MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148. 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: 18

Intelligence 18 IOCs YARA 22 File information Comments

SHA256 hash:	fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148
SHA3-384 hash:	fcedb9954a2367013c225946bb426b90bec3aa8e81d36c67b203ff8965cee1b2f0a8a2b15abb14d08b41d5c303b98427
SHA1 hash:	fd8bc7076922823e3663492dcda60b7fd8754467
MD5 hash:	092bf918dc5bee238d1769b39b138c1c
humanhash:	dakota-robert-three-xray
File name:	Your Leave_For Mid Year_Till _Decembre 2025 PNG.exe
Download:	download sample
Signature	a310Logger Create hunting rule
File size:	1'325'056 bytes
First seen:	2025-07-28 17:35:45 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep	24576:smi6foHrWcr1FQof3mj+z8/FpxY9+US997ZRCk4KsJ:sm/fWdr3bmj+gWo9tC3K0
TLSH	T1D155020BBACA86A3C1696B36C5F6462007B5F981B633D70E3D4713DE5E037BA4941B4B
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 :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

YourLeave_ForMidYear_Till_Decembre2025PNG.exe

Verdict:

Malicious activity

Analysis date:

2025-07-28 15:21:14 UTC

Tags:

auto-startup stealer evasion darkcloud upx

Link:

https://app.any.run/tasks/2dabdda7-0eea-4870-9ddf-f00d5d665089

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

A310Logger

Link:

https://www.capesandbox.com/analysis/17417/

Verdict:

Malicious

Score:

90.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6887b5160b4775fb2132babc

Tags:

autorun virus msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %AppData% directory

Launching a process

Sending a custom TCP request

Enabling autorun by creating a file

Unauthorized injection to a system process

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

base64 hacktool net_reactor obfuscated packed packed

Link:

https://www.filescan.io/uploads/6887b510a16348d835f19983/reports/555c51f4-9e67-4658-b0f9-94df886ede01/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148

Malware family:

DarkCloud

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/cd1b58a8-d8f1-4ccd-b70b-e17a9b24e640

Result

Threat name:

DarkCloud, ResolverRAT

Detection:

malicious

Classification:

troj.spyw.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1745742

Signature

.NET source code contains potential unpacker

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

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 dropped file

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:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148

Verdict:

inconclusive

YARA:

10 match(es)

Tags:

.Net Executable PE (Portable Executable) SOS: 0.36 Win 32 Exe x86

Link:

https://app.malva.re/file/092bf918dc5bee238d1769b39b138c1c

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148/

Verdict:

Malicious

Threat:

VHO:Trojan-PSW.Win32.Stealer

Link:

https://tip.neiki.dev/file/fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148

Threat name:

ByteCode-MSIL.Spyware.AsyncRAT

Status:

Malicious

First seen:

2025-07-28 15:20:46 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

19 of 24 (79.17%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=7w5ydyax3dnb3zr7rorrcrf2ur6dkfry2mq7hoknfhdzhbixcfea._file

Verdict:

malicious

Label(s):

darkcloudstealer

purecrypter

Similar samples:

error

a310Logger

Result

Malware family:

darkcloud

Score:

10/10

Tags:

family:darkcloud discovery stealer

Link:

https://tria.ge/reports/250728-v6qmcszpx9/

Behaviour

Suspicious behavior: GetForegroundWindowSpam

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

Verdict:

Malicious

Tags:

DarkCloud

YARA:

n/a

Link:

https://app.threat.zone/submission/137ac194-9b9e-4c08-a427-9246d07e5d3e

Unpacked files

SH256 hash:

fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148

MD5 hash:

092bf918dc5bee238d1769b39b138c1c

SHA1 hash:

fd8bc7076922823e3663492dcda60b7fd8754467

Link:

https://www.unpac.me/results/ed2fb5d5-28d3-43ba-97c5-d75c2d237e6f/

Malware family:

DarkCloud

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/fdbb81e017d8/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/fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148

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_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:	Lumma_Stealer_Detection Create hunting rule
Author:	ashizZz
Description:	Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:	https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/

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:	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_CMD_Powershell_Usage Create hunting rule
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 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

exe fdbb81e017d8da1de63f8ba31144baa47c351638d321f3b94d29c79385171148

(this sample)

Delivery method

Distributed via e-mail attachment

Cape

https://www.capesandbox.com/analysis/17417/

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (GUARD_CF)	high

Comments

Login required

You need to login to in order to write a comment. Login with your abuse.ch account.

No comments found for this malware sample