MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b15f9b08ccfe910f6047bed99091148aec4a22964967121a0c30cb6bf2ad777e. 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

ArkeiStealer

Vendor detections: 11

Intelligence 11 IOCs YARA 5 File information Comments 1

SHA256 hash:	b15f9b08ccfe910f6047bed99091148aec4a22964967121a0c30cb6bf2ad777e
SHA3-384 hash:	832ff872cd2851c208bc5466f4931fe3bbc2eeb27ecb8abb94120caa8747e7f37fb66bd176311026342efc588b0bbc26
SHA1 hash:	d1b7b088c71fba7810c890b85fa021d5410a14bb
MD5 hash:	42aeff2ad205f4c434e216fa71307af7
humanhash:	speaker-three-don-skylark
File name:	42aeff2ad205f4c434e216fa71307af7.exe
Download:	download sample
Signature	ArkeiStealer Create hunting rule
File size:	531'968 bytes
First seen:	2021-04-29 18:05:33 UTC
Last seen:	2021-04-29 19:04:44 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	2989f428aa578b7654d541c15275e6cc (2 x ArkeiStealer)
ssdeep	12288:tRKhgvzu7hIXaZ4jcv/sBY1WbqZMlyHFVvF:Khgvz3aZ4cz23lylVvF
Threatray	733 similar samples on MalwareBazaar
TLSH	7EB4012431C4C072C197767A8879CBB15FBF3869461A2A9F6FD616FDAF28391D62430C
Reporter	abuse_ch
Tags:	ArkeiStealer exe

Intelligence

File Origin

# of uploads :

# of downloads :

118

Origin country :

n/a

Vendor Threat Intelligence

Detection:

Predatorthethief

Link:

https://www.capesandbox.com/analysis/146797/

Result

Verdict:

Malware

Maliciousness:

Behaviour

DNS request

Sending a custom TCP request

Creating a file

Connection attempt

Sending an HTTP GET request

Deleting a recently created file

Replacing files

Reading critical registry keys

Delayed writing of the file

Sending a UDP request

Running batch commands

Creating a process with a hidden window

Using the Windows Management Instrumentation requests

Searching for the window

Launching a process

Stealing user critical data

Launching a tool to kill processes

Forced shutdown of a browser

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.

Result

Threat name:

Vidar

Detection:

malicious

Classification:

phis.troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/702888

Signature

Detected unpacking (changes PE section rights)

Detected unpacking (overwrites its own PE header)

Found malware configuration

Found many strings related to Crypto-Wallets (likely being stolen)

Machine Learning detection for sample

Multi AV Scanner detection for submitted file

Tries to harvest and steal Bitcoin Wallet information

Tries to harvest and steal browser information (history, passwords, etc)

Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)

Tries to steal Crypto Currency Wallets

Tries to steal Instant Messenger accounts or passwords

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b15f9b08ccfe910f6047bed99091148aec4a22964967121a0c30cb6bf2ad777e/

Threat name:

Win32.Trojan.Chapak

Status:

Malicious

First seen:

2021-04-29 18:06:16 UTC

AV detection:

14 of 29 (48.28%)

Threat level:

5/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=wfpzwcgm72iq6ychx3mzbeiurlweuiuwjftregqmgdfwx4vno57a._file

Verdict:

