MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55. 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

QuasarRAT

Vendor detections: 18

Intelligence 18 IOCs YARA 4 File information Comments

SHA256 hash:	def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55
SHA3-384 hash:	f8d63fe2d36c9580243f446d6217616da7c9dfd63a4371af56006675d8b1a0e698597240756c5c78c7d67c8b9b242c42
SHA1 hash:	e6e7ba436671f1271200622273aefc4f092a0eba
MD5 hash:	4e9962a374a1e169ce34b684c01ab24b
humanhash:	lactose-lake-cola-blossom
File name:	4e9962a374a1e169ce34b684c01ab24b.exe
Download:	download sample
Signature	QuasarRAT Create hunting rule
File size:	2'906'668 bytes
First seen:	2025-08-08 16:29:00 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	43382fa196ef1db7e28f1c806c1ebcbd (1 x QuasarRAT)
ssdeep	49152:ad4nG6iy78juiuuitzScOX8h5kNTgas8T5Cb:oM2yOunFlScHDkFgkcb
Threatray	92 similar samples on MalwareBazaar
TLSH	T196D5D029EB0615F4DA1797B2858EEBB7CB147A194032BE7FEF4BDB18A4338133845251
TrID	37.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 20.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 12.7% (.EXE) Win64 Executable (generic) (10522/11/4) 7.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 6.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika	pebin
Reporter	abuse_ch
Tags:	exe QuasarRAT

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

4e9962a374a1e169ce34b684c01ab24b.exe

Verdict:

Malicious activity

Analysis date:

2025-08-08 16:30:42 UTC

Tags:

auto-reg evasion crypto-regex

Link:

https://app.any.run/tasks/3757f1dd-2c1a-4377-af87-a073a4fa46ce

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/19713/

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=689625ef11d7f9b979e6aa73

Tags:

vmdetect autorun quasar

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a file in the %AppData% subdirectories

Creating a process from a recently created file

Creating a window

Сreating synchronization primitives

Launching a process

Setting a keyboard event handler

Connection attempt

Sending a custom TCP request

DNS request

Using the Windows Management Instrumentation requests

Creating a file

Unauthorized injection to a recently created process

Enabling autorun by creating a file

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

anti-debug crypt mingw obfuscated overlay packed packer_detected xpack

Link:

https://www.filescan.io/uploads/689625f0397fd3ce6fa274bd/reports/76de7af1-28f9-4919-9d83-7ccb5ff0f93b/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55

Malware family:

Malicious Packer

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/0f19a714-4b78-4517-b5bd-da07099ba449

Result

Threat name:

Quasar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1753153

Signature

Antivirus / Scanner detection for submitted sample

Antivirus detection for dropped file

Contains functionality to inject threads in other processes

Drops PE files with benign system names

Found malware configuration

Hides that the sample has been downloaded from the Internet (zone.identifier)

Installs a global keyboard hook

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

Sample uses string decryption to hide its real strings

Sigma detected: Files With System Process Name In Unsuspected Locations

Sigma detected: Schedule system process

Sigma detected: System File Execution Location Anomaly

Sigma detected: Windows Binaries Write Suspicious Extensions

System process connects to network (likely due to code injection or exploit)

Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)

Uses schtasks.exe or at.exe to add and modify task schedules

Yara detected Quasar RAT

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PE (Portable Executable) Win 32 Exe x86

Link:

https://app.malva.re/file/4e9962a374a1e169ce34b684c01ab24b

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55/

Verdict:

Malicious

Threat:

HEUR:Trojan.MSIL.Quasar

Link:

https://tip.neiki.dev/file/def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55

Threat name:

Win32.Hacktool.Aikaantivm

Status:

Malicious

First seen:

2025-08-05 11:54:50 UTC

File Type:

PE (Exe)

AV detection:

20 of 24 (83.33%)

Threat level:

1/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=3333xq5c5pe2lslnshb3sfv7smtaepgbh7ydgdpcdz2wsus7v5kq._file

Verdict:

malicious

Label(s):

quasarrat

QuasarRAT

280f78a77f4bc4fc98ea7d35168446c7e83fba78e467b0aff8edbba9ba8af210

QuasarRAT

2d6903a6ab9162953059630ba9ea059da90b199e9c9c11a3fa5d8ae9b777c508

QuasarRAT

3637ca34ceee7b2a404aad80b80ac2e5da7ec008f03d55fa2ad662f5c93378f3

QuasarRAT

659655e1978f173874b8e7ee162720482d3314cf04c4ec6a4a58022856dd6b7f

QuasarRAT

96e304563b32ec8a6de1d8b990164db92a1191ba13725384bc2e32b54b5633f1

QuasarRAT

def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55

QuasarRAT

error

QuasarRAT

+ 82 additional samples on MalwareBazaar

Result

Malware family:

quasar

Score:

