MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e
SHA3-384 hash: 9c98fdb9ccca4c93e47f43b5fa406fae6d480cce983bd4d805268e465a797bd51b927a0170d90bda773f135d83928fe8
SHA1 hash: 80d43c8d058765bead0e34d75b95964572914657
MD5 hash: 17a63eaeb8e2e44f69121ae66f9e8307
humanhash: coffee-single-zebra-football
File name:file
Download: download sample
Signature CryptBot
Create hunting rule
File size:4'447'232 bytes
First seen:2024-11-28 22:02:21 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 98304:2oskw3esnG86c2nrGLW5HnQHlC+Hvph0vf/GToRJGy7c+9m35lI4:rOusnGrNnrGLW5HQFCOeeoRJGy7J9S51
TLSH T12F26339B5C7EBB12C48024BDE89F25DEDD32450AD16932316D0BB661D92237BEB1EF04
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 :
468
Origin country :
US US
Vendor Threat Intelligence
Malware family:
systembc
Create hunting rule
ID:
1
File name:
New Text Document.exe
Verdict:
Malicious activity
Analysis date:
2024-11-28 21:41:27 UTC
Tags:
lumma stealer hausbomber loader botnet systembc proxy opendir github dcrat cryptbot telegram rat asyncrat remote miner evasion discord exfiltration arch-doc xworm
Link:
https://app.any.run/tasks/2c07d521-4ec5-409d-aece-167876fe82cb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Variant.Zusy.568294.11017.6789.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6748e9cee64d1c722d79dbe2
Tags:
vmdetect phishing
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Searching for analyzing tools
DNS request
Connection attempt
Sending a custom TCP request
Creating a window
Sending an HTTP POST request
Sending an HTTP GET request
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/775748ec-b717-417e-8a14-e378dee42433
Result
Threat name:
Clipboard Hijacker, Cryptbot
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1564880
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: 1564880 Sample: file.exe Startdate: 28/11/2024 Architecture: WINDOWS Score: 100 43 Suricata IDS alerts for network traffic 2->43 45 Antivirus / Scanner detection for submitted sample 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 7 other signatures 2->49 7 file.exe 5 3 2->7         started        12 service123.exe 2->12         started        process3 dnsIp4 35 home.fvtekx5pt.top 34.105.155.9, 49705, 49706, 49736 GOOGLEUS United States 7->35 37 httpbin.org 18.213.123.165, 443, 49704 AMAZON-AESUS United States 7->37 39 2 other IPs or domains 7->39 29 C:\Users\user\AppData\...\service123.exe, PE32 7->29 dropped 31 C:\Users\user\...\rnCMinwLHbrEjcomyVjl.dll, PE32 7->31 dropped 51 Attempt to bypass Chrome Application-Bound Encryption 7->51 53 Tries to detect sandboxes and other dynamic analysis tools (window names) 7->53 55 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->55 57 8 other signatures 7->57 14 service123.exe 7->14         started        17 chrome.exe 7->17         started        20 schtasks.exe 1 7->20         started        22 WerFault.exe 19 12 7->22         started        file5 signatures6 process7 dnsIp8 59 Found evasive API chain (may stop execution after checking mutex) 14->59 61 Found stalling execution ending in API Sleep call 14->61 33 239.255.255.250 unknown Reserved 17->33 24 chrome.exe 17->24         started        27 conhost.exe 20->27         started        signatures9 process10 dnsIp11 41 www.google.com 142.250.181.68, 443, 49760, 49761 GOOGLEUS United States 24->41
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e/
Threat name:
Win32.Trojan.Amadey
Create hunting rule
Status:
Malicious
First seen:
2024-11-28 22:03:08 UTC
File Type:
PE (Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ghulr3vv6cbw5sw5cas2kofj2dwyv2kpynniqlwfeixt2zgjjvpa._file
Result
Malware family:
n/a
Score:
  9/10
Tags:
discovery evasion
Link:
https://tria.ge/reports/241128-1yb2wsslhs/
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:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d3997139-0d7f-48df-b4c8-4ccf331355c3
Unpacked files
SH256 hash:
e847bb02e05332793d688918c52e2c8af2e9a9c8c630dba26e4e9f25d2e855d6
MD5 hash:
186d1d0c36519cb0bc28f5d42962c89f
SHA1 hash:
e7459a9edcfa19f8b6d2632460bea3c1a4c73c53
Link:
https://www.unpac.me/results/241e758f-6119-4610-8f75-cc835a100e68/
SH256 hash:
31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e
MD5 hash:
17a63eaeb8e2e44f69121ae66f9e8307
SHA1 hash:
80d43c8d058765bead0e34d75b95964572914657
Link:
https://www.unpac.me/results/241e758f-6119-4610-8f75-cc835a100e68/
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/31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e

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 31e8b8eeb5f0836ecadd1025a538a9d0ed8ae94fc35a882ec5222f3d64c94d5e

(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

Comments