MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37c73441b4721b0231c8794d6d4fde63de828dbf59c18f64a52c7fc2e456fa80. 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


Stop


Vendor detections: 14


Intelligence 14 IOCs 1 YARA 10 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 37c73441b4721b0231c8794d6d4fde63de828dbf59c18f64a52c7fc2e456fa80
SHA3-384 hash: 6083af3790513bcd29d50881b3f7572dbde0d48a01fa21a1c72093157d213720d753dd046a77f5905c9d055b92134198
SHA1 hash: cba4fa9c564afb91c90cfbb4c1fab5fdf48bf427
MD5 hash: 64671d1076995eba854718f19035bb6e
humanhash: harry-gee-butter-yankee
File name:64671d1076995eba854718f19035bb6e
Download: download sample
Signature Stop
Create hunting rule
File size:767'488 bytes
First seen:2022-03-03 07:21:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 228816d69bd3a411b4d5428ddd50c94c (1 x Stop)
ssdeep 12288:54xIlqBc3GGdzvWGiHI6MH8OKUUHIDH9UwRN4A0yS20r7kH8+IZcdAq/J+U4:5puk7aGEESo9UoNkyK3+ugJS
TLSH T18BF422827410DC76C44690B190A4CAE9EBEEFC135564DD837B68BB2E0F313E1E676789
File icon (PE):PE icon
dhash icon 38b078cccacecc43 (14 x Smoke Loader, 7 x Stop, 5 x ArkeiStealer)
Reporter zbetcheckin
Tags:32 exe Stop

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://fuyt.org/lancer/get.php https://threatfox.abuse.ch/ioc/392251/

