MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65. 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 9 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65
SHA3-384 hash: d894e3b767090c02db9bc885a2802e00f08ae8964ea9b5950dfe1ec28492a00c28e9d002da0373627a0ef1fa8e78c59d
SHA1 hash: e4c76b676705a8ffcecb6fc8a9c2424300c9bd6c
MD5 hash: 784d1f5c2ef013a0523ca0616f62698d
humanhash: pasta-mango-summer-diet
File name:784d1f5c2ef013a0523ca0616f62698d.exe
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:2'485'248 bytes
First seen:2021-08-27 08:37:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:6mxGB0x427UGZgDcF8B9JgQLsuJp+t/wF1FWQ70JKlXQPsnrjv/pbxH0LGn5LtpL:6H
Threatray 2'949 similar samples on MalwareBazaar
TLSH T160B58E1869BFD019A0B3FE917EDCA8FADADE55E3240D743B109153174B22B80DE8B479
Reporter abuse_ch
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
157
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
612876_Graphics-Conver.zip
Verdict:
Malicious activity
Analysis date:
2021-08-27 05:22:17 UTC
Tags:
trojan loader rat redline evasion stealer vidar kelihos opendir unwanted netsupport danabot
Link:
https://app.any.run/tasks/ada1d232-d6bc-408f-a198-99c42ef099e0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/182886/
Detection(s):
Win.Packed.Redline-9876022-1
Create hunting rule

Win.Packed.Redline-9879939-1
Create hunting rule

Win.Trojan.Generickdz-9882256-0
Create hunting rule

Win.Trojan.Generickdz-9883081-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Deleting a recently created file
Replacing files
Reading critical registry keys
Creating a window
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
Malware family:
Vidar
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8f77c1a3-79e5-4336-a3c0-504440de0b03
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/840284
Signature
.NET source code contains very large strings
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 472717 Sample: O7FrMwvK3w.exe Startdate: 27/08/2021 Architecture: WINDOWS Score: 92 44 Found malware configuration 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected Vidar 2->48 50 3 other signatures 2->50 8 O7FrMwvK3w.exe 2 2->8         started        process3 file4 30 C:\Users\user\AppData\...\O7FrMwvK3w.exe.log, ASCII 8->30 dropped 11 O7FrMwvK3w.exe 88 8->11         started        16 conhost.exe 8->16         started        18 O7FrMwvK3w.exe 8->18         started        20 O7FrMwvK3w.exe 8->20         started        process5 dnsIp6 40 188.34.200.103, 49723, 80 HETZNER-ASDE Germany 11->40 42 eduarroma.tumblr.com 74.114.154.18, 443, 49722 AUTOMATTICUS Canada 11->42 32 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 11->32 dropped 34 C:\Users\user\AppData\...\vcruntime140[1].dll, PE32 11->34 dropped 36 C:\Users\user\AppData\...\mozglue[1].dll, PE32 11->36 dropped 38 9 other files (none is malicious) 11->38 dropped 52 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->52 54 Tries to harvest and steal browser information (history, passwords, etc) 11->54 56 Tries to steal Crypto Currency Wallets 11->56 22 cmd.exe 1 11->22         started        file7 signatures8 process9 process10 24 taskkill.exe 1 22->24         started        26 conhost.exe 22->26         started        28 timeout.exe 1 22->28         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65/
Threat name:
ByteCode-MSIL.Trojan.Sabsik
Create hunting rule
Status:
Malicious
First seen:
2021-08-26 18:33:23 UTC
AV detection:
16 of 45 (35.56%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=lggzitepb34nqu3eq65zwyx7r67wowftpwsrglqx7my6a6wn3rsq._file
Verdict:
malicious
Similar samples:
077ac4018bc25a85796c54e06872071d561df272188dde34daca7e5d01e950fd
ArkeiStealer
22cfe61a2ee0f1f0cba957fb313ca979e7fc41a2f9a1b5dddf8d9af798113389
ArkeiStealer
3114d9a19def58cc62a9b5dbe78360e64772b46e1815c974f318cafb99eedc98
ArkeiStealer
40480036363a57a125f0ba8d78005327b8e3f7d496d486961e75bf67089034bc
ArkeiStealer
49bcbb42223757d240ccd605c8befefcb38e92aaa87ce09fa0b26ea4a6d9fb34
ArkeiStealer
5e1a4b9ced78b15872e2723b231e3934c4874c6ea28ebf6c983a61f5040b5f96
ArkeiStealer
a2ac6fd6156acf555c5eabc6a1bd33d03f6d569ae5a9485c6c6619d6292fde01
ArkeiStealer
bb9a6242991d0d9bf29011e503cb679537dda42fab5451869ce866b3dada19ca
ArkeiStealer
e168662d0e8575572bfa981af0509029853c5d5fdee0c8dd0d5b9b74813400bb
ArkeiStealer
+ 2'939 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar botnet:921 discovery spyware stealer suricata
Link:
https://tria.ge/reports/210827-fygt33pl26/
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
Reads user/profile data of web browsers
Downloads MZ/PE file
Vidar Stealer
Vidar
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
Malware Config
C2 Extraction:
https://eduarroma.tumblr.com/
Unpacked files
SH256 hash:
316a7a1a8269bf1b9a3c6e0dd9f4d19db74c3f0d2f6f90b4af37b75adcedce0a
MD5 hash:
3fb4a14ab9cd66544c2241c663fd2005
SHA1 hash:
4138613039b8feb8e6ed98f4eeadecc5ff946ab7
Link:
https://www.unpac.me/results/d9289805-af6f-4866-8ae4-99d4775e9f91/
SH256 hash:
598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65
MD5 hash:
784d1f5c2ef013a0523ca0616f62698d
SHA1 hash:
e4c76b676705a8ffcecb6fc8a9c2424300c9bd6c
Link:
https://www.unpac.me/results/d9289805-af6f-4866-8ae4-99d4775e9f91/
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/598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65

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_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_WindDefender_AntiEmaulation
Create hunting rule
Author:ditekSHen
Description:Detects executables containing potential Windows Defender anti-emulation checks
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:RedOctoberPluginCollectInfo
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vidar
Create hunting rule
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 598d944c8f0ef8d8536487bb9b62ff8fbf6758b37da5132e17fb31e07acddc65

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/182886/
  
URLhaus
https://urlhaus.abuse.ch/url/1549508/
  
Delivery method
Distributed via web download

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