MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc. 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: 12


Intelligence 12 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc
SHA3-384 hash: f11c487692d4e54122df8f3fe0b733399a76717c04688fee1a568a14128d231d3c2665d14d25cf26c6b69190009b2769
SHA1 hash: f272d7519e728efe636f85126fed21d541125d11
MD5 hash: ccfe9bcb47d17daa52ad54c47bcd5385
humanhash: august-sierra-ink-angel
File name:file
Download: download sample
Signature CryptBot
Create hunting rule
File size:4'400'128 bytes
First seen:2024-11-24 15:32:18 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:yNJ84SqRAA7rrA+83TM2lfTiP0PSvB1f6EXsg/50dY:QJ84SqRzrrAz3TM2JmBMEXsg/M
TLSH T1511633BFFC7D327CC523AB7607FF3C91E515986E62842839027676A20964707B179328
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/random.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
396
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-11-24 15:33:49 UTC
Tags:
stealer cryptbot themida
Link:
https://app.any.run/tasks/77031aca-c491-4551-83fa-2ab5eef3a33e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.17595.23509.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67434730b31374f098340cd9
Tags:
vmdetect autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Searching for analyzing tools
Connection attempt to an infection source
DNS request
Creating a window
Connection attempt
Query of malicious DNS domain
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-vm crypto packed packed packer_detected
Link:
https://www.filescan.io/uploads/67434730426b648292f3cf19/reports/b31f59cd-e052-470b-be31-f5b84a56f345/overview
Verdict:
Malicious
Labled as:
Zusy.Generic
Link:
https://www.hybrid-analysis.com/sample/b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/02928412-3331-416c-b0fc-1b7ad4817da0
Result
Threat name:
Clipboard Hijacker, Cryptbot
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1561879
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
Machine Learning detection for sample
Multi AV Scanner detection for dropped 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 (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: 1561879 Sample: file.exe Startdate: 24/11/2024 Architecture: WINDOWS Score: 100 50 Suricata IDS alerts for network traffic 2->50 52 Antivirus / Scanner detection for submitted sample 2->52 54 Yara detected Clipboard Hijacker 2->54 56 5 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 fvtekk5pn.top 34.116.198.130, 49704, 49729, 49739 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG United States 7->40 42 127.0.0.1 unknown unknown 7->42 44 home.fvtekk5pn.top 7->44 36 C:\Users\user\...\unmYCIPOHmXNjqOesrEy.dll, PE32 7->36 dropped 38 C:\Users\user\AppData\...\service123.exe, PE32 7->38 dropped 64 Attempt to bypass Chrome Application-Bound Encryption 7->64 66 Tries to detect sandboxes and other dynamic analysis tools (window names) 7->66 68 Uses schtasks.exe or at.exe to add and modify task schedules 7->68 70 7 other signatures 7->70 18 service123.exe 7->18         started        21 WerFault.exe 19 16 7->21         started        24 chrome.exe 7->24         started        27 schtasks.exe 1 7->27         started        file5 signatures6 process7 dnsIp8 58 Multi AV Scanner detection for dropped file 18->58 60 Found evasive API chain (may stop execution after checking mutex) 18->60 62 Found stalling execution ending in API Sleep call 18->62 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, 49754, 49755 GOOGLEUS United States 29->48
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc/
Threat name:
Win32.Trojan.CryptBot
Create hunting rule
Status:
Malicious
First seen:
2024-11-24 15:33:05 UTC
File Type:
PE (Exe)
AV detection:
29 of 38 (76.32%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wtidrolhknv3paitq2fqqgpfvzr5di7vg3mknsiazsapdrkbyd6a._file
Result
Malware family:
cryptbot
Create hunting rule
Score:
  10/10
Tags:
family:cryptbot credential_access discovery evasion spyware stealer
Link:
https://tria.ge/reports/241124-sy6x9swmbs/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Browser Information Discovery
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Suspicious use of NtSetInformationThreadHideFromDebugger
Checks installed software on the system
Checks BIOS information in registry
Checks computer location settings
Executes dropped EXE
Identifies Wine through registry keys
Loads dropped DLL
Reads user/profile data of web browsers
Uses browser remote debugging
Identifies VirtualBox via ACPI registry values (likely anti-VM)
CryptBot
Cryptbot family
Detects CryptBot payload
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2e37746a-8a4d-43c5-b86f-c6729a3da105
Unpacked files
SH256 hash:
206529118d727f091e2e7d4ddc207587d7e8c1bc37a36202f13733eab9091fae
MD5 hash:
f7cfeda36a832eb38e74fa3bc8adf810
SHA1 hash:
d65485912350dc865d5f126c9c89c8c962c7814c
Link:
https://www.unpac.me/results/60e9be80-cbf3-45d7-9c20-16c2ac00aa9b/
SH256 hash:
b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc
MD5 hash:
ccfe9bcb47d17daa52ad54c47bcd5385
SHA1 hash:
f272d7519e728efe636f85126fed21d541125d11
Link:
https://www.unpac.me/results/60e9be80-cbf3-45d7-9c20-16c2ac00aa9b/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4d038b96753/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/b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc

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)
Rule name:vmdetect
Create hunting rule
Author:nex
Description:Possibly employs anti-virtualization techniques

File information

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

Web download

CryptBot

Executable exe b4d038b967536bb78113868b0819e5ae63d1a3f536d8a6c900cc80f1c541c0fc

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3253370/

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

Comments