MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd. 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

Cobalt Strike

Vendor detections: 13

Intelligence 13 IOCs YARA 7 File information Comments

SHA256 hash:	85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd
SHA3-384 hash:	07e6caca8f0fee697cf6c0cde49a1d5d0a79cfc7027674c8d11fcd3b7b22e6a8801d48065dbc1335ec19a17197d6ef44
SHA1 hash:	05a4dcc79a8e223bf751dba3baa4f0c1aa806f07
MD5 hash:	40729a8db3d5f3ea0838e2206ff14337
humanhash:	seven-jig-texas-sweet
File name:	85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd
Download:	download sample
Signature	Cobalt Strike Create hunting rule
File size:	180'880 bytes
First seen:	2024-11-15 08:44:09 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	feccc8a94d18aa961bd860d4a05d671d (1 x Cobalt Strike)
ssdeep	3072:6XpboWftGV0YfUrj/WuyJWskrYEfXgVqdblzTD3+nK5Eu:PWftGV0YfCjPkWskEEhtlzfl5Eu
TLSH	T1AD049E5B73A531F4E5B79635C8A04B06EB72B83217615B5F03A047762F233A19E3EB21
TrID	48.7% (.EXE) Win64 Executable (generic) (10522/11/4) 23.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 9.3% (.EXE) OS/2 Executable (generic) (2029/13) 9.2% (.EXE) Generic Win/DOS Executable (2002/3) 9.2% (.EXE) DOS Executable Generic (2000/1)
Magika	pebin
File icon (PE):
dhash icon	02a8808c8c8a88b8 (1 x Cobalt Strike)
Reporter	JAMESWT_WT
Tags:	Cobalt Strike exe team-microsoft-top

Intelligence

File Origin

# of uploads :

# of downloads :

433

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd

Verdict:

Malicious activity

Analysis date:

2024-11-15 09:19:37 UTC

Tags:

xor-url generic

Link:

https://app.any.run/tasks/077feded-6741-4e5d-9ce5-a4927713b98a

Note:

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

Detection(s):

SecuriteInfo.com.Program.Unwanted.5590.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67370ac44ca0f9db40c4796f

Tags:

cobaltstrike phishing

Result

Verdict:

Clean

Maliciousness:

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

cobaltstrike microsoft_visual_cc obfuscated packed packed packer_detected

Link:

https://www.filescan.io/uploads/67370a11f4d21884864a0dbf/reports/ff0dffea-b968-48c5-acb2-98124dcd2afc/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd

Gathering data

Result

Threat name:

CobaltStrike, Metasploit

Detection:

malicious

Classification:

troj

Score:

88 / 100

Link:

https://www.joesandbox.com/analysis/1556334

Signature

AI detected suspicious sample

C2 URLs / IPs found in malware configuration

Found malware configuration

Malicious sample detected (through community Yara rule)

Multi AV Scanner detection for submitted file

Yara detected CobaltStrike

Yara detected Metasploit Payload

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd/

Threat name:

Win32.Hacktool.MetaSploit

Status:

Malicious

First seen:

2024-11-13 12:39:53 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

21 of 38 (55.26%)

Threat level:

1/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=qxerzirotfhmtm62iu7ujehwlpqckq26cwf44vocy4zavrcotx6q._file

Verdict:

malicious

Label(s):

metasploit

cobaltstrike

Similar samples:

error

Cobalt Strike

Result

Malware family:

n/a

Score:

3/10

Tags:

n/a

Link:

https://tria.ge/reports/241115-knqjja1hnp/

Malware Family:

n/a

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/1091a30f-25f5-4eeb-b14f-60d146f064f5

Unpacked files

SH256 hash:

85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd

MD5 hash:

40729a8db3d5f3ea0838e2206ff14337

SHA1 hash:

05a4dcc79a8e223bf751dba3baa4f0c1aa806f07

Link:

https://www.unpac.me/results/823995dc-ca2b-4dae-a8cb-b19d9c4c81e2/

Malware family:

CobaltStrike

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/85c91ca22e99/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/85c91ca22e994ec9b3da453f4490f65be025435e158bce55c2c7320ac44e9dfd

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:	cobalt_strike_tmp01925d3f Create hunting rule
Author:	The DFIR Report
Description:	files - file ~tmp01925d3f.exe
Reference:	https://thedfirreport.com

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

Rule name:	SUSP_XORed_Mozilla 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

File information

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

https://x.com/malwrhunterteam/status/1857181577760940079

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::TerminateProcess KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineA KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleOutputCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateFileW

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