MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e. 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: 12


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e
SHA3-384 hash: 4da3d2727453e9f88ecbbdd348a1de3951ef26a07554ddd3e8e6c515ad7557ecad073f29bd727d659460c438fde5b2f6
SHA1 hash: ee14ff58decbdd7d9d9908a93de009556dd0840a
MD5 hash: 00326b533abf1a5ad4fa70b4962ab98f
humanhash: papa-friend-kitten-bacon
File name:3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:813'056 bytes
First seen:2021-09-03 09:05:16 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 62fa754aafe9b531ba4be35dd30caae7 (5 x Amadey, 4 x Smoke Loader, 3 x RaccoonStealer)
ssdeep 12288:ub4sQdFbb3z0hBMwN+zfMboyHaMDHS9lPTnsLUvlmG6Ua4NabG0+Y7G3esu0cH6G:u4sQ7Mkt4aiyvPTnnvlQ4NGGes8D
Threatray 478 similar samples on MalwareBazaar
TLSH T18405F1207681C075E0A713F558A592A8AB2CBDB05B2451EF62DA37FE37386D4DC3137A
dhash icon ead8ac9cc6e68ee0 (118 x RaccoonStealer, 102 x RedLineStealer, 46 x Smoke Loader)
Reporter JAMESWT_WT
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
120
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e
Verdict:
Suspicious activity
Analysis date:
2021-09-03 09:19:26 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ffb4b50c-5d87-4ef9-bfec-d4f31117da3b

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/185098/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader41.16114.UNOFFICIAL
Create hunting rule

