MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a4ba0934936df0b796b0c03690609b6596ccda0f434b59d5faea600157bc85f. 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: 10


Intelligence 10 IOCs 1 YARA 2 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a4ba0934936df0b796b0c03690609b6596ccda0f434b59d5faea600157bc85f
SHA3-384 hash: a2f0d49ee8ccc9a48c3b822bbbb3d43e98819c129362c3747bd8e533dc42cfff383483ae65e1e14b26fb697cea970c39
SHA1 hash: 56d69a0f7c52f5f000a581180d23f6eb799915fc
MD5 hash: 229bc019bf32a2f8e5451f11fa9eedff
humanhash: network-sodium-pizza-pennsylvania
File name:229bc019bf32a2f8e5451f11fa9eedff.exe
Download: download sample
Signature Stop
Create hunting rule
File size:862'720 bytes
First seen:2021-05-22 15:55:14 UTC
Last seen:2021-05-22 16:01:43 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7ea247bca7cc4e121359ca692153ed34 (1 x Stop)
ssdeep 24576:kqRcDGlh92d+NcIZATVwwN1WADhvBgeXsL:8uhkFb51NgeX
Threatray 108 similar samples on MalwareBazaar
TLSH 1305F13076A0C03CF4BF61B449B96278A53A7DA2673490FF22D13AEA69345E56D3074F
Reporter abuse_ch
Tags:exe Stop


Avatar
abuse_ch
Stop C2:
http://45.67.231.132/

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://45.67.231.132/ https://threatfox.abuse.ch/ioc/57108/

Intelligence

File Origin
# of uploads :
2
# of downloads :
148
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
229bc019bf32a2f8e5451f11fa9eedff.exe
Verdict:
Suspicious activity
Analysis date:
2021-05-22 16:06:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/cd6dea35-6aae-4330-b19e-704de3438daa

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Ransomware.Tofsee-9864002-0
Create hunting rule

