excessive usage of taskkill to terminate processes
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Found Tor onion address
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Uses the Telegram API (likely for C&C communication)
Yara detected Go Stealer
Yara detected Telegram RAT
Yara detected Telegram Stealer
Yara detected ThunderKitty Grabber
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1838285 Sample: Spoofer.exe Startdate: 23/12/2025 Architecture: WINDOWS Score: 99 51 api.telegram.org 2->51 55 Suricata IDS alerts for network traffic 2->55 57 Found malware configuration 2->57 59 Multi AV Scanner detection for submitted file 2->59 63 6 other signatures 2->63 8 Spoofer.exe 10 2->8         started        13 DisplayDriverUpdater.exe 2->13         started        signatures3 61 Uses the Telegram API (likely for C&C communication) 51->61 process4 dnsIp5 53 api.telegram.org 149.154.167.220, 443, 49719, 49725 TELEGRAMRU United Kingdom 8->53 49 C:\Users\user\...\DisplayDriverUpdater.exe, PE32+ 8->49 dropped 65 Found many strings related to Crypto-Wallets (likely being stolen) 8->65 67 Found Tor onion address 8->67 69 Uses schtasks.exe or at.exe to add and modify task schedules 8->69 15 taskkill.exe 1 8->15         started        17 taskkill.exe 1 8->17         started        19 taskkill.exe 1 8->19         started        27 16 other processes 8->27 71 Multi AV Scanner detection for dropped file 13->71 73 Tries to harvest and steal browser information (history, passwords, etc) 13->73 75 Excessive usage of taskkill to terminate processes 13->75 21 tasklist.exe 13->21         started        23 tasklist.exe 13->23         started        25 taskkill.exe 13->25         started        29 16 other processes 13->29 file6 signatures7 process8 process9 31 conhost.exe 15->31         started        33 conhost.exe 17->33         started        35 conhost.exe 19->35         started        37 conhost.exe 21->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        45 15 other processes 27->45 47 16 other processes 29->47
Score:
86%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/0f2b19b93c031b97baea56508dc72467
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f/
Verdict:
Malicious
Threat:
Trojan-PSW.Win32.Stealer
Link:
https://tip.neiki.dev/file/b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f
Threat name:
Win64.Infostealer.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-12-22 01:26:24 UTC
File Type:
PE+ (Exe)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ws3n4b5bm63gyytanuybqdv2533n6m4s2lbiyike3tfoecufsfpq._file
Verdict:
malicious
Label(s):
skuldstealer
Create hunting rule
Similar samples:
error
SkuldStealer
Result
Malware family:
n/a
Score:
  7/10
Tags:
defense_evasion discovery spyware stealer
Link:
https://tria.ge/reports/251223-trqhdawmgy/
Behaviour
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Browser Information Discovery
Drops file in Windows directory
Drops file in System32 directory
Enumerates processes with tasklist
Reads user/profile data of web browsers
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/891db9ae-2b1e-4925-844c-1d654dcca7a1
Unpacked files
SH256 hash:
b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f
MD5 hash:
0f2b19b93c031b97baea56508dc72467
SHA1 hash:
a5b653a77586165cff8feaa189585a1d23a09574
Link:
https://www.unpac.me/results/8a28cce2-91b4-4bc7-ac58-8afbb4f18e80/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4b6de07a167/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/b4b6de07a167b66c62606d30180ebaeef6df3392d2c28c2144dccae20a85915f

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:aix
Create hunting rule
Author:Tim Brown @timb_machine
Description:AIX binary
Rule name:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__ConsoleCtrl
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:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:DetectGoMethodSignatures
Create hunting rule
Author:Wyatt Tauber
Description:Detects Go method signatures in unpacked Go binaries
Rule name:Detect_Go_GOMAXPROCS
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata
Rule name:enterpriseapps2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise apps
Rule name:enterpriseunix2
Create hunting rule
Author:Tim Brown @timb_machine
Description:Enterprise UNIX
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:Golangmalware
Create hunting rule
Author:Dhanunjaya
Description:Malware in Golang
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:golang_duffcopy_amd64
Create hunting rule
Rule name:Golang_Find_CSC846
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:Golang_Find_CSC846_Simple
Create hunting rule
Author:Ashar Siddiqui
Description:Find Go Signatuers
Rule name:grakate_stealer_nov_2021
Create hunting rule
Rule name:has_telegram_urls
Create hunting rule
Author:Aaron DeVera<aaron@backchannel.re>
Description:Detects Telegram URLs
Rule name:HiveRansomware
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule To Detect Hive V4 Ransomware
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
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_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_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:ldpreload
Create hunting rule
Author:xorseed
Reference:https://stuff.rop.io/
Rule name:Macos_Infostealer_Wallets_8e469ea0
Create hunting rule
Author:Elastic Security
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:Multi_Generic_Threat_19854dc2
Create hunting rule
Author:Elastic Security
Rule name:ProgramLanguage_Golang
Create hunting rule
Author:albertzsigovits
Description:Application written in Golang programming language
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:Suspicious_Golang_Binary
Create hunting rule
Author:Tim Machac
Description:Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)
Rule name:TelegramAPIMalware_PowerShell_EXE
Create hunting rule
Author:@polygonben
Description:Hunting for pwsh malware using Telegram for C2
Rule name:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:unixredflags3
Create hunting rule
Author:Tim Brown @timb_machine
Description:Hunts for UNIX red flags
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/45868/

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