Win.Malware.Generic-9887080-0
Create hunting rule

Win.Malware.Generic-9887136-0
Create hunting rule

Win.Malware.Generic-9887165-0
Create hunting rule

Win.Malware.Generic-9887166-0
Create hunting rule

Win.Malware.Generic-9887275-0
Create hunting rule

Win.Malware.Generic-9887281-0
Create hunting rule

Win.Malware.Raccoon-9887772-1
Create hunting rule

Win.Malware.Pwsx-9888043-0
Create hunting rule

Win.Packed.Generickdz-9889118-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Sending a custom TCP request
Connection attempt
Sending a UDP request
Creating a file
Launching a process
Creating a process with a hidden window
Adding an access-denied ACE
Deleting a recently created file
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Enabling autorun by creating a file
Malware family:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/fcd95644-afb6-405e-95a7-e37094235a1a
Result
Threat name:
Djvu Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/844754
Signature
Antivirus detection for URL or domain
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Found ransom note / readme
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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 many files with high entropy
Yara detected Djvu Ransomware
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 477186 Sample: 94wJiqcg1T Startdate: 03/09/2021 Architecture: WINDOWS Score: 100 62 api.2ip.ua 2->62 78 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->78 80 Multi AV Scanner detection for domain / URL 2->80 82 Antivirus detection for URL or domain 2->82 84 7 other signatures 2->84 11 94wJiqcg1T.exe 2->11         started        14 94wJiqcg1T.exe 2->14         started        16 94wJiqcg1T.exe 2->16         started        signatures3 process4 signatures5 100 Detected unpacking (changes PE section rights) 11->100 102 Contains functionality to inject code into remote processes 11->102 104 Writes many files with high entropy 11->104 18 94wJiqcg1T.exe 1 16 11->18         started        106 Injects a PE file into a foreign processes 14->106 22 94wJiqcg1T.exe 14->22         started        24 94wJiqcg1T.exe 12 16->24         started        process6 dnsIp7 64 api.2ip.ua 77.123.139.190, 443, 49701, 49702 VOLIA-ASUA Ukraine 18->64 52 C:\Users\...\94wJiqcg1T.exe:Zone.Identifier, ASCII 18->52 dropped 26 94wJiqcg1T.exe 18->26         started        29 icacls.exe 18->29         started        file8 process9 signatures10 98 Injects a PE file into a foreign processes 26->98 31 94wJiqcg1T.exe 1 20 26->31         started        process11 dnsIp12 70 securebiz.org 121.136.102.4, 49703, 80 KIXS-AS-KRKoreaTelecomKR Korea Republic of 31->70 72 astdg.top 31->72 74 api.2ip.ua 31->74 44 C:\Users\user\AppData\...\Placement[1].json, COM 31->44 dropped 46 Uninstall-PerMachi...074451_aa8-131c.log, DOS 31->46 dropped 48 C:\...\FileSync.LocalizedResources.dll.mui, DOS 31->48 dropped 50 405 other files (396 malicious) 31->50 dropped 76 Modifies existing user documents (likely ransomware behavior) 31->76 36 build2.exe 31->36         started        file13 signatures14 process15 signatures16 86 Detected unpacking (changes PE section rights) 36->86 88 Machine Learning detection for dropped file 36->88 90 Injects a PE file into a foreign processes 36->90 39 build2.exe 36->39         started        process17 dnsIp18 66 49.12.198.69, 49710, 80 HETZNER-ASDE Germany 39->66 68 romkaxarit.tumblr.com 74.114.154.18, 443, 49709 AUTOMATTICUS Canada 39->68 54 C:\Users\user\AppData\...\softokn3[1].dll, PE32 39->54 dropped 56 C:\Users\user\AppData\...\mozglue[1].dll, PE32 39->56 dropped 58 C:\Users\user\AppData\...\freebl3[1].dll, PE32 39->58 dropped 60 9 other files (none is malicious) 39->60 dropped 92 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 39->92 94 Tries to harvest and steal browser information (history, passwords, etc) 39->94 96 Tries to steal Crypto Currency Wallets 39->96 file19 signatures20
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2021-08-19 08:35:08 UTC
File Type:
PE (Exe)
Extracted files:
38
AV detection:
35 of 43 (81.40%)
Threat level:
  5/5
Verdict:
malicious
Similar samples:
20ebe8ff1da6f2023a43b3e3cbe14479961699f9dec0324f72070fa2b275eaae
ArkeiStealer
496b5885ff8f521c91ca037338e188ea0374bf86816d0c804d3010fd2f5fec38
ArkeiStealer
9634e7bbda11d42ed7eda4f7cc1965dea16ab45877cb425d322e830cf63a0657
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9feb26b9550dbf46719374757468d95b6882c00fd3ca65a02e9edf2854e900a9
ArkeiStealer
b055016e0d82c57b58cd126f26b4b8f4dae1441f0019bdaa42452e815f128944
ArkeiStealer
bfbf6bb9393e511a06e90d432e7538059ae75f9f1525f0f503d1d0bec0d32124
ArkeiStealer
e81e9dfe89a98449992b1ca9e4acb9905b606dc3de186b9de94241bde3b230be
ArkeiStealer
e8bcd430d48c430ced6992340cbce21ffc1a4d8cc60e6255b76870d33a5ea6b9
ArkeiStealer
ff9e059a789e94573fb32a918657d5c5c59b5395fab873cbcec7b1543435fe93
ArkeiStealer
+ 468 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:517 discovery persistence ransomware spyware stealer suricata
Link:
https://tria.ge/reports/210903-k2rnragack/
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
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Vidar Stealer
Detected Djvu ransomeware
Djvu Ransomware
Vidar
suricata: ET MALWARE Potential Dridex.Maldoc Minimal Executable Request
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://romkaxarit.tumblr.com/
Unpacked files
SH256 hash:
4580e62c1de80a1dc7e0117123e27ee037497748c4d69cc3f741d2a7e2a904cc
MD5 hash:
32dcd958a4932403c46da0764b69378b
SHA1 hash:
82e34d8dd50a9cca0224b36d05d414a47f4eb68b
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/94848956-4548-4701-89fc-497289b23323/
Parent samples :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 hash:
3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e
MD5 hash:
00326b533abf1a5ad4fa70b4962ab98f
SHA1 hash:
ee14ff58decbdd7d9d9908a93de009556dd0840a
Link:
https://www.unpac.me/results/94848956-4548-4701-89fc-497289b23323/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3a3c73c139d1/report/overview.html
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/3a3c73c139d12addf585756334a51fb8ca6381a27531c67ba306923a08fbb05e

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/185098/

Comments