MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f. 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: 13


Intelligence 13 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f
SHA3-384 hash: 093c8e7c3173e2234f87094571ac2a2e30dd06bf7fca4c1c6604a97d2d3454a401d0288353625a0d10f4f7ea05393e7d
SHA1 hash: 22455d2e62d52efc7a9c6e767148e70e5f284fc3
MD5 hash: 57171a379041d8c06e0b75be89294a13
humanhash: utah-queen-eighteen-wyoming
File name:c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:811'520 bytes
First seen:2021-09-09 11:58:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d5cdc30877a202456bbe03f8e48575f4 (2 x RaccoonStealer, 1 x ArkeiStealer)
ssdeep 24576:t0rNdXWpxbVPv75gUAnoczubckY2HoPQcqK:tmXEDyRCbwRPQ
Threatray 596 similar samples on MalwareBazaar
TLSH T1CE05F131A6A1C034F5B211F855BA83BDB8293AB17B7440CF93E12AED56386F5ED30716
dhash icon ead8a89cc6e68ee0 (43 x RaccoonStealer, 31 x RedLineStealer, 20 x Smoke Loader)
Reporter JAMESWT_WT
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f
Verdict:
Suspicious activity
Analysis date:
2021-09-09 12:19:41 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2bfa76b6-3145-4cde-a532-7bfa6fa958c7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
STOP
Create hunting rule
Link:
https://www.capesandbox.com/analysis/186635/
Detection(s):
Win.Dropper.Brook-9888361-0
Create hunting rule

Win.Packed.Generic-9888421-0
Create hunting rule

Win.Dropper.Brook-9888423-0
Create hunting rule

Win.Packed.Generic-9888502-0
Create hunting rule

Win.Packed.Generic-9888541-0
Create hunting rule

Win.Dropper.Fragtor-9888544-0
Create hunting rule

Win.Packed.Generic-9888547-0
Create hunting rule

Win.Packed.Generic-9888595-0
Create hunting rule

Win.Packed.Raccoon-9888422-1
Create hunting rule

Win.Packed.Raccoon-9888451-1
Create hunting rule

Win.Packed.Raccoon-9888527-1
Create hunting rule

Win.Packed.Raccoon-9888528-1
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Connection attempt
Sending a custom TCP request
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
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
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/311ee904-5887-44c9-8655-e29f55a7ea74
Result
Threat name:
Djvu Vidar Zorab
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/848081
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
Infects executable files (exe, dll, sys, html)
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 dropped file
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)
Writes many files with high entropy
Yara detected Djvu Ransomware
Yara detected Vidar
Yara detected Vidar stealer
Yara detected Zorab Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 480514 Sample: NRdcwB5pUp Startdate: 09/09/2021 Architecture: WINDOWS Score: 100 38 gheorghip.tumblr.com 74.114.154.22, 443, 49759 AUTOMATTICUS Canada 2->38 40 162.55.179.90, 49760, 80 ACPCA United States 2->40 42 api.2ip.ua 2->42 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Multi AV Scanner detection for domain / URL 2->56 58 Antivirus detection for URL or domain 2->58 60 10 other signatures 2->60 9 NRdcwB5pUp.exe 2->9         started        12 NRdcwB5pUp.exe 2->12         started        signatures3 process4 signatures5 62 Detected unpacking (changes PE section rights) 9->62 64 Contains functionality to inject code into remote processes 9->64 66 Writes many files with high entropy 9->66 14 NRdcwB5pUp.exe 1 16 9->14         started        68 Injects a PE file into a foreign processes 12->68 process6 dnsIp7 50 api.2ip.ua 77.123.139.190, 443, 49754, 49755 VOLIA-ASUA Ukraine 14->50 36 C:\Users\...36RdcwB5pUp.exe:Zone.Identifier, ASCII 14->36 dropped 18 NRdcwB5pUp.exe 14->18         started        21 icacls.exe 14->21         started        file8 process9 signatures10 52 Injects a PE file into a foreign processes 18->52 23 NRdcwB5pUp.exe 1 20 18->23         started        process11 dnsIp12 44 securebiz.org 124.109.61.160, 49756, 80 NAYATEL-PKNayatelPvtLtdPK Pakistan 23->44 46 192.168.2.1 unknown unknown 23->46 48 2 other IPs or domains 23->48 28 {3DA71D5A-20CC-432...0016.db.orkf (copy), COM 23->28 dropped 30 C:\Users\...\iecompatdata.xml.orkf (copy), DOS 23->30 dropped 32 C:\Users\user\...behaviorgraphB.XSL.orkf (copy), DOS 23->32 dropped 34 392 other files (381 malicious) 23->34 dropped 70 Infects executable files (exe, dll, sys, html) 23->70 72 Modifies existing user documents (likely ransomware behavior) 23->72 file13 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2021-09-08 11:34:00 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
25 of 28 (89.29%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zegt72ledut2lfiq4iaadpbrlxa3o2ls6a7jcdrnog6wzxqota7q._file
Verdict:
malicious
Similar samples:
20ebe8ff1da6f2023a43b3e3cbe14479961699f9dec0324f72070fa2b275eaae
ArkeiStealer
496b5885ff8f521c91ca037338e188ea0374bf86816d0c804d3010fd2f5fec38
ArkeiStealer
9634e7bbda11d42ed7eda4f7cc1965dea16ab45877cb425d322e830cf63a0657
ArkeiStealer
9feb26b9550dbf46719374757468d95b6882c00fd3ca65a02e9edf2854e900a9
ArkeiStealer
b055016e0d82c57b58cd126f26b4b8f4dae1441f0019bdaa42452e815f128944
ArkeiStealer
bfbf6bb9393e511a06e90d432e7538059ae75f9f1525f0f503d1d0bec0d32124
ArkeiStealer
e81e9dfe89a98449992b1ca9e4acb9905b606dc3de186b9de94241bde3b230be
ArkeiStealer
e8bcd430d48c430ced6992340cbce21ffc1a4d8cc60e6255b76870d33a5ea6b9
ArkeiStealer
ff9e059a789e94573fb32a918657d5c5c59b5395fab873cbcec7b1543435fe93
ArkeiStealer
+ 586 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/210909-n471asbcel/
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://gheorghip.tumblr.com/
Unpacked files
SH256 hash:
e262e9ebcd2063c95672d7903c2d737903043c646211e2c65581b24fe06bac77
MD5 hash:
c64898970ef5c32165ea1a4b5a6a470a
SHA1 hash:
31469dd38f4741e7cb883d5f683a1a26b497d441
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/17776562-dfd0-410d-b8fd-67e29c999bf3/
Parent samples :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 hash:
c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f
MD5 hash:
57171a379041d8c06e0b75be89294a13
SHA1 hash:
22455d2e62d52efc7a9c6e767148e70e5f284fc3
Link:
https://www.unpac.me/results/17776562-dfd0-410d-b8fd-67e29c999bf3/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c90d3fe9641d/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/c90d3fe9641d27a59510e20001bc315dc1b76972f03e910e2d71bd6cde0e983f

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:MALWARE_Win_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
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.

Cape
Cape
https://www.capesandbox.com/analysis/186635/

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