10/10

Tags:

family:quasar botnet:tweaks discovery execution persistence spyware trojan

Link:

https://tria.ge/reports/250808-tzk8mazqv8/

Behaviour

Scheduled Task/Job: Scheduled Task

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

System Location Discovery: System Language Discovery

Executes dropped EXE

Quasar RAT

Quasar family

Quasar payload

Malware Config

C2 Extraction:

185.208.159.212:5050

Verdict:

Malicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/e500d409-c733-4e4e-ad53-9223e2c1b28e

Unpacked files

SH256 hash:

def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55

MD5 hash:

4e9962a374a1e169ce34b684c01ab24b

SHA1 hash:

e6e7ba436671f1271200622273aefc4f092a0eba

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

SH256 hash:

dc25c48ce50c97d7d20bb2ead3a958bb1e7696d0f3c619604c6a79157bae7d96

MD5 hash:

f19db743243014a3f4e6729cb9b9a815

SHA1 hash:

06146166e1a640e06d8f3d657e0a61a0d0947376

Detections:

QuasarRAT

cn_utf8_windows_terminal

malware_windows_xrat_quasarrat

MAL_QuasarRAT_May19_1

MAL_BackNet_Nov18_1

INDICATOR_EXE_Packed_Fody

INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL

INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

SH256 hash:

d5235265564f0bfd23b7279d7bdccc9ea6383ed07c5d0bfdf6c99029af9a2c0c

MD5 hash:

1d3dd9fcc077e6b4f88c05b9aef53ee6

SHA1 hash:

12b33858bc84f54b8aa8dbcb5a0ec2da043a6f66

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

SH256 hash:

c7cf497a4d57eba609d8fbb4fa1b9361a3af91e6f69e1acefcebd9b36591b07b

MD5 hash:

73aa1e60c85c277953e524717d76b905

SHA1 hash:

24e932cccb1868513d9d477297e5d1ba44edb02f

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

SH256 hash:

bcfd9e3a0ef2e77817bb7a664ae9080ca52724edaedeec7a689da9c65aa47167

MD5 hash:

2ad08adaf00f652b3834a4644fc436c8

SHA1 hash:

3df77b27ed458bbc22357427d8a7fdbaedad700b

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

SH256 hash:

4c9615496970ea84320e2a6e99f8fb828e3c7790384df5585d93fc368885d94e

MD5 hash:

50e6524b7ee9c2c93f5210b63cb1ca54

SHA1 hash:

3e296ec3bb24750833ea80515e6fb4c73874c91a

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

SH256 hash:

e54b3f90f18efaba3b4e714533d5e1f0aaf2f656b9166d6498e15b659cc41b8c

MD5 hash:

4a3c2b2b73407e79a9ebc6caece6c144

SHA1 hash:

70f64ab70fdc0c484da6f914d2742115c7a97141

Detections:

SUSP_NET_Large_Static_Array_In_Small_File_Jan24

HKTL_NET_GUID_Quasar

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

Parent samples :
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SH256 hash:

5012d7cab74e4d5bd9fdd298d05ae5d51442e66d426e5859beb9a513ad1acae4

MD5 hash:

79331ea5a83291a3f45014f126c5176f

SHA1 hash:

d60daf9acaacbeb3def349c76f236df1460a4797

Link:

https://www.unpac.me/results/7127b1be-771b-4f11-9398-63eb8a3a3a90/

Malware family:

QuasarRAT

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/def7bbc3a2eb/report/overview.html

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

Threat name:

iSpy Keylogger

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/def7bbc3a2ebc9a5c96d91c3b916bf9326023cc13ff0330de21e7569525faf55

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

Rule name:	HUNTING_SUSP_TLS_SECTION Create hunting rule
Author:	chaosphere
Description:	Detect PE files with .tls section that can be used for anti-debugging
Reference:	Practical Malware Analysis - Chapter 16

Rule name:	pe_detect_tls_callbacks Create hunting rule

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)

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/19713/

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_NX	Missing Non-Executable Memory Protection	critical
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
WIN32_PROCESS_API	Can Create Process and Threads	KERNEL32.dll::CreateRemoteThread KERNEL32.dll::CreateProcessA KERNEL32.dll::VirtualAllocEx KERNEL32.dll::WriteProcessMemory KERNEL32.dll::CloseHandle
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::FreeConsole KERNEL32.dll::GetConsoleWindow
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CreateDirectoryA KERNEL32.dll::FindFirstFileA
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.DLL::RegOpenKeyExA ADVAPI32.DLL::RegSetValueExA

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