MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec. 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

NexusStealer

Vendor detections: 13

Intelligence 13 IOCs YARA 6 File information Comments

SHA256 hash:	fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec
SHA3-384 hash:	3bb7b03863294ea6a4a81e48873149ecb8815a743d9ff3bbc27d0865fc9cc5cee72d0e4fc6e2f84fd57e473a4d3c7efc
SHA1 hash:	9d468fc9c3035ed20661bb9fa6dfe3602065459f
MD5 hash:	51d76280701cf761e9edc77eb017ed33
humanhash:	enemy-double-november-nine
File name:	fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec
Download:	download sample
Signature	NexusStealer Create hunting rule
File size:	13'740'370 bytes
First seen:	2024-06-10 07:59:54 UTC
Last seen:	2024-06-10 08:22:31 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	f4f2e2b03fe5666a721620fcea3aea9b (15 x BlankGrabber, 10 x PythonStealer, 6 x CrealStealer)
ssdeep	393216:PEkmD6u1+TtIiFTY9Z8D8Ccl6lWCDnlbVkLXKA:P06u1QtIea8DZcIlWCDlMKA
TLSH	T1CFD6335676D209E8E9F6217682928B12BBB7E8534721D3CF1BF815245F073F28836F16
TrID	48.7% (.EXE) Win64 Executable (generic) (10523/12/4) 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)
File icon (PE):
dhash icon	f8dc3733968eae37 (1 x NexusStealer)
Reporter	Anonymous
Tags:	exe nexus NexusStealer

Intelligence

File Origin

# of uploads :

# of downloads :

426

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec.exe

Verdict:

Malicious activity

Analysis date:

2024-06-10 08:01:55 UTC

Tags:

discord python evasion

Link:

https://app.any.run/tasks/e4ad5a77-58e6-4939-b5d1-92108bde0a52

Note:

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

Detection(s):

SecuriteInfo.com.Generic.PySpy.B.765F62AA.12898.18713.UNOFFICIAL

Verdict:

Malicious

Score:

93.3%

Link:

https://cyber-fortress.com/docs/result/index.php?id=666706405c0e232c1ff025ffwin7simulatehigh_evasion

Tags:

Agent

Result

Verdict:

Malware

Maliciousness:

Behaviour

Searching for the window

Creating a file in the %temp% subdirectories

Restart of the analyzed sample

Delayed reading of the file

Using the Windows Management Instrumentation requests

DNS request

Connection attempt

Sending a custom TCP request

Creating a file

Enabling autorun by creating a file

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

expand lolbin microsoft_visual_cc overlay packed packed pyinstaller pyinstaller

Link:

https://www.filescan.io/uploads/6666b285eae3878d8f38d862/reports/98f2c926-8558-4816-b5e9-ef3491e9e937/overview

Verdict:

Malicious

Labled as:

PySpy.B.Generic

Link:

https://www.hybrid-analysis.com/sample/fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec

Result

Verdict:

MALICIOUS

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/7f3d9e0e-fde7-453f-b6f0-85c24e1302ff

Result

Threat name:

Python Stealer, NexusStealer

Detection:

malicious

Classification:

troj

Score:

68 / 100

Link:

https://www.joesandbox.com/analysis/1454429

Signature

AI detected suspicious sample

Found pyInstaller with non standard icon

Multi AV Scanner detection for submitted file

Yara detected Generic Python Stealer

Yara detected NexusStealer

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec/

Threat name:

Win64.Trojan.Casdet

Status:

Malicious

First seen:

2024-06-07 02:07:55 UTC

File Type:

PE+ (Exe)

Extracted files:

1139

AV detection:

25 of 38 (65.79%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=734uzbf4s6sh7b4uk7567sxcjx3c5pyroe2y6iwygrckl2l65xwa._file

Result

Malware family:

n/a

Score:

7/10

Tags:

pyinstaller

Link:

https://tria.ge/reports/240610-jwz79seb7v/

Behaviour

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Drops startup file

Loads dropped DLL

Unpacked files

SH256 hash:

fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec

MD5 hash:

51d76280701cf761e9edc77eb017ed33

SHA1 hash:

9d468fc9c3035ed20661bb9fa6dfe3602065459f

Detections:

PyInstaller

Link:

https://www.unpac.me/results/469474d9-553a-4e6c-8924-785b16fe32fb/

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/fef94c84bc97a47f879457fbefcae24df62ebf1171358f22d83444a5e97eedec

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:	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:	dsc Create hunting rule
Author:	Aaron DeVera
Description:	Discord domains

Rule name:	PyInstaller Create hunting rule
Author:	@bartblaze
Description:	Identifies executable converted using PyInstaller.

Rule name:	PyInstaller_Packed_April_2024 Create hunting rule
Author:	NDA0N
Description:	Detects files packed with PyInstaller

Rule name:	upxHook Create hunting rule
Author:	@r3dbU7z
Description:	Detect artifacts from 'upxHook' - modification of UPX packer
Reference:	https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

No further information available

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 (FORCE_INTEGRITY)	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::ConvertSidToStringSidW ADVAPI32.dll::ConvertStringSecurityDescriptorToSecurityDescriptorW
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::GetTokenInformation
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateProcessW ADVAPI32.dll::OpenProcessToken KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::LoadLibraryExW KERNEL32.dll::GetDriveTypeW KERNEL32.dll::GetStartupInfoW KERNEL32.dll::GetCommandLineW KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetConsoleCtrlHandler KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleMode KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::RemoveDirectoryW KERNEL32.dll::SetDllDirectoryW
WIN_USER_API	Performs GUI Actions	USER32.dll::CreateWindowExW

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