MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b1bb5b4ec520f876013a1607c28097c02c7e93d6a1e908af320d633d3d0a76b. 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: 9


Intelligence 9 IOCs YARA 6 File information Comments

SHA256 hash: 4b1bb5b4ec520f876013a1607c28097c02c7e93d6a1e908af320d633d3d0a76b
SHA3-384 hash: 89a825db21fda5f4d4162506d63913763735a2b3be056bf5628ae7ca311a2409ed55d0f15f9d9c96264018371fda73bb
SHA1 hash: 112438f083f73a42aee4390279749c4da4ecc93f
MD5 hash: 9fdc22cfd95d8a88d85f3b72791790b4
humanhash: island-moon-magazine-wolfram
File name:9fdc22cfd95d8a88d85f3b72791790b4.exe
Download: download sample
Signature ArkeiStealer
File size:498'352 bytes
First seen:2021-07-16 09:40:13 UTC
Last seen:2021-07-16 10:41:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:/Ia0Mp01kkC21BW1lGz3I/+lr/73/Czmxj1:/I+Ht21k1AM4rrJxR
Threatray 1'812 similar samples on MalwareBazaar
TLSH T1B3B4F14AEF09C459E6BC6E31A4D766FA5D380CA24447EB0587B4EE0D9C773C03EA69C1
Reporter abuse_ch
Tags:ArkeiStealer exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
141
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
9fdc22cfd95d8a88d85f3b72791790b4.exe
Verdict:
Malicious activity
Analysis date:
2021-07-16 09:42:41 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
UNKNOWN
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:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Signature
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Multi AV Scanner detection for submitted file
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
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 449804 Sample: m35HWit4so.exe Startdate: 16/07/2021 Architecture: WINDOWS Score: 92 41 Found malware configuration 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 Yara detected Vidar 2->45 47 2 other signatures 2->47 8 m35HWit4so.exe 3 2->8         started        process3 file4 27 C:\Users\user\AppData\...\m35HWit4so.exe.log, ASCII 8->27 dropped 49 Injects a PE file into a foreign processes 8->49 12 m35HWit4so.exe 92 8->12         started        17 m35HWit4so.exe 8->17         started        signatures5 process6 dnsIp7 37 116.202.183.50, 49749, 80 HETZNER-ASDE Germany 12->37 39 sslamlssa1.tumblr.com 74.114.154.22, 443, 49747 AUTOMATTICUS Canada 12->39 29 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 12->29 dropped 31 C:\Users\user\AppData\...\mozglue[1].dll, PE32 12->31 dropped 33 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 12->33 dropped 35 9 other files (none is malicious) 12->35 dropped 51 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->51 53 Tries to harvest and steal browser information (history, passwords, etc) 12->53 55 Tries to steal Crypto Currency Wallets 12->55 19 cmd.exe 1 12->19         started        file8 signatures9 process10 process11 21 taskkill.exe 1 19->21         started        23 conhost.exe 19->23         started        25 timeout.exe 1 19->25         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-07-16 06:53:12 UTC
AV detection:
14 of 28 (50.00%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:vidar botnet:903 agilenet discovery spyware stealer
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
Suspicious use of SetThreadContext
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
Obfuscated with Agile.Net obfuscator
Reads user/profile data of web browsers
Downloads MZ/PE file
Vidar Stealer
Vidar
Malware Config
C2 Extraction:
https://sslamlssa1.tumblr.com/
Unpacked files
SH256 hash:
c817f60d755607d5185c0d1b5d4e4cd29f1a06e814ffb0396ada49ff68105e0d
MD5 hash:
a16d3ea65662a9b2aee7b47118a73abd
SHA1 hash:
a674e1bf682a5a1be31d4c5c9dc8770daa93e48c
SH256 hash:
19234614c7a4bc6c4c0d0342fbd342b7b48acfe581cd0cca42d6f4ad3d388fad
MD5 hash:
483e494cd93dd5d25dc6d9cdfef92a1f
SHA1 hash:
8cb19f15df6ad769b632ce64aab0b7468948dc39
SH256 hash:
4b1bb5b4ec520f876013a1607c28097c02c7e93d6a1e908af320d633d3d0a76b
MD5 hash:
9fdc22cfd95d8a88d85f3b72791790b4
SHA1 hash:
112438f083f73a42aee4390279749c4da4ecc93f
Please note that we are no longer able to provide a coverage score for Virus Total.

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_SUSPICOIUS_EXE_WindDefender_AntiEmaulation
Author:ditekSHen
Description:Detects executables containing potential Windows Defender anti-emulation checks
Rule name:MALWARE_Win_Vidar
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:pe_imphash
Rule name:RedOctoberPluginCollectInfo
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Vidar
Author:kevoreilly
Description:Vidar Payload

File information


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

Web download

ArkeiStealer

Executable exe 4b1bb5b4ec520f876013a1607c28097c02c7e93d6a1e908af320d633d3d0a76b

(this sample)

  
Delivery method
Distributed via web download

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