MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 18a3ac7fdc9dd873724112c6a390f3c6e5876c6b72664575bb259ad482fdfa18. 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: 10


Intelligence 10 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 18a3ac7fdc9dd873724112c6a390f3c6e5876c6b72664575bb259ad482fdfa18
SHA3-384 hash: 2dae9def71dacb10ee48926fa5faac24e5ea4c8c7368c1ed6990f95896032af732dcef4fc3dc445a74b706f80f918020
SHA1 hash: d8b202a3e682a0ccb3b7ee2295d5d62133cc7458
MD5 hash: 32d1a33a5dc17560ff620016b398fec9
humanhash: mango-triple-failed-fourteen
File name:SecuriteInfo.com.Trojan.Win32.Save.a.15582.17268
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:579'744 bytes
First seen:2021-07-24 21:44:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'647 x AgentTesla, 19'451 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:hFN2IR/OSZkYF3KMdgzNv4IG3MQLQ+RSKua8PB3JsdAZvfGA2HaM:hKlS+MdgSIV0Q+vbSsdAZHOHaM
Threatray 2'033 similar samples on MalwareBazaar
TLSH T1AEC4F18D35B56529C02C0433C4CB52356BB2DBB226A7DEA4D3D0732B4D9A7DCBE06798
dhash icon 0cbd587a96989ea3 (1 x ArkeiStealer)
Reporter SecuriteInfoCom
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
136
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SecuriteInfo.com.Trojan.Win32.Save.a.15582.17268
Verdict:
Malicious activity
Analysis date:
2021-07-24 21:46:31 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/03e989ec-4e5a-48f5-bee6-8c8054718c7b

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/173949/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.15582.17268.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/040ce1d7-8af6-4e74-9f69-58f8325dc01e
Result
Threat name:
Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/821343
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
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 domain / URL
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: 453750 Sample: SecuriteInfo.com.Trojan.Win... Startdate: 24/07/2021 Architecture: WINDOWS Score: 100 41 Multi AV Scanner detection for domain / URL 2->41 43 Found malware configuration 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 6 other signatures 2->47 8 SecuriteInfo.com.Trojan.Win32.Save.a.15582.exe 1 2->8         started        process3 file4 25 SecuriteInfo.com.T...ave.a.15582.exe.log, ASCII 8->25 dropped 49 Injects a PE file into a foreign processes 8->49 12 SecuriteInfo.com.Trojan.Win32.Save.a.15582.exe 92 8->12         started        signatures5 process6 dnsIp7 35 116.202.183.50, 49726, 80 HETZNER-ASDE Germany 12->35 37 shpak125.tumblr.com 74.114.154.18, 443, 49724 AUTOMATTICUS Canada 12->37 39 192.168.2.1 unknown unknown 12->39 27 C:\Users\user\AppData\...\softokn3[1].dll, PE32 12->27 dropped 29 C:\Users\user\AppData\...\freebl3[1].dll, PE32 12->29 dropped 31 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 12->31 dropped 33 9 other files (none is malicious) 12->33 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 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       
Gathering data
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-24 19:40:16 UTC
AV detection:
10 of 28 (35.71%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
08c672cbfc638f1cde4a502afb6b0b907b0a665a6b487a9552cbf48abcb516a1
ArkeiStealer
21aad53d28c5415465bef9cd7b36d0d4708f22b57d77f7d6aca5e2de371c1bb5
ArkeiStealer
2636faa0941a7fd9a889aeb2e4b94fe95f538a588642750ac87d635fd68b5537
ArkeiStealer
474a473bf46fdbfb5a9344937674c1455d764e74c2cd8892da7d59f68ffadd5c
ArkeiStealer
4de4e37b774228061ba08618429b6b5a7d4d1d07cf912035d31a3c5c6150b95e
ArkeiStealer
8ed9f410b41e51f09304e5cdadc4d61f82562c9ee15be810e063f2f568812dd0
ArkeiStealer
b8b2077a4b818a377153b24328151956d8b13a16bda54c82c9be894fa87eed91
ArkeiStealer
c272907c7c9d138993e44dd4e837cd6ac26ce14378acc962a3c4acda14726d42
ArkeiStealer
ce6008f9953e597c3c406a60f3efe1157c4c8eccd5d9d8070a621dfe2f12204b
ArkeiStealer
+ 2'023 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/210724-37f71s89b6/
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://shpak125.tumblr.com/
Unpacked files
SH256 hash:
707a4e199b2295c7898990d2dabc48f7e64dfd3ac0a5fa7214caac9b138138ce
MD5 hash:
b63437fb15604bb7b22a391191b585ef
SHA1 hash:
68a85e9f526d2c3a590d618cc7dae17101a2f285
Link:
https://www.unpac.me/results/9af070bd-7608-4597-9b4e-4469cb05a8db/
SH256 hash:
1ebca3bb092ebef3bd52a7a0ef6e62f286f6c75a2bd226cb33b83dfae1511927
MD5 hash:
d35ace1be17d8a514fe076e40384ded7
SHA1 hash:
64102a7ffc474c1799cf5f07dc0d22191ca43100
Link:
https://www.unpac.me/results/9af070bd-7608-4597-9b4e-4469cb05a8db/
SH256 hash:
18a3ac7fdc9dd873724112c6a390f3c6e5876c6b72664575bb259ad482fdfa18
MD5 hash:
32d1a33a5dc17560ff620016b398fec9
SHA1 hash:
d8b202a3e682a0ccb3b7ee2295d5d62133cc7458
Link:
https://www.unpac.me/results/9af070bd-7608-4597-9b4e-4469cb05a8db/
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/18a3ac7fdc9dd873724112c6a390f3c6e5876c6b72664575bb259ad482fdfa18

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_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:INDICATOR_SUSPICOIUS_EXE_WindDefender_AntiEmaulation
Create hunting rule
Author:ditekSHen
Description:Detects executables containing potential Windows Defender anti-emulation checks
Rule name:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
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 18a3ac7fdc9dd873724112c6a390f3c6e5876c6b72664575bb259ad482fdfa18

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/173949/
  
URLhaus
https://urlhaus.abuse.ch/url/1478798/
  
Delivery method
Distributed via web download

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