MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8a3a422b28079598873b90fb91fcc74242207954fc8827d96765ec5d3144f0e. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8a3a422b28079598873b90fb91fcc74242207954fc8827d96765ec5d3144f0e
SHA3-384 hash: acc8b8e27727d5a3391ee60da726b98201dd278eaaade32c7f8e0e3ee0074d77765b0214887669146a7e066ac456580e
SHA1 hash: ba150facb7314bf4f9acf80b978484b074dd4bdd
MD5 hash: f2047213048ac2ef5d3ddb427eb92057
humanhash: november-georgia-vermont-yellow
File name:f2047213048ac2ef5d3ddb427eb92057.exe
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:714'240 bytes
First seen:2021-07-12 08:56:30 UTC
Last seen:2021-07-12 09:59:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:qspU6Ksa/JRRmLbv8Wu9fzqJyYJKCM3t0j/JeXL1h94aZPtHAkM/+LokX9kX:la/JXmnvMgJncCM36DsZQaZPtHAJ/MoD
Threatray 1'741 similar samples on MalwareBazaar
TLSH T1A3E42300FFA49A19E6D547B3C9C3E1C813F986028567D6693DCF4F3D8B02B92994A63D
Reporter abuse_ch
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
122
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f2047213048ac2ef5d3ddb427eb92057.exe
Verdict:
Malicious activity
Analysis date:
2021-07-12 09:13:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b013a9d6-2459-4361-bb51-9591bf54fe6b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/171002/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader40.34428.6871.20687.UNOFFICIAL
Create hunting rule

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.
Malware family:
Vidar
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e54aebf3-76eb-4354-b525-4ba424d891a6
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/814685
Signature
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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
Writes to foreign memory regions
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 447096 Sample: fudCS9eNB4.exe Startdate: 12/07/2021 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected Vidar 2->49 51 4 other signatures 2->51 8 fudCS9eNB4.exe 5 2->8         started        process3 file4 25 C:\Users\user\AppData\...\fudCS9eNB4.exe, PE32 8->25 dropped 27 C:\Users\...\fudCS9eNB4.exe:Zone.Identifier, ASCII 8->27 dropped 29 C:\Users\user\AppData\...\fudCS9eNB4.exe.log, ASCII 8->29 dropped 53 Writes to foreign memory regions 8->53 55 Injects a PE file into a foreign processes 8->55 12 fudCS9eNB4.exe 91 8->12         started        signatures5 process6 dnsIp7 39 sergeevih43.tumblr.com 74.114.154.22, 443, 49735 AUTOMATTICUS Canada 12->39 41 162.55.223.232, 49736, 80 ACPCA United States 12->41 43 192.168.2.1 unknown unknown 12->43 31 C:\Users\user\AppData\...\softokn3[1].dll, PE32 12->31 dropped 33 C:\Users\user\AppData\...\freebl3[1].dll, PE32 12->33 dropped 35 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 12->35 dropped 37 9 other files (none is malicious) 12->37 dropped 57 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->57 59 Machine Learning detection for dropped file 12->59 61 Tries to harvest and steal browser information (history, passwords, etc) 12->61 63 Tries to steal Crypto Currency Wallets 12->63 17 cmd.exe 1 12->17         started        file8 signatures9 process10 process11 19 taskkill.exe 1 17->19         started        21 conhost.exe 17->21         started        23 timeout.exe 1 17->23         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8a3a422b28079598873b90fb91fcc74242207954fc8827d96765ec5d3144f0e/
Threat name:
ByteCode-MSIL.Trojan.Chapak
Create hunting rule
Status:
Malicious
First seen:
2021-07-10 22:25:02 UTC
AV detection:
14 of 29 (48.28%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
096e8c1a31c8f8f0238c812422b4298e0c77b5e77ae93250e4fae24758e7c574
ArkeiStealer
1caf2367b85edbe5a5330d1edee51ac80aaacb99529d98a22cf847381db56edf
ArkeiStealer
2c1e4de15b0a08e77555d4b16f2bb56fae378081a9411138d323b6b52a7e891b
ArkeiStealer
60c47c555c49428dd6623e73049c936e7a42687ce6506ee1e6b614585b52714f
ArkeiStealer
8be9cec521fca3b82e924f94f7d13b253a9259c0ead8cabc4a71cd26d2ca8b7b
ArkeiStealer
b55dd061a60905c3a2208917883d326b08a3a7d1f8fdb94f78e6675375fc8219
ArkeiStealer
cee8738edc8a8a93d3313ad03698b456d39f5acaacaf357e4580784e45692369
ArkeiStealer
d4272fe57997732ba267f52ef06d823f9b186f91cf637a9795b6f161a5e79ef8
ArkeiStealer
d6ff71f4320761a9d08e753f0fe917ff018df8000405f1e789ce2f20dd22bc76
ArkeiStealer
eed5d4d5f2526cef97edf23ca6e02dc2579d3ac443b7a9f0b663119a90f1cf13
ArkeiStealer
+ 1'731 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:vidar botnet:313 discovery spyware stealer
Link:
https://tria.ge/reports/210712-y8v56z7gd6/
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
Malware Config
C2 Extraction:
https://sergeevih43.tumblr.com/
Unpacked files
SH256 hash:
c479afa5916cf0483cbe819d20058d45d47becda7f04d55050dce71f17eaf2b4
MD5 hash:
ebcb9e3b9ce908f5626d9629b9c0f199
SHA1 hash:
aa27a0f1c3ede41806b1c4db6cc0bd08738c56b0
Link:
https://www.unpac.me/results/56a1c77c-b665-44e5-8fbb-c6c3d64253af/
SH256 hash:
971a2e39e9361f6b961059fb01814934dc2cac7cd9c6d365228f5296f9c6f461
MD5 hash:
9afbc29edee89f8465901c10ecbcd180
SHA1 hash:
8965ecbb6fbf21abbda8f540c706638e9498d561
Link:
https://www.unpac.me/results/56a1c77c-b665-44e5-8fbb-c6c3d64253af/
SH256 hash:
3473eaf0eca8ff7b24cd0bddd4e05eaea80cd94fdfb2c0874ac4afb7a0b1d928
MD5 hash:
938b9375a37f03b304cfc2b501b62f9b
SHA1 hash:
30502c59b6962877a49ffd03131792d48b5da7da
Link:
https://www.unpac.me/results/56a1c77c-b665-44e5-8fbb-c6c3d64253af/
SH256 hash:
a8a3a422b28079598873b90fb91fcc74242207954fc8827d96765ec5d3144f0e
MD5 hash:
f2047213048ac2ef5d3ddb427eb92057
SHA1 hash:
ba150facb7314bf4f9acf80b978484b074dd4bdd
Link:
https://www.unpac.me/results/56a1c77c-b665-44e5-8fbb-c6c3d64253af/
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/a8a3a422b28079598873b90fb91fcc74242207954fc8827d96765ec5d3144f0e

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

ArkeiStealer

Executable exe a8a3a422b28079598873b90fb91fcc74242207954fc8827d96765ec5d3144f0e

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1427014/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/171002/

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