Intelligence

File Origin
# of uploads :
1
# of downloads :
211
Origin country :
n/a
Vendor Threat Intelligence
Detection:
STOP
Create hunting rule
Link:
https://www.capesandbox.com/analysis/246696/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48490258.12371.22058.UNOFFICIAL
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
Sending an HTTP GET request
Creating a file
Launching a process
Creating a process with a hidden window
Adding an access-denied ACE
Сreating synchronization primitives
Deleting a recently created file
Searching for synchronization primitives
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Enabling autorun by creating a file
Sending an HTTP GET request to an infection source
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/7968/overview
Behaviour
SystemUptime
MeasuringTime
EvasionQueryPerformanceCounter
CheckCmdLine
EvasionGetTickCount
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:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d574f27e-8f9d-4472-a5d4-4736771f0f5c
Result
Threat name:
Djvu Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/949711
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
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
Malicious sample detected (through community Yara rule)
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
Tries to steal Mail credentials (via file / registry access)
Writes many files with high entropy
Yara detected Djvu Ransomware
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 582192 Sample: rWuud38tap Startdate: 03/03/2022 Architecture: WINDOWS Score: 100 96 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->96 98 Multi AV Scanner detection for domain / URL 2->98 100 Found malware configuration 2->100 102 12 other signatures 2->102 12 rWuud38tap.exe 2->12         started        15 rWuud38tap.exe 2->15         started        17 rWuud38tap.exe 2->17         started        19 rWuud38tap.exe 2->19         started        process3 signatures4 114 Contains functionality to inject code into remote processes 12->114 116 Writes many files with high entropy 12->116 118 Injects a PE file into a foreign processes 12->118 21 rWuud38tap.exe 1 17 12->21         started        25 rWuud38tap.exe 13 15->25         started        28 rWuud38tap.exe 13 17->28         started        30 rWuud38tap.exe 19->30         started        process5 dnsIp6 80 api.2ip.ua 77.123.139.190, 443, 49749, 49750 VOLIA-ASUA Ukraine 21->80 58 C:\Users\...\rWuud38tap.exe:Zone.Identifier, ASCII 21->58 dropped 60 C:\Users\user\AppData\...\rWuud38tap.exe, MS-DOS 21->60 dropped 32 rWuud38tap.exe 21->32         started        35 icacls.exe 21->35         started        62 C:\Users\user\Desktop\...\PIVFAGEAAV.jpg, data 25->62 dropped 108 Modifies existing user documents (likely ransomware behavior) 25->108 82 192.168.2.1 unknown unknown 28->82 file7 signatures8 process9 signatures10 94 Injects a PE file into a foreign processes 32->94 37 rWuud38tap.exe 1 23 32->37         started        process11 dnsIp12 84 fuyt.org 88.158.247.38, 49752, 49754, 80 SNR-RO Romania 37->84 86 zerit.top 124.109.61.160, 49751, 80 NAYATEL-PKNayatelPvtLtdPK Pakistan 37->86 88 api.2ip.ua 37->88 64 C:\Users\user\AppData\Local\...\build2[1].exe, PE32 37->64 dropped 66 C:\_readme.txt, ASCII 37->66 dropped 68 C:\Users\...\SmartScreenCache.dat.sdjm (copy), data 37->68 dropped 70 34 other files (32 malicious) 37->70 dropped 104 Infects executable files (exe, dll, sys, html) 37->104 106 Modifies existing user documents (likely ransomware behavior) 37->106 42 build2.exe 37->42         started        file13 signatures14 process15 signatures16 110 Writes many files with high entropy 42->110 112 Injects a PE file into a foreign processes 42->112 45 build2.exe 42->45         started        process17 dnsIp18 90 94.130.188.151, 49760, 80 HETZNER-ASDE Germany 45->90 92 mastodon.online 95.216.4.252, 443, 49758 HETZNER-ASDE Germany 45->92 72 d06ed635-68f6-4e9a...57b9a3963867188.zip, Zip 45->72 dropped 74 C:\Users\user\AppData\Local\...\nss3[1].dll, PE32 45->74 dropped 76 C:\Users\user\AppData\...\msvcp140[1].dll, PE32 45->76 dropped 78 10 other files (none is malicious) 45->78 dropped 120 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 45->120 122 Tries to steal Mail credentials (via file / registry access) 45->122 124 Tries to harvest and steal browser information (history, passwords, etc) 45->124 126 Tries to steal Crypto Currency Wallets 45->126 50 cmd.exe 45->50         started        file19 signatures20 process21 process22 52 conhost.exe 50->52         started        54 taskkill.exe 50->54         started        56 timeout.exe 50->56         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/37c73441b4721b0231c8794d6d4fde63de828dbf59c18f64a52c7fc2e456fa80/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-03-02 15:52:35 UTC
File Type:
PE (Exe)
Extracted files:
17
AV detection:
25 of 27 (92.59%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g7dtiqnuoinqemoipfgw2t66mppifdn7lhay6zfffr74fzcw7kaa._file
Verdict:
malicious
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/220303-h683gsbchl/
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
Checks computer location settings
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Vidar Stealer
Detected Djvu ransomware
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 Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata: ET MALWARE Vidar/Arkei Stealer Client Data Upload
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
Malware Config
C2 Extraction:
http://fuyt.org/lancer/get.php
https://mastodon.online@samsa11
https://koyu.space/@samsa2l
Unpacked files
SH256 hash:
82ac70527741d4749b9c77350fa5e7c52bd6f7cf9cd3f01335db4070048e23f5
MD5 hash:
d5580098828f0d144bf9516c337eb9ac
SHA1 hash:
f21063873f4f4fbd7216f3fce07ad3998d9860a2
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/39c5eea6-09f2-46a3-a066-946a2322b366/
SH256 hash:
37c73441b4721b0231c8794d6d4fde63de828dbf59c18f64a52c7fc2e456fa80
MD5 hash:
64671d1076995eba854718f19035bb6e
SHA1 hash:
cba4fa9c564afb91c90cfbb4c1fab5fdf48bf427
Link:
https://www.unpac.me/results/39c5eea6-09f2-46a3-a066-946a2322b366/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/37c73441b472/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/37c73441b4721b0231c8794d6d4fde63de828dbf59c18f64a52c7fc2e456fa80

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_SandboxHookingDLL
Create hunting rule
Author:ditekSHen
Description:Detects binaries and memory artifcats referencing sandbox DLLs typically observed in sandbox evasion
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
Rule name:win_stop_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stop.
Rule name:XOREngine_Misc_XOR_Func
Create hunting rule
Author:smiller cc @florian @wesley idea on implementation with yara's built in XOR function
Description:Use with care, https://twitter.com/cyb3rops/status/1237042104406355968

File information

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

Web download

Stop

Executable exe 37c73441b4721b0231c8794d6d4fde63de828dbf59c18f64a52c7fc2e456fa80

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2072292/
Cape
Cape
https://www.capesandbox.com/analysis/246696/

Comments


Avatar
zbet commented on 2022-03-03 07:21:54 UTC

url : hxxp://79.133.56.44/myblog/img/123.exe