MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7. 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 56 File information Comments

SHA256 hash:	4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7
SHA3-384 hash:	589fa15ecf8b5c7a67121d6ebef01455d2b04c5d81a510632a7a4a19c6ad8cc69b1791d5728b66b5190d9998531ce22f
SHA1 hash:	33f3301b7c351637527e2fca7189989c5a7f3803
MD5 hash:	061c6604a402b997dd6aced94ceaff5e
humanhash:	fifteen-friend-hot-nevada
File name:	mode11_buqd.exe
Download:	download sample
Signature	CobaltStrike Create hunting rule
File size:	3'906'560 bytes
First seen:	2025-01-03 12:03:57 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	d42595b695fc008ef2c56aabd8efd68e (95 x Vidar, 92 x Rhadamanthys, 44 x LummaStealer)
ssdeep	49152:+UgD5mHuE0r0VOjjC4mkZMyITWt1U4yP21Qsq8VT/0+2Cw2:tpGm
Threatray	414 similar samples on MalwareBazaar
TLSH	T13D06DF0BBCE159B5C0AE92328A7661567A71BC040F3267D73A90B37C2F77BD09A36744
TrID	44.4% (.EXE) Win64 Executable (generic) (10522/11/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	Joker
Tags:	CobaltStrike exe malware trojan

Intelligence

File Origin

# of uploads :

# of downloads :

484

Origin country :

Vendor Threat Intelligence

Malware family:

cobaltstrike

ID:

File name:

mode11_buqd.exe

Verdict:

Malicious activity

Analysis date:

2025-01-03 12:16:27 UTC

Tags:

golang cobaltstrike xor-url generic

Link:

https://app.any.run/tasks/a14fd277-0c81-4535-be88-27f1d03045d8

Note:

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

Detection(s):

SecuriteInfo.com.Win64.Evo-gen.30310.29219.UNOFFICIAL

Verdict:

Malicious

Score:

93.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6777d23e74a2bd296e254eba

Tags:

cobaltstrike emotet cobalt

Result

Verdict:

Malware

Maliciousness:

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

golang

Link:

https://www.filescan.io/uploads/6777d23bd8e3c9589c5d169d/reports/9bdce396-33ee-4295-8d54-383ac74e25f3/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_90%

Link:

https://www.hybrid-analysis.com/sample/4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7

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.

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/4ec3d627-f885-4612-807f-ba8fd65f8e35

Result

Threat name:

CobaltStrike

Detection:

malicious

Classification:

troj

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1583718

Signature

AI detected suspicious sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Found malware configuration

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Performs DNS queries to domains with low reputation

Yara detected CobaltStrike

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7/

Threat name:

Win64.Trojan.CobaltStrike

Status:

Malicious

First seen:

2025-01-03 12:04:09 UTC

File Type:

PE+ (Exe)

AV detection:

10 of 23 (43.48%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=jizudmngqgbg6cf4t3eqziselgbgxmupscidbossfvnofsjem7lq._file

Verdict:

malicious

Label(s):

cobaltstrike

CobaltStrike

3625fddc2687c086d6d4a4300b03d4a2492acf8e843697f57830bb40956f495a

CobaltStrike

4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7

CobaltStrike

899c529454c4286185a9d3c039277ce28957590e7ed3e586ccf1487317159c22

CobaltStrike

d49c2451497109ae9f2646d06aa6dcf51b0f6af825d07f516b8dd59c03602401

CobaltStrike

e1b6bd9876ca534e99b28403661e09b7a1ab7dac706df3962a0c975ba5b9e8ec

CobaltStrike

ef1967d9e33cbed9f12a504bdc642c9c12cfbac79a4421617f32e1aa2dc82c6f

CobaltStrike

error

CobaltStrike

+ 404 additional samples on MalwareBazaar

Result

Malware family:

n/a

Score:

3/10

Tags:

discovery

Link:

https://tria.ge/reports/250103-n8k2bsvrdl/

Behaviour

System Location Discovery: System Language Discovery

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/cb9161fe-e27f-45fb-9226-41344310ae62

Unpacked files

SH256 hash:

4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7

MD5 hash:

061c6604a402b997dd6aced94ceaff5e

SHA1 hash:

33f3301b7c351637527e2fca7189989c5a7f3803

Link:

https://www.unpac.me/results/a0cebf0e-d541-436d-8505-074f7392e136/

Malware family:

CobaltStrike

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/4a3341b1a681/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

CobaltStrike

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7

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

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_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__Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6 Create hunting rule
Author:	gssincla@google.com

Rule name:	cobalt_strike_beacon_decrypted Create hunting rule
Author:	0x0d4y
Description:	This rule detects cobalt strike decrypted beacons.

Rule name:	cobalt_strike_beacon_detected Create hunting rule
Author:	0x0d4y
Description:	This rule detects cobalt strike beacons.

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:	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:	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:	DetectGoMethodSignatures Create hunting rule
Author:	Wyatt Tauber
Description:	Detects Go method signatures in unpacked Go binaries

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:	HiveRansomware Create hunting rule
Author:	Dhanunjaya
Description:	Yara Rule To Detect Hive V4 Ransomware

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:	identity_golang Create hunting rule
Author:	Eric Yocam
Description:	find Golang malware

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

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:	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:	RansomPyShield_Antiransomware Create hunting rule
Author:	XiAnzheng
Description:	Check for Suspicious String and Import combination that Ransomware mostly abuse(can create FP)

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

Rule name:	SUSP_XORed_Mozilla_Oct19 Create hunting rule
Author:	Florian Roth
Description:	Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:	https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()

Rule name:	SUSP_XORed_Mozilla_RID2DB4 Create hunting rule
Author:	Florian Roth
Description:	Detects suspicious XORed keyword - Mozilla/5.0
Reference:	Internal Research

Rule name:	SUSP_XORed_URL_In_EXE Create hunting rule
Author:	Florian Roth (Nextron Systems)
Description:	Detects an XORed URL in an executable
Reference:	https://twitter.com/stvemillertime/status/1237035794973560834

Rule name:	SUSP_XORed_URL_in_EXE_RID2E46 Create hunting rule
Author:	Florian Roth
Description:	Detects an XORed URL in an executable
Reference:	https://twitter.com/stvemillertime/status/1237035794973560834

Rule name:	Sus_Obf_Enc_Spoof_Hide_PE Create hunting rule
Author:	XiAnzheng
Description:	Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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

Rule name:	Trojan_Raw_Generic_4 Create hunting rule
Author:	FireEye
Reference:	https://www.fireeye.com/blog/products-and-services/2020/12/fireeye-shares-details-of-recent-cyber-attack-actions-to-protect-community.html

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_f0b627fc Create hunting rule
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.

Web download

CobaltStrike

exe 4a3341b1a681826f08bc9ec90ca24459826bb28f909030ba522d5ae2c92467d7

(this sample)

URLhaus

https://urlhaus.abuse.ch/url/3387285/

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

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

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	kernel32.dll::CloseHandle kernel32.dll::CreateThread
WIN_BASE_API	Uses Win Base API	kernel32.dll::LoadLibraryW kernel32.dll::LoadLibraryExW kernel32.dll::GetSystemInfo
WIN_BASE_EXEC_API	Can Execute other programs	kernel32.dll::WriteConsoleW kernel32.dll::SetConsoleCtrlHandler kernel32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	kernel32.dll::GetSystemDirectoryA

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