MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea. 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: 19


Intelligence 19 IOCs YARA 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea
SHA3-384 hash: 937022a3bc638efab45af59220abb416081894510253ca37a1e4b7e27400e70187f89664e78b5821031e2d0f787671d7
SHA1 hash: 06e244357713bc8a5626f1a72cdfbeb14023c046
MD5 hash: e65243a811b7abc9848c3c15f5f6888e
humanhash: fruit-hotel-kitten-eight
File name:MT103-4477-aking-EFTA0001630-00050.exe
Download: download sample
Signature a310Logger
Create hunting rule
File size:1'043'968 bytes
First seen:2025-08-02 12:03:44 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 24576:o+UlGvLJN5pd3yw2LBbUJdC8wb/ZhlNkTN:phhTyVUJIBbzQ
Threatray 101 similar samples on MalwareBazaar
TLSH T1F525F14EF725BA66CA6D0FF68403614492D08877E677F2AB88C52CD3193DFC4994EA43
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10522/11/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
Magika pebin
dhash icon d8d8dadad9d999d8 (8 x Formbook, 4 x AgentTesla, 3 x SnakeKeylogger)
Reporter cocaman
Tags:a310logger exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
33
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MT103-4477-aking-EFTA0001630-00050.PDF.z
Verdict:
Malicious activity
Analysis date:
2025-08-02 12:04:11 UTC
Tags:
arch-exec auto-sch-xml ims-api generic darkcloud upx
Link:
https://app.any.run/tasks/556459fd-5bb9-40e4-a078-11a8f9536460

