MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37. 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 21 File information Comments

SHA256 hash:	377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37
SHA3-384 hash:	25326005109b74fb8201b2414e845e0dcf1ebc08b45af78331d090c222a686a76a39ee4bc100d45f3cfedd12ce313639
SHA1 hash:	c7fce36581fef2e10ed02afc2d7d8e998f5509fd
MD5 hash:	8e3bce0f81764c05f7290818ddd366e9
humanhash:	gee-london-march-idaho
File name:	377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37
Download:	download sample
Signature	a310Logger Create hunting rule
File size:	947'200 bytes
First seen:	2025-10-10 06:22:52 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep	24576:G4RQprxjfvMnlHWCnuBHbMcVBVjchuYBEaYmMU:jGrxLvMnlHWC0BV3QhGaYmh
Threatray	876 similar samples on MalwareBazaar
TLSH	T1171501242319CA05E1768FF54931E3B41BB8AFAAE810D61B8FC93DCF7836B905945763
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	adrian__luca
Tags:	a310logger exe

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37

Verdict:

Malicious activity

Analysis date:

2025-10-10 06:42:31 UTC

Tags:

auto-sch-xml darkcloud upx

Link:

https://app.any.run/tasks/2cb45111-2af8-4256-8cdd-0e4f892baf94

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/31985/

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=68e8a6668b7b147cc4b686fa

Tags:

virus micro msil

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Сreating synchronization primitives

Creating a file in the %AppData% directory

Enabling the 'hidden' option for recently created files

Adding an access-denied ACE

Creating a process with a hidden window

Creating a file in the %temp% directory

Launching a process

Sending a custom TCP request

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

Stealing user critical data

Adding an exclusion to Microsoft Defender

Enabling autorun by creating a file

Verdict:

Malicious

Threat level:

10/10

Confidence:

100%

Tags:

darkcloud formbook krypt packed unsafe

Link:

https://www.filescan.io/uploads/68e8a6514f3013c55e49356b/reports/1a37494a-c5e9-4fd9-a6c6-aa825d012668/overview

Verdict:

Malicious

Labled as:

Trojan.Generic

Link:

https://www.hybrid-analysis.com/sample/377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37

Verdict:

Malicious

File Type:

exe x32

First seen:

2025-09-11T06:28:00Z UTC

Last seen:

2025-10-10T05:27:00Z UTC

Hits:

~100

Link:

https://opentip.kaspersky.com/377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37/results?tab=lookup

Malware family:

DarkCloud

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/6f00f1e9-a8fa-4eb8-bc23-91f940e035f6

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37

Verdict:

inconclusive

YARA:

8 match(es)

Tags:

.Net Executable Managed .NET PDB Path PE (Portable Executable) PE File Layout SOS: 0.36 Win 32 Exe x86

Link:

https://app.malva.re/file/8e3bce0f81764c05f7290818ddd366e9

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37/

Threat name:

ByteCode-MSIL.Backdoor.FormBook

Status:

Malicious

First seen:

2025-09-11 13:29:29 UTC

File Type:

PE (.Net Exe)

Extracted files:

AV detection:

24 of 34 (70.59%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=g55fdloyqcwbo5uy4gb5yqme5h276qn5ccyngbtqaacmi7jvvy3q._file

Verdict:

malicious

Label(s):

darkcloudstealer

unc_loader_078

unc_loader_037

a310Logger

79ee7e3483bb6b0aa47f3fb7eb00f5f2d997122917ac02d8205ed4caa595ff09

a310Logger

ad43d09bcce26ca1b2c6e5a6ee96fcbb07f7105126a2d07af6289576a7f6feaa

a310Logger

error

a310Logger

f3026acc73c9537b343f2aec9eda1b51ce1eb304a15fcbdb95d88a291c2c248c

a310Logger

+ 866 additional samples on MalwareBazaar

Result

Malware family:

darkcloud

Score:

10/10

Tags:

family:darkcloud discovery execution persistence spyware stealer

Link:

https://tria.ge/reports/251010-g5prsa1lx3/

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

Executes dropped EXE

Reads WinSCP keys stored on the system

Reads user/profile data of web browsers

Command and Scripting Interpreter: PowerShell

DarkCloud

Darkcloud family

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/5d0189b9-98a3-4b4b-94be-ee3222f7185b

Unpacked files

SH256 hash:

4a8af9946518b7adfabab291dccfa4f3e27acac1ef07d4f8a69ebb488994bac1

MD5 hash:

56c90d081546763ea9a07679d338a4bc

SHA1 hash:

