MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274. 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

ACRStealer

Vendor detections: 10

Intelligence 10 IOCs YARA 20 File information Comments

SHA256 hash:	c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274
SHA3-384 hash:	867379f8871d07dbf2a3830c832a5bf8b7203c2da43c912d9be2e30da7c08c281b1d6ece39eb97d120f4d69c20d24a8b
SHA1 hash:	f09848e0b687d8247a2813f49decf6733a84b7c7
MD5 hash:	d7764dfc94844fc7ea9e9ae771e36811
humanhash:	yellow-lima-jig-alpha
File name:	VKkQj.exe
Download:	download sample
Signature	ACRStealer Create hunting rule
File size:	2'454'656 bytes
First seen:	2026-05-26 00:42:11 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	5af915f278815e76bad476ef32593028 (15 x ACRStealer, 13 x LummaStealer, 4 x Fuery)
ssdeep	24576:rEmYMLTYSp31fPy8ieEr4C3p2nzUJl4j+Yi+KLHnT/ZXIVYTHFIaIkVje3XPQjKP:RvFS/mj+YaLT/Z4VYhPSvp4skxB9rA
TLSH	T1AFB58D11FCC355F6E80223325AAB62BF63399C051F329B9BEA5436BAF9735D51832341
TrID	50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 10.5% (.EXE) Win64 Executable (generic) (6522/11/2) 8.1% (.EXE) Win16 NE executable (generic) (5038/12/1) 7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
dhash icon	0048048488f67c01 (1 x ACRStealer)
Reporter	aachum
Tags:	5-252-155-72 ACRStealer exe flur-constzoo-surf signed

Code Signing Certificate

Organisation:	me.muz.li
Issuer:	R13
Algorithm:	sha256WithRSAEncryption
Valid from:	2026-05-07T19:29:00Z
Valid to:	2026-08-05T19:28:59Z
Serial number:	056db75ad9aa9bd0a6fe9c044afcc9b07cb5
Intelligence:	15 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:	SHA256
Thumbprint:	9357a0247493204d4d985589f2cd996b3638cfcc9a9ae00843a9b7a5135cb235
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

iamaachum

http://5.252.155.72/load/os1/VKkQj.exe

ACRStealer C2: flur.constzoo.surf

Intelligence

File Origin

# of uploads :

# of downloads :

145

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

vidar

ID:

File name:

_c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274.exe

Verdict:

Malicious activity

Analysis date:

2026-05-26 00:44:04 UTC

Tags:

stealer vidar golang

Link:

https://app.any.run/tasks/0921c843-68f2-475a-b58f-88a0616ad4e8

Note:

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

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/67919/

Detection(s):

SecuriteInfo.com.Win32.Evo-gen.23392935.UNOFFICIAL

Verdict:

Malicious

Score:

94.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6a14ec7d5d76862ef947d1fe

Tags:

phishing spoof

Result

Verdict:

Clean

Maliciousness:

Behaviour

Сreating synchronization primitives

DNS request

Connection attempt

Sending a custom TCP request

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Tags:

adaptive-context anti-vm crypto golang packed signed

Link:

https://www.filescan.io/uploads/6a154749099ef368afff93c8/reports/d32f0d5e-d201-4c3d-aec5-a56b64df761b/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_70%

Link:

https://www.hybrid-analysis.com/sample/c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274

Verdict:

Clean

File Type:

exe x32

First seen:

2026-05-26T15:29:00Z UTC

Last seen:

2026-05-27T10:59:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274/results?tab=lookup

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/fe6fb84b-5179-46ae-ac53-1893b280e7d1

Result

Threat name:

ACR Stealer, GO Stealer

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1918348

Signature

AI detected suspicious PE digital signature

Allocates memory in foreign processes

Found direct / indirect Syscall (likely to bypass EDR)

Found many strings related to Crypto-Wallets (likely being stolen)

Hides threads from debuggers

Maps a DLL or memory area into another process

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Switches to a custom stack to bypass stack traces

Tries to harvest and steal browser information (history, passwords, etc)

Tries to steal Crypto Currency Wallets

Unusual module load detection (module proxying)

Writes to foreign memory regions

Yara detected ACR Stealer

Yara detected GO Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PE (Portable Executable) PE File Layout Win 32 Exe x86

Link:

https://app.malva.re/file/d7764dfc94844fc7ea9e9ae771e36811

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274/

Verdict:

Malicious

Threat:

Family.VIDAR

Link:

https://tip.neiki.dev/file/c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274

Threat name:

Win32.Trojan.Qwexlafiba

Status:

Malicious

First seen:

2026-05-25 13:26:25 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

17 of 24 (70.83%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yv34nsd33cqugwmaadtd2u6i4cnu67l2rogf3y3por43l5cbcj2a._file

Result

Malware family:

n/a

Score:

10/10

Tags:

discovery spyware stealer

Link:

https://tria.ge/reports/260526-a2mdxsct8s/

Behaviour

Enumerates system info in registry

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Browser Information Discovery

Enumerates physical storage devices

System Location Discovery: System Language Discovery

System Time Discovery

Drops file in Windows directory

Suspicious use of NtSetInformationThreadHideFromDebugger

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Suspicious use of NtCreateUserProcessOtherParentProcess

Unpacked files

SH256 hash:

c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274

MD5 hash:

d7764dfc94844fc7ea9e9ae771e36811

SHA1 hash:

f09848e0b687d8247a2813f49decf6733a84b7c7

Link:

https://www.unpac.me/results/b3a0df55-6e32-4651-adfd-76875fc1c424/

Please note that we are no longer able to provide a coverage score for Virus Total.

Threat name:

Legit

Score:

0.08

Link:

https://yomi.yoroi.company/submissions/c577c6c87bd8a143598000e63d53c8e09b4f7d7a8b8c5de36f7479b5f4411274

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:	command_and_control Create hunting rule
Author:	CD_R0M_
Description:	This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group

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:	DebuggerException__SetConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DetectGoMethodSignatures Create hunting rule
Author:	Wyatt Tauber
Description:	Detects Go method signatures in unpacked Go binaries

Rule name:	Detect_Go_GOMAXPROCS Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata

Rule name:	GoBinTest Create hunting rule

Rule name:	golang Create hunting rule

Rule name:	Golangmalware Create hunting rule
Author:	Dhanunjaya
Description:	Malware in Golang

Rule name:	golang_binary_string Create hunting rule
Description:	Golang strings present

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	Golang_Find_CSC846 Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	Golang_Find_CSC846_Simple Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	HiveRansomware Create hunting rule
Author:	Dhanunjaya
Description:	Yara Rule To Detect Hive V4 Ransomware

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	pe_no_import_table Create hunting rule
Description:	Detect pe file that no import table

Rule name:	ProgramLanguage_Golang Create hunting rule
Author:	albertzsigovits
Description:	Application written in Golang programming language

Rule name:	SEH__vectored Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	Suspicious_Golang_Binary Create hunting rule
Author:	Tim Machac
Description:	Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)

Rule name:	ThreadControl__Context Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	TH_AntiVM_MassHunt_Win_Malware_2026_CYFARE Create hunting rule
Author:	CYFARE
Description:	Detects Windows malware employing anti-VM / anti-sandbox evasion techniques across VMware, VirtualBox, Hyper-V, QEMU, Xen, and generic sandbox environments
Reference:	https://cyfare.net/