MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d. 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

CobaltStrike

Vendor detections: 16

Intelligence 16 IOCs YARA 39 File information Comments

SHA256 hash:	4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d
SHA3-384 hash:	dfdeb32c83a066f0ba3fe01774714e9a47040ba9197bc7b00a7359d545c5628e2e6e6356bbb471d659eb09fce2c0d9fe
SHA1 hash:	3d876abbc7ed579b9e49d71adce00456ee4b113e
MD5 hash:	39bd55b23e017d126072121014daf542
humanhash:	winter-comet-sierra-arizona
File name:	beacon_dec_direct_syscalls.dll
Download:	download sample
Signature	CobaltStrike Create hunting rule
File size:	309'248 bytes
First seen:	2024-05-20 14:16:00 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	833f0c196d62bc445e85b5a7fcf4c982 (1 x CobaltStrike)
ssdeep	6144:owox6HnY48peLqPMposTC7Bw3XnZdlbgietlA:o7AIgLkMpQiXZdl0i8
TLSH	T1F1646C9963A43DF5E8A7C379CA57861BEFF27C554730D70E03640A9A2F237A1622D312
Reporter	0x0d4y
Tags:	Cobalt Strike CobaltStrike exe

Intelligence

File Origin

# of uploads :

# of downloads :

687

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d.exe

Verdict:

Malicious activity

Analysis date:

2024-05-20 14:18:59 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/ed6a0827-383d-4107-a299-bc8d6c8c9df8

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

Win.Tool.CobaltStrike-6336852-0

Win.Trojan.Cobaltstrike-10011492-0

Win.Trojan.CobaltStrike-8091534-0

Verdict:

Malicious

Score:

99.9%

Tags:

Generic Heur Cobaltstrikebeacon

Result

Verdict:

Malware

Maliciousness:

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

cobalt cobaltstrike config-extracted crypto lolbin masquerade meterpreter remote

Link:

https://www.filescan.io/uploads/664b5b26d7fb0506c93e922b/reports/580642cc-5d63-4573-b671-4995bc6a44cc/overview

Verdict:

Malicious

Labled as:

Trojan.Beacon.Shellcode.Marte.Generic

Link:

https://www.hybrid-analysis.com/sample/4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d

Malware family:

Cobalt Strike

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/157f2d3c-f2cc-4baa-9130-810c504ae657

Result

Threat name:

CobaltStrike

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1444325

Signature

Antivirus / Scanner detection for submitted sample

C2 URLs / IPs found in malware configuration

Contains functionality to detect sleep reduction / modifications

Found malware configuration

Machine Learning detection for sample

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected CobaltStrike

Yara detected Powershell download and execute

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d

Detection:

cobaltstrike

Link:

https://mwdb.cert.pl/sample/4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d/

Threat name:

Win64.Trojan.CobaltStrike

Status:

Malicious

First seen:

2024-05-20 14:16:06 UTC

File Type:

PE+ (Dll)

AV detection:

23 of 24 (95.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=jpo23lojq5cwvhh2lztnlsvs3bg2v2kdcac664tx34lotbbt4ugq._file

Verdict:

malicious

Label(s):

cobaltstrike

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/240520-rk5bvaeb6w/

Malware Family:

n/a

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/857838cb-84a6-479b-a9f4-fa0df182687d

Unpacked files

SH256 hash:

4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d

MD5 hash:

39bd55b23e017d126072121014daf542

SHA1 hash:

3d876abbc7ed579b9e49d71adce00456ee4b113e

Detections:

cobaltstrike_xor_config

win_cobalt_strike_auto

HKTL_Win_CobaltStrike

Cobaltbaltstrike_Beacon_x64

INDICATOR_SUSPICIOUS_ReflectiveLoader

cobaltstrike_beacon_x64

ReflectiveLoader

CobaltStrike_Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6

HKTL_Meterpreter_inMemory

CobaltStrike_MZ_Launcher

Malware_QA_vqgk

WiltedTulip_ReflectiveLoader

Leviathan_CobaltStrike_Sample_1

Beacon_K5om

PowerShell_Susp_Parameter_Combo

HKTL_CobaltStrike_SleepMask_Jul22

CobaltStrike_Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6

CobaltStrike_C2_Encoded_XOR_Config_Indicator

MALW_cobaltrike

HKTL_CobaltStrike_Beacon_Strings

hacktool_windows_cobaltstrike_beacon

MALWARE_Win_CobaltStrike

CobaltStrike_Unmodifed_Beacon

CobaltStrike_sleepmask

Link:

https://www.unpac.me/results/68f6d7f0-770d-4774-9718-9d7b17c6dbad/

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/4bddadadc987456a9cfa5e66d5cab2d84daae9431005ef7277df16e98433e50d