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/18440/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=688dfecaaf3050dc8d337a47
Tags:
micro spawn shell
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Searching for the window
Searching for synchronization primitives
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/688dfecb73b8ef6f4afb2bf4/reports/09de001c-c531-4467-92b1-cfeb278e4148/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea
Malware family:
DarkCloud
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/307e2721-9a2c-4b4b-ac7f-43120c8bb66a
Result
Threat name:
DarkCloud
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
82 / 100
Link:
https://www.joesandbox.com/analysis/1749042
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected DarkCloud
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1749042 Sample: MT103-4477-aking-EFTA000163... Startdate: 02/08/2025 Architecture: WINDOWS Score: 82 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Antivirus / Scanner detection for submitted sample 2->64 66 9 other signatures 2->66 7 MT103-4477-aking-EFTA0001630-00050.exe 7 2->7         started        11 dGGYWvm.exe 5 2->11         started        13 OUTLOOK.EXE 2->13         started        15 OUTLOOK.EXE 2->15         started        process3 file4 44 C:\Users\user\AppData\Roaming\dGGYWvm.exe, PE32 7->44 dropped 46 C:\Users\user\...\dGGYWvm.exe:Zone.Identifier, ASCII 7->46 dropped 48 C:\Users\user\AppData\Local\...\tmpBBB7.tmp, XML 7->48 dropped 50 MT103-4477-aking-E...01630-00050.exe.log, ASCII 7->50 dropped 68 Uses schtasks.exe or at.exe to add and modify task schedules 7->68 70 Adds a directory exclusion to Windows Defender 7->70 72 Injects a PE file into a foreign processes 7->72 17 MT103-4477-aking-EFTA0001630-00050.exe 4 7->17         started        20 powershell.exe 23 7->20         started        22 powershell.exe 23 7->22         started        24 schtasks.exe 1 7->24         started        74 Antivirus detection for dropped file 11->74 76 Multi AV Scanner detection for dropped file 11->76 26 dGGYWvm.exe 11->26         started        28 schtasks.exe 1 11->28         started        30 dGGYWvm.exe 11->30         started        32 dGGYWvm.exe 11->32         started        signatures5 process6 signatures7 52 Loading BitLocker PowerShell Module 20->52 34 conhost.exe 20->34         started        36 WmiPrvSE.exe 20->36         started        38 conhost.exe 22->38         started        40 conhost.exe 24->40         started        54 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->54 56 Tries to steal Mail credentials (via file / registry access) 26->56 58 Tries to harvest and steal browser information (history, passwords, etc) 26->58 42 conhost.exe 28->42         started        process8
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable PE (Portable Executable) SOS: 0.41 Win 32 Exe x86
Link:
https://app.malva.re/file/e65243a811b7abc9848c3c15f5f6888e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea/
Verdict:
Malicious
Threat:
Family.DARKCLOUD
Link:
https://tip.neiki.dev/file/c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea
Threat name:
Win32.Trojan.Nekark
Create hunting rule
Status:
Malicious
First seen:
2025-08-01 00:24:44 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ygf4cfsbcmnylyooexhs6pbfvrmjlqupvakihthrx6m6a26dj3va._file
Verdict:
malicious
Label(s):
darkcloudstealer
Create hunting rule
unc_loader_037
Create hunting rule
Similar samples:
142a7242e18f3d827d84908b9dc9bec3ed7c5de36e5c73e0954b5058ec44490c
a310Logger
ad35c23788b2e0f57f4a57326290de01f0680c567122ff11fa0eefe5443e522e
a310Logger
c6cd12aefb61eadf7e46c05de445a63dd5ab74d46b28495f3136c64c93513e0c
a310Logger
f8bb9aecb12614029fc43d6866dafd4de9a703887da83b8efb4bd8a1aac8c2ff
a310Logger
+ 91 additional samples on MalwareBazaar
Result
Malware family:
darkcloud
Create hunting rule
Score:
  10/10
Tags:
family:darkcloud discovery execution persistence spyware stealer
Link:
https://tria.ge/reports/250802-n8rtwaztcx/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Reads WinSCP keys stored on the system
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
DarkCloud
Darkcloud family
Malware Config
C2 Extraction:
https://api.telegram.org/bot7571965885:AAEtSAMfUyYSBTkdeYMi4HkPgW1Du_Ztdds/sendMessage?chat_id=7729144640
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/a28a7288-2e77-47f3-ba5c-9e9243209984
Unpacked files
SH256 hash:
c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea
MD5 hash:
e65243a811b7abc9848c3c15f5f6888e
SHA1 hash:
06e244357713bc8a5626f1a72cdfbeb14023c046
Link:
https://www.unpac.me/results/ecdd751a-33fe-44bb-8a0e-28fb7f1edafb/
SH256 hash:
47f61c89ac7f26137294c8769b5830eb4e3c46c49fb2faae27c3a0ec8dea237a
MD5 hash:
c6e3c4a6fa98d0d98aebf8bbb985683c
SHA1 hash:
6675886087cafe679c795e83d02647ddefb2b98e
Link:
https://www.unpac.me/results/ecdd751a-33fe-44bb-8a0e-28fb7f1edafb/
SH256 hash:
c273b44721f9b8b965b66ad662f1a9a2cf54bd8a32685d433e44d67302688e5a
MD5 hash:
7de738010cf75727cbc207b7b4998125
SHA1 hash:
cbc0889a7a5575b0ee8c10e90344bfcacc4c3033
Detections:
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/ecdd751a-33fe-44bb-8a0e-28fb7f1edafb/
Parent samples :
c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea
cf03bf093e10d5846c02b4bbb67c8d22db52ef760a5ed038bdeb3633ede1c8fb
SH256 hash:
390eaa8b6dcddb41f60bce20cfa6825b798b844bb39dd6552853d8de0cfc1b07
MD5 hash:
b89e3ff6f60dce656e62f32fcf4b002f
SHA1 hash:
f1e24e039f96e5ab8af6499cd3efeb99a88bc58c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/ecdd751a-33fe-44bb-8a0e-28fb7f1edafb/
SH256 hash:
3b75425895af4ae3186b36277553641e37ca1d620ae18d68e40d13351b54de6a
MD5 hash:
94d1531b52774dce52a89e33646d5b1d
SHA1 hash:
29bf887b025b97bd7a9e1e261852ba824234a625
Link:
https://www.unpac.me/results/ecdd751a-33fe-44bb-8a0e-28fb7f1edafb/
Malware family:
DarkCloud
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c18bc1164113/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/c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea

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: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: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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
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:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Create hunting rule
Author:malware-lu
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.

Malspam

a310Logger

z c03d3c01670f024dfa41af506a98140e54ffb430d609f6646f37e36d6300b2eb

a310Logger

Executable exe c18bc11641131b85e1ce25cf2f3c25ac5895c28fa81483ccf1bf99e06bc34eea

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 c03d3c01670f024dfa41af506a98140e54ffb430d609f6646f37e36d6300b2eb
Cape
Cape
https://www.capesandbox.com/analysis/18440/
  
Dropped by
MD5 7429c9e54f653b4a181cb44e6bd184d4

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 (GUARD_CF)high

Comments