malicious

ArkeiStealer

0ae02edbc714dfd70bc71151c585d12d35b407c831ea5c9abf5c32376ce14a45

ArkeiStealer

387db5d0fff6033a701405b93c2c600aecf09e2610a31a1495b61f0c54fa822b

ArkeiStealer

5fed1d8ef3eabf45f7463e0b9b536a06b0b09e3999efc916904c7f120f97c754

ArkeiStealer

84343112791c187d10af9cea8fac68cf4fc03d72352f1fe2def0bf72f9a9afc7

ArkeiStealer

96448cf668bf7268d6ffbe37fc7d6ade1c89a1af67153a9a2c90d081fa897a22

ArkeiStealer

d2d27adf86c11aade4e8c6a63223f21709382df7266e6889775db56b625cf8fa

ArkeiStealer

d5a207da0ff7f562e93477fe49d54cfcac75d4637125755c26db77a7d50ec40c

ArkeiStealer

d8e57f4c33ba5fc9f984da08a6be1febac3ce5e81b25e7ee3fa26edda758ca41

ArkeiStealer

f0d7fc1a1d1800ff702c591a3e9b8c30cb81220d57de13c33875299275f65de1

ArkeiStealer

+ 723 additional samples on MalwareBazaar

Result

Malware family:

vidar

Score:

10/10

Tags:

family:vidar discovery spyware stealer

Link:

https://tria.ge/reports/210429-r5k34bqhte/

Behaviour

Checks processor information in registry

Delays execution with timeout.exe

Kills process with taskkill

Modifies system certificate store

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Accesses 2FA software files, possible credential harvesting

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Deletes itself

Loads dropped DLL

Reads local data of messenger clients

Reads user/profile data of web browsers

Downloads MZ/PE file

Vidar

Unpacked files

SH256 hash:

436275cc2f151d14a95004b9974f1e3aa965f860aa76a33bb5e477932049e813

MD5 hash:

ac9ef3cfa081d57337b0dc73fd3954b1

SHA1 hash:

7b8fcac3b54ac3d40ad94c254086cd0f04493ced

Detections:

win_vidar_auto

Link:

https://www.unpac.me/results/4e71c3de-1a2f-4a45-97be-5f6564a585d8/

Parent samples :
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SH256 hash:

b15f9b08ccfe910f6047bed99091148aec4a22964967121a0c30cb6bf2ad777e

MD5 hash:

42aeff2ad205f4c434e216fa71307af7

SHA1 hash:

d1b7b088c71fba7810c890b85fa021d5410a14bb

Link:

https://www.unpac.me/results/4e71c3de-1a2f-4a45-97be-5f6564a585d8/

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/b15f9b08ccfe910f6047bed99091148aec4a22964967121a0c30cb6bf2ad777e

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:	INDICATOR_SUSPICIOUS_EXE_References_CryptoWallets Create hunting rule
Author:	ditekSHen
Description:	Detects executables referencing many cryptocurrency mining wallets or apps. Observed in information stealers

Rule name:	MALWARE_Win_Vidar Create hunting rule
Author:	ditekSHen
Description:	Detects Vidar / ArkeiStealer

Rule name:	Ping_Del_method_bin_mem Create hunting rule
Author:	James_inthe_box
Description:	cmd ping IP nul del

Rule name:	win_vidar_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	autogenerated rule brought to you by yara-signator

Rule name:	with_sqlite Create hunting rule
Author:	Julian J. Gonzalez <info@seguridadparatodos.es>
Description:	Rule to detect the presence of SQLite data in raw image
Reference:	http://www.st2labs.com

File information

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

Web download

ArkeiStealer

exe b15f9b08ccfe910f6047bed99091148aec4a22964967121a0c30cb6bf2ad777e

(this sample)

Cape

https://www.capesandbox.com/analysis/146797/

URLhaus

https://urlhaus.abuse.ch/url/1147399/

Delivery method

Distributed via web download

Comments

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a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-29 19:12:47 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0027.009] Cryptography Micro-objective::RC4::Encrypt Data
1) [C0021.004] Cryptography Micro-objective::RC4 PRGA::Generate Pseudo-random Sequence
2) [C0049] File System Micro-objective::Get File Attributes
3) [C0051] File System Micro-objective::Read File
4) [C0052] File System Micro-objective::Writes File
5) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
6) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
7) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
8) [C0040] Process Micro-objective::Allocate Thread Local Storage
9) [C0041] Process Micro-objective::Set Thread Local Storage Value
10) [C0018] Process Micro-objective::Terminate Process
11) [C0039] Process Micro-objective::Terminate Thread