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:	Beacon_K5om Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Meterpreter Beacon - file K5om.dll
Reference:	https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html

Rule name:	Beacon_K5om_RID2B14 Create hunting rule
Author:	Florian Roth
Description:	Detects Meterpreter Beacon - file K5om.dll
Reference:	https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html

Rule name:	Cobaltbaltstrike_Beacon_x64 Create hunting rule
Author:	Avast Threat Intel Team
Description:	Detects CobaltStrike payloads
Reference:	https://github.com/avast/ioc

Rule name:	Cobaltstrike1 Create hunting rule
Author:	Ahmet Payaslioglu \| Binalyze DFIR LAB
Description:	Cobalt Strike Detection

Rule name:	Cobaltstrike2 Create hunting rule
Author:	Ahmet Payaslioglu \| Binalyze DFIR LAB
Description:	Cobalt Strike Detection

Rule name:	CobaltStrikeBeacon Create hunting rule
Author:	ditekshen, enzo & Elastic
Description:	Cobalt Strike Beacon Payload

Rule name:	CobaltStrike_C2_Encoded_XOR_Config_Indicator Create hunting rule
Author:	yara@s3c.za.net
Description:	Detects CobaltStrike C2 encoded profile configuration

Rule name:	CobaltStrike_MZ_Launcher Create hunting rule
Author:	yara@s3c.za.net
Description:	Detects CobaltStrike MZ header ReflectiveLoader launcher

Rule name:	CobaltStrike_ReflectiveLoader_RID3297 Create hunting rule
Author:	Florian Roth
Description:	Detects reflective loader (Cobalt Strike)
Reference:	http://www.clearskysec.com/tulip

Rule name:	CobaltStrike_Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6 Create hunting rule
Author:	gssincla@google.com
Description:	Cobalt Strike's sleeve/BeaconLoader.x64.o (Base) Versions 4.3 through at least 4.6
Reference:	https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse

Rule name:	CobaltStrike_Unmodifed_Beacon Create hunting rule
Author:	yara@s3c.za.net
Description:	Detects unmodified CobaltStrike beacon DLL

Rule name:	CobaltStrike__Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6 Create hunting rule
Author:	gssincla@google.com

Rule name:	crime_win32_csbeacon_1 Create hunting rule
Author:	@VK_Intel
Description:	Detects Cobalt Strike loader
Reference:	https://twitter.com/VK_Intel/status/1239632822358474753

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	HKTL_CobaltStrike_Beacon_Strings Create hunting rule
Author:	Elastic
Description:	Identifies strings used in Cobalt Strike Beacon DLL
Reference:	https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures

Rule name:	HKTL_CobaltStrike_SleepMask_Jul22 Create hunting rule
Author:	CodeX
Description:	Detects static bytes in Cobalt Strike 4.5 sleep mask function that are not obfuscated
Reference:	https://codex-7.gitbook.io/codexs-terminal-window/blue-team/detecting-cobalt-strike/sleep-mask-kit-iocs

Rule name:	HKTL_Meterpreter_inMemory Create hunting rule
Author:	netbiosX, Florian Roth
Description:	Detects Meterpreter in-memory
Reference:	https://www.reddit.com/r/purpleteamsec/comments/hjux11/meterpreter_memory_indicators_detection_tooling/

Rule name:	HKTL_Win_CobaltStrike Create hunting rule
Author:	threatintel@volexity.com
Description:	The CobaltStrike malware family.
Reference:	https://www.volexity.com/blog/2021/05/27/suspected-apt29-operation-launches-election-fraud-themed-phishing-campaigns/

Rule name:	INDICATOR_SUSPICIOUS_ReflectiveLoader Create hunting rule
Author:	ditekSHen
Description:	Detects Reflective DLL injection artifacts

Rule name:	Leviathan_CobaltStrike_Sample_1 Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects Cobalt Strike sample from Leviathan report
Reference:	https://goo.gl/MZ7dRg