344a336b0717e7dd13e8afe573c54bde42947281

Link:

https://www.unpac.me/results/b7eee506-fbae-4184-b02c-e617ffbc1f2e/

SH256 hash:

7c7d6ddb19ba50cc62fba3750c659fcb788e94cada03b03ca27649bb0de65e5e

MD5 hash:

815e2c27d99fe36578b39c399db7e7d7

SHA1 hash:

a24b2d497d27cc7f7ee6e69421d21b2a30b0f908

Detections:

darkcloudstealer

INDICATOR_SUSPICIOUS_Binary_References_Browsers

INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store

INDICATOR_SUSPICIOUS_EXE_SQLQuery_ConfidentialDataStore

INDICATOR_SUSPICIOUS_EXE_TelegramChatBot

INDICATOR_SUSPICIOUS_EXE_CC_Regex

MALWARE_Win_A310Logger

MALWARE_Win_DarkCloud

Link:

https://www.unpac.me/results/b7eee506-fbae-4184-b02c-e617ffbc1f2e/

Parent samples :

ad35c23788b2e0f57f4a57326290de01f0680c567122ff11fa0eefe5443e522e
8e70ded796554c6b4cacde8469bfc6cfc13b4adecdaf0e0e22b8fcfab89c8f19
44d56ea314118afc4fa5fc409f4f1e4a8a232ff410de243c4fa14ada2365cae7
9aaec65c036d7b320fb31cbc73bff93e135eb2e8d3780c4a6dff2b4a5421ec9c
21cbafdad1d905516db91d5ea45b284e4167bdfb801701a95455ffa754b01dc9
789217599c1f3acfa58bde73eca30d4f0bd9c8184fdfe37ffa7339d321cfe266
741be14a5cfa6754257b0c372718ae5831353b6967164dcb7e95f163e5a3ece8
6a3b4e62a8262a0bf527ad8ea27eb19a0fcb48a76d6fc2868785362e40491432
7b7e52fb36207d89ab15876a165804032a70437b1eb56634ba58b548ce1eaada
377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37
a470b6f07644e28d40b1943e7bbbe82480904d0701165c21177a7e6a631f6db3
377dc2241fff636854214a7c79f53d439c9ae85374604003d51a46ebb461fa9e
d58c12abba6d1d929cc2b5cfdd3e5df87e467319e33cc4e68b33a4a9476d0292
f49d6efeab5a163ccaff6d8166c0be80e8430d50b4ba7c43df903dbb05bb7bfa
e85bc42c7456e0a394fd3ce094d79efbc3fa74d9bda545d204d6f45e371bd713
d7911c750b95eda25760d99dbc911f231f831492be7f55ee2620c25e85d01dee
2de4671af96bac2cbb7added8ee3a54239aac63a56d4bcc5ca22bfa88b30eb48
92196af46e360781ef13051a02c0bb5cffe02c8e36e791edcf3b85ef81f79ff5
a426bd95e9b0808e0eca07a8e3d3df5ea4adf0d8ad23b930a50d204462341f53
0070d70bb4e173624bbd845338dd8bcfff53b1566cbdf06e1973f7ccb69723ea

SH256 hash:

47c0a6b5def5b002c47ddc5345756c276b963cca1cb9d474928b430729cf1e5d

MD5 hash:

fd9c333cf2551e124643555c913a110f

SHA1 hash:

fba6e9eb2f77bba1dfde010dda3d90886378c4df

Detections:

SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24

SUSP_OBF_NET_Reactor_Indicators_Jan24

Link:

https://www.unpac.me/results/b7eee506-fbae-4184-b02c-e617ffbc1f2e/

SH256 hash:

3b75425895af4ae3186b36277553641e37ca1d620ae18d68e40d13351b54de6a

MD5 hash:

94d1531b52774dce52a89e33646d5b1d

SHA1 hash:

29bf887b025b97bd7a9e1e261852ba824234a625

Link:

https://www.unpac.me/results/b7eee506-fbae-4184-b02c-e617ffbc1f2e/

SH256 hash:

377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37

MD5 hash:

8e3bce0f81764c05f7290818ddd366e9

SHA1 hash:

c7fce36581fef2e10ed02afc2d7d8e998f5509fd

Link:

https://www.unpac.me/results/b7eee506-fbae-4184-b02c-e617ffbc1f2e/

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/377a51add880ac177698e183dc4184e9f5ff41bd10b0d306700004c47d35ae37

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:	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:	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.

Cape

https://www.capesandbox.com/analysis/31985/

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