MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8cf62116e2033f4236222c9d98c26051ced7bc1bd60114c17922c4577c762de. 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: 17


Intelligence 17 IOCs YARA 22 File information Comments

SHA256 hash: a8cf62116e2033f4236222c9d98c26051ced7bc1bd60114c17922c4577c762de
SHA3-384 hash: 68ce2e37bdaf4fa9d383217210d2d94c17630756ad2fb7e168bb2ffdbeeaa1a1f932cb03425d02434ba81747fe8399fa
SHA1 hash: 49640dabc43275f2c65cd4d269dcb1f264057afb
MD5 hash: acce1a436bb02943599e545e840d76d6
humanhash: nitrogen-tennis-snake-timing
File name:Your_Leave_Mid Year_Till _December 2025.exe
Download: download sample
Signature a310Logger
File size:1'182'720 bytes
First seen:2025-07-25 08:06:53 UTC
Last seen:2025-08-12 14:32:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'636 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 24576:x1Ak0Mv87dJy9+7GBrtGOihD4Qlg50rt5lV9u1e2OLNKX8:x1xWdJyk7G7pihjLBD3u1GpKX
Threatray 2'648 similar samples on MalwareBazaar
TLSH T13145338EB38C9551E1F199B685071410DAE1E7C540BACFBEE28A73B67C63F298C2564C
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter threatcat_ch
Tags:a310logger exe

Intelligence


File Origin
# of uploads :
2
# of downloads :
33
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Your_Leave_Mid Year_Till _December 2025.exe
Verdict:
Malicious activity
Analysis date:
2025-07-25 08:09:41 UTC
Tags:
auto-startup

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
90.9%
Tags:
autorun spawn virus
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
base64 net_reactor obfuscated packed packed
Result
Threat name:
DarkCloud, ResolverRAT
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Drops VBS files to the startup folder
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected DarkCloud
Yara detected Generic Dropper
Yara detected ResolverRAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable PE (Portable Executable) SOS: 0.93 Win 32 Exe x86
Threat name:
ByteCode-MSIL.Backdoor.Androm
Status:
Malicious
First seen:
2025-07-25 03:24:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
23 of 35 (65.71%)
Threat level:
  5/5
Result
Malware family:
darkcloud
Score:
  10/10
Tags:
family:darkcloud discovery stealer
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
DarkCloud
Darkcloud family
Malware Config
C2 Extraction:
https://api.telegram.org/bot8470624769:AAHCEvsJsd95yY0arpZjiMvgrZI0MgAM_g0/sendMessage?chat_id=6712961026
Unpacked files
SH256 hash:
a8cf62116e2033f4236222c9d98c26051ced7bc1bd60114c17922c4577c762de
MD5 hash:
acce1a436bb02943599e545e840d76d6
SHA1 hash:
49640dabc43275f2c65cd4d269dcb1f264057afb
SH256 hash:
7c174deb0de906b3e88222991b0f5b63f01977d891f4234b5bd0916dc84ba1eb
MD5 hash:
cae76aff991d98fe3d89b12d599eface
SHA1 hash:
ac840c231235985a34634b2af29e210f4521b6e6
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
Rule name:FreddyBearDropper
Author:Dwarozh Hoshiar
Description:Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_CC_Regex
Author:ditekSHen
Description:Detects executables referencing credit card regular expressions
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
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
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore
Author:ditekSHen
Description:Detects executables containing SQL queries to confidential data stores. Observed in infostealers
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:MALWARE_Win_A310Logger
Author:ditekSHen
Description:Detects A310Logger
Rule name:MALWARE_Win_DarkCloud
Author:ditekSHen
Description:Detects DarkCloud infostealer
Rule name:NET
Author:malware-lu
Rule name:pe_imphash
Rule name:ProtectSharewareV11eCompservCMS
Author:malware-lu
Rule name:RIPEMD160_Constants
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vba
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:telegram_bot_api
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:UPXV200V290MarkusOberhumerLaszloMolnarJohnReiser
Author:malware-lu
Rule name:Windows_Trojan_DarkCloud_9905abce
Author:Elastic Security

File information


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

Malspam

a310Logger

Executable exe a8cf62116e2033f4236222c9d98c26051ced7bc1bd60114c17922c4577c762de

(this sample)

  
Delivery method
Distributed via e-mail attachment

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