MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b
SHA3-384 hash: 3153c4d01cc4a530f4dd16164cf198d91fadc2dd59076afc31bf2fe72336c2916d1fc59d07adb2e527006ac345c06dc4
SHA1 hash: 0a66bab36b786b670b669240e658509eb8dba49f
MD5 hash: 96a2cd02114c907895a0482b67433536
humanhash: fillet-coffee-hydrogen-sink
File name:4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b
Download: download sample
Signature Stop
Create hunting rule
File size:798'272 bytes
First seen:2021-09-08 09:07:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 41ae3a1dcdcc3462598a2d3012d6e252 (9 x RaccoonStealer, 2 x Stop, 1 x Smoke Loader)
ssdeep 12288:7PH1/RsQXjeuRgD+l6udVfD3l/gkYvEHeLvKK8gpP+x1IRPhBF:79FXKx8dp3l/MQeLvR86aIv
Threatray 566 similar samples on MalwareBazaar
TLSH T1170512613261FDAED49452344710DAF7EB26B8B0A8A0D3573696774A1F7C2903F22FD2
dhash icon fcfcd4d4d4dcd8c0 (52 x RaccoonStealer, 28 x RedLineStealer, 6 x Smoke Loader)
Reporter JAMESWT_WT
Tags:exe Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
124
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b
Verdict:
Suspicious activity
Analysis date:
2021-09-08 09:16:38 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/34e31852-ab97-4f82-9af7-8d70303c4ab8

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/186278/
Detection(s):
Win.Packed.Generic-9889668-0
Create hunting rule

Win.Packed.Generic-9889733-0
Create hunting rule

Win.Dropper.Fragtor-9889898-0
Create hunting rule

Win.Dropper.Fragtor-9889962-0
Create hunting rule

Win.Packed.Raccoon-9889505-1
Create hunting rule

Win.Packed.Filerepmalware-9890038-0
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
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
Sending a UDP 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/cd25c1bf-858e-494f-aa27-87dc9682e7d6
Result
Threat name:
Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/847249
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b/
Threat name:
Win32.Trojan.Fragtor
Create hunting rule
Status:
Malicious
First seen:
2021-09-05 06:55:00 UTC
File Type:
PE (Exe)
Extracted files:
83
AV detection:
34 of 45 (75.56%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jpytc5moikw5xlmvdox2kzvnyvwcyyf6ipvb6sfmads7pzji55nq._file
Verdict:
malicious
Similar samples:
037e3a20ff7b6e369c768c95e9ea976b1e2fe80a5d4625c569a3bb98aa467a35
Stop
0a644c28fba57280abf3226ace12e8aa12f284f78485423b7c358ed29f515167
Stop
26967c1b5ff6848501ddf70985408b7736835286f788f663e086f34aecd6bfb1
Stop
35be1a97d304ab4b045cb2e608c22dd2c7efb4df1e86cdd4e0b780bdf1c21838
Stop
47d6022eaad843e702e839fd027870f7089bd19ba6548e36bf5e82b5c70a2f23
Stop
804b9c87f98a32101b51f26c221e589bc80350b69c163abfab2de64f7e9b3e72
Stop
99ee06f5fb4f0aa90678d6a6405d2d01138bcd128c6d2aabecda07c110361ba2
Stop
c3ade1984ff9031d528776a359b03e496cecb26c332bd826465eef2da60f41b1
Stop
da7263588f95278e91f5ddb2898d18735d6c6abfa1e872d1358aafa4e044adca
Stop
e5a536df45ce59beb16c30352f72f0d84af2f478b3fb1e090ff53741f946dfdc
Stop
+ 556 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/210908-k3xamahdbk/
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:
318b3878501bc3fe6abb68d943779716a558a30998aa252b6d7773f952947bc9
MD5 hash:
56384e2f613dd565bc783c215e7f20ba
SHA1 hash:
aa1bf8ad309f1721222dc1c8bf700f69040ea876
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/4583e361-0a81-472e-8bbf-7471cab7e426/
Parent samples :
d36c662c5b89a27132d06871d9d7d1f397769a4642a6ae6fab860c4bcce0ee41
aa1af1f3b5f18d87340a9af9d253e296982e4fb1b11d88c7151c81cae86689c5
4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b
d261b4772345ed33f9e1d0795f312ab317d55ac1ff83cf226990c42941d7c094
SH256 hash:
4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b
MD5 hash:
96a2cd02114c907895a0482b67433536
SHA1 hash:
0a66bab36b786b670b669240e658509eb8dba49f
Link:
https://www.unpac.me/results/4583e361-0a81-472e-8bbf-7471cab7e426/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4bf131758e42/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/4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b

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:MALWARE_Win_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
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:win_stop_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stop.

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/186278/

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