MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b. 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


a310Logger


Vendor detections: 16


Intelligence 16 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b
SHA3-384 hash: 25b75067df7d2bebeae8a31e20afae41545a1f4850517f24c493b841d57825553188c50f38a976a1e3d40b67bd6260e7
SHA1 hash: abd25cb4d433422d4f0f02500905d28a2096de00
MD5 hash: 74b77378bdc023622ebf5453534045b4
humanhash: beryllium-india-october-johnny
File name:Bvto94cdlctr.exe
Download: download sample
Signature a310Logger
Create hunting rule
File size:1'181'696 bytes
First seen:2025-09-12 09:10:56 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1895460fffad9475fda0c84755ecfee1 (308 x Formbook, 52 x AgentTesla, 36 x SnakeKeylogger)
ssdeep 24576:s5EmXFtKaL4/oFe5T9yyXYfP1ijXday5Em7CG0:sPVt/LZeJbInQRayG
TLSH T11045BF0273C1C066FFAB92334B5AF6115BBC79260123A61F13981D7AFA705B1563E7A3
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter skocherhan
Tags:178-16-53-79 a310logger exe


Avatar
skocherhan
http://178.16.53.79/Bvto94cdlctr.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
86
Origin country :
GB GB
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Bvto94cdlctr.exe
Verdict:
No threats detected
Analysis date:
2025-09-12 09:13:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/00dff294-2822-4beb-8843-b9390b077b99

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
A310Logger
Create hunting rule
Link:
https://www.capesandbox.com/analysis/27112/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68c3e3b5b2005259887a082f
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit compiled-script evasive fingerprint fingerprint keylogger microsoft_visual_cc packed
Link:
https://www.filescan.io/uploads/68c3e3c9b29d966a312b7904/reports/b2a3f5db-8580-4990-9fde-276b6556c740/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-05T00:56:00Z UTC
Last seen:
2025-09-05T00:56:00Z UTC
Hits:
~100
Link:
https://opentip.kaspersky.com/75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9665a39d-057e-4d97-b4e4-c6731a08b36c
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b
Verdict:
Malware
YARA:
7 match(es)
Tags:
AutoIt Decompiled Executable PDB Path PE (Portable Executable) PE File Layout Suspect Win 32 Exe x86
Link:
https://app.malva.re/file/74b77378bdc023622ebf5453534045b4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-09-05 06:16:01 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=oxb3mhkise2okkk23522udfwvjx5i6ouclqcgztbkpdvx2u6vinq._file
Verdict:
malicious
Label(s):
darkcloudstealer
Create hunting rule
Similar samples:
error
a310Logger
Result
Malware family:
darkcloud
Create hunting rule
Score:
  10/10
Tags:
family:darkcloud discovery stealer
Link:
https://tria.ge/reports/250912-k5rsxsdk8v/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
DarkCloud
Darkcloud family
Malware Config
C2 Extraction:
https://api.telegram.org/bot8118931032:AAEFmB674oN9yaxY2_0cnQrxsU61rQLXUM8/sendMessage?chat_id=1345746651
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/33b4599a-e30a-49c3-8354-e5d63655cde6
Unpacked files
SH256 hash:
75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b
MD5 hash:
74b77378bdc023622ebf5453534045b4
SHA1 hash:
abd25cb4d433422d4f0f02500905d28a2096de00
Link:
https://www.unpac.me/results/4c203c54-e5ec-4410-bf8e-26f28791f228/
SH256 hash:
ac9ebcc8bad9d1f11cd2f089a1c9e558f336b5ed87f5176c8222c827d31c27ef
MD5 hash:
9c8df0b85ff56c74637e426b7952ecad
SHA1 hash:
478aab30a9b55bef1831d7397950086cb79c7d6d
Detections:
darkcloudstealer
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
MALWARE_Win_A310Logger
Create hunting rule
MALWARE_Win_DarkCloud
Create hunting rule
Link:
https://www.unpac.me/results/4c203c54-e5ec-4410-bf8e-26f28791f228/
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/75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
Rule name:CP_Script_Inject_Detector
Create hunting rule
Author:DiegoAnalytics
Description:Detects attempts to inject code into another process across PE, ELF, Mach-O binaries
Rule name:darkcloud_stealer
Create hunting rule
Author:Michelle Khalil
Description:This rule detects unpacked darkcloud malware samples.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:FreddyBearDropper
Create hunting rule
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_CC_Regex
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Create hunting rule
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:MALWARE_Win_A310Logger
Create hunting rule
Author:ditekSHen
Description:Detects A310Logger
Rule name:MALWARE_Win_DarkCloud
Create hunting rule
Author:ditekSHen
Description:Detects DarkCloud infostealer
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:ProtectSharewareV11eCompservCMS
Create hunting rule
Author:malware-lu
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vba
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:Windows_Trojan_DarkCloud_9905abce
Create hunting rule
Author:Elastic Security

File information

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

Excel file xlsx 0d1be7807b7ac9f58edab01c9fb6582db5c5e1c19a2c33b8d7c61a70c14642c2

a310Logger

Executable exe 75c3b61d489134e5295adf75aa0cb6aa6fd479d412e023666153c75bea9eaa1b

(this sample)

  
Dropped by
MD5 e9c3664186aa0e9762be519224d79d30
Cape
Cape
https://www.capesandbox.com/analysis/27112/

Comments