MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4. 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


CryptBot


Vendor detections: 11


Intelligence 11 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4
SHA3-384 hash: 79e85fd9b57e6a89daf12a8ca9c0659691efc1238ee9ac315f452bc5ba441766d1bbd98b85f21e5a8f2747d6e30229fb
SHA1 hash: d70e7d1b90d5c6117ec2dd05e611ac1299c2dc00
MD5 hash: 44ab04adcd28ea330172ba9d008ae52b
humanhash: triple-yankee-cardinal-zulu
File name:file
Download: download sample
Signature CryptBot
Create hunting rule
File size:4'496'384 bytes
First seen:2024-12-03 17:38:19 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2eabe9054cad5152567f0699947a2c5b (2'852 x LummaStealer, 1'312 x Stealc, 1'026 x Healer)
ssdeep 98304:u79KGoii1VtAGtLsErzsM8Dy8RHIzX+p/jgpNjHqvWYfpwuQViKosz:u79KOi7ZtL1rzsrO8hIzupSN9ksViKj
TLSH T12E2633A3131647ACF75DF8BD8A62AB133C037259E9B3A51B67874F9C192BE44624133C
TrID 27.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
20.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.5% (.EXE) Win32 Executable (generic) (4504/4/1)
8.4% (.ICL) Windows Icons Library (generic) (2059/9)
8.3% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter Bitsight
Tags:CryptBot exe


Avatar
Bitsight
url: http://31.41.244.11/files/martin/random.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
430
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-12-03 17:41:57 UTC
Tags:
themida antivm stealer cryptbot crypto-regex
Link:
https://app.any.run/tasks/b5f10b06-75a4-433f-aecf-3aca63e9e342

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.23340.8404.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
84.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=674f431bbc8c6beb3075672e
Tags:
malware
Result
Verdict:
Clean
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for analyzing tools
Searching for the window
DNS request
Connection attempt
Sending a custom TCP request
Creating a window
Sending an HTTP POST request
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
crypto packed packed packer_detected
Link:
https://www.filescan.io/uploads/674f423b44b67042f0d33184/reports/8a06c4f0-599b-4702-bea9-32827f73ff28/overview
Verdict:
Malicious
Labled as:
Zusy.Generic
Link:
https://www.hybrid-analysis.com/sample/8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/46f32af7-31b0-4378-bd34-409a163b0fd6
Result
Threat name:
Clipboard Hijacker, Cryptbot
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1567680
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Attempt to bypass Chrome Application-Bound Encryption
Drops large PE files
Found evasive API chain (may stop execution after checking mutex)
Found stalling execution ending in API Sleep call
Hides threads from debuggers
Leaks process information
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Sigma detected: Suspicious Scheduled Task Creation Involving Temp Folder
Suricata IDS alerts for network traffic
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Tries to detect sandboxes / dynamic malware analysis system (registry check)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to detect virtualization through RDTSC time measurements
Tries to evade debugger and weak emulator (self modifying code)
Tries to harvest and steal browser information (history, passwords, etc)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Clipboard Hijacker
Yara detected Cryptbot
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1567680 Sample: file.exe Startdate: 03/12/2024 Architecture: WINDOWS Score: 100 50 Suricata IDS alerts for network traffic 2->50 52 Antivirus / Scanner detection for submitted sample 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 7 other signatures 2->56 7 file.exe 5 3 2->7         started        12 service123.exe 2->12         started        14 service123.exe 2->14         started        16 2 other processes 2->16 process3 dnsIp4 40 home.fvtekx5vs.top 34.17.28.197, 49731, 49732, 49739 ATGS-MMD-ASUS United States 7->40 42 httpbin.org 18.213.123.165, 443, 49730 AMAZON-AESUS United States 7->42 44 2 other IPs or domains 7->44 36 C:\Users\user\AppData\...\service123.exe, PE32 7->36 dropped 38 C:\Users\user\...\ZZmnHrfutuBRZqgRbrVC.dll, PE32 7->38 dropped 62 Attempt to bypass Chrome Application-Bound Encryption 7->62 64 Tries to detect sandboxes and other dynamic analysis tools (window names) 7->64 66 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->66 68 8 other signatures 7->68 18 service123.exe 7->18         started        21 WerFault.exe 21 16 7->21         started        24 chrome.exe 7->24         started        27 schtasks.exe 1 7->27         started        file5 signatures6 process7 dnsIp8 58 Found evasive API chain (may stop execution after checking mutex) 18->58 60 Found stalling execution ending in API Sleep call 18->60 34 C:\ProgramData\Microsoft\...\Report.wer, Unicode 21->34 dropped 46 239.255.255.250 unknown Reserved 24->46 29 chrome.exe 24->29         started        32 conhost.exe 27->32         started        file9 signatures10 process11 dnsIp12 48 www.google.com 142.250.181.100, 443, 49747 GOOGLEUS United States 29->48
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4/
Threat name:
Win32.Trojan.CryptBot
Create hunting rule
Status:
Malicious
First seen:
2024-12-03 17:39:04 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
22 of 24 (91.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r2ur44y6b7hhj6zi5wqvircqenwtbhgotfhhxa7uytpnabvw2wsa._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery evasion
Link:
https://tria.ge/reports/241203-v79rmawkbx/
Behaviour
Suspicious behavior: EnumeratesProcesses
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks installed software on the system
Checks BIOS information in registry
Identifies Wine through registry keys
Enumerates VirtualBox registry keys
Identifies VirtualBox via ACPI registry values (likely anti-VM)
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/eb4adef7-1414-4b1d-9457-7e19d1bec724
Unpacked files
SH256 hash:
e6396f2c901f6ab2e66d0cc049ae50aa1675ec24b144a3e28328aed28f5c880c
MD5 hash:
0bd6ff28eaf0641e7acd0423a66570f8
SHA1 hash:
b4803f877fce977d57bba2e8a0796adf8920ea2b
Link:
https://www.unpac.me/results/da463e9d-d41d-4f77-a491-e5a9dc76dd3e/
SH256 hash:
8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4
MD5 hash:
44ab04adcd28ea330172ba9d008ae52b
SHA1 hash:
d70e7d1b90d5c6117ec2dd05e611ac1299c2dc00
Link:
https://www.unpac.me/results/da463e9d-d41d-4f77-a491-e5a9dc76dd3e/
Malware family:
CryptBot.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8ea91e731e0f/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/8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4

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:pe_detect_tls_callbacks
Create hunting rule
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Web download

CryptBot

Executable exe 8ea91e731e0fce74fb28eda1544450236d309cce994e7b83f4c4ded006b6d5a4

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3310377/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical

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