Rule name:	Leviathan_CobaltStrike_Sample_1_RID3324 Create hunting rule
Author:	Florian Roth
Description:	Detects Cobalt Strike sample from Leviathan report
Reference:	https://goo.gl/MZ7dRg

Rule name:	malware_CobaltStrike_v3v4 Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect CobaltStrike Beacon in memory
Reference:	https://blogs.jpcert.or.jp/en/2018/08/volatility-plugin-for-detecting-cobalt-strike-beacon.html

Rule name:	Malware_QA_vqgk Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	VT Research QA uploaded malware - file vqgk.dll
Reference:	VT Research QA

Rule name:	MALWARE_Win_CobaltStrike Create hunting rule
Author:	ditekSHen
Description:	CobaltStrike payload

Rule name:	MALW_cobaltrike Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Rule to detect CobaltStrike beacon
Reference:	https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike

Rule name:	meth_stackstrings Create hunting rule
Author:	Willi Ballenthin

Rule name:	PowerShell_Susp_Parameter_Combo_RID336F Create hunting rule
Author:	Florian Roth
Description:	Detects PowerShell invocation with suspicious parameters
Reference:	https://goo.gl/uAic1X

Rule name:	ReflectiveLoader Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended
Reference:	Internal Research

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	troj_win_cobaltstrike_memoryinject Create hunting rule
Author:	Jeff White (karttoon@gmail.com) @noottrak
Description:	Detects Cobalt Strike payload typically loaded into memory via PowerShell.

Rule name:	WiltedTulip_ReflectiveLoader Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip
Reference:	http://www.clearskysec.com/tulip

Rule name:	Windows_Trojan_CobaltStrike_1787eef5 Create hunting rule
Author:	Elastic Security
Description:	CS shellcode variants

Rule name:	Windows_Trojan_CobaltStrike_3dc22d14 Create hunting rule
Author:	Elastic Security

Rule name:	Windows_Trojan_CobaltStrike_663fc95d Create hunting rule
Author:	Elastic Security
Description:	Identifies CobaltStrike via unidentified function code

Rule name:	Windows_Trojan_CobaltStrike_ee756db7 Create hunting rule
Description:	Attempts to detect Cobalt Strike based on strings found in BEACON

Rule name:	Windows_Trojan_CobaltStrike_ee756db7 Create hunting rule
Author:	Elastic Security
Description:	Attempts to detect Cobalt Strike based on strings found in BEACON

Rule name:	Windows_Trojan_CobaltStrike_f0b627fc Create hunting rule
Description:	Rule for beacon reflective loader

Rule name:	Windows_Trojan_CobaltStrike_f0b627fc Create hunting rule
Author:	Elastic Security
Description:	Rule for beacon reflective loader

Rule name:	win_cobalt_strike_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.cobalt_strike.

File information

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

Malpedia

https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike

Delivery method

Multiple

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::FreeSid ADVAPI32.dll::OpenThreadToken ADVAPI32.dll::ImpersonateNamedPipeClient ADVAPI32.dll::RevertToSelf
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::CheckTokenMembership ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::ImpersonateLoggedOnUser
WIN32_PROCESS_API	Can Create Process and Threads	ADVAPI32.dll::CreateProcessAsUserA KERNEL32.dll::CreateRemoteThread KERNEL32.dll::CreateProcessA ADVAPI32.dll::CreateProcessWithTokenW ADVAPI32.dll::CreateProcessWithLogonW KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryW KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetStartupInfoA KERNEL32.dll::GetStartupInfoW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleCP
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileA KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileA KERNEL32.dll::CreateFileMappingA KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameA ADVAPI32.dll::GetUserNameA ADVAPI32.dll::LogonUserA ADVAPI32.dll::LookupAccountSidA ADVAPI32.dll::LookupPrivilegeValueA
WIN_CRYPT_API	Uses Windows Crypt API	ADVAPI32.dll::CryptAcquireContextA ADVAPI32.dll::CryptGenRandom
WIN_HTTP_API	Uses HTTP services	WINHTTP.dll::WinHttpAddRequestHeaders WINHTTP.dll::WinHttpConnect WINHTTP.dll::WinHttpOpenRequest WINHTTP.dll::WinHttpOpen WINHTTP.dll::WinHttpQueryAuthSchemes WINHTTP.dll::WinHttpQueryDataAvailable
WIN_SOCK_API	Uses Network to send and receive data	WS2_32.dll::WSAIoctl WS2_32.dll::WSASocketA

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