Win.Ransomware.Tofsee-9864003-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
DNS request
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
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
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.
Result
Threat name:
Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/788706
Signature
Antivirus detection for URL or domain
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found ransom note / readme
Injects a PE file into a foreign processes
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
Modifies the hosts file
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Mutes Antivirus updates and installments via hosts file black listing
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 steal Mail credentials (via file access)
Writes many files with high entropy
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 421102 Sample: 5D8CZrlaBy.exe Startdate: 22/05/2021 Architecture: WINDOWS Score: 100 100 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->100 102 Multi AV Scanner detection for domain / URL 2->102 104 Antivirus detection for URL or domain 2->104 106 5 other signatures 2->106 12 5D8CZrlaBy.exe 2->12         started        15 5D8CZrlaBy.exe 2->15         started        17 5D8CZrlaBy.exe 2->17         started        19 5D8CZrlaBy.exe 2->19         started        process3 signatures4 122 Detected unpacking (changes PE section rights) 12->122 124 Detected unpacking (overwrites its own PE header) 12->124 126 Contains functionality to inject code into remote processes 12->126 21 5D8CZrlaBy.exe 1 18 12->21         started        128 Writes many files with high entropy 15->128 130 Injects a PE file into a foreign processes 15->130 25 5D8CZrlaBy.exe 15->25         started        27 5D8CZrlaBy.exe 13 17->27         started        29 5D8CZrlaBy.exe 19->29         started        process5 dnsIp6 90 api.2ip.ua 77.123.139.190, 443, 49724, 49728 VOLIA-ASUA Ukraine 21->90 70 C:\Users\user\AppData\...\5D8CZrlaBy.exe, PE32 21->70 dropped 72 C:\Users\...\5D8CZrlaBy.exe:Zone.Identifier, ASCII 21->72 dropped 31 5D8CZrlaBy.exe 21->31         started        34 icacls.exe 21->34         started        92 asvb.top 25->92 74 C:\Users\user\Desktop\5D8CZrlaBy.exe, data 25->74 dropped 94 192.168.2.1 unknown unknown 29->94 file7 process8 signatures9 132 Injects a PE file into a foreign processes 31->132 36 5D8CZrlaBy.exe 1 27 31->36         started        process10 dnsIp11 86 asvb.top 35.235.74.220, 49729, 49730, 49731 GOOGLEUS United States 36->86 88 api.2ip.ua 36->88 62 C:\Users\user\AppData\...\appsglobals.txt, DOS 36->62 dropped 64 C:\Users\user\AppData\...\updatewin2.exe, PE32 36->64 dropped 66 C:\Users\user\AppData\...\updatewin1.exe, PE32 36->66 dropped 68 186 other files (177 malicious) 36->68 dropped 108 Modifies existing user documents (likely ransomware behavior) 36->108 41 5.exe 36->41         started        46 updatewin2.exe 36->46         started        48 updatewin1.exe 2 36->48         started        file12 signatures13 process14 dnsIp15 96 45.67.231.132, 49738, 80 SERVERIUS-ASNL Moldova Republic of 41->96 98 tttttt.me 95.216.186.40, 443, 49737 HETZNER-ASDE Germany 41->98 76 C:\Users\user\AppData\...\pY4zE3fX7h.zip, Zip 41->76 dropped 78 C:\Users\user\AppData\...\OkQI9LMdoix.zip, Zip 41->78 dropped 80 C:\Users\user\AppData\LocalLow\sqlite3.dll, PE32 41->80 dropped 84 58 other files (none is malicious) 41->84 dropped 110 Tries to steal Mail credentials (via file access) 41->110 112 Tries to harvest and steal browser information (history, passwords, etc) 41->112 114 Writes many files with high entropy 41->114 50 cmd.exe 41->50         started        82 C:\Windows\System32\drivers\etc\hosts, ASCII 46->82 dropped 116 Detected unpacking (overwrites its own PE header) 46->116 118 Mutes Antivirus updates and installments via hosts file black listing 46->118 120 Modifies the hosts file 46->120 52 updatewin1.exe 48->52         started        file16 signatures17 process18 process19 54 conhost.exe 50->54         started        56 timeout.exe 50->56         started        58 powershell.exe 52->58         started        process20 60 conhost.exe 58->60         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a4ba0934936df0b796b0c03690609b6596ccda0f434b59d5faea600157bc85f/
Threat name:
Win32.Trojan.Hynamer
Create hunting rule
Status:
Malicious
First seen:
2021-05-21 12:13:26 UTC
AV detection:
20 of 29 (68.97%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jjf2be2jg3pqw6llbqbwsbqjwzmwztna6q2llhk7v2taafl3zbpq._file
Verdict:
malicious
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+ 98 additional samples on MalwareBazaar
Result
Malware family:
raccoon
Create hunting rule
Score:
  10/10
Tags:
family:raccoon botnet:1d76a465540f6a904ac9f1310fe3a3824b5b4549 discovery evasion persistence spyware stealer
Link:
https://tria.ge/reports/210522-kk2vb42dxe/
Behaviour
Delays execution with timeout.exe
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
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 local email clients
Reads user/profile data of web browsers
Disables Task Manager via registry modification
Downloads MZ/PE file
Drops file in Drivers directory
Executes dropped EXE
Deletes Windows Defender Definitions
Raccoon
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/4a4ba0934936df0b796b0c03690609b6596ccda0f434b59d5faea600157bc85f

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

File information

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

Web download

Stop

Executable exe 4a4ba0934936df0b796b0c03690609b6596ccda0f434b59d5faea600157bc85f

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1256494/
  
Delivery method
Distributed via web download

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-22 16:07:51 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0012.001] Anti-Static Analysis::Argument Obfuscation
1) [C0027.009] Cryptography Micro-objective::RC4::Encrypt Data
2) [C0021.004] Cryptography Micro-objective::RC4 PRGA::Generate Pseudo-random Sequence
3) [C0047] File System Micro-objective::Delete File
4) [C0049] File System Micro-objective::Get File Attributes
5) [C0051] File System Micro-objective::Read File
6) [C0052] File System Micro-objective::Writes File
7) [C0033] Operating System Micro-objective::Console
8) [C0040] Process Micro-objective::Allocate Thread Local Storage
9) [C0043] Process Micro-objective::Check Mutex
10) [C0041] Process Micro-objective::Set Thread Local Storage Value
11) [C0018] Process Micro-objective::Terminate Process
12) [C0039] Process Micro-objective::Terminate Thread